INFORMATION PROCESSING DFVTCF, AND INFORMATION PROCESSING METHOD TKCliNlCAT. FTFI.D [0001] The present technology relates to information processing devices. More parti on1arty, the present technology relates to an itiJontiati on processing device and an informrfl.i on processing method for e^chanqi nq various kinds of informaLi on through wireless coimtiunicaLion* BACKGROUND ART L000^1 There have boon wireless eornmuni cation techniques for exchanqinq various kinds of data Lhromjh wireless comiriunicaLion, For example, an information exchanqe device that exchanges vari ous kinds of data through wire I ess communication between two wi re I ess oornmunication devices has been suggested [sec Patent Document 1, for example). C1TATT0N LIST PATENT DOCUMENT [00031 Patent Document: 1: JP 200G-27Q383 A SUMMARY OF TIIK INVENTION PROBLIM5 TO BR S0T,VF,D BY THE iUVliNTlON [0004] By the above described conventional Ledum I ugy, it is possible to exchange various kinds of data through wireless comtuiinf cat-i on between two wireless communication devices that arc not connected to each other by a wired line. For example, an image baaed on i»iage data transit i Lted from the information processing device on the transmitting aide can he displayed on the display unit of the information processing devi ce on the receiving side. lOOObj it can be also assumed that there exists more than one information processing device on Lhe transmitting aide, and images based on image data transmitted from those information processing devices are displayed on the display unit of the information processing device on the receiving side, for example. In such a case, it is critical to perform appropriate power consumption mode control in accordance with Lhe communication status . [0006[ The present technology has been made in view of those circumstances, and aims to perform appropriate power consumption mode control. SOT.UTTOraS TO PROBLEMS [0007 I The present technology has been developed to solve the above described problem, and a first aspect thereof lies in an information prucessirtcj device that receives a stream for output ting imaqe i n roritt# t i oti from another i it t o rma I: i on processing devioe through wi re Less communication, and including: a w i re I ess ooiiimvini oaM on unit that performs communicat.i on with the other information processing device so as to exchange capability information about the information processing device and capability information about tho other information processinq device; and a control unit that performs control Lo aeL a power consumption mode i n the other in formation peocessing do vice based on the capability information about the other information processing device. The first aspent dlso Ilea in an information processing method in the information processing device, and a program for causing a computer to implement the i nJonuat. i on processing method. With this, a power consumption mode is seL in the other information process i rig device based on the capability information about the other information processing device. [0008] In the first aspect, the capability information about the other information processing device may include i iif orrnaf i on E rid i na L i ng whether the other information processing device is a mobile device, and the control unit may perform, control to set a low power consumption mode i.n the other information processing device based on t. he capability information about the ether i n f ontiation processing devi ce and iiianaqemenL Lnf ot ma Lion for managing the other informst i on processi ricf dev Leo. With this, the low power consumption mode f s set in the other information processing device based on the cripabi I ity Information about the other information processing device and the management information for managing the other information processing device. [00091 In the first aspect, the management i n I ontiat Lon may be information for managing identification i nformstion for identifying the other information processing device and l.he capability information about the other information processing devioe, the identification i nforniat i on and Lhe capability information being connected to each other. With this, the management information for managing the identification information for identifying the other information processing device and the capability information about, the other information processing device is generated, wi th the identification information and the oapahili ty i nformation hei nq oonnented to each other. L001CJJ In the first aspect, the management information may i iif:l ride, as the oapahi 1 .i ty informa ti on about the cither information processing device, at least information about, radio wave propagation measurement related to commun i cati on with the other information processing device and information about power consumption. With this, the management information that includes at least the information about radio wave propagation measurement related to communication with the other information processing device and the i nformation about power consumption as the capability E reformation about the other information processing devioe i s generated. fooiii In the Mrat aspect, the management information may include, as the OHpahi1i ty i nformstion about the other information processing device, at least irirortnaLion about an output format for displaying the imago information. With this, the management information that includes at least the tn formation about the output format for displaying the image information as the capability information about the other infor ina t ion processing devioe is used. [0012] In the first aspect, the information about the output format, may bo information t.nd i erf L" f nq that the image i tiformation is of main display or of Hub display, and, when tht? output, format is of the sub display, the control unit may set the low power consumpt J OJI mode in the other information processing device. With this, when the nntput format is of the sub di splay, the low power consumption mode is set in the other information processing device. [0013] In the first aspect, when switchinq between the main displ rfy and the sub display is pcrf ormed, the other information processing device may transmit information indicating the timing of the switching to the information processing device. Ki th thi s, when switching between the main display atid Lhe sub di splay is performed, the other i n formation processing device trail ami t» [he i nformation indicating the timing of the switching to the informal. ion process t tuf devi oe. [0014] In the first aspect, the control unit may perform control to set a mode for the other Information processing device to transmit the stream while sleeping at predetermined intervals, the mode beiruj s-et as the low power consumption mode. With this, the mode Tor the other information processing device to transmit the stream while sleeping at prcdcter.w i net] intervals is sot as the low power consurnpL i on mode . [00151 In the first aspect, the setting of a power consumption mode may bo performed with a predetermined RTiSP message def i ned in the Wi-Fi Pi spI ay specifications. With this, the setting of a power consimipt i on mods E s performed wi th the predetermined RTIiP message defined in the Wi-Fi Of sfil ay speci tioations. LOOlfcl In Lhe Mr^r. aspect, the wireless communication unit may perforin exchange of the capabi ] i f-.y information through capability negotiation or capability r.e-nerfol. i at i on def i ned i n the Wi-Fi Display specifications. with this, exchange of the capability information is performed through capability nog at i a Li on or capability re-negotiation defined in the Wi-Jj'i Display spec i ri cati mis . [00171 In Lhe first aspect, the capabi 1 i ty i nf ormation may be exchanged in a RTJJP M3 Message in capab i J i ty negotiation or capability re-negotiation. With this, the capabi Iity infon-nati on is exchanged in the RTSP M3 Message in capability ncgotiati oir or capability re-negotiation. [0016] in the first aspect, tiie wi ret ^ss communication unit may be a wireless communicaLJ on uh i I. that performs communication using a I i rst frequency band and communication using a second frequency band havinq a hiqher data transmission rate than the first frequency band, and (.he control unit may set a first power consumption irsode for the first frequency band and a second powsr consumption mode Tor the second frequency band independently of each other. With this, the T i rst power consumption mode for the first frequency band and the second puwer consumption mode for the second frequency band are set: independently of each other. [0019] Til the first aspect, wtien the trianagement information is changed, the control unit may perforin control Lo transin.i t a command to the another information processing device, the command being for notifying the another information processing device of the change. Kith this, when the management informal i on is charged, the; command for not i f yi ng the other information processiny devi ce of the change ift L ransmi tted to the other information processing device, LU020J In the first aspect, the control unit may perform control to transmit, a RTSPM5 Message as the command to the other information processing device, the RTSPM5 Message containing wfd-triggercd-method defined tu Lhe Wi-Ft CERTIFIED Miracast specifications, KtLh this, the RTSPM5 Message containing wfd-t riggored-mct hod defined in theWi-Fi CERTIFIED Mir acast specifications is Luansmi tted Lo the other i reformation processing device. A second aspect of the present technology lies in an information process i ng devi ce that (receives a stream for output ting image in To rata t i on f rom another information processing dev t ce through wi reI ess communication, and performs control to sot a power consumption mode in the other information processing device based on the output format of an ouLput unit that outputs the image information bayed Lin the stream. The second aspect also lies in an informa t Lon processing meLhod in the information processing device, and a program for csiiHi ng a computer to implement the inforrctat.i on processing method. With this, a power consumption mode is wet in the other information processing device based on the output format of the out.put unit that outputs the image inf nrmation based on the sL ream. [002?] A third ay pec L of the present technology lic3 in an information processing dovice that transmits a stream for outputting image information front another information processing device through wireless communication, and i ncluding: a wireless communication unit that performs comriiuni cati on with the other information process i n<[ device so as to exchange capability information about Lhc information processing device and capability information about the other information processing device; and a control unit thai, sets a power consumption mode under (..he control of the other inFormation processing device based on Lhe capability i n forma L ion about the i nformat i on process I.EKJ device. 'the third aspect also lies in an information processing method in the information processing device, and a program for causing a computer to implement the information processing method. With this, a power consumption mode is set under the control of the other information processing device based on the oapabi1i ty informat!on about the information process i ni[ dev t ce. UlEECTS OF THE INVENTION [G023] According to the present technology, an excellent el" feet to realize appropriate power consumption mode control can be achieved. BRiiiU- DESCRIPTION OF DRAWINGS [0024j b'ig. J is a b I ock d i aqram showing an example system contiguration of a conununi cat i on system 100 ins f i rst 0 SP353083WO00 embodiment of the present, technology. FE i[. '?. i a <3 bf oek di aqrdin showi nq an exampl t? furicL i.ona I structure of art i nTorniaL i on proceaa 1 tiq dev i t:e ^00 in the lira t embodiment of the present technology. 5 Fig. 3 is a block, diagram showing an example functional structure of an information processing device 300 in this embodiment of the present technology. Fi.q , 4 ia ^ di aqrara s.<;hem*3l". i nsl t y ahowi nq an exa rtip I e of the contents of" the i nformat: i on hel dins rn^naqeNienL 10 information holding unit 390 in Lhe f i rsL enibod i client of Lhe present technology. L'ig. 5 is a diagram showing an example of transition of images displayed on a display unit 351 of the information processing device 300 in the first embodiment of the present 1 5 Let-ruin I oqy. Fig. 6 is a aequence char I of an example of a communication process to be performed between devices in the communication system ]00 in the first embodiment of the present technology. 7.0 Fig. 7 is a sequence chart of an example of a communication process to bo performed between devices in the ooinmunioation system 100 in the first embodiment of the present technology. Sf'ig. 8 is a sequence chart of an example of a 25 communication process Lo be performed between devices in Lhe communication ays tern 1 00 in the fi.rsL embodiment cjT Lhe present technology. Fig. 9 is a sequence chart of an example of a coriiinvmi cation process to be performed between devices in the 30 comiituni t:ati on system 100 in the first embodiment of the present Le;:hnol ogy. 10 Fig. 10 is a sequence chart of Lin example oi a common i cation process to be performed between device;; in the communication system 100 in tho first embodiment of Lhe present Lechno f oqy * 5 Fig. 11 la a sequence chart of an example of a communication process Lo be peri ormed between devi oes in the communication system 100 in Lhe firsL embodi.trletiL of Lhe present technology. Fiq, 12 is a flowchart showing an example of the 10 processing procedures in a data transmission process to bo performed by the infer ma Li on processing device 200 in the first embodiment of Lhe present technology. Fig. 13 is a rIowohart showing an example of the processing procedures in a data Lransmi ssi on rate control 1 5 process to be performed by the information process i nq devf ce 300 in Lhe i' i rst embodiment of the present technology. Ij'ig. 14 i s a sequence chart of an example of a communication process Lo he performed between a source device and s sink device in the firsL embodiment of the present 20 technology. Fig. 15 is a sequence chart ot an example of a eotnranni cation process to be performed between a source device and a sfnk device in the first embodimenL of Lhe present tcchnoi.oqy. 2fj ti'ig. 16 i s a sequence chart of an example of a communication proctiss Lo be performed between a source device and a sink, dcv.i ce i u Lhe f.i rst embodiment of the present technology. Fig. 17 is a block diagram showing an example system 30 eonfiguration of a eommuni cat i on system 700 in a socond embodiment of tho presort!- technology. 11 Fig. 18 is EL sequent:*? <;hart of an example of coEnmLinica ti on processes to be perfyrmftd among the devices in the communication system 700 in Lhe second embodiment of the present techno Ioqy. b fig. 19 i s a fl nwchart showing an exatripl e^ of the processing procedures in a frequency channel set-ting process Lo be performed by an information processing device 300 in the .■second embodiment of Use present technology. Fig. 20 is a block diagram schematically showing an 10 example structure of a smartphone, 1'ig * ?A is a block, diagram schema L i ca El y showing an example structure of" a car navigation device. M0DF1S FOR CARRYING OUT THF, INVENTION 15 [f)02b] The following is a description of modes (hereinafter referred to as embodiments) tor carrying out the present: technology. ExplamtL i on will be made in the follow J ng order , 1. First embodiment (an example where control on " 20 wireless communication is performed based on user information and management information) 2. Second embodiment {an example where an appropriate frequency channel 5s set for a source device that, i^n use more than one frequency channel) 25 3. Applications [002&J <1. First Embodiments [Example Configuration of a Communication System] fig .1 i s a block diagram shtiwi ng an example system 30 configuration of" a communication system 100 in a first embodiment ol Llie present techno J ogy. 12 SP353083WO00 [0027] The communication system 100 includes an information processing device 200, an information process i nq devi oe 300, and fan information processing device 400, Also, Lhe communication system 100 is a communi caL J on system in which l.he i nformation processing device 300 receives data (such as imaqe data or audio, data) transmitted from aL .I.easL one ot" the informal..ion processing devices 200 and 400, [0028] The information processing dev i ces ?00, 300, and 100 are Lransmitting and receiving devices having a wifeless communicaL.i.on I iinr:t:i on . For example, the information processing dev1ces >00, 300, and 400 are display devices having a wireless commun i caLi or* function (personal computers, for example) , cr porLab I e in! orma ti.on processing devices (snoh as smartphones or LabieL Lermi rial s) « Also, the inforrital.1 on processing devices 200, 300, and 400 are wi re less conrniunj cat" i on devices compliant with ins Li in Le of Fl ecf.ri oa 1 and Klcctronies Engineers (IEEE) 802.11, 802.15, or 31)2.16, or the 3GPP specifications (such as Sideband Code Division Multiple Access [W-CTWO , Global System for Mobile Coiiiruini cations (tl^M (retf-i sLered trademark) } , Long Term tlvoiuLion (LTE) , or LT1^-A (Advanced}), for example. The informal ion processing devices 200, 300, arid 400 can exchange various kinds of information, usinq Lhe wi re1 ess communication fund: i on. An example ca.se where wireless communication using a wireJess T.ooal Area. NcLwo:.k (TAN) is conducted between the informa l".i on processing dev Lee ^00 and the information processing device 300, or between Lfie i n formation processing 13 SP353083WO00 device 400 and Lhe information processing device 300 is now described. [0030] This wireless LAN may be Wireless Fidelity (Wi-Fi) 5 Direct, Tunneled Direct Link Setup (TI3L3), or ad-hoc network, Tor example. The near-field wire 1 ess Audio Visual [AVJ transraissi E">n communication to be used in the communication system 100 may be Wi-Fi CERTIFIED Miracast, £us: e.xaiftple, Wi -Fi CKRTiFIED Miracast i s a mirroring technique for." 10 L rai emitting the sound and Lhe di splay image to be reproduced (iL one of the terminals Lo Lhe other one of the terminals, aad causing the other terminal Lo output the sound and. the imaqe data too, using a technique such as Wi -Fi Direct or TOLa . [0031J 15 by Wi-Fi CFRTTFTED Miracast, User Input Back Channel (UTBC) is realized with Transmission Control Protocol/Internet Protocol (TCP/IP)* UTRC is a technique for traittiini Ll.inq operating information about an input device such as a mouse or a keyboard from one terminal to Lhe other 20 terminal. Instead of Wi.-Fi CERTIFIED Miracast, some other remote desktop software (such as Virtual Network Computinq (VKTC> ) may be used. [00321 Wi-Fi CERTIFIED MiracasL specifies that images (video 25 images) if re compressed and decompressed with the use of IK 2 64, for example. By Wi-Fi CERTIFIED Miracast, H.264 can be adjusted im the transmitting side, for example. It is possible Lo cope not only with li.264 but d^nn with various kinds of codecs such as H.2G5 (high efficiency video coding 30 (HEVC) , sea lab I e video coding extensi oris of hi gh efficiency v.i deo coding (^iiVC} , for example) , Moving Picture Fxperts 14 SP3530&3WOOO Group (Mi?KG) 4, Joint Photographic ExperLs Group (JPF,G) 2000, or a I ine base eodec. [0033] The first; embodiment of the present technology shows 5 an example where Lhe informal i on prncessi nq devioe 200 is to transmit image data and audio daLa Llsal have been qener^Led Lhrouqh an imaging operation. The first embodiment, of Lhe present technology also shows an example where the informaLlon processing devi oe 400 is to transmit the content iO [such as conLenL for wed wi Lh i maqe data and audio data) stored in a storage unit (such as a hard disk). The i nformatr on processing device 200 may be art e I ecLrotii o device equipped with a camera (such as a personal computer, a qami nq maebine, a smartphone, or a tablet terminalI. The informalion lb proeessing device 300 may be an elecLronic device equipped wiLh a display unit (such as an imaging device, a gaming machine, a smarLphone, or a tablet terminal). [00341 fc'or example, image daLa qeneral.ed through an imaging 20 operd L:i on performed by the information process! E\g device 200 is transmitted to the .information proeessing device 300, and an image 11 based on Lhe image data is displayed on the display unit 351 of tho informal ion process f nc] devi ce 300 . Also, the content stored in the storage uniL (tsuch as a hard disk) of 2o Lhe information processing device 400 is Lrdnsmitted to the informal", i on processing device 300, and an itaacse 12 based on the content is displayed on the dispj ay unit. 3bl of" the information processing device 300 . [0035] 30 As described above, Lhe first embodiment of the present technology shows an exampt e where the information processing 15 J^353083ltfOOO devices on the sou t-c.:e si de (the source devices) are the i n formation process J ng devf ces 200 and 400, and the i nformation processing dev i ce on the sink side (the sink device) is the information processing device 300. 5 [0036] In Fi q • 1, the range in which tho information processing device 300 can perform direct, communication using wireless communication (or the iniormtfLi on transmi ssion range (service range) in a case where the information processing 10 dev i ce !500 is the reference device) is shown as an i n fornix I i on transmission range 101, [0037] [Example Structure of an Information Processing Device [a Source Device)[ 1 b Fig. 2 is a block diagram showi nq an example functional structure of the information processing device 200 in the first embodiment of the present technology. The functional structure related to wireless coinmunica L i ori of" the information processing device 400 is substantialLy the same 20 as the structure of the information processing device 200, The re To re, i n the first embodiment of the present Lechno L ogy, only the i n f ormati on processing device 200 is explained, but the informali on processing device 400 is not explained, [0038] 2Ei The i nformation processing device 200 includes an antenna 2] 0, a wireless communication unit 220, a control signal receiving un i t 230, a control unit 240, an imago/sound signal generating unit 2b0, an image/sound compressing unit 2bQ, And a stream transmi LI. i nq unit 270. 30 L00:t9I Under the control of the contrut uni t 240, the wireless 16 SP353083WQU0 communi oati on nni t 220 transfers various kinds of information (such as image data and audio daLa) to and from another information procossi.no, devi ce {the i nl onuaLi on process i tig device 300, for example) via the antenna 21.0, using wireless 5 communication. When an image data transmission process is performed, for example, image daLa genera Led by Lhe image/sound signal generating unit 250 is compressed by the image/sound compressing unit 260, and the compressed image data { nnatfe stream) is transmitted from the antenna 210 via 10 the wireless communication uniL 220 > f00401 Al so, the wireless communication unit 220 can transfer var. i ons ki nda of i nf orrnation to and from another information processing dev i ce (Lhe i nf orniati on processing device 300, tor 15 example) , using wore than one frequency channel , The first embodiment of the present technology shows ad example wtiert^ the wireless communication unit 220 has a function Lhat can perform transmission and reception through three kinda of rreqnenoy channels of 2.4 GHz, 5 Llhz, and 60 Clllz. in a case 20 where the source devices have a function that can perform transmission and reception through more than one frequency channel as described above, the sink device (the information processing device 300, for example) can perform control on wh.i ch frequency channels are to be used by the respective 2 5 source dev i ces. [0041] The control s i gna I reoei vi ng uni t 230 obtains a control i ti formation [information about exchange w i Lh Lhe i n forma Li on processing device 300, for cxamp.l e) L ran SKI i Lted Irom another 30 information processing device (Lhe i nforrca ti on processing dev i ce 300, for example) among respiecLi ve pi eces of 17 SP3530fi3WO00 information received by the wir.elesa coriirniiu i eat i on uni L 220, iiticj mitpnts the obtained control signal to the control unit 240. [0042] 5 The control uni t 240 performs control on the respective pieces ol information to be transmitted from the information processing device 200, For exampl e, the; control uni t 24 0 controls the image/sound signal generating unit 2b0 and the i rtraqe/sound compressing unit 260 based on the control signal 10 received by l.he control signal receiving unit 230. For example, the control unit 240 performs control for changing the resolution of Lhe t maqe da ta to be transmitted or changing the number of audio channels, and performs control for changing the image region of the image data to be tranyrni Lted - T b That i s, t.he control unit 240 perforins data lr.ansfni ss i Off rate control on the stream to be transmitted based on the control signal received by the control si gnal receiving unit 230. [0043] The control unit 240 may also have the f Ufict". i on to 20 measure the radio wave propagation state ( M.nk t ad io wavt? propagation state) at the time of data I ranymi s«i on/reoepti on wi th the sink device through wireless comiKun i cat i on, and transmit the result of the measurement {radio wave propagation measurement information) to the sink device. 25 [0041] Here, the radio wave propaija Li on measurement i nformation is the informal ion to be u^ed when a check is made to determi ne whether the quality of the I. j ne to L he sink devi ce is high enough to perform transmission/recepL i on of inia(je 30 data and audio data, for example. The radi.o wave prapa^ati on measurement information is also used when data transtn i ssi on 18 SP3b30tf3W0QU rate eonUol is performed on the stream, for example. The radio wave propacjrftEon measurement information will be described laLer in de.Uil, with reference to Fig. 4. [004T>] b Here, the data transmission J.ate primarily means the comiuuni i;a0, a oontrol unit 370, a control signal transmitting uniL 3B0, and a management inf ojniat i ori holding unit 390. ?5 [0057] Under Lhe control of the control unit 370, Lhe wireless communication unit J20 transfers various kinds of irtformat i on [suoh as image data and audi o data) to and from, another i ci formation process i nq device (the information process i nq 30 device 200, Tor example! via the antenna 310, using wireless communication. Tn a ease where an image datti recepti on 23 JJP353083WOOD proness is performed, for example, imago data received by tiic anlemia 310 is decompressed {decoded) by the image/sound decompressinq unit 340 via the wireless communication unit 320 and the sLreitri; renei vt nq uni t 330 . The decompressed image 5 data is then supplied Lo Lhe i waqe/ymmd output uni h 350, and the imago corresponding Lo lhe decofnpreused imaqe data i s output from the image/sound output unit 350. That is, Lhe imaqe corresponding to the decompressed imago data is displ ayed on the display unit 351. 10 [0058] Also, the wireless communication unit 320 can LranslTer various kinds of information to and from anolher informal, i.on pronessi ng device (the information processing device 200, for example), lifting more than one frequency channel. The first 15 embodiment, of (-he present technology shows an example whore the wireless commvini oahi on unit 320 has a function that can perform transmissi on and renephi on through three kinds of frequency channels of 2.4 GHs, 5 GHz, and 60 GHz. That is, the wireless communication un i L 370 cati perform oommuninat.ion 20 us i nq a M rst freguency band, and communicaLion LIB i nq a second frequency band of a higher data LraTiymi as i on rate than the firsL I requency band. The control unit 370 a.l nu peri ornts control on which frequency channel among the frequency channels is Lo be used in wireless communication with each 2 5 source device. [00591 The link between the informal i oh pro;:esfii nq device 200 and Lhe i nformation processing device 300, and the 1f nk between the information processing dev i i:e 400 and the 30 information processing device 300 may be the Hame frequency channel, or way be different frequency channels. SP35308 3WO00 L0060) The fir.st embodiment of the present technology shows an example where I he wireless communication unit 320 has a function that can perform transit* E ss E ori. and recept i on throuqh 5 the throe kinds of frequency channels ol" 2*4 GHz, 5 GHz, and 60 GElz, but the present techno I oijy is noL I f mi [:ed to l.hi s example. Ii'or GKaitiplo, the wireless coninturi Lea Li on uni L 3^0 may have some other frequency channel, or may have a function thai, cfln perform transmission and. roccption through two 10 frequency channels or through four or more frequency channels. [0061] Under the control of the control unit 370, the sLream receiving unit 330 receives information about the exchanqe To with Hdch source device and a stream [an image stream and a sound stream, for example) among the respective pieces of informal ion recei ued by the wireless communication unit 320 , The stream receivinq unit 330 then outputs the received command information to the control unit 370, and outputs the 20 recei ued stream, to the image/sound decotnpress i nq un i |: 340 end the control unit 370. I 00621 The information about the exchanqe wE lh each son me devi ce is information transmitted from the source devi ce (the 25 informati on processing device 200, forexampiej, and includes a request for acquisition of the system performance information about the information processing device 300, Inr example. The system performance information is information indicatinq the available frequency channels, resolution, TCP, 30 UD1?, compat i bi 1 i r.y with encoding techniques, compat Ebi 1 l l.y with EiD/IlD, and compatibility with low power consumption mode, 2b SF353083WOOD for example. The stream receiv i JUJ uni t 330 may also havo the fund i on to mcdsui"i? the radio wave propagaLion state [link radio wave 5 propagat i on state) at the time of da La (.rflnsmission/reception with the s.i nk device through, wireless communication. The stream receiving tin i L 330 then transmits the reaiiH'. of the measurement (radio wave propagation measurement inforniriti on) to the control unit 370. The radio wave 10 propagaL i on measurement informal ion wi 1 1 be described later in detail, wi Lh reference to 1^'ig. 4 . [0064] Under, the control of the control unit 370, the i ma ge,/ sound dccotrlpressi ng unit 340 decompresses [decodes) lb the stream [image da La and audio data) fransmi LLed from anoLtier i n format ion process I no; device [the informal.! on processing device 200, for cxampf el . The image/sound decompressing uni t 34 0 then outputs Lhe decompressed data (.irtidqe data and audio data) to the imago/sound output unit. 20 350. The image/sound decompressing unit 340 may be real ized by software performinq decoding, or may be reali zed by hardware performing decodi ng. [0065] The image/sound output unft 350 includes the display 7.b unit 351 and a sound output uni L 352. [0066] The display unit 351 is a display unit that displays respective images [the images 11 and 1 ?. shown fn Fig. 1, for exampi e} based on I. he image data decompressed by the 30 image/sound decompr essing unit 340 . The di spl ay unit 351 may bo a displ ay panel such as an organic KL panel or an LCD panel . 2b SP3b308MXlO The d i spl ay unit 351 may also bo a touch panel through wh i ch a user can perform an operation input by touching the display surface with a f i nqer or bringing a finger close to the display surface. b E00671 The sound output unit 352 is a sound output unit (a speaker, for example) that outputs various kinds of sound based on the audio data decompressed by the image/sound decompressing unit 34U (the sound relates to the image 10 displayed on the display uni I. 3bl, for example} . Here, the sound output method may be a method by which only the sound of the source device assigned to the met .In image is reproduced through the speaker, but the sound oi the source devi ce assigned to the sub image is not reproduced, lor example. 15 Another example of the sound output ttiethod may bo a method of by which the volume ol the sound of the source device assigned to the main image is ma inly i n^reased, but the volume of the sound of the source device assiqned to the sub image i s 1 ouered at the time of rcproducL ion, Tt i s si so possible 20 to use a sound output method other than the above methods. E0068] The user information aequi ri ng unit 360 acquires .Information about the user {the information is called user information], and outputs the ac<(U i'"ed user information to 25 the control unit 370. tor example, the user i reformation acquir.i nq unit 360 can acquire the user informal i on by accept i nq an input from an operation accepting un i.L (such as a keyboard, a mouse, a remote controller, a game pad, or a touch panel} through which the user can di rect I y set a di spl ay 30 method. The operation accepting unit is an operating unit for designating a desired ret] i on in the image displayed on 7.1 .3P3b30tf3WO0O the display unit 351, for example, jj'or example, the user i n formation acquiring unit 360 can acquire the user information by accepting an input from a device that can recognize the i h ten.^i on of the user, such as a camera, a 5 microphone, or a sensor of a kind (such as a gyro senior or a sensor that iiunaea a human body} . [0069] For example, the user information acquiring unit 360 acsfi i nq devi nes, and the i nforma ti on (the standby/wakeup 3*371 abouL power eunsumpLion. Also, the 10 management information held in Lhe management information holding unit 390 includes, as the capability information about the other information processing devices, at least the information (the output formats 396) about th.c output formats for df spl aying image information. The information about the 15 ouLpuL I onciats i s the information i ndicating whether image information is of main display or of sub diapl ay, for exalilpl e. [00R6] fftxamp]e of Transition of images] Fig. 5 is a diagram showing an example of transition 2 0 of images d i Mpl ayed on the di splay unit 351 of the information processing device 300 in the first embodiment of the present techno Ioqy. [0O87E in Fig > b, a ahyWH an exampi e ot the display formats 2 5 of the image 11 and Lhe image "12 d i apl ayed oti the di .spl ay uni t 3 51 of the information process J nq dev i.ee 300 in sut:h a marine r that the image 11 is displayed as Lhe fia i n linage while the image 12 is displayed as Lhe sub image, IU08R] 30 In Fig. 5, b shows an example of Lhe display formats of Lhe image 11 and the image 12 displayed on Lhe d i sp I ay un i L SP3o3083WO00 351 of the information processing device 300 in such a manner that the imago 11 is displayed as the sub image while the image 12 is displayed as the main image. rnoas] b For examp] e, .it is assumed that the in format i on process i ILC] device 200 and the information processing device 400 each transmit a stream (image data arid audio data) with a standard resolution to the information processing device 300. In this case, the imago 11 based on the image data 0 trarisfni tted from the information processing devioe 200 and the i riiaqe T 2 based on the image data transmi tted from the inforittat i on processing device 400 can be displayed on the display unit 3oT of Lhe informal- i oti processing device 300 i n such a manner that the image 11 and the image 12 have the same ."j size, as shown in Fig. 1. Although the resolution and the display region are fixed in this example, a scaler function may be added to the display anit 3EJ1 so that the image 11 and the image 12 are rescaled and are then displayed on the display unit 351 * However, the embodiment of the present technology 0 is based on the assumption that this function is not used, {.or ease of explanation. [0090| As for Lhe respective display formats or the image 11 and the image 12, the display formats that have been set during 5 the previous commun i.ea L" i ori may he kept, and the image 11 and the image 12 in those display forrti^ts may be displayed on the display unit 351 of the InformaLion processing device 300. 10091] Alternatively, the display formats of the image 11 and 0 Lne image 12 may be determined based on Hie order oi conneotions to the information processi rtq devi oe 300 , For 35 yP3530S3WO00 exampf e, i t i s assumed that the information processing device 200 is f IrsL connected to the information processing device 300, and, aJ~Ler Lh i s conneotfon, the information prooessing device 400 is connecLed Lo Lhe t n ronnati on prtit.:p.HHi nq devf oe 5 300 . In this case, Lhe imago 1 1 and Li if; image 12 aredt sp fayed on the display unit 351 of the information [irocessing dev f ee 300 in such a manner that the imago 11 is displayed as the main tmaqe while the image 12 is displayed as the sub image. That is, the main image and the sub image may be displayed 10 in this order based on Lhe order of connect".? oris to the information processing device 300. [0092] It is assumed that user informaLion ind.i.eaLi rig Lhad Lhe image 12 i.s the main image is acquired by the user information l.!5 aequi ring unit 360 in a case where the image 11 and the imago 12 are d i sp I ayed on the display unit 351 in such a manner that the image 11 is displayed as t"he main image while the image 12 is displayed as the suh i rrlage, as shown in a in Fig. 5. Fur example, a viewer performs an operation for setting Lhe 20 Linage 12 as the main image by using a remote control lor or. a pointer such D.S a gesture, and Lhf user information i nd i eating that the imago 12 is the main image is Lhen acqu i red by the user information acquiring unit 360. in this case, the image 11 and the image 12 are displayed on the display ?5 unit 351 in such a manner that the image 12 is displayed as the main imago while the image 11 i s di spl ayed as the sub image, as shown in b in L-'ig * 5. The display positions of the image 11 and the image 1 2 on the di sp I ay surface of the display unit 351 are also determined based on the* user information (a 30 manual operation or a line of sight, for example) acquired by the user information acquiring un i L 360. 36 SP353083VJO00 [0093] [Kxample of Communication] Figs. 6 through fl show a sequence chart at an example of a ooiiirnvmi nati on prori^jsa to be performed between devices o i EI the communication system 100 in the r i rsL embodiment of the present techno ioqy. Fiqs, 6 throuqh tt show an example of a communication process to bo performed between the information processing device 200 and the information processing device 300. 10 [0094] Or the components const! tuLtntj the E n I ormat i on process Lrtq dev i ce 200, 1. he i rtlage/souifd s 1 gna I gener.a tinq unj t 2b0, the i maqe/sound compress i nq UEI I L 260, and the stream transmitting unit 270 arc shown as a data transmission system 15 201 in Figs, 6 through 8. Meanwhile, the antenna 210, the wireless communication unit 220, the control signal receiving unit 230, and the control unit 240 are shown us a line control systen? 302. [009b| 20 Of the components cottsLi LuLinq the i tit otmati oh process i ruf dev i ce 300, the antenna .310, the wi relets communication unit 320, the sLrtam reeeiviftq unit 330, Lhe control unit 370, and the control siqnal. transrtti.tt i nq un.it 380 arc shown as a 1 i ne control system 301 in Fiijs. 6 l.hrouqh 2£j a. Meanwhile, the imaqe/sound decompress i nq unit 340, the image/sound output unit 3b0, and the user information acquiring unit 360 are shown as an input/output system 303. [00061 Also, fc'igs. 6 through 8 show an example where an image 30 based on image data transmitted from the information processing device 200 is first displayed as the sub imago on 37 SP3b3083WO00 the display uh i L 35"J of the information processing device 300, and a low power consumpli o" mod ft i s set in the information processing device 200. In the examptft, an image based on i maqe data transmitted from the informal! on processing device b 200 is then displayed as Lhe itta i ri image on the display unit 351, and a regular power consumpl i on mode i s sftt in the informal Eon processing device 200. That is, figs, 6 through 8 show an example of a connection setup between the i nformation processing device 200 and the information 10 processing device 300, and an example o< Lransition of the power consumption mode in the information processing device 200-[00971 Iiirst, when Lhe information processing device 300 ia 15 powered on, Lhe previous output format (the output formal aL the time when the informali on processing device 300 was powered off) is set as the oulpul formal [the image display formal and the sound output formal) of lhe information processing device 300 (501). The control unit 370 of the 20 information process i ng device 300 causes the management. information holding unit 390 [shown in Fig. A) to hold the managcmenl information about the respective source devices connected to Hie information processing device 300 through wireless cominufii oaf-.lon. Based on the previous output format, 2b the control unil 3/0 of the information processing dev E ee 300 causes the display unil 3bl to display the images 11 and 12 corresponding to two si reams transmitted from the inf orirtali on processing device 200 and the information processing device 400, as shown in Fig, b- 30 [00981 An operation to sel an output format (a changing 38 SP3530E3WOO0 operation.) is then supposedly performed by a user (502) . In this C(ise( a control signal related to the setting operation i s acquired1 as user information by the user i nl ormaLEori acqu.i.r.i Eic] un i L 3G0, and (..he uaer i nr.oriaaLioit is ouLput to the 5 control unit 370. The cunLrol unit 370 then changes the contents of the information hold in the management information holding unit 390 (shown in Fig. 4) based on (he use i" i n farina ti on {503,. 504] « For exainpl e, a seLL.i.nq operation (changing operation) is supposedly performed Lo .10 chartqe Lhe image "II based on Lhe image daLa Lr.arismi.LLed from the information processing device 200 to the sub image, as shown in b in fig. 5. in this case, the control unit 370 ohanges the output format 396 (shown in Fig. A) of the informal ion process E nq dev i oe 200 1 rL the mafiagefneriL 15 information holding unit 390 Lo "sub" (b03, o04). [0099] The information processing device 200 transmits a mode table request (a guery request for resolution/audio quality, low power consumption mode, and the like) to the information 20 process i nil device 300 on a regular basis or on an irregular basis (or only at the time of the start) (505, 506). This mode (".able request is for requesting transmission of the respeoLi ve pi eoes of information being managed in the .i.nforration processing device 300 (the respective pieces of 25 i n formation are the management information about the informal ion processing device 300, and the information to be used i n columnnr cation with the information processing device 200 (such as the information about the resolution that can bo displayed on the information processing device 200)). 30 [0100] Receiving Lhe mode Labi e request (SO6} , the information 39 SP35:*OB3KOOO proccysi nrj dev i ce 300 t rartsml ts command information in. response to the mode tabic request [the command information includes resolution/audio quality, the types of image and aud i o codecs, the exi stenne/non-exi stence o( a J[~i ( line t i on, b Lhe existence/non-existence of content. prolecLion, the di spl ay si ^f ftE t"hfidispldy deuit;tf Lopoloijv i nl'or rtiat ion, lhe availab I e pro Loco I s, Lhe ae tt i nq i nTurma ti.on [such as port information) about these protocols, connection interface information (such as the connector typo), the positions of 10 hori zontal synchronization and vertical synehronizati on, the [lerfo reliance pri ori I. y request, i M ormati on about the source device, a mode control table response such as the compatiblity/imcompatibility with the low power consumption mode, the maximum throughput that can be transmitted or IB received by radio, the power of the Central Processing Unit (CPU), the remaining battery level, and power supply i nformat! on) (507, 50B) . The command information is the i nformati on about, the information processing device 200 that is des i gned for the i nformati on process i nq device 300 to 20 request settings Trorn the in formation processing device 200 while talcing into account the radio wave propagation environment and the display form. The command information is also information that includes the output format i nformation about the resolution/audio quality, and the 2b compatibility/imcompatibility with the low power consumpt.i on mode. These pi eoes ot information is also included J n Lhe oapabi1i ty i nformation. Here, the output format informs t i on abouL (lie re.^ol uti on/audio qua I i ty of the information processing device 200 is information indicating 30 that the output format of data transmitted from the information processing device 700 is "main" or usub", The 40 spnsriosnwooo information pr.oeesziii nq devi ce 300 incorporates a request related to the seLL.i.nqs oi Lhe- resolution/audio quality and the low power consumption mode? i ri the fcra of parameters into the command information from the viewpoint, of Lhe i n format ion 5 processing device 300, and then Lrarisiiii La the command information. Other than the rcspecLlve pieces of information about the information processing device 2U0, Lhe E nformation processing devi oe 300 may also transmit Lhe respective pieces of informs Li on about all the source devices 10 iia Lhe command information. In Lh i s casft, the information processing device 200 selects and uses only Lhe information about the i.n I onna t i on processing device 200 . A devi ce compliant w i Lh Wi — K"i CERTIFIED Miracast is coulpaLibt e with wfd-audio-codecs, VJid-video-formats, IS wfd-contcnt-proLecLi on, wf d-displayodid, wId-coup 1 eilsi nk, VJfd-oIient-rtpporLs, wi d-T?C, wfd-uibccapabiliLy, w f'tt- connect ortypo, wfd-sLandby-resume-capability, and Lhe I ike, which are defined as RT3P Message. In this command, houcvet, Lhe contents of the message Lo be Lransmi tted is not 20 particularly I Emi t. ed. [0101] In a case where the command information J s received (b08i , the control unlL 24Q of the information process i.Tio; dev i ot? 200 identifies Lhe output format of the data 25 transiti tted from the inlormaLi on processing device 200 as "main" or "snb" bas&d on the command i nformation- The control unit 240 of the information processing device 200 also determines whether the information processing device 300 has a function compd t ihl e with a power con sump Li on operation mode 30 based on the command information. The control unit 240 of Lhe information processing device 200 Lhen transmits mode :JF353083WO0Q setti.nq information indicating that the identified output format is to be sel, to the i r\t omis t i oh procesfti ng dev i c:e 300 (509, 510) , In this example, Lhe output format of I he dtftrf from the information processing device 200 has been b identified as "sub". Also, the information processing device 300 has a function compatible with the low power consumption mode. Therefore, the control unit 240 of the information processing device /!00 Lr^nymt [_.H mods H ft lit: i rig information to the informal ion process i rig dev i ce 300, Lo 10 notity the information processing device 300 that the identi M ed output tormat (sub) is to be set, and the low power consumption mode is to be set (509, 510). [010> I In Lh i s exampl e, the 1 ow power consumption mode is set 15 after the image i s rdenti ti ed as the main image or as the sub image based on Lhe command informati on. However, the low power consumption mode may be set, re^drdlftss nf whether the image is the main image or whether Lhe i rnatfe i s l.hft sub image. For example, a permission flag for permitting transition to 20 the I ow power consumption mode is exchanged between the source device and the sink device, and the \ ow power consumption mode may be set. [01U3J The control unit 240 of the information processing 25 device 200 then sets a sub mode as the transmission mode [511) . AM a result, the rcsolutJ on Tor di sp! ayi ng the sub image, and the audio quality for uu tpu tt i ng sub sound are set in the data transmission system 20T (51^) - Meanwhile, the low power consumption mode is set i n the line control system 202 (513) . 30 [0104} In a case where the low power consumption mode is set 42 SP353083WO00 as descri bed above, both the sink device and the source device need to have Lhe correapondi Jig funorion, For example, a mobile device (such as a por Labi e Lei ephone, ^ smar(.phone, or a tablet terminal} is normally ba LLer y-dr.i veil. Therefore, S i f the output format of data transmitted from its own device (where the output format is "sub"), the battery power consumption of its own device is preferably minimized, in view of this, iL is preferab l.e to set: Lhe I ow power consumption mode in a source device having Lhe output format in the sink 10 device set as x'sub" . further, J it Lhe sett i nq process [SI2) , a setting may bo provided so that only Lhe sound or Lhe source device assigned to the main imago is reproduced through Lhe speaker, but the sound of the source device assigned Lo Lhe sub imaqe is not reproduced. Alternatively, a setting may 15 be provided HO that the volume of the sound of the source device assigned Lo Lhe rtia i n i maqe i a mai nly increased, but the volume of the sound of the source Litzvlf:.? assigned to the sub image i s lowered at the Lime of r.epr oduet! on . 101051 20 Aa described above, the control unit 370 of Lhe in forma t.i on processing device 300 p<2L forms con t. rol for scttinq Lhe low power consumption made in Lhe inTormaLion processing device 200 in a case where the output format is set as the sub iniaqe (sub di splay) . That is, the control unit 2b 370 of the informaLion processing device 300 performs control £ or setting a power consumpLi on mode? in the information processing device 200 based oh the output, format of the display unit 351 that outputs image informaLion based on a stream. 30 [010G] In a case where Lhe low power consumption mode is seL A3 SP3b30B3WO00 as; described abc-ue (513) , the contv.o 1 tjni t 240 of the iiiionnation ptoccsa i nq device 200 starts intermittent transmi ft A ion (514 through 522) . [0107J 5 hjpeci fi oally, the inforinati on processing (lev i ce 200 suspends the transmission process tor a certain period of" time, and puts the respective components to ftleep (514) . After the certain peri od of time has passed (514) , the information processing device 200 wakes up the respective components o I" 10 the information processing device 200 so as to perform a transmission process, and performs transmission to the information processing device 300 [51b through 520). I010R] For example, the control unit 240 of the information 15 processing device 200 transmits a query message to the informs t f on processing device 300, to check whether there i s a change (sitch as a change of the output format) in the information processing device 300 (bl b, 516) . 101091 20 "Receiving the query message [516), the control imit.370 or the informat.i on processing device 300 transmi ts a response message to the information processing device ?00, to notify the information processing device 200 whether there is a change [such as a change of the output format) (517, 510). 25 In this example, there are no changes {such as a change of the output format) in the informati on processing device 300 . Therefore, the control unit 370 of the information process \ rig device 300 transmits a response irtessage to the information processing dev f ce 200, to notify the information processing 30 device 200 that there are no changes {such as a change of the output format) (b17, 51S). 44 SP3^oo:iwooo lonot As described above, in a case where a response message to the effect that there arc no chanqes (such as a change of the ouLpuL format) is received (518), there is no need to 5 change any yetting in the information process i.nq device 200. Therefore, Lhe control unit 240 of the informal, i on processing device 200 Lransmi ts a stream for outputting Lhe sub image and the sub sound, Lo Lhe information processing device 300 (510, 520). Receiving Lhe stream (520), the information 10 processing device 300 outputs an image and a sound based on the received stream (521) . For example, the image 11 based on the stream from the information processing device 200 is displayed as the sub image on the display uni I; 351, as shown in b in Fiy, b, "15 [0111] When the trarisiui asiun process ends [519) , the information processing device 200 suspends the transmission process for a certain period of Li me, and puts the respective components to sleep (522) . Also, InLermiLLent transmission 20 i s continued unLi1 a change request is issued from Lhe inf ormatioii processi ng device 300 , 10112] Tn the intermitLenL Lratismi ssion, there are periods durlnq which any stream is noL transmitted from the 25 infoi/inati on processing device 200. Therefore, the inforinaLi on processing device 300 preferably performs a disp.l ay process to intcrpoiaLe and then display the image correspond!ng to the stream lasL received from the informal i on processing device 200. However, the information 30 processing device 300 may not have an interpolation process E miction. In such a case, any image f irum Lhe 5 n format ion Ab SP3S3O83WO0O processing de.vi ce ?00 nannot be displayed on the display unit 3f>l during the sleep period. Therefore, in a case where the information process i rig devi oe 300 does not have an interpolation process fuhctirm, transmission of image data b I" rom the information process i ri-trj devi oe 200 may be continued. For example, among the streams to be transmitted from the iillomiction processing device 200, Lhe last image data at the time of trans-mi as ion suspension is stored into a LraiEsifti ss ion buffer. During the sleep period, the image processing in the 1 0 E nformation processing device 200 is suspended. However, Lhe transmission process is continued for the radio link:, and the transmi ssion of the imago data stored i n LSit? transmission but £e I" i s eon tinned. [0113] If} Also, du J"i ciq the sleep period, only the image en ^responding to a stjieactl transmitted from the information processing device 400 may be displayed on the display unit 3b1 . For example, the image corresponding to a stream transmitted from the information processing device 400 can 20 be displayed nn the entire surface of the display unit 3hl. [0114| Next, an example case where an operati on UJ set an output format (a changing operation) is performed by a user is described. 2b [0115] In a case whore an opt?rati on to set an output format (a changing operation) is performed by a user (531), the contr.yi unit 370 changes the contents of the information held in the management information holding unit 390 [shown in fig. 30 4J based on the user inforrunti on related to the setting operation, as described above {.432, T>33) . for example, a 46 SP353083WO0O setting operation (changing operation) is supposedly performed to change the linage 11 based on the imago data transmitted from the information processing device 200 to the rnai n image, as shown in a in Fig. E3. In this case, the control b unit ^70 changes the output format 396 (shown in Fig. 4) of Lhe i n ["orinati on processing device 200 in the management. information holding unit 390 to "main" (b32, b33J . [0116] In this example, in a case where the low power 10 consumption mode has been set in the information processing devi.ee 200, the information processing device 200 has been supposedly put. to sleep as described above. In a case where the ini.onnaLion processing device 200 has been put to sleep as described above, it 1E> not possible Lo noL t fy Lhe IB information processing device 200 LhaL an operaLion Lo set .3n output format (a changing operation) has boon performed by a user. [0117] In a case whore an operation to set an output format 20 (a changing operation} is performed by a user (531) , and the contents of the information held in Lhe managomenL i n ["cniirfLion holding unit 390 (shown in Fig. 4) are changed (532, 533) , the control unit 370 of the information processing device 300 sets s change trigger [^31). This change trigger 2fi is the trigger f.or r*oti f yi nq the i n format ton processing device 200 that an oporaUon Lo set. ^n cm (.put format: [a changing operaL i on) ha« been performed by a user, when a query message is received from Lhe i.rironiidL i on processing device 200- With this change trigger, Lhe sLate where Lhe 30 i n I ormation processing device 200 J s i n a sLandby mod*? i s cancel ed, and the information process i_Eiq dev i ce 200 i y 47 SP353083WO0O noL J ri.e?d Lhat an opera Li on Lo aeL an ouLptiL format (a changing operation) has been performed by a user. E011G] Til this example, the respective components of the b i nf orjiiation processing devi oe 200 are then woken up, and tranami saion to the inf ormati on processi nq devi i;e 300 i.a supposedly started. Tn this ease, Lhe conLrol. uniL 370 of Lhe informaL ion piucesaing device 300 transmits a standby cancel la Lion message Lo Lhe information processing device 200 10 1535, 536). [0119] Receiving the standby cancel] ati.on message (536), the control nni t 24(1 of: the in J" ormati on process f ng devi oe 200 L ran stui In a response message to the i n CormaLi on process i nq Tb device 300 (537, 53fi). [0120] As described above, in accordance with Lhe sLandby mode cancellation request from the sink device {535 through 538) , the information processing device 200 needs to inquire for 20 the setting status. Therefore, the control unit 240 of the information processing device 200 transmits a mode table request to the information processing device 300 (539, 540) . As described above, this mode table request is for requesting transmission of the respective pieces of information being 25 managed i n the i nf ormation processing device 300 (t.he respective pi eces o£ i nformal:? on are the management: information about Lhe i nformati on processing device 200) , In the above described procedures (53b Uirouqh 538) , exchanqe of a message [Lhe response rtiessaqe i n rep] y to t lie query 30 message in Lhe prucediiwfi (515 through 518) , ror example) to the effect LhaL Lhe re i s a change {such as a change of the 48 SP3b3033WO00 ouLpi.it format) may be performed. 10121] Recei vi rig the mode table request (540) , the information processing device 300 Lransrni ts the; command information in 5 accordance with Lhe mode Labi e request. (541, 54 2} . Tn a oase where the command information. has already been Lranstui Ll.ed from the information processing device 300 Lo Lhe irif ormaLion process i ng device 200, the information processing device 200 haa al ready obtained the information included in the command 10 informaLi on . Therefore, the; information processing device 300 may transmit only difference informal! on as Lhe command information in accordance with the mode table request (541, bA'/) . Thi s difference information is the information related Lo Lhe t^hanqe, and i s the resoluti on/audio qua! i.ty 15 output forma L i n forma Li on abont the i nformati on prooessi ng device 200, for example. [0122] In a case whore the command information is received (b42) , Lhe control unit 240 of the information processing 20 device 200 i den Li M e$ the output format of the data transiiiiLled I tym the i n forma ti on prooessi ng device 200 as "main" or '''sub" bayed on Lhe cornrnand tn TormaLi on , The conLro I unit 240 of the information processing device 200 then trans mi ts mode setting information indicating that the 25 identified out.pt.lL I orinaL i a to he set, to the i nformati on processing device 300 (b43, b44} . In, Lh i s ex amp I e, Lhe ouLpuL format of the data from the information processing device 200 has been identified as "main". Therefore, the control unit 240 of Lhe J n TorrrraLi on processing device 200 transmits mode 30 setting inf ormuL.i on Lo Lhe i rii ormati on prooessi fig devioe 300, to notify the information process I nrj dev i ce 30D LhaL 111^ 49 ,tJP3o30S3W000 identified output foLmaL {main} is to be set, and the regular power consumption mode is to bo set (o43, b44), A device compt i ant with Wi-L'i CERTIFIED Mira^ast may carry out the procedures [539 through 544) through Capability 5 Re-neqoti at ion . In the case of Capability Rc-negoLiaL±on, there is no need to renegotiate setting values that do noL have any etianqes i si the output format in the procedure (534) . Such setting values are of wf d-d i sp]ayedid, wfd-nl i.ent-rtpports, wfd-12C, and wrd--eori[ieeLort ype, Tor 10 example. [01231 The control unit -!40 of Lhe i n.formati on processing device 200 then seLa a ma i ri mode as the transmission mode (545) . Ttocordingly, the resolution Tor d i sp I ) . This mode status change not if iea t iuti is i n formation for noti fying the information processing device 200 of not only the ouLpuL formal, ("main" or "sub", for example) changed by a user, but also the resolution/audio quality that can bo set by the information 25 process i no; devi oe 200, compatibility/incompatibility with the low power ccinstimpt:i on mode, and the like. [0137J Receiving Lhe mode sLalus chanqe notification (5fl5), the control unit 240 of the informal i oh processing device 200 30 delertni nes the contents of the setting (such as resolution/audio quality and a power consumption irtode) . 55 SP3530S3WO00 Th.i s procedure for determining the contents of the setting is the same as the above described determination procedure . The conlro.l uni t 210 of the in/ormati on processing devj ce 200 then transini. La a mode change request. to the informal ion 5 processing devE oe 300, to notify the i nformation process.i.nq device 300 of the determined contents of the setting (such as resolution/audio quality and a power: consumption mode) {586, 587). E0I38] 10 Rccciv.i nq the mode change request (587), the control utki t 370 of the information processing dev i ce 300 determines whether to permit Lhe oontents of the seLtincj [finch as resolution/audio quai i Ly and a power consumption made) specified by the received [node nhang^ request. The control 15 unit 370 of the information processing device 300 then transmits s mode setting perrui ssi on/prohibition commit rid to the informs t f on processing dov.i ce 200, to notify the information processing device 200 of the result of the determination 40 then transmits a query message to the information processi (iq devi ee riOO (step SI00R). The control unit 240 then determines whether a respyiiat me.ssdqe has been received from the information, processing device 300 (slop Si 009) . Tf any response message has not been received, 10 the control unit 240 continues monitoring. Tt any response message has not been received even after a certain per. tod oJ standby time, the process may time out acid come Lo an end, For example, according to Wi-Fi CERTIFIED KlraeasL, a time-out. period of five to nine seconds is set depending on 15 circumstances -[01531 If a response message has been received from the information processing device 300 (step 131009), the control unit ^40 determines whether the response message includes a 20 change request [step S1010). It the response message includes a change request (step S1010), the control unit 240 returns to step 31001. [0154] T f the response message does not include any change 25 request (step Si 01 0) , the control unit 2 40 determines whether a change request has been recei ued (step SI011) . It a change request has been rece.i ved (step S1011) , the control, unit 240 returns to step 131001. If any chanqe request, hay net been received (step S1011), on the other hand, the control unit 30 2 40 determines whether a transmission stop operation has been performed (step 3.1 01 ?} . Tf ^ transmission stop operation has 61 sp3530fi.3wooo been performed (sLep S1 01 2 ) , Lhe conLcol uniL 240 ends the data transmission1 process. If any transmission stop operation has not been performed (step £31012) , on the other hand, the control unit 210 returns to step Si005 * 5 [0155] [Example Operation of an Information Processi nq Di^y i ee (a Sink Devi oe] ) Fig . 13 i.a a ElowcharL showing an example of the processiny procedures- in a data transmission rate control 10 process to be performed by the information processing devi oe 300 in the first embodiment of the present teohnol oqy . Fig. 1.1 shows an exampl e case where The in! onrlaLi.on processing devioe 300 determines the f:onterit^ of Lhe tfeLLi.ngs (such as r eso t uL i on and power cotisumpL i.on irtodeBt in source devices 1 b when streams (i "i may be changed, Alternative I y, a M.er the threshold for throughput is changed, a step equlva I etil. to step 51025 may be further carried out. .Step £1021 is an example o£ Lhe wireless communication step of the claims . Also, steps Si 023 throuqh si 112H are an example 30 ol the control stop o£ the cla i.rcis. [0166j 65 SP3b30H3WO0O Tn the above manner, 1L i.s possibl e to realize a control protoco I i n which the sink, device Lraina a 1 i ne environment for a certain period of time, amA noL-i ( ie« the source devices of a resolution that enables slabie video communication. 5 Alternatively, it is possible to realize a control protocol in which a source device trains a line environment for a certain period of L i me and requests a resolution that tnab Ley stable video communica t.ion, and the sink device responds to the request. 10 [0167] As described above, the control unit 370 of tile information processinq device 300 can perform data transmission rate control un two streams transmitted froiii the respective source devices based on the management information 15 i n l:he management inforcnat i on holding unit 390 and the user informal i on acquired by the user information acquiring unit 360. [0163] Control may be performed so as to minimize the Lotai 20 data transmission rate of two streams Lransmitted from the infonndlion processing device 200 and the information process.Lnq devi ce 400 . Lhor example, the maximum permissible value of the Lota 1 data transmission rate is set i n Lhe control unit 370 of the i reformation processing device 300 on the 2b receiving side. Af"ter transmitting a change request lo'f lowering the bit r&te to ("he information processing devi.ee 200, the control unit 370 obl£ ins, from the stream receiving unit 330, Lhe hit rates of the two streams transmitted from the informal, ion processing devices 200 and 400. The control 30 unit 370 then calculates the total data transmission rate of Lhe obtained two streams. The control Lin it 3/0 then 66 SF3530e3WDOO determines the bi [ rate of streams to he transmitted from the in format ion processing dev i ce 400 wi Lhi ri a rainje that does not exceed the maximum perEiu.ss i b I e va I ue. The (:otil.rot imi I. 370 transmits a change request for increasing the biL raLe 5 to the information processing device 400. In a case where the PER is too high to fall within the same frequency channel even i t the hit rate is set at the minimum bit rate, another frequency channel may be used. In a case where the imaqes (the main imago and the sub linage) are fixed over a certain TO period of time, the image data may be stopped unless an operat i nn (sur,h as pointing) is performed by a user. [0169] As described above, according l.o the first embodiment of the present technology, approprd ale data transmits i on r.aLe 15 control can bo performed in accordance with an operation, a status, or an intension of a user, even in a case where a single sink dev i ce recei ves streams transmitted from source devices . For example, the data transmission rate of one of image and audio streams can be towered, and the data transmission rates 20 of the other streams can be increased, in accordance with an operati on, a status, or EHI intention of a user. [0170] L'or example, in a case where a sink dev i ce recei vey acid di splays streams, important images and sound with high 25 quality can be enpiyed as intended by a user depending on time and circumstances. As for. less i rnportan t iniaqey and wound without high quality, the data t ran ami ss i OEI rates cm be: automatically adjusted to optimum frequency channels, opMmuin power consumption, and optimum transmission rates. 30 [01 n 1 As Tot the management information held in the 07 rnariaqement information holding unit 390, a command prepared according to Wi-Fi CERTIFIED Miracast can be used in exehahq i ng the management information, for example . In Lhis case, the management information exchange" can be performed 5 through capability iiegoL.i.aL i on or oapabi 1 i ty re-negotiation defined in the Wi-Fi Display speci f"i t:a t i OIIH . Here, capability negotiation or capability re-rioyoLiaLion may be the KFC5939 or Wi-Fi CERTIFIED Miracast specifications, for example. However, capability negotiation or capability 10 re-ncgotiation J s noL t i Hii ted to the; above, and defines exchange of device per. forma nee i n i o rma t i nn« F.xampt es of exchange using commands according L Hi orrciaLJ on processing b device 200 performs cortirilun i.eal E on w.i. Lh Lhc information processing device 300 so as Lo exchange the capability information about Lhc information processing device 200 and the capability information about the information processing device 300 . In those cases, the wireless communication units 10 220 and 320 can perform exchange of the capability information through capability negotiation or capability re-negotiation. [0182] The control unit 370 of the information processing l!j device 300 performs data transmission rate control on streams wi tb the information processE ng devi oe 200 based on Lhe oapabi lity iniorma tion about the informa Li on process inq devi ce 2 00, the radio wave propagati on measurement i n I oncia t.i on about ooiiimtmi cati on wi Lh Lhe in TuntiaL i on 20 process i.nq dev i ce 200, and the manner of use of Lhe i n fonnaLi on processing device 300. Also, under Lhe control of the information processing device 300 based on the capability information about the information processing device 200 and the radio wave propagation measurement 2f) information about stream communication with the information processf nq device 300, the control uni t 2:40 of the i nforma Li on process? nq devi ce 200 can perform data transini ssi uri rate control on sLv earns w i Lh Lhe i rifor rua Lion process i nq device 300, though the stream LransEdission method differs from Lhat of 30 the embodiment of the present technology. [01H31 72 SP353083WO00 The control unit 370 of Lhc information processing device 300 performs control to set a powpr consLimption mode i n the i nforma Lion processing devf ee 200 based on the capability information about Lhe information processing 5 rif.v i ce 200 (such, as the information indicating whether Lhc information processing device 200 is a mobile device} . In this case, Lhc control unit. 370 can perform control Lo sot Lhe low power consumption mode in the information, processing device 200 based on the capability information about the 10 information processing device 200 and Lho management information for managing the wiiormation processinq device 200, The control unit 240 of Lho information processing dev Ice 200 also sets a power consumption mode under the control of the informal:! on processing devi oe 300 based on the 1 b capability inf ormati on about the informsti on processing device 200. AT thouqh an example of tnpoIogy in which the number of source devices is two has been described i n the embodiment of the present technology, the present technology is not limited to this embodiment of the present Lcchnology. 20 L'or example, i I the number of source devi ces is two or larger, it is necessary to perform data transmission raLt- control for each of the source devices. As a resulL, sLatc transition often occurs, and the control becomes difficult. 5ti1E, Lhe exi sl.ence of Lwo or more source dev \ ccs is beneficial , The 2b ptesenL technology can be applied Lo topology in which two or more source devices are connected. [0164] <2. Second Embodiment> To (.he above described first, embodiment of the present 30 technology, conLrol on wireless communication is performed Sia^ed on user, information and management information. Tn a 73 SE73S30B3WO00 case where a source device is a mobile duvice, for example, the source device probably moves around. In such a case, the source devi r,e might move out of the area depend i nq nn Lhe frcqiteiicy channel. In such a case, it is critical Lo aeL art 5 appropriate frequency channel and realize stable t ransmis s ion, [01851 Tn uiew of this, a second cmbodinienL ol Lhe present technology shawa an example where an appropriate frequency 10 channel is set f.or a sourcft device that can use more than ono frequency channel. T01861 [Example Configuration of" a Commnni oati on System] Ftq. 17 is a block, diagram showing an example system 15 configuration of a communication system VOO in Lhe second embodimenL ol the present technology. [01871 The configuration ol Lhe communication system 700 is the same aa the configuration of the cotfiinunlcaI f on system 100 20 shown in Fig. 1 . Therefore, the same components as those of tho commun i cati an system 100 shown in Fig. 1 are denoted by the same reference numeral s as thos^ used in Fig. 1, and expl a nation of them will bo panLla 1.1 y ak i pped i n the deser.i pi.ton below. 25 [01881 However, Fig. 1 / differs from Fig. 1 in that tho radio wave reachable regions of two different frequency channels are ahown as the radio wave reachable regions (service areas) ol Lhe information processing de.vi (.:& 300 by ellipses 701 and 30 702 drawn with dotted lines. For example, a first frequency channel .1 s a frO GHz band, and the radio wave reachabi e region 11 SP353G83WO00 of the first frequency channel is represented by the ellipse 701. A second frequency channe \ is a 2.4 GEIy band, and the radio wave reachable region of Lhe second frequency channel i s represented by tho ellipse 702, b [01891 Here, the radio wave reachable region 701 means the reg ion [servi ce area) in which the information processing devices 200 and 400 tfre supposedly able to transmit streams to the informal i.on process! no; devi ce 300 through the H rst 10 frequency channel. The radio wave teachable s.eqlon 702 means Lhe reqi on [servi ce area) in which the information processing devices 200 and 400 are supposedly able to transmit streams Lo Lhe information processing device 300 through the second frequency channel. 15 [0190] Jj'ig. 1 7 shows an examp I e case where Lhe i n forma Li on processing device 200 is a mobile device, and Llie information processing device 200 moves around. In this example case, when the information processing device 300 and the 20 information processing device 400 are transmitting streams, Lhe i nformation processing device 200 and the information proc;RHsi ng device 300 conduct a connection process. [oi9ij As descr i.bed above, the information processing device 25 200 is movable. Therefore, ay i ndi oated by an arrow 7 03, for example, at the start of a connect ion process w.i. Lh Lhe i n formation processing device 300, the information processi nq devi ce 200 might exist outside tho radio wave reachabl e reqf on 701. Flowever, while the connection process 30 is be i nq performed, the information processing device 200 .might move "Into the radio wave reachable region 701. Also, 1^ SP3o30B3WOOU AR indicated by an arrow 704, for example, at the-, start of a connection process wt th the information process i nq device 300, the information pi ones sing device 200 might e?y. i st i nsi de the radio wave reachable region 701- However, while the 5 conntct i on process is being performed, the information process i ng device 200 might move out of the radio wave reachable req i on 701. [01*32] In a case where the information processing device 200 10 exists on the boundary of a radio wave reachable region fa service area boundary line) during a wireless communication connection process, the connection process might take a long time, and an image transmitted in <* stream might be disturbed, In this case, wireless communication Lhrough the; other link. Tb sharing the same band (such as the link between the inforiiia ti on processing dev i ce 400 and the information process i nq device 300) might be a ( I"eoted . [01931 There!ore, so as to cope with the connection 'JO environment shown i n Fig . 17, the session connect5 ng process between the i n [urination processing device 200 and the i nformation process i nq device 300 preferably uses the frequency band with the larger service area between the two frequency channels. In the second embodiment of the present" 25 technology, the second frequency channel {2.4 Gilz band} having the larger service area between the two frequency channels- i s used, for cxampte, [01941 That is, when the communication quality specified by 3Q the radio wave propagation measurement inIoi"tii^ti on is degraded, and there is the need to limit data trarisen i.ss i on 7f, SP3530Q3KO0O rate control, the control unit 3/0 can perform control V.a ehanqe the frequency channel being used to a frequency channel with a hiqher data transmission rate based on the radio wave propagation measurement i n rorma! i on ^nd the manner of use of F> the information processinq device 300. When the communication qual i Ly speci f"i eH by the radio wave propaqati on measurement information is degraded, and there i s the need I u 1 imit data transmission rate control, the control unit 370 can a t so perform control to change the frequency channel being 10 used to a frequency channel with a lower data transmission rate based on the radio wave propagation measurement i nf ormation and the manner oT use of." the i n I orina ti on processing device 300. for example, when the cormnunfcat Eon qua 3 i ty specified by the radio wave propagation measurement 1 b i tiformatf on is degraded, and there is the need to limit data trail ami ssi on rate control, the frequency channel is switched from the second frequency channel being used to the first frequency channel so that a hfqher datrf transmission rate is achieved based on the radio wave propagation measurement 20 infonnat.i on and the manner of use of the information processing device 300. To achieve a lower data transmission rate, on the other hand, the frequency channel is switched from the ('. i rst frequency channel being used to the second frequency chanrief , Tn this embodiment of the present 25 technology, not only the swi tohinq of frequency channels but & \ HO some other methods may be used- For exarrtp! e, data transmission rate control can be perfoEiued by cha]ic[inq bandw Ldthy * Tn an example case, several bandwidths are supported according to 302.11, and there exist the 20 MHz 30 width, the 40 MFTz, width, the 30 MHz width, the 160 MHz width, and the like. As the bandwidth becomes larger, the data 77 SP3blOSffiOOO transmission rate becomes higher. Therefore, when the communication, quality sped I i ed by the radio wave propagation measurement information is degraded, and there is the need to limit data transniiss ion raLe control , the control unit 370 5 may perform control to Increase or reduce the bandwidth. As described above, the capabi I i l.y setting is comprehensively performed in the information processing davits 200 based on the manner of use of the information processing device 300 (such as the display l.ornidt of the display unit 351 and the 10 moving state of tho information processing device 3001 and the radio wave propagation environment. Accordingly, the sLabi I i L".y of the entire system can be increased, [013b] in a ease where the information processing device 200 Ifi moves in the di.vect.i on of the arrow 704, the information processing device 200 moves f n such a direction that the quality of wireless communication becomes lower. Since it-is di J" Moult to cope with narrowed throughput and lowered quality, the frequency channel needs to be ehanqed, 20 [0196] In a case where the information processinq device ^00 moves in the di.recl;iiin of the arrow 704, a user may be made Lo issue an instruction Lo increase the image quality and the audio quat i ty of the other link by cut Li nq of i the i n formation 25 processinq device 200F or an instruction Lo change the frequency charnieI u£ the information processing device 200 without cutting off" the information processing device 200. For example, a pop-up lor issuing a permission to increase the image quality and the auduj quality of the other link, by 30 cutti ng off" the information proves si ng device 200 may be displayed on the information processinq device 300, and the 78 pop-Up can cause a usicr to issue an instruct i on. Also, in a case where an indication as to whether the pop-up is Lo be d i sp I ayGii on Lho information processing devi ce 200 is displayed on the information prooessinq device 300, and an 5 instruction to display the pop-up od Lhe information processing device 200 is issued, for example, the pop-up may be displayed on Lhe information processing device 200- In Lhi.s case, Lhe user of the information processing device 200 can issue an instruction. Also, so as to secure more stable 10 links, it is preferable to start communication by selecting a communication method having a lower transmission rate than a hi gh-transmf ssi oil-rate communication method at the start of s connect, t on process. [019V J 1.5 in a case where the outotf i s permit.Led through the pop-up, for example, the i ni orrtiaLion processing device 300 performs a process For suspending stream transmission to and from the informati cm processing device 200 until the link radio wave propaqaI t on state improves, in this case, l.h« 20 management i nformaU on about the information process i rig device 200 held in the mamaqement information holding unit. 390 i s erased. |019H[ Also, in a case where the cutoff is not permi I.Led through 25 Lhe pop-up, for example, the information processing device 300 performs a process for changing the frequency channel of the information processing devi c:a 200, r oi ^n As described above, Lhe control unit 370 can perform 30 control lo cause the display unit 351 to display the display i nformaL i on (such as a pop-up) indicating whether to perrni 1: 79 cutoff of the frequency channel being used. In a case where a user operation indicating pi" oh i bii.i on of on toff of the frequency channel being used is aecepLed, the control unit 370 per fornix control to switch frequency channels. r> [0200] in Lhe above described example, a user is made Lo issue an instruction when Lhe information processing device 200 niuves in the direction of Lhe arrow 704. Tt is also possible Lo He (".ermine beforehand how Lo per:f orm the process in the 10 above described situation. [020.1 I In a si Lu^l'.ion where stream transmission is being conducted through the link between the information processing device 400 and the informs Li on processing device 300, for l^i example, the process needs Lo be performed so as not to affect Lhe stream transmission through Lhe oLher 1 ink. Therefore, it is pre!tr^ble to determine the setting in advance, rather than cans i CKJ a user to issue an instruction when Lhe information proces^i ng device 200 moves . In this case, links 20 are automatically £;wi.tched, " processing device 300 obtains the management information about the information processing device 200 and the management information about the information processing 10 device 400. [0204] The procedures {801 through 306) and the procedures (807 through 8121 shown in k'ig. 18 are equivalent to the procedures (50Fi through 510) shown in b'ig. 6. lb [O2051 A.I. though FMq, 18 shows the same example of acquisition of the management information as that oT the ft rat ernbod.i merit of the present technology, the management information about each information processing device may be acquired in a 20 different manner. [0206] [Example Operation of an Inf orma t i on Process I nrj Device] Fig. 19 is a flowchart showing an example of the 2b processing procedures in a frequency channel setting process In be performed by the information processing device 300 in the Heoond embodiment of the present technology. Jr'ig. 1.9 shows an examp I e case where the information processing device 300 connects a link (a first link) to the information 30 proccssinq device 2C0, and connects a link [a second link) to the information processing device 300. At the time when 81 the processing procedures shown in Fig. 19 are started, the I" i rst link is conducting con Lent, transvni ssion using the first frequency channel, and Lhe second 1 ink is conducting content transmission using the second frequency channel. Fig. 19 b a I so shows a connection settinq where a check is made to del ermine whether both of the two frequency channels have a problem in terms of data transmission rates, and switching between the Lwo J.reqjuenoy channels is performed at high speed while attention is being paid l.o the data transmission rate 10 oT (..he o the r 1 ink. [0207J V'i rat, the control unit 370 acquires the ma nay erne nL infcrtnaLi on about a first source device [the informs Li on proccssinq device 200) {step S1Q51). The control unit 370 Ifi then acquires L he management information about a second source device [the informsL.i.on processing device 400) (step ST Ob? ) - The respective pieces of the [iiariaqemenL i nformati on are iiel d i n the -management information holdinq un i I- 390 . The manar(ellient information acquisition method is shown i tt Fiq. 20 18. [02081 The coJiLrnt unit 370 determines whether the respective source devices connected to the information processing device 300 are unstable {step Si Qb3J . Tf there is an unstable source 2b device, the image displayed on Lhe display unit 351 is disturbed, tor example. If all the source devices are not unsLab'e [step S1053] , the process reLurns to step S105L. [0209] If one o( Lhe source devices is unstable (step SI0b3), 30 a check is made based on the stability of the link Lo Lhe unarable source device (Larqet source device) {stop S1054) , a2 EP35:i083WO00 for Gzamplc, the control unit 370 determines whether the PER of the source device is equal to or higher than a threshold value [step S1054} . If the PER of the source device is lower than the threshold value, the link to the source device can b be determi ned to he stable. Accordingly, the frequency channel setting process comes to an end. [0210] Although Lhe PFR Is used as Lhe index in deterrni n i nq the stability of Lhe Link in Lhis example, some nther index 10 may be used. Ij'or example, the HER, the RSSI, the PER, the number of packet retransmissions, the throughput, drop frames, Lhe STR, or the like may be used in determining the stability of Lhe link. Further, the receiving side may detent a delay of a packet to be received, and use Lhe in for. ma Lion related 15 to this packet delay as the radio wave propaqat i on measurement information. This packet delay serves as an i ndex re 1 a Led to radio wave propagation, since a delay is caused in transmission to the receiving side through a retransmission prn<:esft in layer 2 when an error occurs, for example, itirthcr, 20 a packet delay serves an an index indicating that some link <:haraeteristics are degraded in a wireless system in which a radi o band is shared among devices, for example. [0211 | If Lhe PF.R of Lhe aonroe devioe is equal to or higher 25 than the threshold value (sLep Sl0b4}f i-he nontrol unit 37 0 t:hHf:kfi the unstable link (step SlObb) . ThaL is, Lhe conL r-o I unit fJ70 determines whether the source device is Lhe M ral source devi ce (step S105EJ) . A check is then made to determine whether there is a tspdf:e i n a different frequency channel from !10 the frequency channel bei ng currently used by the source device (step SI0b6, Si 0b H . B3 SP353083WO00 (0212] If the source device is the second source device (step SiObb}, for example, a check is made to determine whether there is n space: i n a different frequency channel from the 5 frequency channel being currently used by the second source device (step SlQBfi} . If the source device is the first source device {step SiObM, a check is made to determine whether there is EL space in a different frequency channel from the frequency channel beinq currently used by the first source 10 device [step S1057). [02131 As descri bed above, 2.A GHz and 60 GHz are used as frequency channels in the second embodiment of the present technology. The data trsnsiiiiss i on i-aUs of the two f requency 15 channels are assumed Lo be 11I or more ti lues hi qher. However, in the description below, the maximum throughput of the two frequency channels i s assumed to be 30 Mbps, for ease of cxplanution. [0214] 20 After a space in terms of the data transmission rats is checked [stcpS70b6, Si 0571, telecontrol uni h 370 performs a Hi mill taneous operation at 2 . A GHz and 60 GHz on the unstab t e link (step Sl0f)8) . If the first source device (the information processi ng device 200) is unstable; for example; 2F. the first source device (the information, processing device ?00) is made to newly use 2.4 GHz and conduct sL ream coHiwijni cation while switching between 60 GHz and 2*4 GH/r. So as Lo enable seamless switching between 60 GHz and 2.4 GHz in this case, the data transmission rate of streams needs to 30 be lowered to 1 0 Mbps - Tn a situation where switching between GO GHz and 2.4 Gllz is pei'Tornied, streams such as images and 84 £3P353083WaOD sound can be generated, wi th no attention being paid to radio waves . However, the present technology I s not I i mi Led Lo Lhi s embodiment of the present technology. For. example, streams w 1 l-h di tferent throughputs may bo generated at 60 GHz and 2 . 4 b GHs, and be switched while being synchronized. Such a process can be r.ea t i zed wi th the use of a low-delay codec, for example . [0215] in view of the above, the control unit 370 lowers the data transmission rate ol streams Lo 1 0 Mbps, atid transmits 10 a request for performing transmission of streams while swi t ch i nq between (iO GHz and 2. 4 GHz, to the target source device (the information processing device 200, for example) {step Si 0b9) * Tn this manner, the control uni t 370 performs control to limit the data Lrausrni ss i on rate pri or to swi Lch i nq 15 of the frequency channel be i nq used to another frequency channel. [0216] While switching between GO GHz and 2,4 GHz depending on cornniuiii cati on si tnations, the information processing 20 device 300 receives a stream (rem Lhe target source device that has LransmiLLed Lhe request (step 31060}. [0217] The control unit 370 then selects the more stable frequency channel between 60 GHz and 2 .4 GHz. The control 25 unit 370 then LracMtni ts a request tor performing stream transmission using Lhe se I ected frequency channel , to Lhe target source device { Lhe i nForma 11 on process i nq devi t:e ^00, fur example) [step S1060) . As a result, a stable link, is selected, and stable stream communication can be performed, 30 fO^lBl Respective threshold values may be changed depending 85 SP3O3U83WOOO on whether the source device is a mobile device. In a case where the source device is a mobile device, switching is facilitated so that stable transmission can bo realized. [02191 b Tn a case where the source device to be subjected to a i requeney channel change (the target source device) is a mobile dev ice, the bd ttery f s eaai 1 y drai ned i f two frequency channels are simultaneously used. Therefore, the information processing device 200 may make a determination 10 based on i nJoniiaLi on recei ved from the i nformatf on process E ruj device 300, In making this determination, Lhc information processing device 200 needs to acquire respective pieces of information in which the link i ri forma Lion about all the source devices connected Lo the information processing device 300 15 is incorporated beforehand into Lhe information (the command i reformation shown in i-'ig. 6, for example) transmitted from Lhe in format i on pnicftssi nq devi oe 300 , Ry dni nq HO, Lhe information ptoeesH.i.nq dev i ce 2.00 can ael eel a sLab.l e frequency based on the acquired information about all the 7.0 source devices. The information processing device 200 can also determine whether the other link will not be affected. Also, manaqement information indicating that the information processing device 200 is a mob i le device may be sent to the information processing device 300 i n advance so LhaL L he 25 i nformation processing device 300 can determine the frequency channel conductinq stable stream transmissi on based en the data Lransmi.sH f olf rate control information about the entire system. [0220] 30 As described above, the ii'.fuj.maL i on processing device ^00 and the information processing device 300 are information 86 Stf353083»000 processing devices that can perform wireless communication using more than one f reqnency channel. The control unit 370 of the informal ion proceasi nq devi oe 1300 performs control to set one of the frequency chatine I « I h the i nf orma ti on b processing device 200 based on Lho eapab.i I i L y in I on;ia t i on_ about the i nformation processing device 200 and Lho radio wave propagation raeasmement information, in this case, the control unit 370 of the i n format! on processing device 300 can perform contr.ol to set a frequency channel based on the radio 10 wave propagation measurement: ' of omirition obtained by measuring streams from the Inrorlua t i on processinq device 200 whj 1 e switching between the Frequency channel M i a being performed. [0221 J 15 In the second embodiment of the present technology, the first frequency channel is the 60 GHz band, and the second frequency channeI i s the 2.4 GHz. However, the present technology is- not M m i ted to thi s example. For example, the first frequency channel may be L"he !i G\i7., and the second 20 frequency channel may be the 7., 4 GHv , [0222] Also, in the second cmboaJmetiL o( Lhe present teehnol oqy, two kinds of frequency channels nm used. However, the present technology is not J.j EEL J ted to th i H exacipl e. 2b For example, the present technology can be applied in eases where sortie other two kinds of frequency channels {such ay LTU-A and 2 .A GHz, or LTE-A and 60 GHz) arc used. The present technology can a 1 ao be applied in cases whoro three or more kinds of frequency channels are used, for example. The 30 present technology can a f so be applied to an information processing device that uses the thre^ frequency channels of 8/ 2.4 Ullz, b GH'/, and 60 GHz, for example. [0223] As described above, according to the embodiment of the present Leohnol ogy, in a sink device thai, per forms ontpntti ng 5 based on streams ftorn source devices, unnecessary pi>wer consumpL i on can be reduced by stream resolutJ olr ad jus Linen t, transmission suspensi cin.s, and frequency channel changes * Accordingly, commun i ea ti on suitable for mobile devices can be realized. Also, Lhe band usage efficiency of the frequency ' 0 channels can be increased, and cntrmiunf cation with increased robustness can be realized. [0Z24J That i s, as the sink device that manages more Lhtiri one 1 ink also performs ycttedul ing, battery power consumption of lb each mobile device can be reduced. Also, the scheduling of Lhe entire system can be per. formed so that a mobile device thai can use more than one frequency channel will use only one frequency channel. Also, even in Lopoioqy that requi res switching beL"ween df tterent frequency channels, Lhe ^0 switching is f ac i I i La ted by device information (indioat.i nq whether Lhe device is a mobile device, for example] so that. stable transmiss inn cdn be realized. Even if Lhere i s a difference between frequency channels, respective pieces ol i n formation {management i n I orrnation and user information} 25 can be appropriately exchanged- Although an example of topology i n which the number of source deui i:es i s two and two links exist has been described in the embodiment of the present techno t oqy, the present technology i s not I imi ted to this embodiment of the present technoEoqy- For example, if 30 f-he number of source devices is two or larger, i 1. i s necessary Lo perform data LrEinsmi saion rate control for each of links SP3530B3WO00 corresponding to the source dev i ees. Ay a re.^ul t, state; transition often occurs, and the control becomes djfficult, SLi f1, the existence of two or more source devices is beneficial . The embodiment of the present technology can 5 also be appl i ed to topology in which two or more source devices are connected, for example. [0225] The embodiments of the present technology can also be applied to other devices having a wireless communication 10 /oncti on * For example, the embodiments of the present technology can be appl f ed to imaging devices having a wireless communication (unction (such as a digital still camera or a digital video camera [a camcorder, for example)). The embodiments of the present technology can also be applied Lo 1b display devices having a wireless communication function (such as a television receiver, a projector, or a personal computers J , or porLabl e i rt format i on processing devices (such as a smartphone or a tablet terminal J, for example, [022 6] 20 <3. Applioations> The technology according to the present disclosure can bo appl fed to various products. The information processing devices 200, 300, and 400 cart be rea 1 i y.^.d as mobi 1 e termi rial s such as smartphoncs, tablet Persons 1 Computers (PCs), 23 notebook PCs, portable game terciiina l.s, or. di.q i ta I cameras, 1 i xed terminals such as television receivers, printers, d i . device 920- The memory 9'?'2 i ne I udes a RAte and a ROM, and stores the program to be executed by the 92 SP3T>30n3WO00 processor 921, and data. [0237] The GPS module? 924 measures the location (such as the latitude, the lontjiUide, and the altitude) of the car 5 navigation device 17.0, usi ng a GPS signal received from a GPS satellite. The sensor 92b may include a group of sensors, such a.s a gyro sensor, a yeomagnet i o sensor, and an atmospheric pressure sensor. The data interlace 9^6 is connected to an in-vehicle network 94J vis a LeniiJ us I (not 10 shown), for example, and acquires data generated on the vehicle side, such as vehicle speed data. [023BI The content player S'P.l reproduces content stored in a s Lor age medium (such as a CD or a DVD) inserted i n to the storage lb medium interface 926. The input device 929 includes a tolit:h sensor that detects touching of the screen of the display device 930, and buttons or swi Lchfts, for example, and accepts an operation or inform:-tLion input from a user* The display device 930 has a screen such as an LCD or an 0T i deludes one or more antenna el ercicnts, and is used 1.5 for transmi Lting and recei ving radio sJ q rials through the wireless commnni cation Interface 933, [0240t The car navigation device 920 is not Limited to the exarnp] e shown i n ITig. ?1 , and may include more than one antenna . 20 In such a cams, the dutenna switch 934 may be excluded from the structure of the car nav i gat i tin do vine 920. [0^41] The battery 933 supp Lies powet" to the respective b I ecks of the oar navigntion device 920 shown in l"ig. 21, via feed 2b lines partially indicated by dashed lines in the drawinq , The battery 938 al so stores powerx supplied from the vehic I e side, [0242J in the car navigation device 920 shown in Fiq. 21, the control unit 240 described above with reference Lo 1'ig, 2, 30 and the control unit 370 described above with reL~crenct; to fcig. 3 may be implemented in the wireless communicat i on 95 SP3530fl3WOU0 interface 933, Alternatively, at least part of those f unr:1".i oris rnay be i trip Leniented i n the processor 921 . [0343] Also, the technique according to the present di sclosur*^ 5 may be embodied da an in-vehicle sysleiu (or a vehicle) 940 Lhat includes one or more of (_hc blocks of the above descrihed car navigation device 920, Lho in-vehicle network 941, and a vehicle-side module 942. The vehicle-side module 943 generates vehicle-side data such as the number of revoluL f ons 0 of the ftnqj.no or faifurc information, and outputs the generated data to Lhe in-vehicle network 941. 10244] The above described embodiments are examples for embodying the present, technology, and there i s a b correspondence relationship between the matters in the embodiments and the matters of the inventions disclosed in the claims. Likewise, there is a correspondence re3 aL i onship between Lho mattery of the i nventions di sclosed i n lho claims and the matters i n Lho embodi riicnts of the present. U technology having the same names as those of the matters of the invent: oris. However the present Lcchnology is not limited to Lhe above embodiments, and can be embodied by maki nq va r'\ OLIS moditi caLions to the above embodiments wi thout depart Lug from the scope of the technology, b L024o] The processing procedures described in the above desorihed embodiments may be regarded as a method involving a series of those procedures, or as a program Lor causing a oornpLiLer; to carry out the series Q[ those procedures, or as 3 a recording medium storing the program. This rocordinq medium may be a Compact Disc (CD), aKiniDisc [t£D) , a Oiqital 96 SP3530S3WO00 Vcrsat.i If? Disc (DVD) , a memory card, or a lilu-ray [reqistered trademark) D: so, for example- f024t.f The present: technology may also he. cmbod i ed in Lho b structures described below. (1) An i nformati onproctiisinq device Lhat receives d streaui from another in I ormatioti processing device through wire! ess commnn i.eation, the stroam being for outpuLLing image 1 0 inf urination, the information proccssinq device including: a wi reless communi cation unit that performs communionL ion wi th the another i nforma tion process: ng devi ix, Lhe cornrnunicat.i on bei tiq for exchanq i ng eapabili Ly lfi inf ofma t Lou about the LnformaLion process i ng dev i.ec and capab i lity in Torrtiati on abouL the another information proteasing device; and a control unit thai, performs control to set a power consumpti on mode i n the another i nforma Lion processi ng devi cc 20 based on the oapabili Ly infonnation about Lhe another informaLf on processing device■ (2) The information processing device of fl}# wherein the capability information abouL the another information 25 process i ng devi ce incl udos in format i on ind i cat inn; whether the a riot her in format: on processing device is a mobi I e devi ce, and the control unit performs control Lo set a low power consumption mode in Lhe anoLher information processing device 30 based on the capability information abouL the another Lnfornta V. i on processing device and management: i n formati on for SP3530a3WOOO [nana gi ng the another inf orinaLJon process? no; devi CP, (3) The intormation processing device of {?.) , where! n Lhe management. information is information for managing 5 idenL i fi cati on information for identifying Lhe antiLher inforKlaLi on processing device and the capability inf oriuaLion about Lhe anoLher information processing device, the i dentification information and Lhe i^ap^bi 1 f ty inf.ormat.i en bf?i ng connected to each. oLhec . 10 (4) The 1 u I or ma Li on processing device of (3) , wherein the managcmeriL information includes, as the capability informaLion cibouf the another i nformation processing device, at least information about radi o wave propagation measurement 15 related to commun t eaLt on wi f.h the another information processing device and infocinaLion abouL power eonsUTFipti on * (b) The i TI Forma Lion processing device of [3) or (4) , wherein the maitaqemeiiL information includes, as the 20 capability inf or/ma Lion about Lhe nnofher i n format f on processing devj ee, aL I east i nformation about an output format for displaying Lhe i wage i nf onnaf.i on , (CO The information processing device of (bJ, where i n 25 Lhe information about the output format is informaLien indicating] LhaL Lhe image information is of main display or of sub display, ^nd, when Lhe ouLpul". format is of the sub display, the control unit sets the low power ::oEiHiJiupf.i on mode in the another 30 information process i nq devi ce, 98 SP3b30tf3WO00 The information processing device of (6), wherein, when .switching between the main display and the sub display is performed, the another information processing device transmits information indicating timing of the switching to 5 the ini orrn.ition prooessi ng devi oe . (3) The information processing device of one of (J ) through {!] , wherein the control unit performs control to set a mode for the another information processing device to transmit the 10 stream while sleeping at predetermined intervals, the mode be i.nq set as the 1 ow power consumption mode, The i Til orma ti on prooesai nq devi oe of one of {1} i.hroijqh {8J, wherein the soLLing of a power consumption mode is if> performed with a predetermined RT'JP message defined in the Ki-Fi Display specifications. HO) The LnfovjnaL i on processi nq devi i;e of one of (1 ) L tirouqh f 9) , wherein Lhe wireless coEiirtiunicaL Lon. unit performs 20 exchange of the capability information through capability negotiation or capability re-iieyoL.i dL.i.on del J ned in Lhe Wi-Fi Di splay specifications. (ID The i nforiiiat.i on processing device of one of (1) through 25 [10), where i n Lhe eap^bi1i ty i nformati on i a exoh^nqeri in ^ RTSP M3 Message in capability neqot iat-ion or." eapabi L.i.Ly re-negotiation. (I?) The information processing device of one of [1) through 30 (11), wherein the wireless corumuri i eat i on urn I. is a wi rel ess coiwiuni oati on 90 I5P333083WOO0 unit that per. forms communication usifiq a f i rst frequency band, arid communication usinq a second frequency band, the second frequency band having a higher data transmission IMf.e than the first frequency band, and Lhe control unit seLs a first power consumption mode for the l.irst frequency band and a second power consumption mode for Lite second frequency band i ndependently of each other. (13) The iniofrlidti on processing device of one of: (1) through [12}, wherein, when the management informal;ion is chanqed, the control unit penforniw control to transmiL it command to the another inf orrcation pr.ooessi ng device, the command be.i.nq for tiotiJying the another information processing device of the change. The irtforirtaLi on processing device of (13), wherein the oonttol unit performs control to transmiL a RT3PM5 Message ad Lhe command to Lhe (mother inf ormation process E tiq device, the UTSPM5 Message containing wfd-triggered-method defined in the Wi-t'i CERTIFIED Miracast specifications. CJ5) An i nf ormation process i nq devi ce that receives a stream from arm Lhe r information processing device through wireless communicati on, the stream be i nq for outputting image f nformation, the information processing device performing control Ln set a power consumption mode in Lhe another information processing device based on an output fonntat of an output unit, the dutput unit output ting the image in forma Li on based on the stream. too SP3530(nWOOO (16) An i ri r.ormati rin processing device that transmits a stream to another information processing dovi.ee through wire left ft communication, the stream being for output Ling imago Fi inf orrna t f on, the information processing device includi ng: # wireless communi oat ion unit that performs communication w i th. the another i nformat i.on processing device, the communieaLion bei ng for e^changi rig capability 10 information about ("he information processing device and capability information about the another information processi Jig device; and a control unit that sots a power consumption, mode under the control of the another informati on processing device 1 b~ based on the capabili t:y information ^bout the information processing device. (IV) An inf orma t i.on processing method for rcceiv i ng a st ream from another in format, i uti processing dev i.eo through wi relcss 20 oomirEunicat.ion, the stream be i.ng for outputLing ima<;e information, the i nrormation processing method incIuding; a wireless oomiaunioa L i on step of performing communing 1. ion with the another information process i rig dev.i ce, 2b the cotiimunicat.i on beinq; Tor exchanging capabi 1 i. Ly i nformation about r.he information processing device and capability i nformaf i on about. i_ho another j n formati on processi r"[ device; and H control stop of performing control, to set a power 30 consumption mode 5 n the another information process i ng devi ce based on the capability i nformat: i on aboul. the another 101 information processing device. REFERENCE SIGNS LIST [0247} 5 100 Communieati on rtyste-M 101 TvifoofiaUi on Lr.aitsmission range 200 Infocreation processing device 201 Data transmission system 202 Line control system 10 210 Antenna 220 Wireless ooinmuni r^l. i on un.Ll 230 Control signal rscsi v i uq imi L 240 Control nnit 2'SO Tillage/sound signal generating unit 1 b 2&0 linage/sound compressing unit 270 Stream transmitting nnit 300 liifontiat". i on processing do vice 301 Trine; <:oid.ro t sys LOIR 30^ TnpuL/ouLput system 20 310 Antenna 320 Wireless communication unit 330 Stream reoef vi nq un i I ."340 Tmdqie./aoLnid decompressing unit 3b0 Tmaqe/sound output unit 2b 351 display unit 3E32 Sound output unit 360 User information aequi ri nq nni L 370 Control un i f. 3 B0 Contra I s i r^nal Lransmitting unit 30 390 MarittgeincriL information holding unit 400 Information processing deviee SP353083WOO0 102 700 Ctiminiiriicat".Lon system 900 Smartphone 901 Processor 902 Memory 5 903 storage 904 External connecti on interface 90ft Camera 907 Serisor 905 Microphone 10 909 Input device 910 Display device 911 Speaker 913 Wirt? Less communication Interface 91'I Antenna switch 15 915 Antenna 917 Bus 918 Battery 919 ftuxil Lary control Lor 920 car navi fjati on device 20 92 J Processor 922 Memory 924 GPS module 925 Sensor 92fr DaV.A interface 25 92/ CpuLeni: pirtyer 92ft Storage? medium interface 920 input device 9."30 Display device 931 Rpoaker 30 933 Wireless communication interface 934 Antenna switch 93S Antenna SriJJ Battery 941 In-v^h i CIG network: 942 Vehic I c-slde-. modul e. CLAIMS 1. An i nformation processing devi.ee receivi ng a stream from another information processing device through wireless communication, the stream being for outpulling image information, the information processing device comprising: a wireless communication unit configured to perform commun i eati on with the another information processing device, the communl.eati on being for exchanging capability information about the i n formati on process.! ng devi ce and capability in forma liott about the another informal.] on processing device; and a control unit configured lo perform control to set a power consumption mode in the another i nformati on processing device based on the capability information about the another informali on processing device. 2. The informal ton pr(it:Rtininq device according to claim 1, wherein the capability i ET ror^^l.i en about the another information processing device includes information indicate nq whether the another information processing device is a mobJ.le device, and the control un.it per-forn>s control to set a low power t'ciiHiirnpt ion mode in the another i n I cnn^l. i on prooeHsi ng devi oe based on the capability i n Torino I. ion about the another informs li on processing device and man^tgenient i ti forma li on for managing the another information processing device. 3- The information processing device according to claim 2, whftvei u tbe ittri*i.&geiaes\t inform Lion "is information Cor managing id era I- i Lication information f or identifying the another inf otitis Lion pryecssinq device and the capability i riformation about the another .i lErormahi on processing deviee, the IdentifiesU i.on into inflation ;tnd the capability i nformation bei rig conflicted tn each other. ■d. The information proteasing device according to claim 3, wherein the wanagenietit information i ncludes, as Lho capability information about the another in formati on processing dev ice, at Least i n format ion about radi o wave propagation measurement related to c:oifimunlegation with the another information processing device and into lima t ion abouL jiowci conaumpLiorL. 5- The information processing device accotdi.ng to claim 3, wherein the management inforntiatinn includes, a a the capability information about the another information processing device, at lea.^t information about an output torm;iL for displ aying the image Lnforma tion. 6. The information processing devioi* according to claim E>, wherei n llie information about the output format is irtforntat i on jndicaling that the image information is oC main display or cJ r sub display, and, when the output format is of the sub display, the control unit sets the low power consumption mode in the another information processing . An informs Lion processing device receiving a stream from another information processing device through wireless communionLion, Lhe stream being tor nutpuLLi"q image i nformation, the information processing device performing control to set n power consumption mode in the another informal i on process i nq deu i ce based on an output format or an output mi i 1., the outpuL UEIIL ouLputtinq the image information baseij on Lhe s Lreetm. 16. An inf orioati on proves sin cj dovi oc transmitting a abrp^m to another i nformaLion processing device Lhrovxjh wi T;olefia c.oKuau.n'i cation, the stream being tor outputtlng image Lnforma t". i on, t.lie inf onraitiori pro^esssi-n^ device comprising: a wirolfi^a communion Lion unit configured! to per Conn coimfluni cation with the another in Tor m^ Lion processing device, Lho oommunicat ion beting for eyi.:hangi ng ca pabi.l i.ty informs Lion about the in format ton ptoceaaing device and capability Informs Lion about Lbe another intormation pirocesshig devi ce; and a control unit configured Lo set a pdWcr consumption mode under: the (:ontro 1 of the anulhcr j 'i forma Lion processing device based on the capabi lity information about the information processing device* 17 . An intor.mat.ion processing method for rccei ving a stream f.rum another, information processing dew i ce through wireless coimiuinicati on, the stredin. bei ng for outputtinq imaqo infor-maLion, Lho d n forma L i on' process i.ng method comprising : a wi i cless cooimnriicat r on step of pertorrminq communication wi Lh th£ another inf nrmat-i on process i ng device, Lho communication being for exchanging] capabili Ly information about the information processing device and capabili ty information about th(^ another informal ion process i rig dev i ce; and a control step of performing control to set a power const imp t ion mode in I.he another i nf oritia E. ion processing device based on the capability information about the another inffirmat-ioii p^or.ftssiny tlftvic^*