Patent Publication Number: US-2023144720-A1

Title: Method and system for realizing function by causing elements of hardware to perform linkage operation

Description:
CROSS REFERENCE TO RELATED APPLICATIONS 
     This application is a continuation of U.S. application Ser. No. 17/092,490, filed Nov. 9, 2020, which is a continuation of U.S. application Ser. No. 16/896,225 filed Jun. 9, 2020 (now U.S. Pat. No. 10,887,809), which is a continuation of Ser. No. 16/582,656, filed Sep. 25, 2019 (now U.S. Pat. No. 10,728,818), which is a continuation of U.S. application Ser. No. 16/163,091, filed Oct. 17, 2018 (now U.S. Pat. No. 10,448,299), which is a continuation of U.S. application Ser. No. 16/008,770, filed Jun. 14, 2018 (now U.S. Pat. No. 10,142,901), which is a continuation of U.S. application Ser. No. 15/123,171, filed Sep. 1, 2016 (now U.S. Pat. No. 10,021,612), which is based on PCT Application No. PCT/JP2015/002360, filed May 8, 2015, which claims the benefit of Japanese Priority Patent Application JP 2014-101507, filed May 15, 2014, the entire contents of each are incorporated herein by reference. 
    
    
     TECHNICAL FIELD 
     The present disclosure relates to a method and system for realizing a function by causing elements of hardware or software to perform a linkage operation. 
     BACKGROUND ART 
     In recent years, with the development of information society, it is becoming possible to reflect various demands from users in product development of hardware and software. For example, PTL 1 proposes a technology for enabling an investor to appropriately invest in development of an application program and enabling a developer to appropriately carry out the development. In this technology, the development of an application program can be carried out according to an intention of the investor by scoring the intention of the investor for the investment. 
     CITATION LIST 
     Patent Literature 
     [PTL 1] 
     JP 2013-92997A 
     SUMMARY 
     Technical Problem 
     Even in the technology disclosed in PTL 1, however, various demands from users may not be said to be sufficiently reflected in products. Since products such as application programs provide one complete function, consumers are limited to users to whom the function is necessary. Accordingly, products can be difficult to market unless there is some extent of generality of functions. PTL 1 discloses an example of software, but the same applies to hardware. 
     It is desirable to provide a novel and improved method and system for realizing a function by causing hardware or software to perform a linkage operation to respond to various demands from users. 
     Solution to Problem 
     According to a first exemplary embodiment, the disclosure is directed to a system that stores functional information indicating a capability of each of a plurality of elements located remotely from the system; identifies a function capable of being performed by linking a plurality of the elements based on the stored functional information; and transmits information corresponding to the identified function capable of being performed by linking the plurality of elements to a first device remote from the system. 
     According to a first exemplary embodiment, the disclosure is directed to a method performed by an information processing system, the method comprising: identifying a function capable of being performed by linking a plurality of elements located remotely from the information processing system based on stored functional information indicating a capability of each of the plurality of elements; and transmitting information corresponding to the identified function capable of being performed by linking the plurality of elements to a first device remote from the information processing system. According to another exemplary embodiment, the disclosure is directed to a computer readable medium including computer program instructions, which when executed by an information processing system, cause the information processing system to perform the method discussed above. 
     Advantageous Effects of Invention 
     According to an embodiment of the present disclosure described above, it is possible to realize a function by causing hardware or software to perform a linkage operation to respond to various demands from users. 
     Note that the effects described above are not necessarily limited, and along with or instead of the effects, any effect that is desired to be introduced in the present specification or other effects that can be expected from the present specification may be exhibited. 
    
    
     
       BRIEF DESCRIPTION OF DRAWINGS 
         FIG.  1    is a diagram illustrating an overall configuration of a system to which a technology according to an embodiment of the present disclosure can be applied. 
         FIG.  2    is a diagram illustrating a first specific configuration example of the system illustrated in  FIG.  1   . 
         FIG.  3    is a diagram illustrating a second specific configuration example of the system illustrated in  FIG.  1   . 
         FIG.  4    is a diagram illustrating a third specific configuration example of the system illustrated in  FIG.  1   . 
         FIG.  5    is a diagram illustrating a fourth specific configuration example of the system illustrated in  FIG.  1   . 
         FIG.  6    is a diagram illustrating a fifth specific configuration example of the system illustrated in  FIG.  1   . 
         FIG.  7    is a diagram illustrating a sixth specific configuration example of the system illustrated in  FIG.  1   . 
         FIG.  8    is a diagram illustrating a seventh specific configuration example of the system illustrated in  FIG.  1   . 
         FIG.  9    is a diagram illustrating an eighth specific configuration example of the system illustrated in  FIG.  1   . 
         FIG.  10    is a diagram illustrating a first example of a UI supplied in the system illustrated in  FIG.  1   . 
         FIG.  11    is a diagram illustrating a second example of a UI supplied in the system illustrated in  FIG.  1   . 
         FIG.  12    is an explanatory diagram illustrating a first specific example of a linkage operation of elements in the system illustrated in  FIG.  1   . 
         FIG.  13    is an explanatory diagram illustrating a second specific example of a linkage operation of elements in the system illustrated in  FIG.  1   . 
         FIG.  14    is an explanatory diagram illustrating a third specific example of a linkage operation of elements in the system illustrated in  FIG.  1   . 
         FIG.  15    is an explanatory diagram illustrating a fourth specific example of a linkage operation of elements in the system illustrated in  FIG.  1   . 
         FIG.  16    is an explanatory diagram illustrating a fifth specific example of a linkage operation of elements in the system illustrated in  FIG.  1   . 
         FIG.  17    is an explanatory diagram illustrating a sixth specific example of a linkage operation of elements in the system illustrated in  FIG.  1   . 
         FIG.  18    is a diagram illustrating a configuration example of a system according to an embodiment of the present disclosure. 
         FIG.  19    is a diagram illustrating a functional configuration example of a system according to an embodiment of the present disclosure. 
         FIG.  20    is a diagram illustrating a configuration example of a service platform according to an embodiment of the present disclosure. 
         FIG.  21    is a diagram illustrating a first example of exchange of information regarding elements according to an embodiment of the present disclosure. 
         FIG.  22    is a diagram illustrating a second example of exchange of information regarding elements according to an embodiment of the present disclosure. 
         FIG.  23    is a diagram illustrating a third example of exchange of information regarding elements according to an embodiment of the present disclosure. 
         FIG.  24    is a diagram illustrating a fourth example of exchange of information regarding elements according to an embodiment of the present disclosure. 
         FIG.  25    is a diagram illustrating a fifth example of exchange of information regarding elements according to an embodiment of the present disclosure. 
         FIG.  26    is an explanatory diagram illustrating an example of a package which is sold in the example of  FIG.  25   . 
         FIG.  27    is a diagram illustrating a sixth example of exchange of information regarding elements according to an embodiment of the present disclosure. 
         FIG.  28 A  is an explanatory diagram illustrating how a structure such as that of the example of  FIG.  27    is superior. 
         FIG.  28 B  is an explanatory diagram illustrating how a structure such as that of the example of  FIG.  27    is superior. 
         FIG.  29    is a diagram illustrating a seventh example of exchange of information regarding elements according to an embodiment of the present disclosure. 
         FIG.  30    is a block diagram illustrating a hardware configuration example of an information processing apparatus according to an embodiment of the present disclosure. 
     
    
    
     DESCRIPTION OF EMBODIMENTS 
     Hereinafter, preferred embodiments of the present disclosure will be described in detail with reference to the appended drawings. Note that, in this specification and the appended drawings, structural elements that have substantially the same function and structure are denoted with the same reference numerals, and repeated explanation of these structural elements is omitted. 
     The description will be made in the following order.
     1. Example of applicable system   1-1. Overall configuration   1-2. Specific configuration examples   1-3. Examples of user interface   1-4. Examples of linkage operations   2. Embodiments of the present disclosure   2-1. System configuration example   2-2. Configuration of service platform   2-3. Examples of exchange of information regarding element   2-4. Conclusion of embodiment   3. Hardware configuration   4. Supplement   

     1. Example of Applicable System 
     1-1. Overall Configuration 
       FIG.  1    is a diagram illustrating an overall configuration of a system to which a technology according to an embodiment of the present disclosure can be applied. Referring to  FIG.  1   , a system  10  includes an element  100 , a manager  200 , a server  300 , and a user interface (UI) device  400 . These devices are mutually connected via a network NW. The network NW includes, for example, Bluetooth (registered trademark), Wi-Fi, and the Internet. The system  10  will be described below as an example, but the technology according to the embodiment of the present disclosure can also be applied to various other systems. 
     The element  100  is a device that includes a communication unit  110 , a control unit  120 , a function unit  130 , and a power unit  140 . The communication unit  110  includes a communication device that communicates with the manager  200  and/or another element  100  via the network NW. The control unit  120  is realized by, for example, a micro-controller or a central processing unit (CPU) and controls the function unit  130 . The function unit  130  includes, for example, a sensor or an actuator and realizes a unique function of each element  100 . The power unit  140  includes a battery or a power plug and supplies power to operate the communication unit  110 , the control unit  120 , and the function unit  130 . A power unit is included in not only the element  100  but also the other devices, but is not illustrated. 
     The manager  200  is a device that includes a communication unit  210 , a control unit  220 , and a storage unit  230 . The communication unit  210  can include a communication device that communicates with the element  100 , the server  300 , and the UI device  400  via the network NW. The control unit  220  is realized by, for example, a micro-controller or a CPU and controls communication between the elements  100  and between the element  100  and the server  300  via the communication unit  210 . The control unit  220  can include a calculation unit  221 . The calculation unit  221  performs calculation on information received from the element  100 , information transmitted to the element  100 , information transmitted to the server  300 , information received from the server  300 , and the like. The storage unit  230  includes a memory or storage and stores information exchanged through the communication controlled by the control unit  220 , information calculated by the calculation unit  221 , and the like. 
     The server  300  includes a communication unit  310 , a control unit  320 , and a storage unit  330 . The communication unit  310  includes a communication device that communicates with the manager  200  via the network NW. The control unit  320  is realized by, for example, a micro-controller or a CPU and can include a calculation unit  321  and a UI supply unit  323 . The calculation unit  321  performs calculation on information received from the element  100  or the manager  200 , information transmitted to the element  100  or the manager  200 , information received from another server, information transmitted to another server, and the like. The UI supply unit  323  supplies a UI so that a user can designate a combination of the element  100  and/or the manager  200  and confirm various kinds of information. For example, the UI is supplied via a display, a touch panel, or the like included in an input and output unit  430  of the UI device  400 . The storage unit  330  includes a memory or a storage and stores various kinds of information regarding the element  100 , a program causing the plurality of elements  100  to operate in combination, software which can be combined with the element  100 , information calculated by the calculation unit  321 , and the like. 
     Here, the storage unit  330  of the server  300  stores, for example, identification information (ID) of the element  100  in the system  10 . The element  100  can be added to the system  10  at any time. The storage unit  330  also stores a program causing the plurality of elements  100  to operate in combination. A program can be added at any time by, for example, a user, a developer, or a system administrator. The storage unit  330  stores software. For example, when the software is executed in combination with the element  100 , a function is realized. Alternatively, a function may also be realized by executing software in combination. Examples of the functions by which software is realized can include supply of materials such as audio or an image, a timer, a calendar, an analysis function for image recognition, audio recognition, and the like, and an information acquisition function from an external service such as a weather forecast or news. Software can be added at any time by, for example, a user, a developer, or a system administrator. 
     On the other hand, for example, the UI supply unit  323  of the server  300  supplies a UI via the display, the touch panel, or the like included in the input and output unit  430  of the UI device  400 . For example, the user can select a program causing the plurality of elements  100  to operate in combination via the UI from programs preinstalled in the elements  100  or the manager  200  and programs supplied by the server  300 . The user can also designate a combination of the plurality of elements  100 , a combination of the element  100  and software, or a combination of a plurality of types of software via the UI. When the designated combination is stored as a program in the storage unit  330  of the server  300  and the program is executed by the element  100  and the software, the user can obtain a desired application. 
     The UI device  400  is a device that includes a communication unit  410 , a control unit  420 , and the input and output unit  430 . The communication unit  410  can include a communication device that communicates with the manager  200  and the server  300  via the network NW. The control unit  420  is realized by, for example, a micro-controller or a CPU to control the input and output unit  430  and control exchange of information via the communication unit  410 . The input and output unit  430  includes, for example, a display, a speaker, and a touch panel, suggests various kinds of information to the user via the UI, and receives a manipulation input from the user. 
     1-2. Specific Configuration Examples 
     First Example 
       FIG.  2    is a diagram illustrating a first specific configuration example of the system illustrated in  FIG.  1   . Referring to  FIG.  2   , a system  10   a  includes a first tablet functioning as an element  100 , a second tablet functioning as the element  100 , a manager  200 , and a UI device  400 , and a server  300 . 
     Both of the first and second tablets similarly include a display, a touch panel, a CPU, and a sensor. In the system  10   a,  one of the two tablets functions as the element  100 , the manager  200 , and the UI device  400  and the other tablet functions as the element  100 . The roles of these tablets may be compatible and tablets functioning as the manager  200  and the UI device  400  may switch according to a circumstance. In the system  10   a,  for example, a function desired by the user can be realized by using various sensors of the tablets and operating the two tablets in combination. 
     In the example illustrated in  FIG.  2   , the first and second tablets are examples of terminal devices including the function unit  130  (a sensor or the like) functioning as the element  100  and the control unit  220  (a CPU or the like) functioning as the manager  200 . The terminal devices are not limited to the tablets, but may be other devices such as smartphones. The number of terminal devices included in the system  10   a  is not limited to the number in the illustrated example. For example, three or more terminal devices may be used. 
     Second Example 
       FIG.  3    is a diagram illustrating a second specific configuration example of the system illustrated in  FIG.  1   . Referring to  FIG.  3   , a system  10   b  includes elements  100   a  to  100   g,  a tablet functioning as a manager  200  and a UI device  400 , and a server  300 . 
     The system  10   b,  the tablet functions as the manager  200  and the UI device  400 . As in the foregoing first example, the tablet may be replaced with another device such as a smartphone. In the illustrated example, the elements  100  include an acceleration sensor  100   a,  a camera  100   b,  a human detection sensor  100   c,  a button  100   d,  a speaker  100   e,  a light-emitting diode (LED) lamp  100   f,  and a microphone  100   g.  Each of the elements  100  communicates with the tablet through wireless communication such as Bluetooth (registered trademark) and performs a linkage operation under the control of the manager  200  realized by the tablet. 
     In the following examples, some or all of the acceleration sensor  100   a  to the microphone  100   g  are illustrated as examples of the elements  100 , but kinds of the elements  100  are not intended to be limited to those used in any of the examples. In each of the examples, the system  10  can include any of the acceleration sensor  100   a  to the microphone  100   g  or any other kinds of elements  100 . 
     Third Example 
       FIG.  4    is a diagram illustrating a third specific configuration example of the system illustrated in  FIG.  1   . Referring to  FIG.  4   , a system  10   c  includes elements  100 , a manager  200 , a tablet functioning as a UI device  400 , and a server  300 . 
     In the system  10   c,  the manager  200  is present independently from the tablet functioning as the UI device  400 . For example, the manager  200  may be realized by a dedicated device or may be realized as one of the functions of a base station of Wi-Fi or the like. As in the foregoing first and second examples, the tablet functioning as the UI device  400  may be replaced with another device such as a smartphone. The manager  200  and the tablet can independently communicate with the server  300 . When settings of the system  10   c  are changed through a UI supplied by the tablet, the tablet may transmit setting information directly to the manager  200  via Wi-Fi or the like. 
     In the example of  FIG.  4   , not only Bluetooth (registered trademark) but also Wi-Fi is used for the communication between the manager  200  and the elements  100 . A mesh network repeater NW_m by Wi-Fi or the like is used for connection to the elements  100  located at remote places. An embodiment of the present disclosure is not limited to the illustrated third example. In other examples, various types of wireless communication such as Bluetooth (registered trademark) or Wi-Fi can also be used for communication between the elements  100  and the manager  200  and/or between the elements  100 . 
     Fourth Example 
       FIG.  5    is a diagram illustrating a fourth specific configuration example of the system illustrated in  FIG.  1   . Referring to  FIG.  5   , a system  10   d  includes elements  100  of which some also function as a manager  200 , a tablet functioning as a UI device  400 , and a server  300 . 
     Unlike the foregoing first to third examples, at least one of the elements  100  functions as the manager  200  in the system  10   d.  In the system  10   d,  the elements  100  mutually form a mesh network through Bluetooth (registered trademark). In such a configuration, even when communication with the server  300  and the UI device  400  (tablet) is temporarily disconnected in the system  10   d,  the elements  100  can autonomously perform a linkage operation. 
     Fifth Example 
       FIG.  6    is a diagram illustrating a fifth specific configuration example of the system illustrated in  FIG.  1   . Referring to  FIG.  6   , a system  10   e  includes elements  100  of which some function as a manager  200 , a tablet functioning as a UI device  400 , and a server  300 . The system  10   e  is an example in which the manager  200  is incorporated into any of the elements  100  in the system  10   c  in the foregoing third example. 
     Sixth Example 
       FIG.  7    is a diagram illustrating a sixth specific configuration example of the system illustrated in  FIG.  1   . Referring to  FIG.  7   , a system  10   f  includes elements  100 , managers  200   a  and  200   b,  a tablet functioning as a UI device  400 , and a server  300 . The system  10   f  is an example in which the plurality of managers  200  are disposed in the system  10   c  in the foregoing third example. For example, each of the elements  100  can be connected to a manager of which a position is closer between the managers  200   a  and  200   b.  A connection state of the elements  100  and a program causing the elements  100  to perform a linkage operation are synchronized as necessary or periodically between the plurality of managers  200   a  and  200   b.    
     Seventh Example 
       FIG.  8    is a diagram illustrating a seventh specific configuration example of the system illustrated in  FIG.  1   . Referring to  FIG.  8   , a system  10   g  includes elements  100 , a manager  200   a,  a tablet functioning as a manager  200   b  and the UI device  400 , and a server  300 . The system  10   g  is an example in which the function of the manager  200   b  is integrated into the tablet in the system  10   f  in the foregoing sixth example. For example, each of the elements  100  can be connected to a manager of which a position is closer between the manager  200   a  and the tablet. A connection state of the elements  100  and a program causing the elements  100  to perform a linkage operation are synchronized as necessary or periodically between the manager  200   a  and the tablet. 
     Eighth Example 
       FIG.  9    is a diagram illustrating an eighth specific configuration example of the system illustrated in  FIG.  1   . Referring to  FIG.  9   , a system  10   h  includes elements  100 , a tablet functioning as a UI device  400 , and a server  300  functioning as a manager  200 . The system  10   h  is an example in which the functions of the manager  200  are incorporated into the server  300  in the system  10   b  in the foregoing second example. For example, each of the elements  100  directly communicates with the server  300  via a mobile communication network or the like. 
     The several specific configuration examples of the system  10  illustrated in  FIG.  1    have been described. Specific configuration examples of the system  10  are not limited to the above-described examples, but various modification examples which those skilled in the art will clearly understand based on these configuration examples can be included. 
     1-3. Examples of User Interface 
       FIG.  10    is a diagram illustrating a first example of the UI supplied in the system illustrated in  FIG.  1   . Referring to  FIG.  10   , a screen  4100  displayed on the display of a terminal device functioning as the UI device  400  includes a user profile  4101 , a program list tab  4103 , and an element list tab  4105 . Since the program list tab  4103  is selected in the illustrated example, a program list  4107  is displayed. The program list  4107  includes program icons  4109 , use element icons  4111 , and descriptions  4113 . For example, the screen  4100  can be displayed as a portal screen when the user uses a service provided by the system  10 . 
       FIG.  11    is a diagram illustrating a second example of the UI supplied in the system illustrated in  FIG.  1   . Referring to  FIG.  11   , a screen  4200  displayed on the display of the terminal device functioning as the UI device  400  includes a tool bar  4201 , a canvas  4203 , and a tray  4205 . For example, the screen  4200  is used to edit a program causing the elements  100  in the system  10  to perform a linkage operation. In the tool bar  4201 , function buttons such as “save” and “redo” are disposed. In the canvas  4203 , element icons  4207 , a detailed information icon  4209 , and links  4211  can be disposed or drawn. Referring to such icons and links, the elements  100  used for the linkage operation, a process performed by each element  100 , and a relation between the elements  100  can be set and confirmed. In the canvas  4203 , an element property box  4213  is disposed, for example, to display the properties or states of the elements  100  disposed as the element icons  4207 . In the tray  4205 , the elements  100 , software, or the like which can be embedded into a program by being disposed in the canvas  4203  are displayed as icons. 
     The UIs described with reference to  FIGS.  10  and  11    are merely examples and UIs with various forms can be supplied in the embodiment. For example, on the screen for editing of a program, as described with reference to  FIG.  11   , various UIs used on screens for visual programming can be applied. 
     1-4. Examples of Linkage Operations 
     Hereinafter, specific examples of a linkage operation of the elements in the system illustrated in  FIG.  1    will be further described. To facilitate understanding, the description will be made below with reference to a diagram visually expressing a program causing the elements  100  to perform a linkage operation. Such a diagram is not necessarily associated with a UI (for example, a UI exemplified as the screen  4200  in  FIG.  11   ) provided by the UI device  400 . Software to be described below may be provided as an element (software element) similar to the element  100  (hardware element) or may be provided as a part of the function or operation of the element  100 . 
     First Specific Example 
       FIG.  12    is an explanatory diagram illustrating a first specific example of a linkage operation of the elements in the system illustrated in  FIG.  1   . Referring to  FIG.  12   , in this example, the acceleration sensor  100   a  and the camera  100   b  are used among the elements  100 . For example, the acceleration sensor  100   a  is mounted on a door of a refrigerator and the camera  100   b  is mounted at a position at which the inside of the refrigerator can be imaged. In the illustrated example, a link  601  oriented from the acceleration sensor  100   a  to the camera  100   b  means that “the camera  100   b  performs photographing based on a detected value of the acceleration sensor  100   a .” In the illustrated example, “uploading a captured image to the server” is designated as an operation of the camera  100   b.    
     In the illustrated example, software  603   a  detecting that the door is opened based on acceleration is used. The software  603   a  is executed by, for example, the calculation unit  221  of the manager  200  and detects that the door of the refrigerator is opened based on an analysis result of a value detected by the acceleration sensor  100   a.  By introducing the software  603   a,  the link  601  is a process in which “the camera  100   b  performs photographing when it is determined that the door of the refrigerator is opened based on the value detected by the acceleration sensor  100   a”   
     Through the setting of such a program, in this example, an image photographed by the camera  100   b  when the door of the refrigerator is opened is uploaded to the server. The user can comprehend a change of the contents or a latest inventory state of the refrigerator by viewing the uploaded image. 
     Here, when opening of the door of the refrigerator is desired to be detected, a sensor dedicated for opening and closing detection using magnetism can also be used. In this example, however, by introducing the software  603   a,  it is possible to detect that the door is opened using the acceleration sensor  100   a.  Accordingly, in order to detect opening of the door of the refrigerator, for example, the acceleration sensor  100   a  used for another purpose until that time can be appropriated rather than using a dedicated sensor. When it is already unnecessary to detect that the door of the refrigerator is opened, the acceleration sensor  100   a  can be diverted to another purpose. Thus, in the embodiment, by changing a combination with software or other elements  100 , the same elements  100  can be utilized for various purposes. 
     Second Specific Example 
       FIG.  13    is an explanatory diagram illustrating a second specific example of a linkage operation of the elements in the system illustrated in  FIG.  1   . Referring to  FIG.  13   , in this example, the acceleration sensor  100   a  and the button  100   d  are used among the elements  100 . For example, the acceleration sensor  100   a  is mounted on the door of a bathroom and the button  100   d  is mounted on a lavatory. In the illustrated example, software  603   a  detecting that the door is opened based on acceleration and software  603   b  recording supplied data are further used. The link  601  oriented from the acceleration sensor  100   a  to the software  603   b  via the software  603   a  means that “the software  603   b  records the fact that it is determined based on a value detected by the acceleration sensor  100   a  that the door is opened.” The link  601  oriented from the button  100   d  to the software  603   b  means that the software  603   b  records the fact that a signal is output from the button  100   d.”   
     In this example, by setting the program in this way, a time at which the user presses the button  100   d  in the lavatory and a time at which the door of the toilet is opened are recorded in a log. For example, when the user decides to press the button  100   d  to wash his or her face in the lavatory after getting up, a time at which the button  100   d  is pressed can be recorded as a time of getting up. For example, changes in the time of getting up every day and the time at which the user goes to the bathroom can be referred to chronologically, and thus such a log is helpful in improving a life rhythm of the user. 
     Third Specific Example 
       FIG.  14    is an explanatory diagram illustrating a third specific example of a linkage operation of the elements in the system illustrated in  FIG.  1   . Referring to  FIG.  14   , in this example, the acceleration sensor  100   a  and the human detection sensor  100   c  are used among the elements  100 . For example, the acceleration sensor  100   a  is mounted on a chair and the human detection sensor  100   c  is mounted on a desk in front of the chair. In the illustrated example, software  603   c  recording a time at which the user sits on the chair based on detection results of the acceleration sensor  100   a  and the human detection sensor  100   c  is further used. The link  601  oriented from the acceleration sensor  100   a  to the software  603   c  means that “a value detected by the acceleration sensor  100   a  is supplied to the software  603   c .” The link  601  oriented from the human detection sensor  100   c  to the software  603   c  means that “a value detected by the human detection sensor  100   c  is supplied to the software  603   c.”   
     In this example, by setting the program in this way, a time at which the user sits on the chair is recorded. The user can comprehend the time at which the he or she sits in his or her workplace based on the record and can take a break when a time for which he or she has continued to sit is too long. Alternatively, software outputting an alert from a smartphone based on the detection result of the software  603   c  may be further embedded. Then, when the user continues to sit for longer than a predetermined time, an alert may be output from the smartphone to urge the user to take a break. 
     Fourth Specific Example 
       FIG.  15    is an explanatory diagram illustrating a fourth specific example of a linkage operation of the elements in the system illustrated in  FIG.  1   . Referring to  FIG.  15   , in this example, the acceleration sensor  100   a,  the speaker  100   e,  and the LED lamp  100   f  are used among the elements  100 . For example, the acceleration sensor  100   a,  the speaker  100   e,  and the LED lamp  100   f  are mounted on appropriate parts of the body of a user (for example, a child). The plurality of acceleration sensors  100   a  may be used. In the illustrated example, software  603   d  reproducing a sound effect according to a pattern of acceleration and software  603   e  flashing a lamp in a predetermined pattern similarly according to a pattern of acceleration are further shown. The pattern of acceleration handled by the software  603  may be a pattern of a single acceleration waveform or may be a combination pattern of a plurality of acceleration waveforms. The link  601  is set to be oriented from the acceleration sensor  100   a  to each of the software  603   d  and the software  603   e.  The link  601  means that “a value detected by the acceleration sensor  100   a  is supplied to each of the software  603   d  and the software  603   e .” The link  601  is set from the software  603   d  to the speaker  100   e  and is set from the software  603   e  to the LED lamp  100   f.  The links  601  means that “the speaker  100   e  outputs audio according to an audio signal supplied by the software  603   d ” and “the LED lamp  100   f  emits light according to a signal supplied by the software  603   e.”   
     By setting the program in this way, in this example, a sound effect is output from the speaker  100   e  or light is emitted from the LED lamp  100   f  when the user (for example, a child) moves his or her hand or leg in a specific pattern. Thus, for example, when the child pretends to be a superhero, the child can have an exciting experience with the sound effect and the light. 
     Fifth Specific Example 
       FIG.  16    is an explanatory diagram illustrating a fifth specific example of a linkage operation of the elements in the system illustrated in  FIG.  1   . Referring to  FIG.  16   , in this example, the acceleration sensor  100   a,  the human detection sensor  100   c,  the camera  100   b,  and the LED lamp  100   f  are used among the elements  100 . For example, the acceleration sensor  100   a,  the human detection sensor  100   c,  and the camera  100   b  are mounted on a bird table of a garden and the LED lamp  100   f  is mounted inside a house. In the illustrated example, software  603   f  for determining that a bird is sitting on the bird table based on detection results of the acceleration sensor  100   a  and the human detection sensor  100   c  is further shown. The link  601  is set to be oriented from each of the acceleration sensor  100   a  and the human detection sensor  100   c  to the software  603   f.  The link  601  from the acceleration sensor  100   a  means that “a value detected by the acceleration sensor  100   a  is supplied to the software  603   f .” The link  601  from the human detection sensor  100   c  means that “a value detected by the human detection sensor  100   c  is supplied to the software  603   f .” The software  603   f  is supplied with, for example, a condition satisfied by a combination of sensor data supplied by the acceleration sensor  100   a  and the human detection sensor  100   c.  The link  601  is set to be oriented from the software  603   f  to each of the camera  100   b  and the LED lamp  100   f.  The link  601  to the camera  100   b  means that “the camera  100   b  performs photographing based on an output of the software  603   f .” The link to the LED lamp  100   f  means that “the LED lamp  100   f  is caused to emit light based on an output of the software  603   f.”   
     By setting the program in this way, in this example, when a bird sits on the bird table, a still image or a moving image is automatically photographed by the camera  100   b , and thus a user can see what type of bird has come. When the bird sits on the bird table and the LED lamp  100   f  inside the house thus emits light, the user can come out to the garden to actually see the bird that has come. 
     Sixth Specific Example 
       FIG.  17    is an explanatory diagram illustrating a sixth specific example of a linkage operation of the elements in the system illustrated in  FIG.  1   . Referring to  FIG.  17   , in this example, the button  100   d  and the speaker  100   e  are used among the elements  100 . For example, the speaker  100   e  is disposed in a bedroom and the button  100   d  is disposed in a lavatory. In the illustrated example, software  603   g  of an alarm clock is further shown. The link  601  is set from the software  603   g  to the speaker  100   e.  The link  601  means that “the speaker  100   e  outputs audio according to an audio signal output by the software  603  when a set time comes.” The link  601  is set from the button  100   d  to the software  603   g.  The link  601  means that “an output of an audio signal by the software  603   g  stops when the button  100   d  is pressed.” 
     By setting the program in this way, in this example, the sound of the alarm clock output from the speaker  100   e  disposed in the bedroom does not stop until the button  100   d  in the lavatory is pressed. Thus, since a situation in which the alarm stops despite the fact that the user is still asleep rarely occurs, the user can reliably wake up at a scheduled time. 
     2. Embodiments of the Present Disclosure 2-1. Configuration Examples of System 
       FIG.  18    is a diagram illustrating a configuration example of a system according to an embodiment of the present disclosure. Referring to  FIG.  18   , a system  1000  includes end user terminals  1100  and servers  1300 . The end user terminals  1100  and the servers  1300  are mutually connected via a network  1200 . 
     The end user terminals  1100  are terminal devices used by end users. The end users are, for example, the user of the system  10  described above with reference to  FIG.  1    and the like. As will be described below, the end users have a software element, a hardware element, and an execution environment. The end user terminals  1100  exchange, for example, information regarding the elements, such as information regarding purchase of the elements, information regarding a combination method for the elements, and information regarding proposals of new elements, with the servers  1300 . The end user terminals  1100  can also download an execution environment or a software element from the servers  1300 . The end user terminals  1100  output the information received from the servers  1300  to the users via an output unit such as a display and transmit information corresponding to a manipulation input given from the users via an input unit such as a touch panel, a keyboard, or a mouse to the servers  1300 . In the illustrated example, the end user terminals  1100  include a smartphone  1100   a,  a personal computer  1100   b,  and a tablet  1100   c.  However, the end user terminals  1100  are not limited to these devices and can include all kinds of terminal devices capable of realizing the above-described functions. 
     The servers  1300  supply a service to at least one of the end user terminals  1100 . The servers  1300  are configured of one or a plurality of server devices. In the illustrated example, the servers  1300  include server devices  1300   a  to  1300   c,  but the number of server devices is not limited to this example. The number of server devices may be singular or may be a number greater than 2 or 3. The servers  1300  can be administered by one service supply entity or a plurality of service supply entities. For example, the servers  1300  can be administered by a service provider managing all of the services, an element or content supplier, a manufacturer, and the like. For example, the server devices  1300   a  to  1300   c  in the illustrated example may all be administered by the same service supply entity or may be administered by mutually different service supply entities. A single server apparatus, e.g., the server device  1300   a,  may be commonly administered by a plurality of service supply entities. The servers  1300  exchange, for example, the information regarding the elements, such as information regarding purchase of the elements, information regarding a combination method for the elements, and information regarding proposals of new elements, with the end user terminals  1100 . The servers  1300  may also be able to allow the end user terminals  1100  to download the execution environment or the software element. The servers  1300  transmit information to be output to the users to the end user terminals  1100  and receive information corresponding to a manipulation input given from the users from the end user terminals  1100 . 
       FIG.  19    is a diagram illustrating a functional configuration example of a system according to an embodiment of the present disclosure. Referring to  FIG.  19   , the end user terminal  1100  includes a communication unit  1110 , a control unit  1120 , a storage unit  1130 , and an input and output unit  1140 . The server  1300  includes a communication unit  1310 , a control unit  1320 , and a storage unit  1330 . 
     In the end user terminal  1100 , the communication unit  1110  is realized by a communication device that performs wired or wireless communication and performs communication with the server  1300  via the network  1200 . The control unit  1120  is realized by a processing circuit such as a CPU and performs various kinds of calculation to control the entire end user terminal  1100 . The storage unit  1130  is realized by a memory or a storage device and stores various kinds of data used by the end user terminal  1100 , such as a program causing the control unit  1120  to function. The input and output unit  1140  is realized by an input device such as a touch panel, a keyboard, or a mouse and an output device such as a display. The input and output unit  1140  receives a manipulation input from the user and outputs various kinds of information to the user. 
     In the server  1300 , the communication unit  1310  is realized by a communication device that performs wired or wireless communication and performs communication with the end user terminal  1100  via the network  1200 . The control unit  1320  is realized by a processing circuit such as a CPU and performs various kinds of calculation to control the entire server  1300  (or the individual server device). The storage unit  1330  is realized by a memory or a storage device and stores various kinds of data used by the server  1300 , such as a program causing the control unit  1320  to function. In the illustrated example, the server  1300  does not include an input and output unit since the server  1300  exclusively provides a service to the end user terminal  1100  according to the program stored in the storage unit  1330 . In several examples of the embodiments, however, the server  1300  may include an input and output unit so that a service provider, a supplier, a manufacturer, and the like changes settings of a service or updates information regarding the element. 
     2-2. Configuration of Service Platform 
       FIG.  20    is a diagram illustrating a configuration example of a service platform according to an embodiment of the present disclosure. Referring to  FIG.  20   , a service platform  2200  includes a manager function  2201 , an element selling and charging function  2207 , a user management function  2209 , and an element management function  2211 . The service platform  2200  is supplied, for example, to cause the system  10  described above with reference to  FIG.  1    and the like to function. 
     In the service platform  2200 , the manager function  2201  can correspond to the function of the manager  200  of the system  10  in the example of  FIG.  1   . Accordingly, the service platform  2200  can be mounted on, for example, the device of the manager  200  described above with reference to  FIGS.  2  to  9   . Alternatively, the manager function  2201  is mounted on the device of the manager  200  and, on the other hand, the other functions may be mounted on another device such as the server  300  or the like. The device on which the service platform  2200  is mounted may be the same or may differ among the foregoing end user terminals  1100 . The element selling and charging function  2207 , the user management function  2209 , and the element management function  2211  may be mounted on the end user terminal  1100  or may be mounted on other devices to exchange information with the end user terminal  1100 , as necessary. Hereinafter, each constituent element will be described. 
     The manager function  2201  includes a program management function  2203  and an execution environment  2205 . The manager function  2201  manages a hardware element  100   h  and/or a software element  100   s  and causes these elements to realize a linkage operation. The program management function  2203  manages a program defining the linkage operation by these elements. More specifically, the program management function  2203  can read a preinstalled program or a program supplied by the server and can update the program, correct the program, generate a new program according to a user&#39;s manipulation. The execution environment  2205  causes the hardware element  100   h  and/or the software element  100   s  to perform the linkage operation according to the program managed by the program management function  2203 . 
     The element selling and charging function  2207  manages selling and charging of the hardware element  100   h  and the software element  100   s.  For example, these elements may be sold by sending the body of the hardware element  100   h  or a medium recording a program of the software element  100   s  or may be sold by downloading a valid key of the hardware element  100   h  or the program of the software element  100   s . The hardware element  100   h  or the software element  100   s  may be validated only for a predetermined period by charging. The element selling and charging function  2207  supplies the element management function  2211  with information indicating a state of the selling or the charging of the elements included in the system  10 . 
     The user management function  2209  manages the users of the system  10 . As will be described below, in the service according to the embodiment, the elements  100  included in the system  10  are managed for each user and the elements  100  used by the user to construct the system  10  are managed. The user management function  2209  enables the element management function  2211  to specify the elements which can be used by the users in the system  10  by managing the users of the system  10  in conjunction with the element selling and charging function  2207 . 
     The element management function  2211  manages the elements included in the system  10 . As described above, the elements include the hardware element  100   h  and the software element  100   s.  When the hardware element  100   h  is embedded in the system  10 , the body thereof is first necessarily received by the user of the system  10 . A software portion embedded in the hardware element  100   h  may be validated by inputting authentication information through a validation key or the like or by performing a validation manipulation via the execution environment  2205 . In this case, the hardware element  100   h  for which the software portion is not validated is embedded in the system  10  despite the fact that the body thereof is received by the user, but the software portion can be validated and can first be embedded in the system  10 . 
     On the other hand, when the software element  100   s  is embedded in the system  10 , it is necessary for a program module to be downloaded to be received by the user (the manager  200  or the element  100  having a calculation function) or it is necessary for an application program interface (API) of the software element  100   s  supplied on the server to be available. As in the hardware element  100   h,  a validation order may be necessary in the software element  100   s.  In this case, the software element  100   s  can be validated and can first be embedded in the system  10 . 
     The element management function  2211  manages the hardware element  100   h  of which the body is received by the user and for which the software portion is validated (or the validation order is not necessary) and the software element  100   s  which is downloaded to be received by the user (or the API on the server is available) and is validated (or the validation order is not necessary) as the elements included in the system  10 . 
     The element management function  2211  may handle a hardware element of which a body is not received by the user or for which a software portion is not validated and a software element which is not downloaded to be received by the user (or an API on the server is not available) or is not validated as elements not included in the system  10  and may simulate a combination with, for example, the elements included in the system  10 . An element not included in the system  10  can also be newly included in the system  10  by selling or charging the element, transmitting the body or acquiring a validation key, or downloading a program. 
     Information regarding the element not included in the system  10  can be supplied from the server  1300  to the end user terminal  1100 , as will be described below. The element management function  2211  can acquire the information from the user terminal  1100  (the element management function  2211  is mounted on the user terminal  1100  in some cases). 
     2-3. Examples of Exchange of Information Regarding Element 
     First Example 
       FIG.  21    is a diagram illustrating a first example of exchange of information regarding elements according to an embodiment of the present disclosure. In the example illustrated in  FIG.  21   , an end user purchases the element  100  which is sold on the server  1300  of the service provider via the end user terminal  1100 . The end user already possesses the execution environment  2205  and an element  100   p.  In the illustrated example, the end user can use a simulation supplied for the sale on the server  1300  using the end user terminal  1100 . 
     When the simulation is used, the user first inputs a function desired to be realized in the system  10  and/or information regarding the element  100   p  already possessed by the user with the end user terminal  1100 . The end user terminal  1100  transmits the information to the server  1300  (S 041 ). For example, the server  1300  generates simulation information regarding a combination of the elements  100  capable of realizing the function desired to be realized with the system  10  by the user and/or a combination of the elements  100  utilizing the element  100   p  already possessed by the user and transmits the simulation information to the end user terminal  1100  (S 042 ). The simulation information can include information regarding an element  100   q  which the user does not yet possess (or which is not available) in the combination of the proposed elements  100  or information regarding a function or the like realized when the combination of the elements  100  is performed on the execution environment  2205 . 
     When the function supplied by the combination of the proposed elements  100  satisfies a request, the user referring to the simulation information using the end user terminal  1100  can purchase the element  100   q  that he or she does not yet possess. For example, a request for purchasing the element  100   q  is transmitted from the end user terminal  1100  to the server  1300 . The service provider receiving the purchase request with the server  1300  sells the element  100   q  to the user by sending a hardware element associated with the purchase request and causing a software element to be downloadable. The user who is able to use the element  100   q  can use the desired function in the system  10  by causing the already possessed element  100   p  and the newly purchased element  100   q  to perform a linkage operation in the execution environment  2205 . 
     In the foregoing example, for example, when the simulation information is referred to with the end user terminal  1100 , a program defining a linkage operation of the elements associated with the simulation may be downloadable. Thus, for example, when the element  100   q  can be used through the purchase, the user can realize the linkage operation of the elements without performing a separate setting manipulation or the like of defining the linkage operation. In the execution environment  2205 , for example, a communication path of the elements  100   p  and  100   q  is set and identifiers of the elements  100   p  and  100   q  in the system  10  are decided according to a downloaded program. 
     Second Example 
       FIG.  22    is a diagram illustrating a second example of exchange of information regarding elements according to an embodiment of the present disclosure. In the example illustrated in  FIG.  22   , an end user A uses an end user terminal  1100   a  to transmit the program defining the linkage operation of the elements  100  in the system  10  to the server  1300  of the service provider (S 051 ). In the second example, information regarding a program supplied here by the end user A is shared with another end user B. More specifically, the information supplied by the end user A is used as simulation information for the end user B. 
     In the illustrated example, the end user B inputs information regarding a function desired to be realized in the system  10  and/or the element  100   p  already possessed by the end user B with the end user terminal  1100   b.  The end user terminal  1100   b  transmits the information to the server  1300  (S 052 ). Based on the information supplied in S 051  from the end user A, the server  1300  generates simulation information regarding a combination of the elements  100  capable of realizing the function desired by the end user B to be realized in the system  10  and/or a combination of the elements  100  utilizing the element  100   p  already possessed by the user and transmits the simulation information to the end user terminal  1100  (S 053 ). The simulation information can include information regarding the element  100   q  which the user does not yet possess (or which is not available) in the combination of the proposed elements  100  or information regarding a function or the like realized when the combination of the elements  100  is performed on the execution environment  2205 . 
     When the function supplied by the combination of the proposed elements  100  satisfies a request, the end user B referring to the simulation information using the end user terminal  1100   b  can purchase the element  100   q  that he or she does not yet possess, as in the foregoing first example. The user who is able to use the element  100   q  can use the desired function in the system  10  by causing the already possessed element  100   p  and the newly purchased element  100   q  to perform the linkage operation in the execution environment  2205 . 
     Third Example 
       FIG.  23    is a diagram illustrating a third example of exchange of information regarding elements according to an embodiment of the present disclosure. In the example illustrated in  FIG.  23   , a server  1300   a  of a service provider mediates the elements  100  (including content) supplied by a software supplier (server  1300   b ), a hardware supplier (server  1300   c ), and a content supplier ( 1300   d ). 
     In the illustrated example, an end user performs simulation using the end user terminal  1100  as in the foregoing first or second example. That is, the end user terminal  1100  transmits information regarding a function desired to be realized in the system  10  by the user and/or the already possessed element  100   p  to the server  1300   a  (S 061 ) and the server  1300   a  transmits simulation information to the end user terminal  1100  (S 062 ). When the function supplied by a combination of the proposed elements  100  satisfies a request, the user referring to the simulation information can purchase the element  100   q  that he or she does not yet possess. At this time, payment of a price from the end user to the service provider is performed through, for example, a settlement process between the end user terminal  1100  and the server  1300   a  (S 063 ). 
     On the other hand, the element  100   q  purchased by the user in the foregoing process can be an element registered in advance from the servers  1300   b  to  1300   d  by the software supplier, the hardware supplier, or the content supplier. For example, the supplier registers the element  100  by transmitting information regarding the specification, the prices, or the like of the element  100  from the servers  1300   b  to  1300   d  to the server  1300   a  (S 064 ). As described above, when the service provider sells the element  100  to the end user, a part of the price paid by the end user is returned from the service provider to the supplier (S 065 ). Methods of returning the price to the supplier can be diverse. For example, a revenue sharing method may be adopted. 
     Fourth Example 
       FIG.  24    is a diagram illustrating a fourth example of exchange of information regarding elements according to an embodiment of the present disclosure. In the example illustrated in  FIG.  24   , an end user A transmits information regarding a function desired to be realized in the system  10  to the server  1300   a  using the end user terminal  1100   a  (S 071 ). For example, the end user A may express the function desired to be realized in a format that is not necessarily associated directly with the constituent elements of the system  10 , such as a photo or text. The server  1300   a  publishes a posting from the end user A to other users including the end user B (S 072 ). The end user B referring to the posting generates a program which can realize the function desired by the end user A, defines the linkage operation of the elements  100  in the system  10 , and transmits the program from the end user terminal  1100   b  to the server  1300   a  (S 073 ). 
     Based on the information supplied from the end user B, the server  1300   a  generates simulation information regarding a combination of the elements  100  which can realize the function desired by the end user B in the system  10  and transmits the simulation information to the end user terminal  1100   a  (S 074 ). At this time, there may be a plurality of users corresponding to the end user B. In this case, a plurality of pieces of simulation information are transmitted from the server  1300   a  to the end user terminal  1100   a.  When the function supplied by a combination of the proposed elements  100  satisfies a request, the user referring to the simulation information can purchase the element  100   q  that he or she does not yet possess. At this time, payment of a price from the end user to the service provider is performed through, for example, a settlement process between the end user terminal  1100  and the server  1300   a.    
     In the illustrated example, as in the foregoing third example, the elements  100  sold by the service provider are registered from the servers  1300   b  to  1300   d  by the suppliers (S 075 ). When the service provider sells the element  100  to the end user A, a part of the price paid by the end user A is returned to the supplier (S 076 ). At this time, when the end user A purchases the element  100  based on the information supplied by the end user B, that is, the combination of the elements  100  proposed by the end user B is adopted, a part of the price paid for the element  100  by the end user A may also be returned from the service provider to the end user B. Methods of returning the price to the end user can be diverse. For example, a revenue sharing method may be adopted. The service provider may sell the elements  100  directly to the end users rather than the mediation as in the foregoing first and second examples. 
     Fifth Example 
       FIG.  25    is a diagram illustrating a fifth example of exchange of information regarding elements according to an embodiment of the present disclosure. In the example illustrated in  FIG.  25   , the end user A uses the end user terminal  1100   a  to register the elements  100  for realizing a certain function in the system  10  and a program defining a linkage operation of the elements in the server  1300   a  of the service provider as a package PKG (S 081 ). As illustrated, the end user A may not necessarily possess the elements or the program corresponding to the package PKG. For example, the end user A may retain the service platform  2200  including the execution environment  2205  and register the package PKG in the sever  1300   a  based on a simulation result executed using the service platform  2200  and the end user terminal  1100 . 
     On the other hand, the end user B refers to information regarding the package PKG registered in the server  1300   a  using the end user terminal  1100   b  (S 082 ) and purchases the package PKG when there is the package PKG capable of realizing a desired function (S 083 ). The service provider sends the elements  100  included in the package PKG to the end user B and causes the program defining the linkage operation to be downloadable (may store the program in a medium and send the element). When the service provider sells the package PKG to the end user B, a part of the price paid by the end user B is returned from the service provider to the end user A (S 084 ). 
       FIG.  26    is an explanatory diagram illustrating an example of a package which is sold in the example of  FIG.  25   . In  FIG.  26   , a baby monitor kit is shown as an example of a product realized by the package PKG. The baby monitor kit includes an acceleration sensor  100   a,  a camera  100   b,  a speaker  100   e,  an LED lamp  100   f,  a microphone  100   g,  and a motor  100   m.  The acceleration sensor  100   a,  the speaker  100   e,  and the microphone  100   g  are embedded in the casing of a pedestal portion. The camera  100   b  is mounted on an upper portion of a post. The LED lamp  100   f  and the motor  100   m  are embedded in a bird-shaped toy and the motor  100   m  moves the wings of the bird. 
     The elements  100  perform a linkage operation according to the program. For example, a remote manipulation is performed with a smartphone or the like so that a baby monitor function of causing the LED lamp  100   f  to blink, causing the motor  100   m  to move the wings, and confirming a form with the camera  100   b  is realized. The program for the linkage operation is downloaded from the server  300  to the elements  100  via the manager  200  for example, when the respective elements  100  are delivered to a source of the end user and the elements are connected to the manager  200  to correspond to an account of the end user. An embodiment of the present disclosure is not limited to the program. For example, content such as a sound material reproduced by the speaker  100   e  is likewise downloaded from the server  300  to the element  100  via the manager  200 . 
     When the end user B purchases the package PKG in the example described above with reference to  FIG.  25   , for example, the casing in which the elements  100  are embedded, as illustrated in  FIG.  26   , is sent from the service provider to the end user B. The casing may be sent in a completed form or may be sent in a form in which it is disassembled into components to be simply assembled. Further, the end user B can download the program from the server  1300   a  through, for example, the end user terminal  1100   b.  As described above, for example, the downloaded program is downloaded from the manager  200  to the elements  100  so that the above-described linkage operation of the elements  100  can be performed. 
     In the embodiment, even the elements  100  sold as the package PKG can perform a linkage operation in a combination of other elements  100  if the program is reset. For example, when the element such as the acceleration sensor  100   a  or the camera  100   b  is detached from the casing and another program is installed via the manager  200  in the foregoing example, a different function from the baby monitor can be realized by performing a linkage operation in a different combination of the elements  100  from that of the foregoing example. Even when the function of the baby monitor is continuously used, the function can be easily upgraded or customized by updating the program installed in each element  100  via the manager  200 . 
     Sixth Example 
       FIG.  27    is a diagram illustrating a sixth example of exchange of information regarding elements according to an embodiment of the present disclosure. In the example illustrated in  FIG.  27   , a hardware manufacturer posts ideas of new elements  100  from a server  1300   e  to the server  1300   a  of the service provider (S 101 ). At this time, the hardware manufacturer may post examples of functions realized using the new elements  100  together. 
     The service provider publishes the posted ideas of the new elements  100  and the examples of the functions realized using the new elements  100  using the server  1300   a.  A plurality of end users browse the published ideas using the end user terminals  1100   a  to  1100   c  (in practice, more end user terminals may be used) (S 102 ). When the end users intend to purchase the elements  100  of the published ideas, the end users express such intention using the end user terminals  1100   a  to  1100   c  (S 103 ). At this time, the end users may express functions desired to be used by the end users in the examples of the functions realized using the new element  100 . 
     Alternatively, the end users may newly propose functions realized using the new elements  100 . The functions newly proposed by the end users may be published along with the ideas of the new elements  100  posted by the hardware manufacturer. Thus, the end user can give the element  100  that he or she wishes to own an added value known as a useful function and the other end users can express an intention to purchase, thereby increasing a probability of the element  100  being manufactured. 
     When the intention to purchase is expressed by a number of end users equal to or greater than a predetermined number (S 104 ), the hardware manufacturer manufactures the new element  100 . In this case, the end user may pay the price when the end user expresses the intention to purchase and a part of the price may be used to manufacture the new element  100 . Alternatively, the end user may purchase the element  100  and pay the price after the element  100  is manufactured. The hardware manufacturer may manufacture, for example, a program realizing a function for which many end users have expressed the intention to use among the functions realized using the new elements  100  along with the new element  100 . 
       FIGS.  28 A and  28 B  are explanatory diagrams illustrating how a structure such as that of the example of  FIG.  27    is superior. 
       FIG.  28 A  illustrates an example of a case in which purchase applicants are collected in units of products. In this case, for example, purchase applicants of a product A including an element  100   x  and an element  100   y  (portions corresponding to the elements  100   x  and  100   y ), a product B including the element  100   x  and an element  100   z  (portions corresponding to the elements  100   x  and  100   z ), and a product C including the element  100   x  and an element  100   w  (portions corresponding to the elements  100   x  and  100   w ) are collected individually. In the illustrated example, it is assumed that it is difficult to manufacture the products unless, for example, 1000 purchasers are collected. Then, since the number of purchasers of all of the products is less than 1000, it is difficult to manufacture the products. 
       FIG.  28 B  illustrates an example of a case in which purchase applicants are collected in units of elements using the same structure as that of the example of  FIG.  27   . In this case, for example, when the elements  100   y,    100   z,  and  100   w  are already circulated, the purchase applicants of the element  100   x  may be collected. Then, a sum of the consumers of the product A (the elements  100   x  and  100   y ), the product B (the elements  100   x  and  100   z ), and the product C (the elements  100   x  and  100   w ) is the number of purchasers of the element  100   x.  Accordingly, even when the number of consumers of each product is less than 1000, the number of purchasers of the element  100   x  which is the sum of the consumers of the products exceeds 1000, and thus the element  100   x  can be manufactured. 
     Seventh Example 
       FIG.  29    is a diagram illustrating a seventh example of exchange of information regarding elements according to an embodiment of the present disclosure. In the example illustrated in  FIG.  29   , the end user A posts ideas of new elements  100  to the server  1300   a  of the service provider using the end user terminal  1100   a  (S 121 ). At this time, the end user A may post examples of functions realized using the new elements  100  together. 
     The service provider publishes the posted ideas of the new elements  100  and the examples of the functions realized using the new elements  100  using the server  1300   a.  A plurality of end users browse the published ideas using the end user terminals  1100   b  and  1100   c  (in practice, more end user terminals may be used) (S 122 ). When the end users intend to purchase the elements  100  of the published ideas, the end users express such intention using the end user terminals  1100   a  to  1100   c  (S 123 ). At this time, the end users may express functions desired to be used by the end users in the examples of the functions realized using the new element  100 . Alternatively, the end users may newly propose functions realized using the new elements  100  and the suggested functions may be published along with the ideas of the new elements  100 . 
     When a number of end users equal to or greater than a predetermined number express an intention to purchase the new element  100 , manufacture thereof is entrusted to the hardware manufacturer (S 124 ). In this case, the end user may pay the price when the end user expresses the intention to purchase and a part of the price may be used to manufacture the new element  100 . Alternatively, the end user may purchase the element  100  and pay the price after the element  100  is manufactured. The hardware manufacturer may manufacture, for example, a program realizing a function for which many end users have expressed the intention to use among the functions realized using the new elements  100  along with the new element  100 . The manufactured elements  100  or program are supplied to the end users via the service provider (S 125 ). 
     At this time, parts of the prices paid by the other end users purchasing the elements  100  are returned to the end user A supplying the ideas of the elements  100  (S 126 ). The server  1300   a  of the service provider may decide a return ratio of the price to the end user A according to creativity of the idea, contribution of a case in which there are a plurality of initiators, or the like. 
     2-4. Conclusion of Embodiment 
     An embodiment of the present disclosure described above can be expressed as follows. 
     (1) A method including supplying a hardware or software element, supplying a program causing the element to perform a linkage operation, and realizing a function by causing the element disposed in an execution environment to perform the linkage operation according to the program, wherein the element and the program are able to be mutually independently supplied. 
     In the system  10  according to the embodiments, the software or hardware elements  100  are supplied. The programs (for example, the program defining the linkage operation between the elements  100 , as conceptually shown in  FIGS.  12  to  17   ) causing the elements to perform the linkage operation can be mutually independently supplied separately from the elements  100 . 
     Thus, by changing the combination of the elements  100  or changing the program in the combination of the elements  100 , it is possible to realize a wide variety of functions. Accordingly, a function more suitable for the user can be easily realized. For example, as illustrated in the example of  FIG.  21   , the end user can additionally purchase the elements  100  in sequence, as necessary. A simulation realizing a certain function when the elements  100  are additionally purchased may be supplied to, for example, the server  1300  administered by the service provider. 
     (2) The supplying of the program may include uploading a program generated by a first end user to a server, and downloading, by a second end user different from the first end user, the uploaded program from the server. The program causing the elements  100  to perform the linkage operation in the system  10  can be generated by the end user. In the execution environment of the system  10 , the end user may change the program or a GUI for generating a new program may be supplied. For example, as illustrated in the example of  FIG.  22   , the program generated by a certain end user may be uploaded to the server  1300  of the service provider and the program may be downloaded by another end user to be used for the linkage operation of the elements  100 . 
     (3) The supplying of the element may include uploading information regarding the element manufactured by suppliers to a server of a mediator, and purchasing, by an end user, the element with reference to the uploaded information regarding the element. 
     The provider of the service in the embodiment may include the supplier of the hardware or software element and the mediator mediating circulation of the element. For example, as illustrated in the example of  FIG.  23   , the mediator publishes information regarding the elements supplied by the suppliers to the end users, so that the end users can easily receive various elements. The suppliers can also supply the elements to many end users. 
     (4) The supplying of the program may include uploading information regarding a function that a first end user desires to realize to a server, uploading, to the server, a program that is generated by a second end user different from the first end user with reference to the uploaded information regarding the function and is capable of realizing the function, and downloading, by the first end user, the uploaded program from the server. For example, as illustrated in the example of  FIG.  24   , a new program may be generated by an end user based on information which is supplied from other end users regarding a function desired to be realized. In this case, when another end user purchases the new element  100  to realize the function according to the new program, a part of the price of the element  100  may also be returned to the end user generating the new program. 
     (5) The supplying of the element and the supplying of the program may include purchasing, by a second end user different from a first end user, a package of a program generated by the first end user and the element associated with the program. As described above, the elements  100  and the program may be mutually independently supplied. However, for example, as illustrated in the example of  FIG.  25   , the elements may be packaged and supplied. Even in this case, for example, when the function of a product supplied as the package is not necessary, a separate function necessary in the element  100  can be realized by changing the combination of the elements  100  or changing the program for the linkage operation. 
     (6) The package may include the hardware element to be delivered, and the software element and the program to be stored in a medium and delivered or to be downloaded. For example, as illustrated in the example of  FIG.  26   , the package can include the hardware and software elements  100  and the program causing the elements  100  to perform the linkage operations. For example, the hardware elements may be delivered, and the software elements and the program may be stored in a medium to be delivered or downloaded. In this way, the method of sending the elements  100  or the program from the service provider to the source of the end user may be diverse and a plurality of supply methods may be used together even in the same package. 
     (7) The supplying of the element may include uploading, by a manufacturer of the element, a proposal of a new element to a server, transmitting, by end users referring to the proposal, expressions of intention to purchase the new element to the server, manufacturing, by the manufacturer, the new element when the predetermined number of the expressions of the intention are transmitted, and selling the manufactured element to the end users transmitting the expressions of the intention. For example, as illustrated in the example of  FIG.  27   , the manufacturers of the elements  100  can collect purchase applicants of the new elements  100  by uploading the proposals of new elements  100  to the server  1300 . The manufacturers can develop the new elements  100  at low risk by manufacturing the new elements  100  under the condition that a predetermined number of purchase applications are collected. 
     (8) A plurality of different functions may be realizable by combining the new element with another existing element. For example, as described with reference to  FIGS.  28 A and  28 B , when a plurality of different functions (corresponding to a plurality of different products) can be realized by combining the new element  100   x  with the existing elements  100   y,    100   z,  and  100   w  or the like, a wide range of purchase applicants can be collected by setting the elements  100  as units, as described above. 
     (9) The supplying of the element may include uploading, by an end user, a proposal of a new element to a server, transmitting, by end users referring to the proposal, expressions of intention to purchase the new element to the server, manufacturing, by a manufacturer of the element, the new element when the predetermined number of the expressions of the intention are transmitted, and selling the manufactured element to the end users transmitting the expressions of the intention. For example, as described with reference to  FIG.  29   , the new element may be proposed not by the manufacturer but on an end user side. In this case, when a predetermined number of users approving of the proposal are collected, the service provider provides the manufacturer with a request to manufacture the element  100  so that the element  100  of which a demand is higher can be newly added. 
     3. Hardware Configuration 
     Next, a hardware configuration of an information processing apparatus according to an embodiment of the present disclosure will be described with reference to  FIG.  30   .  FIG.  30    is a block diagram illustrating a hardware configuration example of an information processing apparatus according to an embodiment of the present disclosure. An information processing apparatus  900  illustrated in the drawing can realize, for example, the element, the manager, the server, the UI device, an end user terminal and/or the server device in the above-described embodiments. 
     The information processing apparatus  900  includes a CPU (Central Processing Unit)  901 , a ROM (Read Only Memory)  903 , and a RAM (Random Access Memory)  905 . In addition, the information processing apparatus  900  may include a host bus  907 , a bridge  909 , an external bus  911 , an interface  913 , an input device  915 , an output device  917 , a storage device  919 , a drive  921 , a connection port  923 , and a communication device  925 . Further, the information processing apparatus  900  may include an imaging device  933  and a sensor  935  as necessary. The information processing apparatus  900  may include a processing circuit such as a DSP (Digital Signal Processor) or ASIC (Application Specific Integrated Circuit), alternatively or in addition to the CPU  901 . 
     The CPU  901  serves as an operation processor and a controller, and controls all or some operations in the information processing apparatus  900  in accordance with various programs recorded in the ROM  903 , the RAM  905 , the storage device  919  or a removable recording medium  927 . The ROM  903  stores programs and operation parameters which are used by the CPU  901 . The RAM  905  temporarily stores program which are used in the execution of the CPU  901  and parameters which are appropriately modified in the execution. The CPU  901 , ROM  903 , and RAM  905  are connected to each other by the host bus  907  configured to include an internal bus such as a CPU bus. In addition, the host bus  907  is connected to the external bus  911  such as a PCI (Peripheral Component Interconnect/Interface) bus via the bridge  909 . 
     The input device  915  is a device which is operated by a user, such as a mouse, a keyboard, a touch panel, buttons, switches and a lever. The input device  915  may be, for example, a remote control unit using infrared light or other radio waves, or may be an external connection device  929  such as a portable phone operable in response to the operation of the information processing apparatus  900 . Furthermore, the input device  915  includes an input control circuit which generates an input signal on the basis of the information which is input by a user and outputs the input signal to the CPU  901 . By operating the input device  915 , a user can input various types of data to the information processing apparatus  900  or issue instructions for causing the information processing apparatus  900  to perform a processing operation. 
     The output device  917  includes a device capable of visually or audibly notifying the user of acquired information. The output device  917  may include a display device such as an LCD (Liquid Crystal Display), a PDP (Plasma Display Panel), and an organic EL (Electro-Luminescence) displays, an audio output device such as a speaker or a headphone, and a peripheral device such as a printer. The output device  917  may output the results obtained from the process of the information processing apparatus  900  in a form of a video such as text or an image, and an audio such as voice or sound. 
     The storage device  919  is a device for data storage which is configured as an example of a storage unit of the information processing apparatus  900 . The storage device  919  includes, for example, a magnetic storage device such as a HDD (Hard Disk Drive), a semiconductor storage device, an optical storage device, or a magneto-optical storage device. The storage device  919  stores programs to be executed by the CPU  901 , various data, and data obtained from the outside. 
     The drive  921  is a reader/writer for the removable recording medium  927  such as a magnetic disk, an optical disk, a magneto-optical disk, or a semiconductor memory, and is embedded in the information processing apparatus  900  or attached externally thereto. The drive  921  reads information recorded in the removable recording medium  927  attached thereto, and outputs the read information to the RAM  905 . Further, the drive  921  writes in the removable recording medium  927  attached thereto. 
     The connection port  923  is a port used to directly connect devices to the information processing apparatus  900 . The connection port  923  may include a USB (Universal Serial Bus) port, an IEEE1394 port, and a SCSI (Small Computer System Interface) port. The connection port  923  may further include an RS-232C port, an optical audio terminal, an HDMI (registered trademark) (High-Definition Multimedia Interface) port, and so on. The connection of the external connection device  929  to the connection port  923  makes it possible to exchange various data between the information processing apparatus  900  and the external connection device  929 . 
     The communication device  925  is, for example, a communication interface including a communication device or the like for connection to a communication network  931 . The communication device  925  may be, for example, a communication card for a wired or wireless LAN (Local Area Network), Bluetooth (registered trademark), WUSB (Wireless USB) or the like. In addition, the communication device  925  may be a router for optical communication, a router for ADSL (Asymmetric Digital Subscriber Line), a modem for various kinds of communications, or the like. The communication device  925  can transmit and receive signals to and from, for example, the Internet or other communication devices based on a predetermined protocol such as TCP/IP. In addition, the communication network  931  connected to the communication device  925  may be a network or the like connected in a wired or wireless manner, and may be, for example, the Internet, a home LAN, infrared communication, radio wave communication, satellite communication, or the like. 
     The imaging device  933  is a device that generates an image by imaging a real space using an image sensor such as a charge-coupled device (CCD) or a complementary metal-oxide-semiconductor (CMOS) sensor, as well as various members such as one or more lenses for controlling the formation of a subject image on the image sensor, for example. The imaging device  933  may be a device that takes still images, and may also be a device that takes moving images. 
     The sensor  935  is any of various sensors such as an acceleration sensor, a gyro sensor, a geomagnetic sensor, an optical sensor, or a sound sensor, for example. The sensor  935  acquires information regarding the state of the information processing apparatus  900 , such as the orientation of the case of the information processing apparatus  900 , as well as information regarding the environment surrounding the information processing apparatus  900 , such as the brightness or noise surrounding the information processing apparatus  900 , for example. The sensor  935  may also include a Global Positioning System (GPS) sensor that receives GPS signals and measures the latitude, longitude, and altitude of the apparatus. 
     The foregoing thus illustrates an exemplary hardware configuration of the information processing apparatus  900 . Each of the above components may be realized using general-purpose members, but may also be realized in hardware specialized in the function of each component. Such a configuration may also be modified as appropriate according to the technological level at the time of the implementation. 
     4. Supplement 
     The embodiments of the present disclosure may include the information processing apparatus (end user terminal and/or server device), the system, the information processing method executed in the information processing apparatus or the system, the program for causing the information processing apparatus to function, and the non-transitory tangible media having the program recorded thereon, which have been described above, for example. 
     It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and alterations may occur depending on design requirements and other factors insofar as they are within the scope of the appended claims or the equivalents thereof. 
     In addition, the effects described in the present specification are merely illustrative and demonstrative, and not limitative. In other words, the technology according to the present disclosure can exhibit other effects that are evident to those skilled in the art along with or instead of the effects based on the present specification. 
     Additionally, the present technology may also be configured as below. 
     (1) 
     A system comprising: circuitry configured to store functional information indicating a capability of each of a plurality of elements located remotely from the system; identify a function capable of being performed by linking a plurality of the elements based on the stored functional information; and transmit information corresponding to the identified function capable of being performed by linking the plurality of elements to a first device remote from the system. 
     (2) 
     The system of (1), wherein the circuitry is configured to: generate a program corresponding to the identified function capable of being performed by linking the plurality of the elements; and transmit the program to the first device. 
     (3) 
     The system of any of (1) to (2), wherein the circuitry is configured to: receive information corresponding to a desired function to be performed by linking a subset of the plurality of the elements; generate information indicating the subset of the plurality of elements necessary to perform the desired function; and transmit the generated information to the first device. 
     (4) 
     The system of any of (1) to (3), wherein the circuitry is configured to: receive information identifying a function capable of being performed by linking a subset of the plurality of elements from the first device; and transmit information identifying the function capable of being performed linking the subset of the plurality of elements to a second device remote from the system. 
     (5) 
     The system of (4), wherein the circuitry is configured to: generate a program to be executed to perform the function capable of being performed by linking the subset of the plurality of elements; and transmit the program to be executed to the second device. 
     (6) 
     The system of any of (1) to (5), wherein the circuitry is configured to: receive, from the first device, information corresponding to a desired function to be performed and a subset of the plurality of elements associated with the first device; identify at least a first element not associated with the first device necessary to perform the desired function; retrieve a cost associated with acquiring the at least first element; and transmit the cost associated with acquiring the at least first element to the first device. 
     (7) 
     The system of (6), wherein the circuitry is configured to retrieve the cost associated with acquiring the at least first element from a second device remote from the system. 
     (8) 
     The system of any of (1) to (7), wherein the circuitry is configured to: receive, from the first device, information corresponding to a desired function to be performed by linking a subset of the plurality of elements associated with the first device; share information corresponding to the desired function with a second device remote from the system; and receive, from the second device, information indicating a linkage between the subset of the plurality of elements to perform the desired function. 
     (9) 
     The system of any of (1) to (8), wherein the circuitry is configured to: receive, from the first device, information corresponding to a desired function to be performed; share information corresponding to the desired function with a second device remote from the system; and receive, from the second device, information identifying a subset of the plurality of elements to perform the desired function and a linkage between the subset of the plurality of elements. 
     (10) 
     The system of (9), wherein the circuitry is configured to: identify that at least one of the subset of the plurality of elements is purchased based on the information received from the second device; identify a cost associated with the at least one of the subset of the plurality of elements; and reimburse a user associated with the second device with at least a portion of the cost associated with the at least one of the subset of the plurality of elements. 
     (11) 
     The system of any of (1) to (10), wherein the circuitry is configured to: receive, from a second device remote from the system, information identifying a function capable of being performed by linking a subset of the plurality of elements; identify that the first device purchased at least a one of the subset of the plurality of elements based on the information identifying the first function received from the second device; and reimburse a user associated with the second device with at least a portion of the cost associated with the at least one of the subset of the plurality of elements. 
     (12) 
     The system of any of (1) to (11), wherein the circuitry is configured to receive, from a second device remote from the system, a plurality of functions capable of being performed by linking respective subsets of the plurality of elements. 
     (13) 
     The system of any of (1) to (12), wherein the circuitry is configured to transmit, to the first device, the plurality of functions capable of being performed by linking respective subsets of the plurality of elements. 
     (14) 
     The system of any of (1) to (13), wherein the circuitry is configured to: store an application configured to link the subset of the plurality of elements to perform the function; and transmit the application to the first device. 
     (15) 
     The system of (14), wherein the application includes a user interface configured to be displayed by the first device and accept a user input to configure the linking between the plurality of elements. 
     (16) 
     The system of any of (1) to (15), wherein the system is a server. 
     (17) 
     The system of any of (1) to (15), wherein the system is a plurality of servers. 
     (18) 
     The system of any of (1) to (18), wherein the plurality of elements are each software elements configured to be communicatively coupled to the first device. 
     (19) 
     The system of any of (1) to (18), wherein the plurality of elements are each hardware elements configured to be communicatively coupled to the first device. 
     (20) 
     A method performed by an information processing system, the method comprising: identifying a function capable of being performed by linking a plurality of elements located remotely from the information processing system based on stored functional information indicating a capability of each of the plurality of elements; and transmitting information corresponding to the identified function capable of being performed by linking the plurality of elements to a first device remote from the information processing system. 
     (21) 
     A non-transitory computer readable medium including computer program instructions, which when executed by an information processing system, cause the information processing system to: identify a function capable of being performed by linking a plurality of elements located remotely from the system based on stored functional information indicating a capability of each of the plurality of elements; and transmit information corresponding to the identified function capable of being performed by linking the plurality of elements to a first device remote from the system. 
     (22) 
     A method including: 
     supplying a hardware or software element; 
     supplying a program causing the element to perform a linkage operation; and 
     realizing a function by causing the element disposed in an execution environment to perform the linkage operation according to the program, 
     wherein the element and the program are able to be mutually independently supplied. 
     (23) 
     The method according to (22), wherein the supplying of the program includes 
     uploading a program generated by a first end user to a server, and 
     downloading, by a second end user different from the first end user, the uploaded program from the server. 
     (24) 
     The method according to (22) or (23), wherein the supplying of the element includes 
     uploading information regarding the element manufactured by suppliers to a server of a mediator, and 
     purchasing, by an end user, the element with reference to the uploaded information regarding the element. 
     (25) 
     The method according to any one of (22) to (24), wherein the supplying of the program includes 
     uploading information regarding a function that a first end user desires to realize to a server, 
     uploading, to the server, a program that is generated by a second end user different from the first end user with reference to the uploaded information regarding the function and is capable of realizing the function, and 
     downloading, by the first end user, the uploaded program from the server. 
     (26) 
     The method according to any one of (22) to (25), wherein the supplying of the element and the supplying of the program include 
     purchasing, by a second end user different from a first end user, a package of a program generated by the first end user and the element associated with the program. 
     (27) 
     The method according to (26), wherein the package includes the hardware element to be delivered, and the software element and the program to be stored in a medium and delivered or to be downloaded. 
     (28) 
     The method according to any one of (22) to (27), wherein the supplying of the element includes 
     uploading, by a manufacturer of the element, a proposal of a new element to a server, transmitting, by end users referring to the proposal, expressions of intention to purchase the new element to the server, 
     manufacturing, by the manufacturer, the new element when the predetermined number of the expressions of the intention are transmitted, and 
     selling the manufactured element to the end users transmitting the expressions of the intention. 
     (29) 
     The method according to (28), wherein a plurality of different functions are realizable by combining the new element with another existing element. 
     (30) 
     The method according to any one of (22) to (29), wherein the supplying of the element includes 
     uploading, by an end user, a proposal of a new element to a server, 
     transmitting, by end users referring to the proposal, expressions of intention to purchase the new element to the server, 
     manufacturing, by a manufacturer of the element, the new element when the predetermined number of the expressions of the intention are transmitted, and 
     selling the manufactured element to the end users transmitting the expressions of the intention. 
     (31) 
     A system including: 
     a terminal device used by an end user; and 
     a server administered by a service provider, 
     wherein the terminal device and the server perform communication to supply, from the provider to the end user, a hardware or software element and a program causing the element to perform a linkage operation, 
     wherein a function is realized by causing the element disposed in an execution environment to perform the linkage operation according to the program, and 
     wherein the element and the program are able to be mutually independently supplied. 
     REFERENCE SIGNS LIST 
       10  system 
       100  element 
       110  communication unit 
       120  control unit 
       130  function unit 
       140  power unit 
       200  manager 
       210  communication unit 
       220  control unit 
       230  storage unit 
       300  server 
       310  communication unit 
       320  control unit 
       330  storage unit 
       400  UI device 
       410  communication unit 
       420  control unit 
       430  input and output unit 
       1100  end user terminal 
       1300  server 
       2200  service platform