Claims:CLAIMS
I/We Claim:
1. An emergency assistance system (100) comprising:
an emergency device (108) installed at a wheelchair (102), wherein the emergency device (108) comprises:
a first input unit (110) to receive a first input from a wheelchair user, such that the first input is an event of generating an alert;
a second input unit (112) to receive a second input from the wheelchair user, such that the second input is an event of sharing a location of the wheelchair user;
a tracking unit (116) to track a location of the wheelchair user; and
a processing unit (120) connected to the first input unit (110) and the second input unit (112), wherein the processing unit (120) is configured to:
receive the first input and/or the second input from the first input unit (110) and/or the second input unit (112) respectively;
fetch the event corresponds to the first input and/or the second input from a number of events stored in a database (122), based on the received first input and/or the second input;
activate a buzzer (114) to generate a sound to notify nearby users, upon fetching the event corresponds to the first input; and
share the tracked location of the wheelchair user to pre-defined contacts through a safety application (124) installed within a user computing device (104), upon fetching the event corresponds to the second input.
2. The emergency assistance system (100) as claimed in claim 1, wherein the emergency device (108) is an adjustable emergency device installed over any type of the wheelchair.
3. The emergency assistance system (100) as claimed in claim 1, wherein the first input unit (110) is a panic button.
4. The emergency assistance system (100) as claimed in claim 1, wherein the second input unit (112) is a location sharing button.
5. The emergency assistance system (100) as claimed in claim 1, wherein the user computing device (104) is adapted to provide an interface to the emergency device (108).
6. The emergency assistance system (100) as claimed in claim 1, wherein the emergency device (108) further comprising a battery (118) to supply a pre-defined amount of energy to the emergency device (108).
7. The emergency assistance system (100) as claimed in claim 1, further comprising a database (122) to store the tracked location of the wheelchair user.
8. The emergency assistance system (100) as claimed in claim 1, wherein the emergency device (108) comprises a position sensor (502) to detect a position of the wheelchair (102).
9. The emergency assistance system (100) as claimed in claim 1, wherein the emergency device (108) further comprising a Force Sensitive Resistor (FSR) sensor (504) to detect a gesture of the wheelchair user.
10. A method for assisting a wheelchair user in emergency situations by an emergency assistance system (100), wherein the method comprising steps of:
receiving a first input and/or a second input from a first input unit (110) and/or a second input unit (112) respectively;
fetching an event corresponds to the first input and/or the second input from a number of events stored in a database (122);
activating a buzzer (114) to generate a sound to alert nearby users, upon fetching the event corresponds to the first input; and
sharing a tracked location of the wheelchair user to pre-defined contacts using a safety application (124) installed within a user computing device (104), upon fetching the event corresponds to the second input.

Date: May 23, 2021
Place: Noida

Dr. Keerti Gupta
Agent for the Applicant
(IN/PA-1529)
, Description:FORM 2

THE PATENT ACT 1970
(39 of 1970)
&

THE PATENTS RULES, 2003

COMPLETE SPECIFICATION
(See Section 10, and rule 13)

EMERGENCY ASSISTANCE SYSTEM AND METHOD THEREOF

APPLICANT(S)
NAME: CHITKARA INNOVATION INCUBATOR FOUNDATION
NATIONALITY: INDIAN
ADDRESS: SCO: 160-161, SECTOR – 9C, MADHYA MARG, CHANDIGARH – 160009, INDIA

The following specification particularly describes the invention and the manner in which it is to be performed
BACKGROUND
Field of Invention
[001] Embodiments of the present invention generally relate to an assisting system and particularly to an emergency assistance system and method thereof.
Description of Related Art
[002] Large population is suffering from a physical disability due to various reasons such as, a health, an age, accidents, and so forth. Most of them need to use wheelchairs as a means of transport to enhance their personal disability, which further enables wheelchair users to be independent for participating in family and community life. In spite of the wheelchair, the wheelchair users may sometimes feel helpless and need someone to ensure their security and safety. As an example, a wheelchair user may find themselves in a falling victim situation and if nobody is around the wheelchair, then this situation may cause serious injuries to the wheelchair user. To overcome the aforementioned issues, various systems have been disclosed in prior arts for providing an emergency assistance to the wheelchair users.
[003] Conventionally, the system is provided with a device that is embedded with a panic button to be pressed by the wheelchair user, in case the wheelchair user needs a help from nearby users. However, such device is a standalone device that is not specifically manufactured for the wheelchairs. Moreover, the device is unable to provide a user-friendly service so that everyone can use the device. In another conventional system, a location sharing device is provided that is attached to the wheelchair. However, such type of wheelchair involves a higher cost that that is not affordable for everyone.
[004] There is thus a need for an advanced and more effective emergency assistance system that can administer the drawbacks faced by conventional emergency assistance systems.
SUMMARY
[005] Embodiments in accordance with the present invention provide an emergency assistance system comprising: an emergency device installed at a wheelchair. The emergency device comprises: a first input unit to receive a first input from a wheelchair user, such that the first input is an event of generating an alert. The emergency device further comprises: a second input unit to receive a second input from the wheelchair user, such that the second input is an event of sharing a location of the wheelchair user. The emergency device further comprises: a tracking unit to track a location of the wheelchair user. The emergency device further comprises: a processing unit connected to the first input unit and the second input unit. The processing unit is configured to: receive the first input and/or the second input from the first input unit and/or the second input unit respectively; fetch the event corresponds to the first input and/or the second input from a number of events stored in a database based on the received first input and/or the second input; activate a buzzer to generate a sound to notify nearby users, upon fetching the event corresponds to the first input; and share the tracked location of the wheelchair user to pre-defined contacts through a safety application installed within a user computing device, upon fetching the event corresponds to the second input.
[006] Embodiments in accordance with the present invention provide a method for assisting a wheelchair user in emergency situations by an emergency assistance system, wherein the method comprising steps of: receiving a first input and/or a second input from a first input unit and/or a second input unit respectively; fetching an event corresponds to the first input and/or the second input from a number of events stored in a database; activating a buzzer to generate a sound to alert nearby users, upon fetching the event corresponds to the first input; and sharing a tracked location of the wheelchair user to pre-defined contacts using a safety application installed within a user computing device, upon fetching the event corresponds to the second input.
[007] Embodiments of the present invention may provide a number of advantages depending on its particular configuration. First, embodiments of the present application provide an emergency assistance system that provides an emergency device attached to a wheelchair, to ensure a safety and a security of wheelchair users.
[008] Next, embodiments of the present invention provide a wheelchair integrated emergency device that is having an eye gesture and a hand gesture functionality which is useful for wheelchair users suffering from both motor disability and vision disability.
[009] Next, embodiments of the present invention provide an emergency assistance system that is helpful for Non-Governmental Organizations (NGO) to track a location of a wheelchair user anytime to ensure a security of the wheelchair user.
[0010] Next, embodiments of the present invention provide an emergency assistance system that comprises an emergency device provided with a panic button to enable a wheelchair user to press the panic button, in case of an emergency situation, thereby decreases a risk of robberies.
[0011] These and other advantages will be apparent from the present application of the embodiments described herein.
[0012] The preceding is a simplified summary to provide an understanding of some embodiments of the present invention. This summary is neither an extensive nor exhaustive overview of the present invention and its various embodiments. The summary presents selected concepts of the embodiments of the present invention in a simplified form as an introduction to the more detailed description presented below. As will be appreciated, other embodiments of the present invention are possible utilizing, alone or in combination, one or more of the features set forth above or described in detail below.
BRIEF DESCRIPTION OF THE DRAWINGS
[0013] The above and still further features and advantages of embodiments of the present invention will become apparent upon consideration of the following detailed description of embodiments thereof, especially when taken in conjunction with the accompanying drawings, and wherein:
[0014] FIG. 1 illustrates an emergency assistance system, according to an embodiment of the present invention;
[0015] FIG. 2 illustrates the components of a processing unit of an emergency device of the emergency assistance system, according to an embodiment of the present invention;
[0016] FIG. 3 illustrates a diagrammatic view of the emergency device of the emergency assistance system, according to an embodiment of the present invention;
[0017] FIG. 4 illustrates a diagrammatic view of steps involved in sending a location of a wheelchair user by the emergency assistance system, according to an embodiment of the present invention;
[0018] FIG. 5 illustrates a diagrammatic view of the emergency assistance system detecting a fall event, according to an embodiment of the present invention;
[0019] FIG. 6 depicts a flowchart of a method of assisting the wheelchair user in emergency situations by the emergency assistance system, according to an embodiment of the present invention; and
[0020] FIG. 7 illustrates a flow chart of a method of detecting a fall event of the wheelchair user by the emergency assistance system, according to an embodiment of the present invention.
[0021] The headings used herein are for organizational purposes only and are not meant to be used to limit the scope of the description or the claims. As used throughout this application, the word "may" is used in a permissive sense (i.e., meaning having the potential to), rather than the mandatory sense (i.e., meaning must). Similarly, the words “include”, “including”, and “includes” mean including but not limited to. To facilitate understanding, like reference numerals have been used, where possible, to designate like elements common to the figures. Optional portions of the figures may be illustrated using dashed or dotted lines, unless the context of usage indicates otherwise.
DETAILED DESCRIPTION
[0022] The following description includes the preferred best mode of one embodiment of the present invention. It will be clear from this description of the invention that the invention is not limited to these illustrated embodiments but that the invention also includes a variety of modifications and embodiments thereto. Therefore, the present description should be seen as illustrative and not limiting. While the invention is susceptible to various modifications and alternative constructions, it should be understood, that there is no intention to limit the invention to the specific form disclosed, but, on the contrary, the invention is to cover all modifications, alternative constructions, and equivalents falling within the spirit and scope of the invention as defined in the claims.
[0023] In any embodiment described herein, the open-ended terms "comprising," "comprises,” and the like (which are synonymous with "including," "having” and "characterized by") may be replaced by the respective partially closed phrases "consisting essentially of," consists essentially of," and the like or the respective closed phrases "consisting of," "consists of, the like.
[0024] As used herein, the singular forms “a”, “an”, and “the” designate both the singular and the plural, unless expressly stated to designate the singular only.
[0025] FIG. 1 illustrates an emergency assistance system 100, according to an embodiment of the present invention. The emergency assistance system 100 may be configured to assist wheelchair users in emergency situations for ensuring a safety and a security of the wheelchair users. In an embodiment of the present invention, the emergency situations may be, but not limited to, medical emergency situations, victim situations, and so forth. Embodiments of the present invention are intended to include or otherwise cover any type of the emergency situations.
[0026] The emergency assistance system 100 may comprise a wheelchair 102 and a user computing device 104. The wheelchair 102 may comprise an emergency device 108 that may be connected to the user computing device 104 through a communication network 106. In an embodiment of the present invention, the communication network 106 may be a data network such as, but not limited to, an Internet, a Local Area Network (LAN), a Wide Area Network (WAN), a Metropolitan Area Network (MAN), and so forth. Embodiments of the present invention are intended to include or otherwise cover any type of the data network, including known, related art, and/or later developed technologies.
[0027] In some embodiments of the present invention, the communication network 106 may be a wireless network, such as, but not limited to, a cellular network and may employ various technologies including an Enhanced Data Rates for Global Evolution (EDGE), a General Packet Radio Service (GPRS), and so forth. Embodiments of the present invention are intended to include or otherwise cover any type of the wireless network, including known, related art, and/or later developed technologies.
[0028] According to embodiments of the present invention, the emergency device 108 may be designed to have a compact structure. In an embodiment of the present invention, the emergency device 108 may be fixedly attached to the wheelchair 102. In another embodiment of the present invention, the emergency device 108 may be removably attached to the wheelchair 102. In an embodiment of the present invention, the emergency device 108 may comprise a first input unit 110, a second input unit 112, a buzzer 114, a tracking unit 116, a battery 118, a processing unit 120 and a database 122.
[0029] In an embodiment of the present invention, the first input unit 110 may be externally installed at the emergency device 108, to receive a first input from the wheelchair user. The first input may be an event of generating an alert to notify nearby users about the emergency situations. In an embodiment of the present invention, the first input unit 110 may be a panic button that may be pressed by the wheelchair user in a situation of a distress to generate a sound using the buzzer 114 to alert the nearby users. The panic button may be, but not limited to, a push button, a touch button, and so forth. Embodiments of the present invention are intended to include or otherwise cover any type of the panic button including known, related art, and/or later developed technologies.
[0030] The second input unit 112 may be externally installed at the emergency device 108, to receive a second input from the wheelchair user. The second input may be an event of sharing a location of the wheelchair user. In an embodiment of the present invention, the second input unit 112 may be a location sharing button that may be pressed by the wheelchair user to send alerts about the location of the wheelchair user to pre-defined contacts. The second button may be of any type such as, but not limited to, the push button, the touch button, and alike. Embodiments of the present invention are intended to include or otherwise cover any type of the second button including known, related art, and/or later developed technologies.
[0031] In an alternative embodiment of the present invention, the first input unit 110 and the second input unit 112 may be a Voice Command Interface (VCI) to enable the wheelchair user to provide the first input and/or the second input through voice commands. The voice commands may be, but not limited to, share location, need help, and so forth. Embodiments of the present invention are intended to include or otherwise cover any type of the voice commands. In yet another embodiment of the present invention, the first input unit 110 and the second input unit 112 may be, an eye tracker that may be configured to enable the wheelchair user to provide the first input and/or the second input through eye gestures. In such embodiment of the present invention, the eye tracker may be provided for the wheelchair users suffering from a motor disability. In another embodiment of the present invention, the first input unit 110 and the second input unit 112 may be, a hand gesture interface that may be configured to enable the wheelchair user to provide the first input and/or the second input through hand gestures.
[0032] The buzzer 114 may be installed within the emergency device 108, to generate the sound based on an output generated by the processing unit 120. The sound may be generated to notify the nearby users about the emergency situations, in an embodiment of the present invention. The buzzer 114 may be, but not limited to, a piezoelectric buzzer, a magnetic buzzer, an electromagnetic buzzer, and so forth. Embodiments of the present invention are intended to include or otherwise cover any type of the buzzer 114, including known, related art, and/or later developed technologies.
[0033] In an embodiment of the present invention, the tracking unit 116 may be installed within the emergency device 108, to track a location of the wheelchair user in real time. In an embodiment of the present invention, the tracking unit 116 may be, but not limited to, a Global Positioning System (GPS), an Indian Regional Navigation Satellite System (IRNSS), and so forth. Embodiments of the present invention are intended to include or otherwise cover any type of the tracking unit 116, including known, related art, and/or later developed technologies. In an embodiment of the present invention, the GPS may be used to track the location of the wheelchair user. In another embodiment of the present invention, a goggle map Application Programming Interface (API) may be used to track the location of the wheelchair user that may fetch a nearby wireless internet connection to track the location, when the GPS is not working properly. The wireless internet connection may be, a cellular network, a Wireless Fidelity (Wi-Fi), and so forth. Embodiments of the present invention are intended to include or otherwise cover any type of the wireless internet connection, including known, related art, and/or later developed technologies.
[0034] The battery 118 may be internally installed within the emergency device 108, to supply a pre-defined amount of energy to the emergency device 108. In a preferred embodiment of the present invention, the battery 118 may be having a capacity of 400 milliampere per hour (mAh). In an embodiment of the present invention, the battery 118 may be, but not limited to, a lithium-ion battery, a Lithium Polymer (LiPo) battery, and so forth. Embodiments of the present invention are intended to include or otherwise cover any type of the battery 118 that may last for a pre-defined time interval, including known, related art, and/or later developed technologies. In an embodiment of the present invention, the pre-defined time interval may be weeks.
[0035] The processing unit 120 may be connected to the first input unit 110 and the second input unit 112, in an embodiment of the present invention. The processing unit 120 may be configured to process data associated with the emergency device 108, according to embodiments of the present invention. The processing unit 120 may be, but not limited to, a Programmable Logic Control unit (PLC), a microcontroller, a microprocessor, a development board, and so forth. Embodiments of the present invention are intended to include or otherwise cover any type of the processing unit 120 including known, related art, and/or later developed technologies that may be capable of processing the data. Further, components of the processing unit 120 will be explained in detail in conjunction with FIG. 2.
[0036] The database 122 may be connected to the processing unit 120. The database 122 may also be configured to store the data associated with the emergency device 108, in an embodiment of the present invention. In an embodiment of the present invention, the data may be, the tracked location of the wheelchair user, a number of events that may correspond to the first input unit 110 and the second input unit 112, and so forth. The database 122 may be, but not limited to, a centralized database, a distributed database, a personal database, an end-user database, a commercial database, a Structured Query Language (SQL) database, a Non-SQL database, an operational database, a relational database, a cloud database, an object-oriented database, a graph database, and so forth. Embodiments of the present invention are intended to include or otherwise cover any type of the database 122 including known, related art, and/or later developed technologies.
[0037] In an embodiment of the present invention, the user computing device 104 may be a device that may be connected to the emergency device 108 through a Bluetooth, or Near Field Communication (NFC). The user computing device 104 may be, but not limited to, a mobile device, a smart phone, a tablet computer, a portable computer, a laptop computer, a desktop computer, a smart device, and so forth. Embodiments of the present invention are intended to include or otherwise cover any type of the user computing device 104, including known, related art, and/or later developed technologies.
[0038] According to an embodiment of the present invention, the user computing device 104 may comprise software applications such as, but not limited to, an electronic commerce application, a navigation application, a camera application, a media player application, a social networking application, and the like. In a preferred embodiment of the present invention, the user computing device 104 may comprise a safety application 124 that may be adapted to provide an interface to the emergency device 108. In an embodiment of the present invention, the safety application 124 may be configured to send control information to the emergency device 108 to control various operations of the emergency device 108. The operations may be, but not limited to, activate or deactivate the buzzer 114, activate or deactivate the tracking unit 116, check the location that may be tracked by the tracking unit 116, checking a power of the battery 118, and so forth. In an embodiment of the present invention, the safety application 124 may be provided with a user interface to enable the wheelchair user to add contacts to send the tracked location of the wheelchair user.
[0039] FIG. 2 illustrates the components of the processing unit 120 of the emergency device 108, according to an embodiment of the present invention. The components may be, an input receiving module 200, an event fetching module 202, a sound control module 204, and a location sharing module 206.
[0040] In an embodiment of the present invention, the input receiving module 200 may be configured to receive the first input from the first input unit 110 (as shown in the FIG. 1). In another embodiment of the present invention, the input receiving module 200 may be configured to receive the second input from the second input unit 112 (as shown in the FIG. 1). In an embodiment of the present invention, the input receiving module 200 may be configured to transmit the received first input and/or the second input to the event fetching module 202.
[0041] In an embodiment of the present invention, the event fetching module 202 may be configured to fetch the event that may corresponds to the first input from the number of events stored in the database 122 (as shown in the FIG. 1), based on the received first input. In another embodiment of the present invention, the event fetching module 202 may be configured to fetch the event that may corresponds to the second input from the number of the events stored in the database 122, based on the received second input. In an embodiment of the present invention, the event fetching module 202 may be configured to generate an alert activation signal, upon fetching the event that may corresponds to the first input. The event fetching module 202 may be configured to transmit the generated alert activation signal to the sound control module 204. The sound control module 204 may be configured to activate the buzzer 114 (as shown in the FIG. 1) to generate the sound to alert the nearby users about the emergency situations.
[0042] In another embodiment of the present invention, the event fetching module 202 may be configured to generate a location sharing signal upon fetching the event that may corresponds to the second input from the database 122. The event fetching module 202 may be configured to transmit the generated location sharing signal to the location sharing module 206. The location sharing module 206 may be configured to share the location that may be tracked by the tracking unit 116 (as shown in the FIG. 1) to the pre-defined contacts using the safety application 124 (as shown in the FIG. 1) installed within the user computing device 104 (as shown in the FIG. 1).
[0043] FIG. 3 illustrates a diagrammatic view of the emergency device 108 of the emergency assistance system 100, according to an embodiment of the present invention. In a preferred embodiment of the present invention, the emergency device 108 may be installed at one of, armrests 300a-300b (hereinafter referred to as the armrests 300) of the wheelchair 102. In an embodiment of the present invention, the emergency device 108 may be an adjustable emergency device that may be fitted to any type of wheelchairs. The emergency device 108 may comprise the first input unit 110 and the second input unit 112. The first input unit 110 may be the panic button pressed by the wheelchair user, in case the wheelchair user needs help from the nearby users. The second input unit 112 may be the location sharing button that may be pressed by the wheelchair user for sending the location to concerned ones, in case of the emergency situations.
[0044] FIG. 4 illustrates a diagrammatic view 400 of steps involved in sending the location of the wheelchair user by the emergency assistance system 100, according to an embodiment of the present invention.
[0045] At step 402, the location of the wheelchair user may be tracked by the tracking unit 116.
[0046] At step 404, the tracked location may be stored in the database 122. In a preferred embodiment of the present invention, the database 122 may be the cloud database.
[0047] At step 406, the tracked location may be fetched from the database 122 to transmit the fetched location to the pre-defined contacts using the safety application 124 installed within the user computing device 104, when the second input is provided by the wheelchair user through the second input unit 112.
[0048] FIG. 5 illustrates a diagrammatic view of the emergency assistance system 100 for detecting a fall event, according to an embodiment of the present invention. In an embodiment of the present invention, the emergency assistance system 100 may be configured to provide the emergency assistance to the wheelchair user by detecting the fall event of the wheelchair user 500. In an embodiment of the present invention, the wheelchair 102 may comprise the emergency device 108 that may be provided with a position sensor 502 to detect a position of the wheelchair 102 and transmit the detected position to the processing unit 120 (as shown in the FIG. 1) of the emergency device 108. The position sensor 502 may be, but not limited to, a gyroscope sensor, an ultrasonic position sensor, an optical position sensor, and so forth. Embodiments of the present invention are intended to include or otherwise cover any type of the position sensor 502, including known, related art, and/or later developed technologies. The wheelchair 102 may further comprise a Force Sensitive Resistor (FSR) sensor 504 installed at a seat pad of the wheelchair 102, to detect a gesture of the wheelchair user 500. In an embodiment of the present invention, the Force Sensitive Resistor (FSR) sensor 504 may be connected to the emergency device 108, to transmit the detected gesture to the processing unit 120 of the emergency device 108.
[0049] According to embodiments of the present invention, the processing unit 120 may be configured to compare the detected position of the wheelchair user 500 with a threshold position value. The processing unit 120 may also be configured to compare the detected gesture that may be received from the Force Sensitive Resistor (FSR) sensor 504 with a pre-stored pattern of the gesture. The processing unit 120 may further be configured to share the location of the wheelchair user 500 that may be tracked by the tracking unit 116 (as shown in the FIG. 1) to the pre-defined contacts using the safety application 124 (as shown in the FIG. 1) that may be installed within the user computing device 104, when the detected position value exceeds the threshold position value and the detected gesture is not matched with the pre-stored pattern. In another embodiment of the present invention, the processing unit 120 may be configured to generate a false alarm using the buzzer 114 (as shown in the FIG. 1), in case the detected position exceeds the threshold position value and the detected gesture is matched with the pre-stored pattern. The processing unit 120 may also be configured to generate the false alarm using the buzzer 114, in case the detected position is less than or equal to the threshold position value and the detected gesture is not matched with the pre-stored pattern.
[0050] FIG. 6 depicts a flowchart of a method 600 of assisting the wheelchair user in the emergency situations by the emergency assistance system 100, according to an embodiment of the present invention.
[0051] At step 602, the emergency assistance system 100 may receive the first input and/or the second input from the first input unit 110 and/or the second input unit 112 respectively.
[0052] At step 604, the emergency assistance system 100 may fetch the event that may corresponds to the first input and/or the second input stored in the database 122.
[0053] At step 606, the emergency assistance system 100 may activate the buzzer 114 to generate the sound to alert the nearby users about the emergency situations, upon fetching the event that may correspond to the first input.
[0054] At step 608, the emergency assistance system 100 may share the location that may be tracked by the tracking unit 116 to the pre-defined contacts using the safety application 124 installed within the user computing device 104, upon fetching the event that may correspond to the second input.
[0055] FIG. 7 illustrates a flow chart of a method 700 of detecting the fall event of the wheelchair user by the emergency assistance system 100, according to an embodiment of the present invention.
[0056] At step 702, the emergency assistance system 100 may detect the position of the wheelchair.
[0057] At step 704, the emergency assistance system 100 may detect the gesture of the wheelchair user.
[0058] At step 706, the emergency assistance system 100 may compare the detected position of the wheelchair user with the threshold position value and the detected gesture with the pre-stored pattern of the gesture.
[0059] At step 708, the emergency assistance system 100 may share the location of the wheelchair user to the pre-defined contacts, when the detected position value exceeds the threshold position value and the detected gesture is not matched with the pre-stored pattern.
[0060] At step 710, the emergency assistance system 100 may generate the false alarm and the method 700 may return to the step 702, when one of, the above-mentioned condition is not satisfied.
[0061] Embodiments of the invention are described above with reference to block diagrams and schematic illustrations of methods and systems according to embodiments of the invention. It will be understood that each block of the diagrams and combinations of blocks in the diagrams can be implemented by computer program instructions. These computer program instructions may be loaded onto one or more general purpose computers, special purpose computers, or other programmable data processing apparatus to produce machines, such that the instructions which execute on the computers or other programmable data processing apparatus create means for implementing the functions specified in the block or blocks. Such computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means that implement the function specified in the block or blocks.
[0062] While the invention has been described in connection with what is presently considered to be the most practical and various embodiments, it is to be understood that the invention is not to be limited to the disclosed embodiments, but on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.
[0063] This written description uses examples to disclose the invention, including the best mode, and also to enable any person skilled in the art to practice the invention, including making and using any devices or systems and performing any incorporated methods. The patentable scope the invention is defined in the claims, and may include other examples that occur to those skilled in the art. Such other examples are intended to be within the scope of the claims if they have structural elements that do not differ from the literal language of the claims, or if they include equivalent structural elements within substantial differences from the literal languages of the claims.