JP2022144902A - Information processing device, information processing method, and information processing program - Google Patents

Abstract

To provide an information processing device, an information processing method, and an information processing program that can locate and acquire desired context data.SOLUTION: An information processing device according to the present application includes an inquiry unit and an acquisition unit. When the information processing device is a first device that desires arbitrary context data, the inquiry unit inquires of one or more second devices and one or more third devices other than the second devices about the location of the context data by broadcast. When second devices respond that they have the context data to the inquiry by the inquiry unit, the acquisition unit acquires the context data from at least one of the second devices that have responded.SELECTED DRAWING: Figure 3

Description

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

Conventionally, there has been proposed a technique for providing a context awareness platform for realizing a ubiquitous society (see Patent Document 1, for example). Such technology is for sharing various context data acquired by various sensor devices, including computers, which are ubiquitous in real space.

Japanese Patent Publication No. 2017-503371

However, the conventional techniques described above have room for further improvement in locating and acquiring desired context data.

Specifically, for example, in an ad-hoc network formed by a group of multiple devices, when a certain 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 an object thereof is to provide an information processing apparatus, an information processing method, and an information processing program capable of locating and acquiring desired context data.

An information processing apparatus according to the present application includes an inquiry unit and an acquisition unit. The inquiry unit, when the first device that desires arbitrary context data, asks one or more second devices and one or more third devices other than the second device for the context data. Inquire about whereabouts by broadcasting. The obtaining unit, when receiving a response from the second device indicating that the context data is held in response to an inquiry by the inquiry unit, at least one of the second devices responding get the context data from.

According to one aspect of the embodiment, it is possible to locate and acquire desired context data.

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 the embodiment; FIG. 3 is a block diagram illustrating a configuration example of a terminal device according to the 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.

Embodiments for implementing 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. The information processing apparatus, information processing method, and information processing program according to the present application are not limited to this embodiment. Further, each embodiment can be appropriately combined within a range that does not contradict the processing contents. Also, in each of the following embodiments, the same parts are denoted by the same reference numerals, and overlapping descriptions are omitted.

[1. Example of information processing]
First, an example of information processing according to the embodiment will be described with reference to FIG. 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 an 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 are inquired about the location of the context data by broadcasting, and in response to such inquiry, a response indicating that the context data is held from the second device 10 illustrates an example of performing a process of obtaining context data from at least one of the responding second devices, if any.

As shown in FIG. 1, an 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. Also, the terminal device 10-2 corresponds to an example of a second device. Also, 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 for peer-to-peer wireless communication, and can form an ad-hoc network as a context environment. . . , 10-n are referred to as “terminal devices 10” when there is no particular need to distinguish them.

The terminal device 10 is an example of a sensor device having various sensors. For example, the terminal device 10 has a G sensor, a gyro sensor, a GPS (Global Positioning System) sensor, etc., and is a terminal device 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 smart phone, a tablet terminal, a desktop PC, a notebook PC, or a PDA (Personal Digital Assistant). The terminal device 10 also includes a wearable device, which is an information processing device in the form of spectacles or a watch. Computers such as servers and workstations are also included. Also, the terminal device 10 may be a game machine or the like capable of so-called StreetPass communication (registered trademark).

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

Here, consider a case where the terminal device 10-1, which is the first device, wants to acquire arbitrary context data from any of the terminal devices 10-2, . . . 10-n in the ad-hoc network. It is also assumed that context data desired by the terminal device 10-1 is held as context information by the terminal device 10-2, which is the second device.

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 that desires arbitrary context data, for one or more second devices and one or more third devices other than the second device, , the location of the context data is inquired by broadcasting, and when there is a response from the second device indicating that the context data is held in response to the inquiry, from at least one of the responding second devices I decided to get the context data.

Specifically, as shown in FIG. 1, in the information processing method according to the embodiment, the terminal device 10-1 first broadcasts a data location inquiry to the terminal devices 10-2, . (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, . 1 (step S2).

Then, the terminal device 10-1 that has received such a 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 performing such a series of procedures, the terminal device 10-1 can know the location of the desired context data and acquire it.

In response to the inquiry in step S1, the terminal device 10-n, which has a communication history with the terminal device 10-2, does not hold the context data desired by the terminal device 10-1. Information about the device 10-2 may be provided to the terminal device 10-1.

Similarly, in response to the inquiry in step S1, the terminal device 10-n, which has a communication history with the terminal device 10-2, although it holds the context data desired by the terminal device 10-1, is required, information to that effect may be provided to the terminal device 10-1. Such modifications will be described later with reference to FIGS. 4 and 5. FIG.

Terminal devices 10 that are physically fixed in a facility such as a store are registered in the system as devices that hold deterministic position information. If context data is desired, context data may be obtained from the device unconditionally.

Also, a second device refers to one or more devices that hold context data desired by the first device. Therefore, when the terminal device 10-1, which is the first device, receives data holding notification responses from a plurality of terminal devices 10-2, any one of the terminal devices 10-2 that have received the responses 2, or from two or more terminal devices 10-2. The terminal device 10-1 selects the terminal device 10-2 according to a predetermined criterion, for example, based on the newness of the context data, the reliability of the terminal device 10-2 based on the past communication history, and the like. can be selected.

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

As described above, in the information processing method according to the embodiment, when the first device that desires arbitrary context data is one or more second devices and one or more third devices other than the second device, Devices are broadcast to inquire about the location of context data, and when a second device responds to the inquiry indicating that it holds context data, at least one of the second devices that responds Get context data from either.

Therefore, according to the information processing method according to the embodiment, it is possible to know the location of the desired context data and acquire it.

The information processing system 1 including the information processing apparatus that performs information processing as described above will be described in detail below.

[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, .

These various devices are communicably connected via a network N 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 telephone network, fixed telephone network, etc.), a local IP (Internet Protocol) network, or the Internet. The network N may include wired networks or wireless networks.

As described above, the terminal devices 10-1, 10-2, . Since the terminal device 10 has already been described, detailed description thereof will be omitted here.

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

Further, the server device 100 can identify and authenticate the terminal device 10 and provide various services according to the ad-hoc network in which the 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 with reference to FIG. 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 components necessary for explaining the terminal device 10, and omits descriptions of general components.

As shown in FIG. 3 , the terminal device 10 has 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 unit (for example, a keyboard, a mouse, etc.) that receives various operations from a user or the like who uses the terminal device 10, a display unit (for example, a liquid crystal display, etc.) for displaying display information, , a speaker unit or the like for outputting audio information.

(Regarding communication unit 11)
The communication unit 11 is realized by, for example, a NIC (Network Interface Card) or the like. 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.

Also, the communication unit 11 is connected to another terminal device 10 for peer-to-peer wireless communication, and transmits and receives information to and from the other terminal device 10 . Wi-Fi (registered trademark), Bluetooth (registered trademark), UWB (Ultra Wide Band), NFC (Near Field Communication), or the like can be used as a wireless communication method.

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

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

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

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

(Regarding the control unit 14)
The control unit 14 is a controller, and for example, various programs (an example of an information processing program) stored in a storage device inside the terminal device 10 by a CPU (Central Processing Unit), MPU (Micro Processing Unit), etc. ) is executed using the RAM as a work area. Also, the control unit 14 is, for example, a controller, and is implemented 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 actions 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 another configuration as long as it can perform information processing described later. Further, the connection relationship between the processing units of the control unit 14 is not limited to the connection relationship shown in FIG. 3, and may be another connection relationship.

The control unit 14 notifies the location of the context data to one or more second devices and one or more third devices other than the second device when the first device desires arbitrary context data. Inquiries are made by broadcasting, and when a second device responds to the inquiry indicating that it holds context data, the context data is acquired from at least one of the responding second devices.

(Regarding inquiry unit 14a)
. . 10-n in the ad-hoc network via the communication unit 11 when the terminal device 10 is the above-described first device. Broadcast meta information asking whereabouts.

(Regarding 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 desired context data is retained, the acquisition unit 14b instructs the communication control unit 14c to communicate with the terminal device 10 that responded to the notification. to establish a connection through peer-to-peer communication.

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

(Regarding 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.

In addition, 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.・Release the connection by peer communication.

(Regarding the providing unit 14d)
When the terminal device 10 is the above-described second device, the providing unit 14d provides the first device with the context data held by itself and desired by the first device.

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

Further, when the terminal device 10 is the above-described third device, the providing unit 14d holds the context data desired by the first device. Information may be provided to require consent.

Such a modified example will be specifically shown. FIG. 4 is a process explanatory diagram (part 1) of the provision process according to the modification. Also, 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). Also, the communication history includes the history of StreetPass communication.

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

The information about 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 simply passing each other. be

After receiving such information, the terminal device 10-1 requests the terminal device 10-2, which is the second device, to provide, for example, desired context data. -2 through peer-to-peer communication. Then, desired context data is acquired from the terminal device 10-2.

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

In such a case, when the terminal device 10-n receives the inquiry by the above broadcast from the terminal device 10-1 (step S1), the terminal device 10-n sends the desired message to the terminal device 10-1. It retains the context data, but can be informed that it requires the consent of the second device (step S6).

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

Then, the terminal device 10-1, which has received such information, establishes a connection with the terminal device 10-2, which is the second device, by peer-to-peer communication, and performs exchanges for obtaining consent. Then, when consent is obtained, the terminal device 10-1 acquires desired context data from the terminal device 10-2.

If the terminal device 10-1 obtains the consent from the terminal device 10-2, the terminal device 10-1 releases the connection with the terminal device 10-2, establishes the connection with the terminal device 10-n, and obtains the consent. Desired context data may be obtained from the terminal device 10-n after notifying that it has been obtained.

Further, in the example of FIG. 5, if the approval of the second device is unnecessary, the terminal device 10-n directly provides the context data acquired from the second device to the terminal device 10-1. good too. In such a case, the terminal device 10-n should also notify that the context data is acquired from the second device.

As a result, when the terminal device 10-1 needs context data of the same type in the future, it is possible to preferentially request the corresponding context data from the terminal device 10-2. 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. FIG. 7 is a processing sequence (part 2) executed by the information processing system 1 according to the embodiment.

6 and 7, as before, 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 second device. 3 device.

As shown in FIG. 6, the terminal device 10-1 first broadcasts an inquiry to the terminal devices 10-2, .

Of 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 data holding (step S102).

Then, a connection is established by peer-to-peer communication between the terminal device 10-1 and the terminal device 10-2 (step S103). (step S104).

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

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

The context data requested here is, for example, context data not held by the terminal device 10-1 in the context environment corresponding to the ad-hoc network.

Upon receiving such a request, the terminal device 10-1 acquires the context data 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).

Then, the server device 100 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 above-described embodiments are implemented by a computer 1000 configured as shown in FIG. 8, for example. Hereinafter, the terminal device 10 will be described 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, a HDD (Hard Disk Drive) 1400, a communication interface (I/F) 1500, an input/output interface (I /F) 1600 and a media interface (I/F) 1700 .

The CPU 1100 operates based on programs stored in the 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 up, a program 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. Communication interface 1500 receives data from other devices via communication network 500 (corresponding to network N and peer-to-peer communication shown in FIG. 2), sends data to CPU 1100, and transmits data generated by CPU 1100 to the CPU 1100. It transmits to other equipment via the network 500 .

The CPU 1100 controls output devices such as displays and printers, and input devices such as keyboards and mice, through an input/output interface 1600 . CPU 1100 acquires data from an input device via input/output interface 1600 . CPU 1100 also 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 disc), 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 implements each function of the control unit 14 by executing programs loaded on the RAM 1200 . The data in the storage unit 13 is also stored in the HDD 1400 . CPU 1100 of computer 1000 reads these programs from recording medium 1800 and executes them, but as another example, these programs may be obtained from another device via communication network 500 .

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

Also, each component of each device illustrated is functionally conceptual, and does not necessarily need to be physically configured as illustrated. In other words, the specific form of distribution and integration of each device is not limited to the one shown in the figure, and all or part of them can be functionally or physically distributed and integrated in arbitrary units according to various loads and usage conditions. Can be integrated and configured.

For example, the inquiry unit 14a and the acquisition unit 14b shown in FIG. Further, the providing unit 14d may also be integrated in the sense that it is via the communication unit 11 as well. Further, for example, the information stored in the storage unit 13 may be stored via the network N in a predetermined external storage device.

Further, in the above embodiment, the terminal device 10-1, which is the first device, broadcasts an inquiry about the location of the context data it desires. 2 may inquire about the desired context data held by itself by broadcasting. In such a case, the terminal device 10-1 desiring the relevant context data responds to the inquiry with a data desiring notification indicating that the data is desired to the terminal device 10-2, and the context data is received from the terminal device 10-2. will be obtained.

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

Also, the above-described embodiments and modifications can be appropriately combined within a range that does not contradict the processing contents.

[7. effect〕
A terminal device 10 (corresponding to an example of an “information processing device”) according to the embodiment includes an inquiry unit 14a and an acquisition unit 14b. The inquiry unit 14a, when the first device desires arbitrary context data, inquires of the location of the context data for one or more second devices and one or more third devices other than the second device. Query by broadcast. In response to the inquiry by the inquiry unit 14a, the acquisition unit 14b obtains the context data from at least one of the responding second devices when a response indicating that the context data is held is received from the second device. to get

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

Also, the first device, the second device and the 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 the desired context data and acquire it in the context environment corresponding to the ad-hoc network.

In addition, the acquisition unit 14b receives the context data from the second device via a peer-to-peer communication connection established when a response indicating that the context data is held is received from the second device. to get

Therefore, according to the terminal device 10 according to the embodiment, it is possible to acquire desired context data while maintaining confidentiality, for example.

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

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

Further, when the provision unit 14d holds the context data but requires approval from the second device, the provision unit 14d provides the first device with information indicating that the approval is required.

Therefore, according to the terminal device 10 according to the embodiment, the first device can know through the third device that it can acquire the desired context data by obtaining the consent of the second device.

Moreover, 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, and receives a desired context data inquiry by broadcast from one or more second devices that hold the context data, Responding to a request for the context data to at least one of the queries and obtaining the context data from the responsive second device.

Therefore, according to the terminal device 10 according to the modified example, it is possible to know and acquire the location of the desired context data by an inquiry from the second device holding the same.

As described above, the embodiments of the present application have been described in detail with reference to the drawings, but these are examples, and various modifications and improvements, including the aspects described in the section of the disclosure of the invention, can be made based on the knowledge of those skilled in the art. It is possible to implement the invention in other forms.

Also, the above-mentioned "section, module, unit" can be read as "means" or "circuit". For example, the acquisition unit can be read as 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 provision unit 100 server device

Claims (8)

When a first device desires arbitrary context data, it broadcasts an inquiry about 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;
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 retrieved from at least one of the responding second devices. An information processing apparatus comprising: an acquisition unit that acquires; The information processing apparatus according to claim 1, wherein said first device, said second device and said third device form an ad-hoc network. The acquisition unit
obtaining the context data from the second device via a peer-to-peer communication connection established when a response indicating that the context data is held is received from the second device; 3. The information processing apparatus according to claim 1, wherein: In the case of the third device, providing information on the second device to the first device based on history information on communication with the second device in response to an inquiry by the inquiry unit. 4. The information processing apparatus according to claim 1, further comprising a providing unit for providing the information. The providing unit
5. The information processing according to claim 4, wherein if the context data is retained but approval of the second device is required, information indicating that the approval is required is provided to the first device. Device. When a first device desiring any context data receives a request for said context data by broadcast from one or more second devices holding said context data, one of said queries an acquisition unit that responds to at least one of the second devices that the context data is desired, and acquires the context data from the second device that has responded. A computer-executed information processing method comprising:
When a first device desires arbitrary context data, it broadcasts an inquiry about the location of the context data to one or more second devices and one or more third devices other than the second device. an inquiry process;
when there is a response from the second device indicating that the context data is held in response to the query in the query step, the context data is retrieved from at least one of the responding second devices; An information processing method, comprising: an acquiring step of acquiring; When a first device desires arbitrary context data, it broadcasts an inquiry about the location of the context data to one or more second devices and one or more third devices other than the second device. contact procedure and
when there is a response from the second device indicating that the context data is held in response to an inquiry by the inquiry procedure, the context data is transmitted from at least one of the responding second devices. An information processing program characterized by causing a computer to execute an acquisition procedure to acquire.

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