JP7419286B2 - Information processing device, information processing method, and information processing program - Google Patents

Description

The present invention relates to an information processing device, an information processing method, and an information processing program.

BACKGROUND ART Techniques have been proposed to provide a context awareness platform for realizing a ubiquitous society (for example, see Patent Document 1). Such technology is for sharing various context data obtained by various sensor devices, including computers, that are omnipresent in real space.

Special table 2017-503371 publication

However, the above-mentioned conventional techniques have room for further improvement in knowing the location of desired context data and acquiring it.

Specifically, for example, in an ad hoc network formed by a group of multiple devices, when a device desires arbitrary context data, it may not be known which device in the network holds that data in the first place. be.

The present application has been made in view of the above, and aims to provide an information processing device, an information processing method, and an information processing program that can locate and acquire desired context data.

The information processing device according to the present application includes an inquiry section and an acquisition section. When the inquiry unit is a first device that desires arbitrary context data, the inquiry unit inquires about the context data to one or more second devices and one or more third devices other than the second device. Inquire about the location by broadcasting. The acquisition unit is configured to acquire at least one of the second devices that responded when there is a response from the second device indicating that the context data is held in response to the inquiry by the inquiry unit. The context data is obtained from. In addition, when there are responses from a plurality of second devices, the acquisition unit is configured to set a predetermined criterion that includes at least the newness of the context data and the reliability of the second devices based on past communication history. The second device is selected along the following lines.

According to one aspect of the embodiment, it is possible to know the location of desired context data and obtain it.

FIG. 1 is a diagram illustrating an example of information processing according to an embodiment. FIG. 2 is a diagram illustrating a configuration example of an information processing system according to an embodiment. FIG. 3 is a block diagram illustrating a configuration example of a terminal device according to an embodiment. FIG. 4 is a process explanatory diagram (part 1) of the provision process according to the modification. FIG. 5 is a process explanatory diagram (part 2) of the provision process according to the modification. FIG. 6 is a processing sequence (part 1) executed by the information processing system according to the embodiment. FIG. 7 is a processing sequence (Part 2) executed by the information processing system according to the embodiment. FIG. 8 is a hardware configuration diagram showing an example of a computer that implements the functions of the terminal device according to the embodiment.

DESCRIPTION OF THE PREFERRED EMBODIMENTS An information processing apparatus, an information processing method, and an information processing program according to the present application (hereinafter referred to as "embodiments") will be described in detail below with reference to the drawings. Note that the information processing apparatus, information processing method, and information processing program according to the present application are not limited to this embodiment. Moreover, each embodiment can be combined as appropriate within the range that does not conflict with the processing contents. Further, in each of the embodiments below, the same parts are given the same reference numerals, and redundant explanations will be omitted.

[1. An example of information processing]
First, an example of information processing according to the embodiment will be described using FIG. 1. FIG. 1 is a diagram illustrating an example of information processing according to an embodiment.

In FIG. 1, when a terminal device 10-1, which is an example of an information processing device included in the information processing system 1 according to the embodiment, is a first device that desires arbitrary context data, one or more second and one or more third devices other than the second device, by broadcasting the location of the context data, and in response to the inquiry, the second device receives a response indicating that the second device holds the context data. An example will be shown in which, if there is a response, the process of acquiring context data from at least one of the second devices that responded is executed.

As shown in FIG. 1, the information processing system 1 according to the embodiment includes a plurality of terminal devices 10-1, 10-2, . . . 10-n. As shown in the figure, the terminal device 10-1 corresponds to an example of a first device. Further, the terminal device 10-2 corresponds to an example of a second device. Furthermore, the terminal device 10-n corresponds to an example of a third device that is a device other than the first device and the second device.

The terminal devices 10-1, 10-2, . . . 10-n are provided to enable peer-to-peer wireless communication, and can form an ad hoc network as a context environment. Note that, hereinafter, when there is no need to particularly distinguish between the terminal devices 10-1, 10-2, .

The terminal device 10 is an example of a sensor device having various sensors. For example, the terminal device 10 is a terminal device that has a G sensor, a gyro sensor, a GPS (Global Positioning System) sensor, etc., and is used by a user for various information processing via an HMI (Human Machine Interface). be.

In such a case, the terminal device 10 is, for example, an information processing device such as a mobile phone including a smartphone, a tablet terminal, a desktop PC, a notebook PC, or a PDA (Personal Digital Assistant). The terminal device 10 also includes a wearable device that is a glasses-type or watch-type information processing device. It also includes computers such as servers and workstations. Further, the terminal device 10 may be a game machine or the like capable of so-called StreetPass communication (registered trademark).

Further, for example, the terminal device 10 is a variety of sensor devices that specifically sense video, audio, temperature, humidity, atmospheric pressure, biological information, and the like.

Here, a case will be considered in which the first device, the terminal device 10-1, wants to acquire arbitrary context data from any one of the terminal devices 10-2, . . . , 10-n in the ad hoc network. Further, it is assumed that the context data desired by the terminal device 10-1 is held as context information by the second device, the terminal device 10-2.

Here, in an ad hoc network, when a certain device desires arbitrary context data, it may not be known which device in the network holds the data in the first place.

Therefore, in the information processing method according to the embodiment, when a first device desires arbitrary context data, one or more second devices and one or more third devices other than the second device , inquire by broadcasting the location of the context data, and if there is a response from the second device indicating that it holds the context data in response to the inquiry, from at least one of the second devices that responded. We decided to obtain context data.

Specifically, as shown in FIG. 1, in the information processing method according to the embodiment, the terminal device 10-1 first broadcasts an inquiry about the location of data to the terminal devices 10-2, ... 10-n. (Step S1). Such an inquiry may be, for example, meta information simply indicating the type of desired data.

Then, if the terminal devices 10-2,...10-n hold the data corresponding to the inquiry, they send a data holding notification indicating that they hold the data to the terminal device 10-n which is the broadcast source. 1 (step S2).

Then, the terminal device 10-1 that received the response establishes a connection by peer-to-peer communication with the terminal device 10-2 that returned the response (step S3). Then, the terminal device 10-1 obtains desired context data from the terminal device 10-2 via this connection (step S4).

By following such a series of steps, the terminal device 10-1 can know the location of desired context data and acquire it.

Note that the terminal device 10-n, which has a history of communication with the terminal device 10-2, responds to the inquiry in step S1 that it does not hold the context data desired by the terminal device 10-1; Information regarding the device 10-2 may be provided to the terminal device 10-1.

Furthermore, in response to the inquiry in step S1, the terminal device 10-n, which also has a communication history with the terminal device 10-2, responds to the terminal device 10-n even though it owns the context data desired by the terminal device 10-1. If consent is required, information indicating this may be provided to the terminal device 10-1. Such a modification will be described later in the explanation using FIGS. 4 and 5.

In addition, the terminal device 10 that is physically fixed in a facility such as a store is registered on the system as a device that holds definite location information, and for example, the terminal device 10-1 is registered with the location information. If context data is desired, the context data may be unconditionally acquired from the device.

Additionally, the second device refers to one or more devices that maintain context data desired by the first device. Therefore, when the terminal device 10-1, which is the first device, receives data retention notification responses from a plurality of terminal devices 10-2, one of the terminal devices 10-1 that received the responses 2, or from two or more terminal devices 10-2. The terminal device 10-1 discards the terminal device 10-2 according to predetermined criteria, for example, based on the freshness of the context data, the reliability of the terminal device 10-2 based on past communication history, etc. You can choose.

Similarly, a third device refers to one or more devices other than the first device and the second device. Therefore, when the terminal device 10-1, which is the first device, receives information regarding the terminal device 10-2 from a plurality of terminal devices 10-n, the terminal device 10-1, which is the first device, receives information about the terminal device 10-2 from a plurality of terminal devices 10-n. The process may proceed according to the information provided from the terminal device 10-n, or the process may proceed according to the information provided from two or more terminal devices 10-n. The terminal device 10-1 can select one terminal device 10-n according to a predetermined criterion, for example, based on the reliability of the terminal device 10-n based on past communication history and the like.

As described above, in the information processing method according to the embodiment, when the first device desires arbitrary context data, one or more second devices and one or more third devices other than the second device A device is inquired about the location of the context data by broadcasting, and if there is a response from the second device indicating that it holds the context data in response to the inquiry, at least one of the second devices that responded Get context data from either.

Therefore, according to the information processing method according to the embodiment, the location of desired context data can be known and acquired.

Hereinafter, the information processing system 1 including the information processing apparatus that performs the above information processing will be described in detail.

[2. Configuration of information processing system 1]
FIG. 2 is a diagram showing a configuration example of the information processing system 1 according to the embodiment. As illustrated in FIG. 2, the information processing system 1 according to the embodiment includes a plurality of terminal devices 10-1, 10-2, ... 10-n, and a server device 100.

These various devices are connected via a network N so that they can communicate by wire or wirelessly. The network N is a communication network such as a LAN (Local Area Network), a WAN (Wide Area Network), a telephone network (mobile phone network, fixed telephone network, etc.), a local IP (Internet Protocol) network, the Internet, or the like. The network N may include a wired network or a wireless network.

Furthermore, as described above, as indicated by the broken line arrows in FIG. 2, the terminal devices 10-1, 10-2, . . . 10-n are provided to enable peer-to-peer wireless communication. Since the terminal device 10 has already been explained, detailed explanation thereof will be omitted here.

The server device 100 is an information processing device that provides various services to users. The service provided by the server device 100 is, for example, a service that provides various information via various applications and browsers installed on the terminal device 10. In addition to search services, the services provided include, for example, news provision services, auction services, weather forecast services, shopping services, financial transaction (stock trading, etc.) services, route search services, map provision services, travel services, and food and beverage services. Store introduction services, blog services, etc. may also be included.

Furthermore, the server device 100 is capable of identifying and authenticating the terminal device 10 and providing various services depending on the ad hoc network in which the corresponding terminal device 10 exists, that is, the context environment.

[3. Terminal device 10]
Next, a configuration example of the terminal device 10 will be described using FIG. 3. FIG. 3 is a block diagram showing a configuration example of the terminal device 10 according to the embodiment. Note that FIG. 3 shows only the components necessary for explaining the terminal device 10, and the description of general components is omitted.

As shown in FIG. 3, the terminal device 10 includes a communication section 11, a sensor section 12, a storage section 13, and a control section 14. Note that the terminal device 10 includes an input section (for example, a keyboard, a mouse, etc.) that receives various operations from a user using the terminal device 10, a display section (for example, a liquid crystal display, etc.) for displaying display information, etc. , a speaker section for outputting audio information, etc. may be included.

(About communication department 11)
The communication unit 11 is realized by, for example, a NIC (Network Interface Card). The communication unit 11 is connected to the network N by wire or wirelessly, and transmits and receives information to and from the server device 100 via the network N.

Further, the communication unit 11 is connected to other terminal devices 10 so as to be able to communicate peer-to-peer wirelessly, and transmits and receives information to and from the other terminal devices 10 . Note that as the wireless communication method, Wi-Fi (registered trademark), Bluetooth (registered trademark), UWB (Ultra Wide Band), NFC (Near Field Communication), etc. can be used.

(About the sensor section 12)
The sensor unit 12 is installed in the terminal device 10 and includes one or more sensors that acquire sensing data indicating various contexts in a space where the terminal device 10 exists.

(About storage unit 13)
The storage unit 13 is realized by, for example, a semiconductor memory element such as a RAM (Random Access Memory) or a flash memory, or a storage device such as a hard disk or an optical disk. In the example of FIG. It has a context information storage section 13a and a history information storage section 13b.

(Context information storage unit 13a)
The context information storage unit 13a stores context data from the sensor unit 12 acquired by an acquisition unit 14e, which will be described later, and context data from other terminal devices 10.

(History information storage unit 13b)
The history information storage unit 13b stores information regarding the history of communications with other terminal devices 10. The information regarding the communication history includes information regarding context data held by the communication partner, such as the communication date and time, the communication partner, and the type of context data included in the communication content.

(About the control unit 14)
The control unit 14 is a controller, and includes various programs (an example of an information processing program) stored in a storage device inside the terminal device 10 by, for example, a CPU (Central Processing Unit) or an MPU (Micro Processing Unit). (equivalent to ) is realized by executing the RAM as a work area. Further, the control unit 14 is, for example, a controller, and is realized by an integrated circuit such as an ASIC (Application Specific Integrated Circuit) or an FPGA (Field Programmable Gate Array).

As shown in FIG. 3, the control unit 14 includes an inquiry unit 14a, an acquisition unit 14b, a communication control unit 14c, and a provision unit 14d, and realizes or executes information processing functions and operations described below. do. Note that the internal configuration of the control unit 14 is not limited to the configuration shown in FIG. 3, and may be any other configuration as long as it is capable of performing information processing to be described later. Further, the connection relationship between the respective processing units included in the control unit 14 is not limited to the connection relationship shown in FIG. 3, and may be other connection relationships.

When the control unit 14 is a first device that desires arbitrary context data, the control unit 14 instructs one or more second devices and one or more third devices other than the second device about the location of the context data. An inquiry is made by broadcasting, and when there is a response from the second device indicating that the second device holds context data in response to the inquiry, the context data is acquired from at least one of the second devices that responded.

(About the inquiry section 14a)
When the terminal device 10 is the above-mentioned first device, the inquiry section 14a sends the desired context data to the terminal devices 10-2, ... 10-n in the ad hoc network via the communication section 11. Broadcast meta information to inquire about location.

(About the acquisition unit 14b)
The acquisition unit 14b acquires, via the communication unit 11, a response to the inquiry by the inquiry unit 14a. Further, when the response includes a data retention notification indicating that the desired context data is retained, the acquisition unit 14b transmits the communication between the communication control unit 14c and the terminal device 10 that responded with the notification. establish a connection using peer-to-peer communication.

The acquisition unit 14b also acquires desired context data from the corresponding terminal device 10 via the established connection.

(About the communication control unit 14c)
When the response to the inquiry by the inquiry unit 14a acquired by the acquisition unit 14b includes a notification of data retention, the communication control unit 14c performs peer-to-peer communication with the terminal device 10 that responded to the notification. Establish a connection.

Furthermore, when the acquisition unit 14b acquires desired context data from the corresponding terminal device 10 via the established connection, the communication control unit 14c controls the peer-to-peer communication established with the terminal device 10.・Cancel the connection by peer communication.

(About the providing section 14d)
When the terminal device 10 is the above-mentioned second device, the providing unit 14d provides the first device with context data that it holds and that the first device desires.

Further, when the terminal device 10 is the third device described above, the providing unit 14d transmits information about the second device that does not hold the context data itself but that holds the context data desired by the first device to the communication unit. 11 to the first device.

Further, when the terminal device 10 is the third device described above, the providing unit 14d holds the context data desired by the first device, but if the consent of the second device is required, the providing unit 14d stores the context data desired by the first device. You may also provide information that consent is required.

Such a modification will be specifically shown. FIG. 4 is a process explanatory diagram (part 1) of the provision process according to the modification. Further, FIG. 5 is a process explanatory diagram (part 2) of the provision process according to the modification.

As shown in FIG. 4, it is assumed that there is a communication history between the terminal device 10-2, which is the second device, and the terminal device 10-n, which is the third device (step S0). It is also assumed that the communication history includes history regarding StreetPass communication.

In such a case, when the terminal device 10-n receives the above-mentioned broadcast inquiry from the terminal device 10-1, which is the first device (step S1), the terminal device 10-n responds based on its own history information. , information regarding the second device can be provided to the terminal device 10-1 (step S5).

Such information regarding the second device includes, for example, identification information of the second device, address information such as an IP address, the type of context data held by the second device, and the fact that the device simply passed by the second device. It will be done.

Then, the terminal device 10-1 that has received such information requests the terminal device 10-2, which is the second device, to provide desired context data, and if consent is obtained, the terminal device 10-2 -2 through peer-to-peer communication. Then, desired context data is acquired from the terminal device 10-2.

Also, in FIG. 5, as in FIG. 4, it is assumed that there is a communication history between the terminal device 10-2, which is the second device, and the terminal device 10-n, which is the third device (step S0). . Further, the terminal device 10-n holds context data desired by the terminal device 10-1, which is the first device, but provision thereof requires consent from the second device.

In such a case, when the terminal device 10-n receives the above-mentioned broadcast inquiry from the terminal device 10-1 (step S1), the terminal device 10-n informs the terminal device 10-1 that it is Although the context data is held, information can be provided that the consent of the second device is required (step S6).

Such provided information includes, for example, identification information of the second device, address information such as an IP address, and the like.

The terminal device 10-1, which has received the information, establishes a connection through peer-to-peer communication with the second device, the terminal device 10-2, and performs an exchange to obtain consent. If consent is obtained, the terminal device 10-1 acquires desired context data from the terminal device 10-2.

Note that if the terminal device 10-1 obtains consent from the terminal device 10-2, it releases the connection with the terminal device 10-2, establishes a connection with the terminal device 10-n, and receives the consent. After notifying that the desired context data has been obtained, the desired context data may be obtained from the terminal device 10-n.

Furthermore, in the example of FIG. 5, if consent from the second device is not required, the terminal device 10-n directly provides the context data acquired from the second device to the terminal device 10-1. Good too. Further, in such a case, the terminal device 10-n may also notify that the context data is acquired from the second device.

As a result, when the terminal device 10-1 needs the same type of context data in the future, it is possible to request the corresponding context data from the terminal device 10-2 with priority. Become.

[4. Processing sequence of information processing system 1]
Next, a processing sequence executed by the information processing system 1 according to the embodiment will be described. FIG. 6 is a processing sequence (Part 1) executed by the information processing system 1 according to the embodiment. Moreover, FIG. 7 is a processing sequence (part 2) executed by the information processing system 1 according to the embodiment.

Note that in the explanation using FIGS. 6 and 7, the terminal device 10-1 is the first device, the terminal device 10-2 is the second device, and the terminal device 10-n is the first device. 3 devices.

As shown in FIG. 6, the terminal device 10-1 first inquires the location of the context data desired by the terminal device 10-1 by broadcasting to the terminal devices 10-2, . . . 10-n (step S101).

Among the terminal devices 10-2, . . . 10-n that have received this, the terminal device 10-2 that holds the relevant context data notifies the terminal device 10-1 of holding the data (step S102).

Then, a connection by peer-to-peer communication is established between the terminal device 10-1 and the terminal device 10-2 (step S103), and via this connection, the terminal device 10-1 communicates with the terminal device 10-2. Context data is acquired from (step S104).

The context data acquired by the data acquisition process consisting of these steps S101 to S104 is used, for example, in the authentication process of the terminal device 10-1 in the ad hoc network by the server device 100.

In such a case, as shown in FIG. 7, the terminal device 10-1 requests the server device 100 for authentication in the ad hoc network (step S201). Then, the server device 100 that receives this requests context data from the terminal device 10-1 (step S202).

The context data requested here is, for example, context data that is not held by the terminal device 10-1 in a context environment compatible with an ad hoc network.

Upon receiving this request, the terminal device 10-1 acquires context data that it does not hold by the data acquisition process shown in FIG. 6 (step S203). Then, the terminal device 10-1 transmits the context data acquired by the data acquisition process to the server device 100 (step S204).

The server device 100 then authenticates the terminal device 10-1 based on the context data (step S205).

[5. Hardware configuration]
The terminal device 10 and the server device 100 according to the embodiments described above are realized by, for example, a computer 1000 having a configuration as shown in FIG. 8. The following will explain the terminal device 10 as an example. FIG. 8 is a hardware configuration diagram showing an example of a computer that implements the functions of the terminal device 10 according to the embodiment. The computer 1000 includes a CPU (Central Processing Unit) 1100, a RAM (Random Access Memory) 1200, a ROM (Read Only Memory) 1300, an HDD (Hard Disk Drive) 1400, a communication interface (I/F) 1500, and an input/output interface (I/F) 1500. /F) 1600, and a media interface (I/F) 1700.

CPU 1100 operates based on a program stored in ROM 1300 or HDD 1400, and controls each section. The ROM 1300 stores a boot program executed by the CPU 1100 when the computer 1000 is started, programs depending on the hardware of the computer 1000, and the like.

HDD 1400 stores programs executed by CPU 1100 and data used by the programs. The communication interface 1500 receives data from other devices via the communication network 500 (compatible with the network N shown in FIG. It is transmitted to other devices via the network 500.

The CPU 1100 controls output devices such as a display and a printer, and input devices such as a keyboard and a mouse via an input/output interface 1600. CPU 1100 obtains data from an input device via input/output interface 1600. Further, CPU 1100 outputs the generated data to an output device via input/output interface 1600.

Media interface 1700 reads programs or data stored in recording medium 1800 and provides them to CPU 1100 via RAM 1200. CPU 1100 loads the program from recording medium 1800 onto RAM 1200 via media interface 1700, and executes the loaded program. The recording medium 1800 is, for example, an optical recording medium such as a DVD (Digital Versatile Disc) or a PD (Phase change rewritable disk), a magneto-optical recording medium such as an MO (Magneto-Optical disk), a tape medium, a magnetic recording medium, or a semiconductor memory. etc.

For example, when the computer 1000 functions as the terminal device 10 according to the embodiment, the CPU 1100 of the computer 1000 realizes each function of the control unit 14 by executing a program loaded onto the RAM 1200. Furthermore, data in the storage unit 13 is stored in the HDD 1400. The CPU 1100 of the computer 1000 reads these programs from the recording medium 1800 and executes them, but as another example, these programs may be acquired from another device via the communication network 500.

[6. others〕
Furthermore, among the processes described in the above embodiments, all or part of the processes described as being performed automatically can be performed manually, or the processes described as being performed manually can be performed manually. All or part of the process can also be performed automatically using known methods. In addition, information including the processing procedures, specific names, and various data and parameters shown in the above documents and drawings may be changed arbitrarily, unless otherwise specified. For example, the various information shown in each figure is not limited to the illustrated information.

Furthermore, each component of each device shown in the drawings is functionally conceptual, and does not necessarily need to be physically configured as shown in the drawings. In other words, the specific form of distributing and integrating each device is not limited to what is shown in the diagram, and all or part of the devices can be functionally or physically distributed or integrated in arbitrary units depending on various loads and usage conditions. Can be integrated and configured.

For example, the inquiry unit 14a and the acquisition unit 14b shown in FIG. 3 may be integrated in the sense that they communicate through the same communication unit 11. Furthermore, the providing section 14d may be integrated in the sense that it also passes through the communication section 11. Further, for example, the information stored in the storage unit 13 may be stored in a predetermined external storage device via the network N.

Further, in the above embodiment, the terminal device 10-1, which is the first device, inquires about the location of its desired context data by broadcasting, but as a modification, the terminal device 10-1, which is the second device 2 may inquire by broadcasting whether it wants context data held by itself. In such a case, in response to the inquiry, the terminal device 10-1 that desires the relevant context data responds to the terminal device 10-2 with a data request notification indicating that the data is desired, and the terminal device 10-2 requests the context data. will be obtained.

Further, each terminal device 10 may directly send and receive data, but may also send and receive data indirectly using a network. For example, the terminal device 10-2 registers data in storage on the network in advance, and the terminal device 10-1 acquires information indicating the location of the data on the storage from the terminal device 10-2. , data on the storage may be acquired according to the acquired information.

Furthermore, the above-described embodiments and modifications can be combined as appropriate within a range that does not conflict with the processing contents.

[7. effect〕
The terminal device 10 (corresponding to an example of an "information processing device") according to the embodiment includes an inquiry section 14a and an acquisition section 14b. When the inquiry unit 14a is a first device that desires arbitrary context data, the inquiry unit 14a inquires about the location of the context data to one or more second devices and one or more third devices other than the second device. Inquire by broadcast. When there is a response from the second device indicating that it holds context data in response to the inquiry by the inquiry unit 14a, the acquisition unit 14b acquires the context data from at least one of the responding second devices. get.

Therefore, according to the terminal device 10 according to the embodiment, it is possible to know the location of desired context data and obtain it.

Additionally, the first device, second device, and third device form an ad hoc network.

Therefore, according to the terminal device 10 according to the embodiment, it is possible to know the location of desired context data and obtain it in a context environment compatible with an ad hoc network.

Further, the acquisition unit 14b acquires the context data from the second device via a peer-to-peer communication connection that is established when there is a response from the second device indicating that the second device holds the context data. get.

Therefore, according to the terminal device 10 according to the embodiment, desired context data can be obtained while maintaining confidentiality, for example.

Moreover, the terminal device 10 according to the embodiment further includes a providing section 14d. When the third device is the third device, the providing unit 14d transmits information regarding the second device to the first device based on history information regarding communication with the second device in response to the inquiry by the inquiry unit 14a. provide.

Therefore, according to the terminal device 10 according to the embodiment, the first device can indirectly know the location of desired context data and acquire it via the third device.

Furthermore, when the provision unit 14d retains the context data but requires the consent of the second device, it provides the first device with information indicating that such consent is required.

Therefore, according to the terminal device 10 according to the embodiment, the first device can know that desired context data can be obtained by obtaining consent from the second device via the third device.

Furthermore, the terminal device 10 according to the modification includes an acquisition unit 14b. When the acquisition unit 14b is a first device that desires arbitrary context data, if the acquisition unit 14b receives an inquiry about the desired context data by broadcast from one or more second devices holding the relevant context data, The device responds to at least one of the inquiries that the context data is desired, and acquires the context data from the second device that responded.

Therefore, according to the terminal device 10 according to the modification, the location of desired context data can be known and acquired by an inquiry from the second device that holds the context data.

Although the embodiments of the present application have been described above in detail based on the drawings, this is merely an example, and various modifications and improvements can be made based on the knowledge of those skilled in the art, including the embodiments described in the disclosure section of the invention. It is possible to implement the invention in other forms.

Further, the above-mentioned "section, module, unit" can be read as "means", "circuit", etc. For example, the acquisition unit can be read as an acquisition means or an acquisition circuit.

1 Information processing system 10 Terminal device 11 Communication unit 12 Sensor unit 13 Storage unit 13a Context information storage unit 13b History information storage unit 14 Control unit 14a Inquiry unit 14b Acquisition unit 14c Communication control unit 14d Providing unit 100 Server device

Claims (6)

When the first device desires arbitrary context data, it inquires by broadcasting the location of the context data to one or more second devices and one or more third devices other than the second device. Inquiry department and
When there is a response from the second device indicating that the context data is held in response to the inquiry by the inquiry unit, the context data is received from at least one of the responding second devices. It includes an acquisition unit that acquires the information, and
The acquisition unit includes:
When the responses are received from a plurality of second devices, the second device is determined based on predetermined criteria including at least the freshness of the context data and the reliability of the second devices based on past communication history. An information processing device characterized by selecting devices. The information processing apparatus according to claim 1, wherein the first device, the second device, and the third device form an ad hoc network. The acquisition unit includes:
acquiring the context data from the second device via a peer-to-peer communication connection that is established when there is a response from the second device indicating that it holds the context data; The information processing device according to claim 1 or 2, characterized in that: If the first device desires any context data and receives a broadcast inquiry for the context data from one or more second devices holding the context data, one of the inquiries an acquisition unit that responds to at least one of the devices that the context data is desired, and acquires the context data from the second device that responded;
The acquisition unit includes:
When the inquiry is received from a plurality of the second devices, the second device is determined according to predetermined criteria including at least the freshness of the context data and the reliability of the second device based on past communication history. An information processing device characterized by selecting devices. An information processing method performed by a computer, the method comprising:
When the first device desires arbitrary context data, it inquires by broadcasting the location of the context data to one or more second devices and one or more third devices other than the second device. Inquiry process and
In response to the inquiry in the inquiry step, when there is a response from the second device indicating that it holds the context data, the context data is received from at least one of the responding second devices. an acquisition step of acquiring;
The acquisition step includes:
When the responses are received from a plurality of second devices, the second device is determined according to predetermined criteria including at least the freshness of the context data and the reliability of the second devices based on past communication history. An information processing method characterized by selecting devices. When the first device desires arbitrary context data, it inquires by broadcasting the location of the context data to one or more second devices and one or more third devices other than the second device. inquiry procedure and
When there is a response from the second device indicating that it holds the context data in response to the inquiry by the inquiry procedure, the context data is received from at least one of the responding second devices. Make the computer execute the acquisition procedure and
The acquisition procedure is as follows:
When the responses are received from a plurality of second devices, the second device is determined based on predetermined criteria including at least the freshness of the context data and the reliability of the second devices based on past communication history. An information processing program characterized by selecting devices.

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