1. A recording medium (20), characterized in that identification data for specifying contents data and metadata for modifying the contents data are recorded in correspondence to each other.

2. A recording medium (20) as claimed in claim 1, wherein contents data specified by the identification data are also recorded.

3. A recording medium (20) as claimed in claim 2, wherein the identification data and the metadata are recorded to a recording region different from the contents data.

4. A recording medium (20) as claimed in claim 1, wherein the contents data are at least one data of a video, a music, a photograph, and a game.

5. A recording medium (20) as claimed in claim 1, wherein a plurality of kinds of the metadata are recorded.

6. A recording medium (20) as claimed in claim 1, wherein the recording medium is an optical disc, a hard disc, or a semiconductor memory.

7. A data output apparatus (30) comprising: read-out means for reading out predetermined contents data from a recording medium or through a network; fetch means for specifying the read-out contents data and fetching metadata related to the contents data for modifying the contents data from the recording medium or other recording medium or through a network; and output means for outputting the contents data read out by the read-out means and the metadata fetched by the fetch means together.

8. A data output method comprising: a read-out step for reading out predetermined contents data; a fetch step for fetching metadata for modifying the contents data; and an output step for outputting the contents data read out at the read-out step and the metadata fetched at the fetch step together.

9. A data delivery/distribution system, wherein information for specifying predetermined contents data and metadata for modifying the contents data are delivered or distributed together.

10. A data delivery/distribution system as claimed in claim 9, wherein the metadata is data of a difference.

11. A data delivery/distribution system as claimed in claim 9, wherein the metadata is data for providing at least one modification of a modification of gradation, a modification of a color tone, a modification of a time axis, a modification of a frequency, a modification of a volume, a modification of a tempo, and a shift of a pitch.

12. A data delivery/distribution system as claimed in claim 9, wherein the metadata is delivered or distributed through broadcasting, the Internet, a mobile phone, or a recording medium.

13. A recording apparatus, characterized in that the recording apparatus records identification data for specifying contents data and metadata for modifying the contents data in correspondence to each other.

14. A recording method, characterized in that the recording method records identification data for specifying contents data and metadata for modifying the contents data in correspondence to each other.

The present invention relates to recording medium, data output apparatus and method thereof.
Technical Field
The present invention relates to a recording medium, a recording apparatus, a recording method, a data output apparatus, a data output method, and data delivery/ distribution system of contents data. Background Art
As digital AV (Audio and Visual) equipment has become widespread, commercial contents (contents to be released, professional contents} such as musics, videos, and the like are released and as CDs (Compact Discs) and DVDs. Further, various types of contents are released and distributed through networks Further, as ADSL (Asymmetric Digital Subscriber Line), FTTH (Fiber To The Home), and the like have become wide spread, a P2P (Peer to Peer) system making use of the Internet is actually employed.
Note that there are, for example, Japanese Unexamined Patent Application Publication Nos. 2002-2367G8 and 2003-114949 as prior art documents.
However, even if a user, who buys, for example, a music
CD or gets it through electronic distribut-ion, wante to
enjoy it by subjecting the original music contents of thG CD
to equalising and the like to modify the sound quality of
the contents tor personal use, since it is difficult to
moc-ity the melody and the like of the contents individually,
a user who can carry out such modification is limited only
to a maniac user and an ordinary user cannot easily enjoy
the contents in such a manners Further, copy right must be
also taken into consideration,
The present invention intends to solve the above
problem.
Disclosure of the Invention
In the present invention, there is provided a recording
medium which is characterized in that identification data
for specifying contents data and metadata for modifying the
contents data are recorded .in correspondence to each other.
Further, in the present invention, there is provided a
data delivery/distribution system, wherein information for
specifying predetermined contents data and metadata for the
contents data are delivered or distributed together.
According to the present invention, materials
themselves [contents data) such as musics, videos, and the
like ceiii be enjoyed as well as a result of arrangement to
the mattrials can be si20 enjoyed. Further, when
information that provides the result of arrangement is
to friends and the liker they can also en^oy the
result of the arrangement. QLherwice, it is also possible
to prepare a server and. to distribute information for
providing the result of arrangement through, a portal service
and to delivery it through P2P, thereby the materials can be
variously enjoyed because users actively get engaged with
Moreover, the information for providing the result of
arrangement has a meaning only when a user making use of iL
prepares a material, which makes a great advancement in topy
right as well as can contribute to turnover,
Brief Description of the Drawing
t'ig , 1 is a view showing an example a recording modes in
the present invention.
Fig, 2 is a view showing an example a data format in
the present invention-
Fig. 3 is a view showing other example the recording
mode in the present invention.
Fig. 4 is a system view showing an example a recording
apparatus according to the present invention.
Fig. 5 is a system view showing an example a replay
apparatus according to the present invention.
Fig. 6 is a system view showing other example of the
recording apparatus according to the present invention.
Fig. 7 is a system view showing other example the
recording apparatus according to the present invention.
fig, S is a system view showing other example the
replay apparatus according to the present invention.
Fig. 9 is a flowchart showing an example a replay
procedure in the present invention.
Fig. 10 is a system view showing an example of a. server
system according to the present invention.
Fig. 11 is a flowchart showing other example of the
replay procedure in the present invention.
Fig. 12 is a system view showing other example of the
server system according to the present invention.
Fig, 13 is a view showing other example the data format
in the present invention.
Best Mode for Carrying Out the Invention
fl] Recorded Contents in Recording Medium
Fig, 1 shows an example of recorded contents and a
recording mode when a CD is used ss a recording medium and
musical compositions are recorded to the CD as contents data.
That is, in the example shown in Fig. I, a CD 10 is
arranged in CD Extra mode, and the digital audio data
{uncompressed digital audio data) of a plurality of musical
compositions 1 - u are recoded to a first session of the CD
10 a.s tracks 1 - N. Tn this case, the digital audio data in
the tracks 1 - H are recorded in a format similar to that of
musical compositions in an ordinary CD-DA ICLI Digital Audio).
Further, N sets of metadata META_l to HETA_N and N gets
of tag data. TAG_1 to T7i.G_N are recorded to a second session
of tlie CD 10, In this case, metadata Mi ig data for
providing a corrasponding musical composition (track) i with
a variation, {for arranging it}, and, when, for example, a
backing is added to the* musical composition i by A guitar,
the metadata Mi is data for creating digital audio data for
the backing by the guitar.
Accordingly, the metadata Mi may be digital audio data
of a difference between the digital audio data of the
musical composition i and digital audio data as a result of
arrangement of the musical composition. Further, ths
metadata Mi may be data for providing the time-axis, the
frequency-axis or the level Q! the musical composition i
with a variation, that is, d^ca for modifying tempo, pitch,
volume, and the like. Furthermore, it may be the
arrangement information of the musical composition i, that
IB, time information showing the beginning of each battuta,
chore! information of each battuta, and the like. Then, the
metadata Mi includes synchronous dsta so as to be in
synchronism with the musical composition i or address data
showing corresponding positions of the musical composition.
Further, tag data TAG _1 to TAG_tt are information for
causing each of the tracks (musical compositions) 1 - N
recorded to the first session, to correspond to each of the
metadata MUTA_1 to META_N or for relating them to each other.
That is, the tag data TAG_1 to TAG H are information tor
specifying which ot the meLadata META_1 t 10 explained in
item []], Further, since the plurality of metadata
META_il - MRTA_i_l arc prepared to the one musical
composition i at the time, it is passible to listen the
musical composition i by a different arrangement. Further,
according to the CD-R 11, ib is possible to listen to the
musical composition i without arranging It,
[3] Replay Apparatus and Replay Method
Fig. 5 shows an example of A replay apparatus
corresponding to the recording apparatus 20 of the item [2] .
That is, in replay apparatus 30, the CD-R 11 ia rotated by a
spindle motor 41 at a predetermined speed, and the EFM
signal is replayed from the CD-R 11 by an optical head 31
and fetched through A replay amplifier 32.
Then, the feLched KFM signal is supplied to a servo
circuit 42, and a servo output therefrom is supplied to the
spindle motor 41. As a result, the CD-R 11 is controlled to
a predetermined revolution speed as well as another servo
output is supplied to the optical nead 31, thereby thread
servo, tracking servo, and focus servo are carried out to
the CD-R 11. Note thatH at the time, a system control
circuit 43 ia composed of a microcomputer to control replay
of the CD-R 11. For example, when, for example, an
operation button 44 is depressed, a target track is selected
Erom the tracks (musical compositions) of the CD-P 11.
Then, ordinary replay or replay added with the backing
is carried out as described below.
[3-1] Ordinary Replay
In this case, the EFM signal feLched from the replay
amplifier 22 is supplied to an EFM decode circuit 33 and the
original encode signal is decoded, and then the encode
signal is supplied, to an error correction Decoder circuit. 34
and the original digital audio data is decoded. Then, the
decoded digital audio data is supplied to a n/A(Digital to
Analog) converter circuit 36 through a synthesizatic-n
circuit 35 to he described later and converted into analog
audio signals L, R, arid the signals L, R are fetched from an
output terminal 37.
Accordingly, Lhe musical composition i recorded to the
first session of the CD-K. 1] can be ordinarily replayed.
[3-2] Replay Provided with Backing {Arranged Replay) In
th:3 case, the metadata META_ij and the tag data TAG_i of a
target musical composition, i are replayed out of the
metadata and the Lag data recorded to the second session and
fetched from Lhe decoder circuit 34, and the fetched
metadata MtlTA_i j and the tag data TAG_i are supplied to &
butter circuit 38 and accumulated therein temporarily.
Subsequently, the digital audio data of the target
musical composition i is fetched from the decoder circuit 34
likewise the it_em [3 1J and supplied to the synthesization
circuit 3b, At the time, the metadata METij accumulated in
the buffer circuit Ii8 is fetched in synchronism with, the
digital audio data, of the musical composition i fetched from
the decoder circuit 34, fJote that, they are fetched in
synchronism with each other usinq the tag data TAG i.
Then, the metadata METij fetched from the buffer
circuit 3S is supplied to a creation circuit 39. The
creation circuit 39 is composed of, for example, a DSP
(Digital Signal Processor) and creates the digital audio
data of the backing of the musical composition i from the
metadata. METij (j=l-3) supplied thereto. When, for example,
metadata META_il IE a data for providing the musical
composition i with the backing made by the guitar, the
digital audio data of the backing made by the guitar is
created.
Note that, at the time, when the operation button 44 is
depressed, the creation circuit 39 is controlled by the
system control circuit 43 20 that the metadata META_ij is
selected, and the digital audio data of the backing shown by
the selected metadata is created.
Further, when the metadata selected from the metadata
META_ij includes data designating not to modify a tempo,
data showing the tempo is supplied to the system control
circuit 4J, AS a result, the servo circuit 42 is controlled
by the control circuit 43, thereby the revolution speed of
the CD-R 11 is modified and thus the speed (tempo) of the
digital audio data replayed from the CD-R 11 is modified.
Then, the digital audio data of the backing created by
the creation circuit 39 is supplied to the synthesization
circuit 35 and synthesized with the digital audio data of
the original musical composition i. Note that, when the
speed (tempo) of the digital audio data replayed from the
CD-R 11 is modified ai_ the time as described above, since
the interval of the musical composition i modified, it is
corrected to an original interval by the synthesization
circuit 35. It is needless to say that the modified
interval can be returned to the original interval and can be
increased or decreased as a result of arrangement.
As described above, the digital audio data of Lhe
musical composition i arranged according t_o the metadata
META_ij is fetched from the synthesization circuit 35, and
the analog audio signal k, K thereof are fetched from the
output terminal 37.
Therefore, according to the replay apparatus 30, when
the CD 10 explained in the item [1J or the CD-R 11 is
replayed, it can be replayed together with the backing.
Further, when the plurality of metadata META_il - META_i3
arc prepared to the one musical composition i at the time,
it is also possible to listen to the same musical
composition i with a different arrangement.
Note that although one metadata is selected from the
plurality of metadata META ij in the embodiment described
above, the present invention is not limited thereto and a
plurality of metadata may be arranged in combination. Tt is
possible, as an arrangement, to, for example, add a backing
of the rhythm of bossa nova by META il using the guitar, to
increase a replay tempo 10% by META .12, and to increase the
interval of the musical composition three degrees as
compared with the original interval by META_i3.
[4] Recording Apparatus arid Recording Method (2)
FJg, 6 shows other example of the recording apparatus
20, in which one of the three metadata META_il - META__i3 is
recorded Lo a CD-R 12.
That is, the digital audio data of the musical
composition i is supplied to an input buffer circuit 22
through an input terminal 21A and accumulated therein
temporarily. Further, the metadata META_il - META_i3 of the
musical composition i is supplied to a selector circuit 26
through input terminals 21H1 21M3, one of the metadata is
selected in response to an instruction of a user, and the
selected metadata is supplied to the input buffer circuit 22
Further, the tag data TAG_i of the musical composition i is
supplied to the Input buffer circuit 22 through an input
terminal 2IT.
Thereafter, the digital audio data, the metadata
META_ij, and the tag data TAG_i of the musical composition i
are recorded to the CD-R 12 in the CD ExLra mode likewise
Lhe iLem [2].
Accordingly, when several kinds of arrangements are
made in the recording apparatus 20, iL is possible to
specify a most favorite arrangement in these arrangements,
to select the metadata META_ij theieol, and to add it to the
original musical composition i.
Note that it is also possible to carry out replay by
the replay apparatus 30 shown in t'ig. 5 also in the
recording apparatus 20 as well as to carry out the relay to
which the backing is added,
[5] Recording Apparatus and Recording Method (3)
Fig. 7 shows other example o± the recording apparatus
20, wherein the metadata META_il - META_i3 and the Lag data
TAG_i are multiplexed to the digital audio data of the
musical composition i and recorded to a. CD-R 13 in a CD-ROM
mode.
Accordingly, in the recording apparatus 20, the digital
audio data of the musical composition i is supplied to a
multiplex circuit 27 through an input terminal 21A. Further,
the metadata META_il - META_i3 are supplied to the multiplex
circuiL 27 through input terminals 21M1 - 21M3 as well as
the tag data TAG i ia supplied to the multiplex circuit 27
through an input terminals 21T. As described above, the
digital audio data, the metadata META_ij, and Lhe Lag data

TAG_i or the musical composition i arc multiplexed in the
multiplex circuit 27.
Thereafter, the multiplexed signal of them is recorded
to the CD-R 13 in the CD-ROM mode after it ie subjected to
error correction encode processing and modulation processing
likewise the item [2].
Accordingly, it is possible to carry out replay by the
replay apparatus 30 described next also in. Lhe recording
apparatus 20, Further, in this case, it is possible to
carry out replay to which the backing is added.
[6] Keplay Apparatus and Replay Method (2)
b'.ig. 8 chows an example of a replay apparatus
corresponding to Lhe recording apparatus 20 of the item [b],
and Fig. 9 is a flowchart showing a flow of processing in
replay. That is, when a replay butten of actuation buttons
44 is depressed in the replay apparatus 30 at the time
actuation of the replay button is waited (step 101}, an EFM
signal is replayed from the CD-R 13 likewise the item [3]
[step 102).
The KFM signal is supplied to & demodulation circuit 33
through a replay amplifier 32 and an original encode signal,
is decoded (step 103) and supplied to an error correction
decoder circuit 34, thereby an original multiplexed signal
its decoded (step 104).
Then, the decoded multiplexed signal is supplied to a
separation circuit 45, the digital audio data, the metadata
MUTA_ij, and the tag data TAG_i of the musical composition i
are separated from each other {step IDS), and the separated
digital audio data is supplied to a synLhesizdLioii circuit
3b.
Further, an arbitrary metadata META_ij is selected from
the metadata META_ij separated in the separation circuit 45
(step 111), the selected metadata META_ij and the tag data
TAG_i are supplied to a creation, circuit 39, and the digital
audio data of the backing of the musical composition i is
created (step 112) and supplied to the synthesisation
circuit Jb,
Then, the syntheaization circuit 35 synthesizes the
digital audio data of the backing created by the creation
circuit 39 with the digital audio data of Lhe original
musical composition i supplied from the separation circuit
45 (step 113). Note that the tag data TAG_i is used Lo
synchronize the synthesization. Further, when the speed
(tempo) of the digital audio data replayed from the CD-R 13
is modified at the time as described above, since the
interval of the musical composition i modified, it is
corrected to the original interval by the synthesization
circuit '35. The modified interval can be made to the
or iginal i nterval and can be increased or decrcased as a
result of arrangement also in this example.
As described above, the digital audio data of the
musical composition i, which is arranged according to the
metadata META_ij, is fetched from the synthesization circuit
35 and supplied to a D/A converter circuit 36 so that it is
converted into analog audio signals L, R (step 114), and the
audio signals L, R are fetched from the output terminal 37-
Therefore, according to the replay apparatus 30, when
the CD-R 13 explained in the item [5] is replayed, it can be
replayed together with the backing-
Mote that a plurality ot metadata may be arranged in
combination also in the example in addition to that one
metadata is selected from the plurality of metadata META_ij,
[7] DaLaba.se Server
Fig. 10 shows an example when a database server 60 is
used. That is, in the example, the musical composition i is
replayed from An ordinary CD 14 as well as the metadata
MUTA_i and the tag data TAG_i ot the musical composition i
are accommodated to the database server 60 and used through
a network.
For this purpose, a dedicated CD player 50 is prepared
to replay the CD 14, The CD player•50 has a signal system
arranged as shown in, for example, Fig, 5 as well as has a
hard disc device 51 and a communication function. The CD
player 50 is connected to the database server 60 through the
network, for example, the Internet 70. Note that, the CD 1-1
is an ordinary CD-DA.
Further, a database Gl is prepared Lo the database
server 60 r and. the metadata META_l - META_U arid tag data
TAG i TAG N of the musical compositions i - w are
accumulated to the database 61.
First, the CD 14 is set to the player 50 according to
an operation/processing procedure shown inH for example, Fig.
11 [step 202), and a title is selected {step 203). Thus,
the data ot a CD number and a track number are retched from
the CD 14 and transmitied to the aerver 60 through the
Internet 70, thereby the server SO is requested to return
the metadata MKTA_i and the. tag data TAG_i of a
corresponding musical composition i (step 204),
As a result, the server SO fetches the corresponding
metadata META_i and tag data TAG_i from the database 61 and
transmits them to the CD player 50 through the Internet 70.
Nott? that, in this case, when the musical composition i has
a plurality of metadata META_i, all of the metadata META_i
or only the metadata designated by a user can be downloaded.
Then, the CD player 5G receives the metadata META_i and
the tag data TAG_i transmitted thereto [step 205), and they
are stored to the hard disc device 51 temporarily [step 206).
Subsequently, the digital audio data of the title selected
at step 203 is replayed Iroin the CD 14 and supplied to the
synthesisatioii circuit 35 as well as the metadata ME'l'A_i and
the tag data TAG_i stored in the hard disc device ^i are
supplied to the creation circuit 39 (Fig. 5), the digital
audio data of a backing of the musical composition i is
created [step 211), and the created digital audio data ot
the backing IB supplied to the eynthesization circuit 35.
The synthesization circuit 35 synthesizes t_he digital
audio data of the backing created by the creation circuit 33
with the digital audio daLa of the original musical
composition (title) i supplied thereto {step 312). Hote
that the tag data T&G_i is used to synchronize the
synthesjnation.
As described above, the digital audio data or the
musical composition i, which is arranged according to the
metadata META_i, is fetched from the synthesisation circuit
35 and supplied to the D/A converter circuit 36, in which
the digital audio data is converted into analog audio
signals Lr R through digital to analog conversion {step 213),
and the audio signals L, R are fetched from the output
terminal 31/.
Therefore, according to the CD player 50, when the
ordinary CD 14 is replayed, it can be replayed, together with
the backing.
Note that, the data of the musical composition ae a
material ig obtained by replaying the CD 14 in the example
according to Fige, 10, 11, the present invention can be also
even to a case in which the data, of the material is
through the network as in a service for
electronically distributing musics! compositions,
[SJ Metadata Exchange System
Fig. 12 shows a ca.se in which the metadata. META_i ^an
be exchanged between a plurality of users. That is, CD
players 5QA - BOM arranged likewise the CD player 50 of Fig,
10 are connected to Lhe Internet 70 as well as a server 60
is provided by, for example, a label firrn arid connected to
the Internet 70. in this case, the label firm provides
various Lypes of the metadata. META_i and the tag data TAG__i
of the CDs released by it.
Accordingly, users can be distributed w:i tli default
metadata META_i from the server 6G of the label firm through
the Internet 70 as well as can exchange the metadata META_i
with other users by P2p through the Internet 70. Otherwise,
the users can exchange the metadata META_i through a
recording medium such as a memory card.
Further, the label firm can he actively involved with
musical compositions, that is, contents by analyzing
required metadata META_i.
19J Arrangement of video/Image Data
Although a target- of arrangement is; a imisica.1
composition in the above description, the target of
arrangement mciy be set to video/image data of motion
pictures, TV broadcastings, games, and the like.
Fig. 13 chows an example of a format of metadata META_i
and Lag data TAG_i when a video accommodated in a DVD is
arranged. Tag data TAG__i includes data such as a DVD number,
d label firm, an album name, a title name, a contents TD
{TDGntiticatioji) , and the like likewise the case in which
musical composition.*; are accommodated to a CD also in this
case.
Then, the tag data TAG_i is followed by the metadata
MfilTA i. The arrangement for a character animation such as
an actually recorded image/video, CG {Computer Graphics),
and the like, which is carried out by the metadata. META i,
includes filter processing such as color tone correction,
edge enhancement, addition of noise and the like,
modification and processing-of gradation to a part or the
entirety of a screen or to a specific target, modification
of A display region carried out by zooming and panning,
superimposing of characLers and figures, extraction and
addition of a scene, synches!nation with other video and
image, modification of a replay specification, and the like
in particular, in the character animation, it is possible to
modify the curve of the animation (a value corresponding to
a key trame), which acts on a special position, a shape, and
material quality, modification of a texture to be applied in
addition to the above mentioned. Further, in three-
dimensional CG, it is also possible to modify the parameter
of a light source and to add £og.
In the arrangement to these images, it is contemplated
that the replay tempo of a musical composition corresponds
to the replay speed of images, the pj tch of Lhe musical
composition corresponding to the color and the shape of the
images, thd melody of the musical composition corresponding
to the color tone of the images, and the sounds of various
musical instruments correspond to the shapes and the colors
of CG characters and. the images, respectively in comparison
with the arrangement of the music contents described above.
Therefore, according to the metadata META_i and the tag
data TAG_i, a corresponding video/image data can be arranged
tlO] Conclusion
According to the system described above, not only
materials Kuch as musics, videos, and the like themselves
can be enjoyed but also a result of arrangement of the
materials carried out using various types of additional data
prepared by users cein be also enjoyed, thereby musics and
videos can be appreciated in various states.
Further, when information, which provides the result of
arrangement, is furnished to friends and the like, they can
also enjoy the result of the arrangement when they have the
contents of the same music and video. Otherwise, it is also
possible to store the information that provides the result
of arrangement to a server arid to distribute it throng Vi a
distribution service, P2P, *uid a recording medium s\it;h as a
memory card, thereby the information can be variously
enjoyed b&cause uasra can be. actively involved with the
materials.
Moreover, the information that provider the result of
the arrangement has a meaning only when a user making use of
It prepares a material (contents data) for using it, which
makes a great advancement in copy right a.g well as can
contribute to turnover,
[11] Others
Although it is assumed in the above description that
uncompressed digital audio data are recorded to ttie CD 10 or
the CD-Rs 11 - 13 as the contents data, digital audio data,
which, are obtained as a result of compression of the
uncompressed the digital audio data by a MP3 (MPEG (Motion
Picture Experts Group)-I/Audio Layer 3) aystem and. the like,
may be recorded. Further, the material or the contents data
as the target is not limited to the musical composition
{sound]r and, it may be contents such ae an image
[photograph, CG}, a video image (video, animation), a game
and the like, and a character and a voice can be converted
in the game.
The cont&nts may be identified from, for example,
several seconds of digital data and the like at the leading
of the contents in place of identifying them by the tag
. An optical disc, a hard disc, a semiconductor memory,
a network:, and the like may be used ae the medium of the
contents, the metadata, and the tag data. Further, in the
CD, the metadata and the tag data may be included in fringe
information-
Further, in the item [7] and the like, it may be
charged to download the metadata HETA_i and the tag data
TAG 1 of the musical composition i. As a method of the
charge, a charge may be made each, time a set of the metadata
MRTA__i and the tag data TAG i ia downloaded or a fee may be
varied according to the number of the metadata META_i and
the tag data TAG_i. Further, a monthly flat-rate fee may be
charged as a service fee.
Further, in the case described above, although the
metadata MET&_i and the tag. data TAG_i are distributed
through a disc to which the contents data are recorded or
through the network, they may be exchanged or distributed
through broadcasting, a CATV (CAble Television), a mobile
phone, and a recording medium. Since the
exchange/distribution of the metadata provides a method of
actively enjoying musics and pictures, the method may become
widely used explosively.
At Lhe time, there ia a possibility that a kind of
communities is created. Then; is a possibility, for example.

that communities a.re created according to applications and
categories such, as a jcisz community, a classic community, a
tempo community, an arrangement community, a parody (lyrics
community, a drama community, a sportc program tiommunity, a
community, a game character community, and the

WE CLAIM:
1. A recording medium (20), characterized in that identification data for specifying contents data and metadata for modifying the contents data are recorded in correspondence to each other.
2. A recording medium (20) as claimed in claim 1, wherein contents data specified by the identification data are also recorded.
3. A recording medium (20) as claimed in claim 2, wherein the identification data and the metadata are recorded to a recording region different from the contents data.
4. A recording medium (20) as claimed in claim 1, wherein the contents data are at least one data of a video, a music, a photograph, and a game.
5. A recording medium (20) as claimed in claim 1, wherein a plurality of kinds of the metadata are recorded.
6. A recording medium (20) as claimed in claim 1, wherein the recording medium is an optical disc, a hard disc, or a semiconductor memory.
7. A data output apparatus (30) comprising:
read-out means for reading out predetermined contents data from a recording medium or
through a network;
fetch means for specifying the read-out contents data and fetching metadata related to the
contents data for modifying the contents data from the recording medium or other
recording medium or through a network; and
output means for outputting the contents data read out by the read-out means and the
metadata fetched by the fetch means together.

8. A data output method comprising:
a read-out step for reading out predetermined contents data;
a fetch step for fetching metadata for modifying the contents data; and
an output step for outputting the contents data read out at the read-out step and the
metadata fetched at the fetch step together.
9. A data delivery/distribution system, wherein information for specifying predetermined contents data and metadata for modifying the contents data are delivered or distributed together.
10. A data delivery/distribution system as claimed in claim 9, wherein the metadata is data of a difference.
11. A data delivery/distribution system as claimed in claim 9, wherein the metadata is data for providing at least one modification of a modification of gradation, a modification of a color tone, a modification of a time axis, a modification of a frequency, a modification of a volume, a modification of a tempo, and a shift of a pitch.
12. A data delivery/distribution system as claimed in claim 9, wherein the metadata is delivered or distributed through broadcasting, the Internet, a mobile phone, or a recording medium.
13. A recording apparatus, characterized in that the recording apparatus records identification data for specifying contents data and metadata for modifying the contents data in correspondence to each other.
14. A recording method, characterized in that the recording method records identification data for specifying contents data and metadata for modifying the contents data in correspondence to each other.