JP4845968B2 - COMMUNICATION TERMINAL DEVICE, COMMUNICATION METHOD, COMMUNICATION PROGRAM, AND COMPUTER-READABLE RECORDING MEDIUM - Google Patents

Description

  The present invention relates to a communication terminal device located in a communication area of a communication management device, a communication method in the device, a communication program, and a computer-readable recording medium. However, the use of the present invention is not limited to the above-described communication terminal device, communication method, communication program, and computer-readable recording medium.

  2. Description of the Related Art Conventionally, a navigation device scrolls and displays a map around a host vehicle position according to the travel of a vehicle, searches for a guidance route to a destination, displays the map on the map, and guides the driver to the destination. Among such navigation devices, the road traffic information communication system (VICS) compatible navigation device has a function of receiving road traffic information (VICS information) such as traffic jams, accidents, and regulations provided by VICS and displaying it on a map in real time. have.

  By using the VICS, the driver can reach the destination in a short time by avoiding the traffic jam road, the traffic regulation road, and the accident occurrence road. In addition, beacons such as optical beacons and radio wave beacons are arranged on the road as a communication information management device for the navigation device to use the VICS information. The VICS information is transmitted from these beacons, and the navigation device can receive the VICS information (for example, refer to Patent Document 1 below).

  Further, the navigation device can not only receive the VICS information transmitted from the beacon, but can also transmit (uplink) information about the vehicle such as the traveling speed and the traveling position to the beacon. The beacon can acquire more detailed traffic information by receiving information about the vehicle from the navigation device. Furthermore, these pieces of information can be fed back to the navigation device as the transmission source.

JP 2006-3292 A

  However, in order to transmit VICS information from a beacon to a specific navigation device as in Patent Document 1, identification information such as an ID is required to specify the navigation device. Therefore, in the conventional technology such as the above-mentioned Patent Document 1, for example, a method of assigning a fixed corresponding ID to one navigation device and transmitting VICS information based on the assigned ID is used.

  In the case of the above-described method, it becomes possible to completely capture the behavior of the navigation device by using the fixed ID, and as a result, the behavior of the user of the navigation device is specified. Therefore, there is a problem that some users have anonymity and may be disgusted by specifying an individual.

  In addition, personal information is accumulated in the beacon because information about a specific user is collected from each navigation device. Therefore, from the viewpoint of personal information protection, the beacon has an example of a problem that an advanced security function for information management must be provided.

  Here, it is assumed that a temporary ID is used instead of the fixed ID so that the user's behavior is not specified. Specifically, for example, every time communication between the navigation device and the beacon is established, a one-time ID is generated by the beacon and given to the navigation device. Information is transmitted and received based on this one-time ID. However, when the one-time ID is used, when the established communication is canceled and communication is established again, the navigation device is given a one-time ID different from that at the previous communication. Therefore, the problem that the information which the beacon received at the time of previous communication cannot be fed back to a navigation apparatus is mentioned as an example.

  A communication terminal device according to a first aspect of the present invention is a communication terminal device located within a communication area of a communication management device, wherein the detection device detects activation and stop of the own device, and the detection means is a device of the own device. A first storage unit that stores the identification information of the own device in the first identification information storage unit when the stop is detected; and when the detection unit detects activation of the own device, Generation means for newly generating identification information, second storage means for storing new identification information generated by the generation means in a second identification information storage section, and storage in the second identification information storage section The identification information stored in the first identification information storage unit when information is transmitted / received to / from the communication management apparatus based on the new identification information and when identification information other than the new identification information is received. And one And a communication means for transmitting / receiving information to / from the communication management device based on the identification information stored in the first identification information storage unit if the two match. And

  According to a fifth aspect of the present invention, there is provided a communication method for a communication terminal device located within a communication area of a communication management device, the detection step for detecting activation and stop of the own device, and the detection step. When the stop of the own device is detected, the first storage processing step of storing the identification information of the own device in the first identification information storage unit and the activation of the own device are detected in the detection step A generating step for newly generating the identification information of the device itself, a second storage processing step for storing the new identification information generated in the generating step in a second identification information storage unit, When the identification information other than the new identification information is received and information is transmitted to and received from the communication management device based on the new identification information stored in the identification information storage unit 2, the first identification information Store in storage A communication step for transmitting / receiving information to / from the communication management device based on the identification information stored in the first identification information storage unit. , Including.

  A communication program according to a sixth aspect of the present invention causes a computer to execute the communication method according to the fifth aspect.

  According to a seventh aspect of the present invention, a computer-readable recording medium records the communication program according to the sixth aspect.

It is a block diagram which shows the system configuration | structure of embodiment of this invention. It is a flowchart which shows the content of the process of the communication management apparatus concerning embodiment of this invention. It is a flowchart which shows the content of the process of the communication terminal device concerning embodiment of this invention. It is a block diagram which shows the hardware constitutions of a server. It is a block diagram which shows the hardware constitutions of a navigation apparatus. 10 is a sequence diagram showing the contents of bidirectional communication processing using Method 1. FIG. FIG. 10 is a sequence diagram illustrating an example of a deformation process of Method 1. 12 is a sequence diagram showing the contents of bidirectional communication processing using Method 2. FIG. 10 is a sequence diagram illustrating an example of a deformation process of Method 2. FIG. FIG. 10 is a sequence diagram showing the contents of bidirectional communication processing using Method 3. 12 is a sequence diagram illustrating an example of a deformation process of Method 3. FIG. It is a flowchart which shows the content of the reception process of the information addressed to erased ID.

  Exemplary embodiments of a communication terminal device, a communication method, a communication program, and a computer-readable recording medium according to the present invention will be explained below in detail with reference to the accompanying drawings.

(System configuration)
First, the system configuration of the embodiment of the present invention will be described. FIG. 1 is a block diagram showing a system configuration of an embodiment of the present invention. As shown in FIG. 1, the present embodiment is realized by a system configuration including the communication management device 110 and the communication terminal device 120.

  In the present embodiment, the communication management device 110 is an information communication device arranged at a predetermined location. The communication management apparatus 110 receives information transmitted from the communication terminal apparatus 120 in the communicable area. Further, the communication management apparatus 110 can transmit predetermined information to a plurality of communication terminal apparatuses 120 and can transmit information only to a specific communication terminal apparatus 120 in response to information received from the communication terminal apparatus 120. .

  The communication terminal device 120 is an information communication device mounted on a mobile body. The communication terminal device 120 can establish communication with the communication management device 110 as long as it is within the communicable area of the communication management device 110. At this time, a plurality of communication terminal devices 120 exist for the communication management device 110. Therefore, in a state where communication is simply established, the communication management apparatus 110 cannot determine from which communication terminal apparatus 120 the information has been received even if information is received from the communication terminal apparatus 120. In addition, even when information is transmitted from the communication management device 110, it cannot be transmitted to a specific communication terminal device 120.

  Therefore, in the case of the present embodiment, the communication management apparatus 110 uses identification information for specifying the communication terminal apparatus 120 for bidirectional communication with the communication terminal apparatus 120. This identification information is not set and fixed for each communication terminal device 120, but is arbitrarily generated by the communication terminal device 120 when performing bidirectional communication. Then, the identification information generated by the communication terminal device 120 is notified to the communication management device 110.

  Communication terminal apparatus 120 temporarily uses the generated identification information only for a predetermined period. The predetermined period is an arbitrarily set period such as a period from start to stop of the apparatus. As described above, when a predetermined period is from start to stop of the apparatus, the identification information generated using the stop of the communication terminal apparatus 120 as a trigger is deleted. By performing such processing, the identification information becomes valid only for a limited period. When the communication terminal device 120 is activated again, new identification information is generated, and the identification information is notified to the communication management device 110 in order to perform bidirectional communication using this identification information.

  By providing the configuration as described above, the communication management apparatus 110 temporarily specifies what information the communication terminal apparatus 120 has transmitted, that is, what action the communication terminal apparatus 120 has performed. be able to. For example, it is assumed that identification information “AAA” is received from a communication terminal apparatus 120 with a communication management apparatus 110 and a transmission / reception process with the communication terminal apparatus 120 is performed. When the communication terminal apparatus 120 stops the apparatus, “AAA” is deleted. When communication terminal device 120 is activated again to establish communication with communication management device 110, communication terminal device 120 generates new identification information “BBB” and notifies communication management device 110. Therefore, when the communication management device 110 receives new identification information “BBB” in the communication terminal device 120, the communication management device 110 performs transmission / reception processing using this “BBB”. In addition, until the communication terminal device 120 is stopped, transmission / reception processing is performed any number of times using “AAA” or “BBB” regardless of whether the communication terminal device 120 is in the same communication area or another communication area. be able to.

  When the processing as described above is performed, the communication management device 110 is the same device as the communication terminal device 120 that performs transmission / reception processing as “AAA” and the communication terminal device 120 that performs transmission / reception processing as “BBB”. I don't know there is. As described above, the communication terminal apparatus 120 can maintain the anonymity of the communication terminal apparatus 120 while performing bidirectional communication with the communication management apparatus 110.

(Functional configuration of communication management device)
Next, the communication management apparatus 110 according to the embodiment of the present invention will be described with reference to FIG. The communication management apparatus 110 according to this embodiment includes a communication determination unit 111, a reception unit 112, a storage processing unit 113, an identification information storage unit 114, a communication unit 115, an acquisition unit 116, and a request unit 117. It is configured to include.

  The communication determination unit 111 determines whether communication with the communication terminal device 120 within the communicable area of the communication management device 110 has been established. Specifically, the connection state between the communication management device 110 and the communication terminal device 120 is detected, and it is determined whether or not the connection state is stable and can be communicated. That is, if the connection is stable, it is determined that communication has been established.

  When the communication determining unit 111 determines that communication with the communication terminal device has been established, the receiving unit 112 receives identification information of the communication terminal device 120 with which communication has been established. The identification information is information for specifying a communication partner. The receiving unit 112 can receive the identification information when the identification information is transmitted from the communication terminal device 120 that has established communication.

  The storage processing unit 113 stores the identification information received by the reception unit 112 in the identification information storage unit 114. The identification information storage unit 114 is a recording unit provided in the communication management apparatus 110. In this recording means, an identification information storage unit 124 is set as a dedicated recording area for storing identification information. Note that the hardware and recording method of the recording means are arbitrary.

  The communication unit 115 performs two-way communication with the communication terminal device 120 based on the identification information stored in the storage processing unit. Specifically, for example, information including identification information is transmitted / received to / from the communication terminal device 120.

  In addition, the communication management apparatus 110 may add the following acquisition unit 116 and request unit 117 to the basic configuration described above. By using the acquisition unit 116 and the request unit 117, the reception unit 112 can receive identification information in various procedures.

  When using the acquisition unit 116, the acquisition unit 116 directly connects to the communication terminal device 120 and acquires identification information. Specifically, the acquisition unit 116 connects to the identification information storage unit 124 of the communication terminal device 120 and acquires the identification information. The process of the acquisition unit 116 is triggered by the determination that the communication determination unit 111 has established communication with the communication terminal device 120. The identification information storage unit 124 is a recording unit that stores identification information provided in the communication terminal device 120 (details will be described later). As described above, when the acquisition unit 116 acquires the identification information, the reception unit 112 receives the identification information acquired by the acquisition unit 116.

  When using the request unit 117, the request unit 117 transmits a request signal to the communication terminal apparatus 120 so as to transmit identification information to the communication management apparatus 110. The processing of the request unit 117 is performed by using the determination that the communication determination unit 111 has established communication with the communication terminal device 120 as a trigger. When the request unit 117 transmits the request signal in this way, the reception unit 112 receives the identification information transmitted from the communication terminal device 120 in response to the request signal.

  The accepting unit 112 may accept transmission information to the communication management device 110 when accepting identification information from the communication terminal device 120. The transmission information received here is received in association with the identification information received at the same time.

(Functional configuration of communication terminal device)
Next, the functional configuration of the communication terminal apparatus 120 will be described with reference to FIG. As shown in FIG. 1, the communication terminal device 120 includes a detection unit 121, a generation unit 122, a storage processing unit 123, an identification information storage unit 124, a notification unit 125, a communication unit 126, an erasure unit 127, The communication determination unit 128 and the reception unit 129 are included.

  The detection unit 121 detects activation and stop of the own device (communication terminal device 120). Note that what is detected by the detection unit 121 is not limited to the start and stop of the device itself, but may be the start and stop of an arbitrarily set device. For example, the behavior of a mobile body on which the communication terminal device 120 is mounted (engine start / stop, parking brake on / off, battery device start / stop, etc.) may be detected.

  The generation unit 122 newly generates identification information of the own device (communication terminal device 120) when the detection unit 121 detects activation of the own device. About the content of the identification information produced | generated by the production | generation part 122, arbitrary information may be sufficient if it is the unique information which can discriminate | determine a difference from other identification information.

  The storage processing unit 123 stores the identification information generated by the generation unit 122 in the identification information storage unit 124. The identification information storage unit 124 is a recording unit provided in the communication terminal device 120. In this recording means, an identification information storage unit 124 is set as a dedicated recording area for storing identification information. Note that the hardware and recording method of the recording means are arbitrary.

  The notification unit 125 notifies the communication management device 110 of the identification information generated by the generation unit 122. Specifically, the notification is a process of transmitting identification information to the communication management device 110.

  The communication unit 126 performs two-way communication with the communication management device 110 based on the identification information stored in the identification information storage unit 124. Specifically, information including identification information is transmitted and received with the communication unit 115 of the communication management apparatus 110.

  The erasure unit 127 erases the identification information stored in the identification information storage unit 124 when the detection unit 121 detects the stop of the own device. That is, when the detection unit 121 detects that the apparatus is stopped, it is impossible to transmit information using the identification information generated by the generation unit 122.

  In addition, as described above, when the detection unit 121 detects activation of the own device after the deletion unit 127 deletes the identification information stored in the identification information storage unit 124, the generation unit 122 The identification information of the communication terminal device 120) is newly generated, and the storage processing unit 123 uses the newly generated identification information (identification information different from the identification information erased by the erasure unit 127) to identify itself. Information is stored in the identification information storage unit 124 as information.

  In addition, the communication terminal device 120 may add the communication determination unit 128 and the reception unit 129 to the basic configuration as described above. By adding such a configuration, the communication terminal device 120 can notify the communication management device 110 of identification information by various methods.

  The communication determination unit 128 determines whether communication with the communication management apparatus 110 has been established. When the communication determination unit 128 is used, the notification unit 125 notifies the communication management device 110 of the identification information using a determination that the communication determination unit 128 has established communication with the communication management device 110 as a trigger.

  The accepting unit 129 accepts a request signal requesting to transmit identification information from the communication management device 110. When the reception unit 129 is used, the notification unit 125 notifies the identification information to the communication management device 110 that has transmitted the request signal received by the reception unit 129.

  Further, the communication management apparatus 110 cannot grasp the deletion of the identification information in the communication terminal apparatus 120. Therefore, information may be transmitted from the communication management apparatus 110 using identification information that has already been deleted. Even in such a case, the transmitted information can be correctly received using the above-described configuration.

  Specifically, when the identification information is deleted from the identification information storage unit 124 by the deletion unit 127, the storage processing unit 123 newly stores the deleted identification information as the old identification information in the identification information storage unit 124. . At this time, a dedicated recording area for storing old identification information may be set in the identification information storage unit 124. The communication unit 126 receives the information when the identification information included in the information transmitted from the communication management device 110 matches the identification information stored in the identification information storage unit 124 or the old identification information. That's fine. Thus, by receiving the information of the old identification information, the information transmitted from the communication management device 110 can be footed back without missing.

(Contents of communication management device processing)
Next, the contents of processing of the communication management apparatus 110 will be described. FIG. 2-1 is a flowchart showing the contents of processing of the communication management apparatus according to the embodiment of the present invention. In the flowchart of FIG. 2A, first, the communication determination unit 111 determines whether communication with the communication terminal device 120 has been established (step S211). Here, it waits until communication is established (step S211: loop of No). When communication is established (step S211: Yes), it is determined whether or not the identification information of the connected communication terminal device 120 has been received by the reception unit 112. (Step S212).

  In step S212, the process waits until the identification information of the communication terminal device 120 is received (step S212: No loop). When the identification information is received (step S212: Yes), the identification information received by the storage processing unit 113 is displayed as the identification information storage unit. It stores in 114 (step S213).

  Then, the communication unit 115 transmits / receives information to / from the communication terminal device 120 based on the identification information (step S214), and the series of processing ends. This identification information is the identification information received from the communication terminal device 120 in step S212. As shown in FIG. 1, there are a plurality of communication terminal apparatuses 120, but the above-described processing is performed individually for each communication terminal apparatus 120 capable of communicating with the communication management apparatus 110.

(Contents of communication terminal device processing)
Next, the processing contents of the communication terminal apparatus 120 will be described. FIG. 2-2 is a flowchart showing the contents of the processing of the communication terminal apparatus according to the embodiment of the present invention. In the flowchart of FIG. 2-2, first, the detection unit 121 determines whether activation of the device (communication terminal device 120) is detected (step S221).

  When activation of the apparatus is detected in step S221 (step S221: Yes), identification information is then generated in the generation unit 122 (step S222). The generated identification information is stored in the identification information storage unit 124 by the storage processing unit 123 (step S223). afterwards. The communication determination unit 128 determines whether or not communication with the communication management apparatus 110 has been established (step S224).

  In step S224, the communication determination unit 128 waits until it is determined that communication with the communication management device 110 is established (step S224: No loop). When communication is established (step S224: Yes), the notification unit 125 is established. Thus, the identification information is notified to the communication management apparatus 110 (step S225), and the communication unit 126 transmits / receives information to / from the communication management apparatus 110 based on the identification information (step S226).

  After the transmission / reception of information is performed in step S226, the detection unit 121 determines whether or not the stop of the device (communication terminal device 120) is detected (step S227). Here, when the stop of the apparatus is detected (step S227: Yes), the erasure unit 127 erases the identification information stored in the identification information storage unit 124 (step S228), and the series of processing ends.

  Also, in step S221, when the detection unit 121 does not detect the activation of the device (communication terminal device 120) (step S221: No), the process proceeds to step S227, and whether or not the device is detected stopped. Judging. In step S227, when the stop of the apparatus is not detected (step S227: No), the process returns to the process of step S221, and it is determined whether the activation of the apparatus is detected.

  As described above, according to the present embodiment, communication management apparatus 110 receives identification information from communication terminal apparatus 120. This identification information is arbitrarily generated by the communication terminal device 120 and is temporarily set. Therefore, the communication management device 110 can temporarily specify the mobile body on which the communication terminal device 120 is mounted, and can execute bidirectional communication for the specific communication terminal device 120. In addition, the communication management device 110 transmits appropriate information according to the situation of each communication terminal device 120, such as the position of the communication terminal device 120 and the traveling state of the mobile body equipped with the communication terminal device 120 (information feedback). can do.

  Moreover, since the specification of the communication terminal device 120 is not fixed but temporary, it is possible to prevent the behavior of the user of the communication terminal device 120 from being specified. Therefore, both personal information protection and information feedback can be achieved.

  Next, examples according to the present embodiment will be described. In this example, the communication management apparatus 110 described in the embodiment is realized as a server having a beacon function. Communication terminal device 120 is realized as a navigation device mounted on a moving body (for example, a vehicle).

  Below, the structure of a server and a navigation apparatus and the content of the specific process for performing two-way communication are demonstrated. In this embodiment, the navigation device generates an ID as temporary identification information. In addition, the server and the navigation device perform bidirectional communication using this ID to realize transmission / reception of predetermined information (for example, VICS information). In the embodiment, the activation / stop of the communication terminal device 120 is detected, and identification information is generated and deleted. In the embodiment, the communication terminal device 120 is realized by a navigation device mounted on a vehicle. Therefore, the start / stop of the engine of the vehicle is detected, and the ID is generated and deleted according to this detection.

(Hardware configuration of the server)
First, the hardware configuration of the server will be described. FIG. 3 is a block diagram illustrating a hardware configuration of the server. As illustrated in FIG. 3, the server 300 includes a CPU 301, a ROM 302, a RAM 303, an HD 304, and a communication unit 305. The server 300 includes a beacon 306 outside. This beacon 306 is connected to the server 300 via the network 310.

  The CPU 301 governs overall control of the server 300. The ROM 302 records programs such as a boot program and a communication program. The RAM 303 is used as a work area for the CPU 301. The HD 304 is a hard disk and is a non-volatile magnetic disk that stores data by magnetism. The HD 304 also includes a hard disk drive. The hard disk drive controls reading / writing of data in the hard disk and records data in the hard disk.

  A communication unit 305 is connected to the network 310 and functions as an interface between a beacon 306 and a server 300 described later. Specifically, the communication unit 305 includes, for example, an FM tuner, a VICS / beacon receiver, a wireless navigation device, and other communication devices. The network 310 specifically includes a LAN, a WAN, a public line network, a mobile phone network, and the like.

  The beacon 306 establishes communication with a vehicle (for example, the vehicle 320, 330, 340) within a predetermined communicable area (for example, the communication area A, the communication area B, etc.), and the server 300 and the navigation device 400 described later. Functions as an interface. Specifically, the beacon 306 is provided as a beacon roadside device provided on each road, for example.

  Note that, when corresponding to the hardware configuration of the server 300 described above, the communication determination unit 111, the reception unit 112, the communication unit 115, the acquisition unit 116, and the request unit 117 of the communication management apparatus 110 illustrated in FIG. Each function is realized by the ROM 302, the RAM 303, the communication unit 305, and the beacon 306. Further, the storage processing unit 113 realizes its function by, for example, the CPU 301 and the ROM 302. Further, the identification information storage unit 114 realizes its function by the HD 304, for example.

(Hardware configuration of navigation device)
Next, the hardware configuration of the navigation device will be described. FIG. 4 is a block diagram illustrating a hardware configuration of the navigation apparatus. This navigation device 400 is used in a state where it is mounted on a vehicle.

  As shown in FIG. 4, the navigation apparatus 400 includes a CPU 401, a ROM 402, a RAM (memory) 403, a magnetic disk drive 404, a magnetic disk 405, an optical disk drive 406, an optical disk 407, and an audio I / F. (Interface) 408, microphone 409, speaker 410, input device 411, video I / F 412, camera 413, display 414, communication I / F 415, GPS unit 416, and various sensors 417 Consists of including. Each component 401 to 417 is connected by a bus 420.

  The CPU 401 governs overall control of the navigation device 400. The ROM 402 records programs such as a boot program, a navigation program, and a communication program. The RAM 403 is used as a work area for the CPU 401.

  The magnetic disk drive 404 controls the reading / writing of the data with respect to the magnetic disk 405 according to control of CPU401. The magnetic disk 405 records data written under the control of the magnetic disk drive 404. As the magnetic disk 405, for example, an HD (hard disk) or an FD (flexible disk) can be used.

  The optical disk drive 406 controls the reading / writing of the data with respect to the optical disk 407 according to control of CPU401. The optical disc 407 is a detachable recording medium from which data is read according to the control of the optical disc drive 406. As the optical disc 407, a writable recording medium can be used. In addition to the optical disk 407, the removable recording medium may be an MO, a memory card, or the like.

  In the case of this embodiment, an ID storage location is set in any recording area in the recording means such as the magnetic disk 405 or the optical disk 407. In this ID storage location, an ID used when the navigation apparatus 400 performs bidirectional communication with the server 300 is stored. This ID is stored in the ID storage location every time the navigation device 400 generates by a process described later. In addition, an old ID storage location is set in a recording area different from the ID storage location described above. In the old ID storage location, the erased ID is stored as a new old ID every time the ID stored in the ID storage location is erased.

  Another example of information recorded on the magnetic disk 405 or the optical disk 407 is map data used for route search / route guidance. The map data includes background data representing features (features) such as buildings, rivers, and the ground surface, and road shape data representing the shape of the road. The map data is displayed in two or three dimensions on the display screen of the display 414. Drawn. When the navigation device is guiding a route, the map data and the current vehicle location acquired by the CPU 401 are displayed in an overlapping manner.

  The audio I / F 408 is connected to a microphone 409 for audio input and a speaker 410 for audio output. The sound received by the microphone 409 is A / D converted in the sound I / F 408. In addition, sound is output from the speaker 410. Note that the voice input from the microphone 409 can be recorded on the magnetic disk 405 or the optical disk 407 as voice data.

  Examples of the input device 411 include a remote controller including a plurality of keys for inputting characters, numerical values, various instructions, a keyboard, a mouse, a touch panel, and the like. Further, the input device 411 can be connected to another information processing terminal such as a digital camera or a mobile phone terminal to input / output data.

  The video I / F 412 is connected to a camera 413 for video input and a display 414 for video output. Specifically, the video I / F 412 includes, for example, a graphic controller that controls the entire display 414, a buffer memory such as a VRAM (Video RAM) that temporarily records image information that can be displayed immediately, and a graphic controller. Based on the output image data, the display 414 is configured by a control IC that controls display.

  The camera 413 captures images inside and outside the vehicle and outputs them as image data. An image captured by the camera 413 can be recorded on the magnetic disk 405 or the optical disk 407 as image data. The display 414 displays icons, cursors, menus, windows, or various data such as characters and images. As the display 414, for example, a CRT, a TFT liquid crystal display, a plasma display, or the like can be adopted.

  The communication I / F 415 performs wireless communication with the beacon 306 (see FIG. 3), is connected to the network 310 via the beacon 306, and functions as an interface between the server 300 and the navigation apparatus 400.

  The network 310 includes a LAN, a WAN, a public line network, a mobile phone network, and the like. Specifically, the communication I / F 415 includes, for example, an FM tuner, a VICS / beacon receiver, a wireless navigation device, and other navigation devices. The communication I / F 415 receives road traffic information such as traffic congestion and traffic regulations distributed from the server 300. get. VICS is a registered trademark.

  The GPS unit 416 receives radio waves from GPS satellites and outputs information related to the positions of the vehicles 320, 330, and 340 (see FIG. 3) on which the navigation device 400 is mounted. The output information of the GPS unit 416 is used when the current position of the vehicle is calculated by the CPU 401 together with output values of various sensors 417 described later. The information indicating the current location is information for specifying one point on the map data, such as latitude / longitude and altitude.

  The various sensors 417 are vehicle speed sensors, angular velocity sensors, and the like, and output information for determining the position and behavior of the vehicle. The output values of the various sensors 417 are used by the CPU 401 to calculate the current location of the vehicle and to measure the amount of change in speed and direction.

  The beacon receiver 418 receives a beacon signal distributed from the beacon 306 (see FIG. 3) and takes it into the navigation device 400 as VICS information. This VICS information is provided with road traffic information such as traffic jams, accidents, and regulations by a road traffic information communication system (VICS). And it displays on the navigation apparatus 400 in real time.

  Note that, when corresponding to the hardware configuration of the navigation device 400 described above, the detection unit 121 of the communication terminal device 120 illustrated in FIG. 1 realizes its function by, for example, the CPU 401, the ROM 402, the RAM 403, and the various sensors 417. Further, the generation unit 122 realizes its function by the CPU 401 and the ROM 402, for example. Further, the storage processing unit 123 and the erasing unit 127 realize their functions by, for example, the CPU 401, the ROM 402, the magnetic disk drive 404, and the optical disk drive 406, respectively. Further, the identification information storage unit 124 realizes its function by the magnetic disk 405 or the optical disk 407, for example. In addition, the notification unit 125, the communication unit 126, the communication determination unit 128, and the reception unit 129 realize their functions by, for example, the CPU 401, the ROM 402, the RAM 403, and the communication I / F 415.

(Contents of bidirectional communication processing)
Next, three methods will be described as specific processing contents for performing bidirectional communication between the server 300 and the navigation device 400 having the above-described configuration.

<Method 1: Send ID from vehicle>
First, a method for notifying an ID by transmitting the ID from the navigation device 400 mounted on each of the vehicles 320, 330, and 340 to the server 300 will be described. FIG. 5 is a sequence diagram showing the contents of bidirectional communication processing using the technique 1. Here, the server 300 can execute processing with each of the vehicles 320, 330, and 340. Of these, the case of performing communication processing with the vehicle 320 will be described (hereinafter, FIG. 6 to FIG. 10). The same is true for the sequence diagram).

  In the sequence diagram of FIG. 5, first, in the vehicle 320, the engine is activated (S501) and starts running. Further, in the vehicle 320, a new ID is generated as the engine is started (S502). Thereafter, when the vehicle 320 passes the first beacon (S503), the vehicle is detected via the beacon 306. The server 300 also detects beacons by the vehicle 320. Server 300 transmits authentication information of beacon 306 in response to beacon detection by vehicle 320, and communication with vehicle 320 is established (S504).

  After communication with the server 300 is established, the vehicle 320 transmits the new ID generated in S502 to the server 300. The server 300 receives the ID transmitted from the vehicle 320 and collates it with the ID stored in the ID storage location (S505). In S505, if there is no ID corresponding to the received ID in the ID storage location, the received ID is stored as a new ID (S506). Further, the server 300 transmits a new ID acceptance confirmation to the vehicle 320 that is the transmission source of the ID as the new ID is stored.

  After S506, the vehicle 320 transmits uplink information to the server 300 using the new ID (uplink process). Specifically, when the ID is used, the server 300, when receiving the uplink information transmitted from the vehicle 320, associates the ID stored in S506 with the uplink information (S507).

  If the vehicle 320 leaves | separates from the beacon 306 after an uplink process (S508), communication with the server 300 will be once complete | finished. When the vehicle 320 passes the beacon 306 again (which may be the beacon 306 passed in S503 or another beacon 306) (S509), the server 300 detects the vehicle. The server 300 also detects beacons by the vehicle 320. Server 300 transmits authentication information of beacon 306 in response to beacon detection by vehicle 320, and communication with vehicle 320 is established (S510).

  When the server 300 and the vehicle 320 become communicable, the vehicle 320 transmits an ID to the server 300. Server 300 collates the ID transmitted from vehicle 320 (S511). The ID collation in S511 is performed in the same manner as the ID collation in S505 described above. In S511, if there is an ID corresponding to the received ID in the ID storage location, the received ID is associated with the corresponding ID (S512). The server 300 transmits an ID link confirmation to the vehicle 320 in accordance with the link process of S512.

  Through the above processing, the server 300 and the vehicle 320 are again in a communicable state. Therefore, uplink information is transmitted from the vehicle 320 to the server 300 (uplink process). When receiving the uplink information, the server 300 associates the ID with the uplink information (S513). When the vehicle 320 leaves the beacon 306 after the uplink processing (S514), the communication with the server 300 is once terminated.

  The processes of S509 to S514 described above are repeated until the engine of the vehicle 320 is stopped. When the engine of the vehicle 320 is stopped, the ID generated in S502 is deleted (S515), and the series of processes is terminated.

(Deformation process of Method 1)
Next, the deformation process of Method 1 will be described. FIG. 6 is a sequence diagram illustrating an example of the deformation process of Method 1. In the case of the deformation process of the technique 1, the vehicle 320 is a technique of performing transmission of uplink information (uplink process) simultaneously with transmission of ID. By transmitting ID and uplink information at the same time, communication efficiency can be improved. In addition, it is possible to prevent the vehicle 300 that has transmitted the ID from the beacon 306 from leaving the previous server 300 that performs uplink transmission from the server 300.

  In the sequence diagram of FIG. 6, as in the case of FIG. 5, first, the engine is started (S601) and starts running. Further, in the vehicle 320, a new ID is generated as the engine is started (S602). Thereafter, when the vehicle 320 passes the first beacon (S603), the vehicle is detected via the beacon 306. The server 300 also detects beacons by the vehicle 320. The server 300 transmits the authentication information of the beacon 306 in response to beacon detection by the vehicle 320, and communication with the vehicle 320 is established (S604).

  After communication with the server 300 is established, the vehicle 320 transmits the new ID generated in S602 to the server 300. Moreover, the vehicle 320 transmits uplink information with ID (uplink process). The server 300 receives the ID transmitted from the vehicle 320 and the uplink information, and first collates with the ID stored in the ID storage location (S605). If there is no ID corresponding to the received ID in the ID storage location in S505, the received ID is stored as a new ID (S606). Then, the server 300 associates the ID stored in S606 with the received uplink information (S607), and transmits a new ID acceptance confirmation to the vehicle 320.

  If the vehicle 320 leaves | separates from the beacon 306 after an uplink process (S608), communication with the server 300 will be once complete | finished. When the vehicle 320 passes again the beacon 306 (the beacon 306 passed in S603 or another beacon 306 may be used) (S609), the server 300 detects the vehicle. The server 300 also detects beacons by the vehicle 320. Server 300 transmits authentication information of beacon 306 in response to beacon detection by vehicle 320, and communication with vehicle 320 is established (S610).

  When server 300 and vehicle 320 are in a communicable state, vehicle 320 transmits an ID and uplink information to server 300. The server 300 first collates the ID transmitted from the vehicle 320 (S611). The ID collation in S611 is performed in the same manner as the ID collation in S605 described above. In S511, if there is an ID corresponding to the received ID in the ID storage location, the received ID and the uplink information are associated with the corresponding ID (S612). The server 300 transmits an ID acceptance confirmation to the vehicle 320 in accordance with the process of S612. If the vehicle 320 leaves | separates from the beacon 306 after the above-mentioned uplink process (S613), it will once complete | finish communication with the server 300. FIG.

  The processes of S609 to S613 described above are repeated until the engine of the vehicle 320 is stopped. When the engine of the vehicle 320 is stopped, the ID generated in S602 is deleted (S614), and the series of processes is terminated.

<Method 2: Server connects to ID storage location of navigation device>
Next, a method in which the server 300 obtains an ID by connecting to the ID storage location of the navigation device 400 will be described. FIG. 7 is a sequence diagram showing the contents of bidirectional communication processing using the method 2.

  In the sequence diagram of FIG. 7, first, in the vehicle 320, the engine is activated (S701) and starts running. Further, in the vehicle 320, a new ID is generated as the engine is started (S702). Thereafter, when the vehicle 320 passes the first beacon (S703), the vehicle is detected via the beacon 306. In addition, the server 300 also detects beacons by the vehicle 320. The server 300 transmits the authentication information of the beacon 306 in response to beacon detection by the vehicle 320, and communication with the vehicle 320 is established (S704).

  After the communication is established, the server 300 accesses the memory of the vehicle 320 in order to acquire the ID of the communication partner vehicle 320. This memory is a recording area set as an ID storage location in the recording means (magnetic disk 405, optical disk 407) of the navigation device 400 of the vehicle 320. In particular, in the case of the method 2, the memory is set in a state that the server 300 can freely access.

  And since the ID produced | generated by S702 is stored in the ID storage location of the navigation apparatus 400 mounted in the vehicle 320, the server 300 acquires ID. Then, the acquired ID is collated with the ID stored in the ID storage location (S705). If there is no ID corresponding to the received ID in the ID storage location in S705, the received ID is stored as a new ID (S706). Further, the server 300 transmits a new ID acceptance confirmation to the vehicle 320 that is the transmission source of the ID as the new ID is stored.

  After S706, the vehicle 320 transmits uplink information to the server 300 using the new ID (uplink process). Specifically, when the ID is used, when the uplink information is transmitted from the vehicle 320, the server 300 associates the ID stored in S706 with the uplink information (S707).

  If the vehicle 320 leaves | separates from the beacon 306 after an uplink process (S708), communication with the server 300 will be once complete | finished. When the vehicle 320 passes again the beacon 306 (the beacon 306 passed in S703 or another beacon 306 may be used) (S709), the server 300 detects the vehicle. The server 300 also detects beacons by the vehicle 320. The server 300 transmits the authentication information of the beacon 306 in response to beacon detection by the vehicle 320, and communication with the vehicle 320 is established (S710).

  After the communication is established, the server 300 accesses the memory of the vehicle 320 again in order to acquire the ID of the communication partner vehicle 320. And since the ID produced | generated by S702 is stored in the ID storage location of the navigation apparatus 400 mounted in the vehicle 320, the server 300 acquires ID. Then, the acquired ID is collated with the ID stored in the ID storage location (S711).

  The ID collation in S711 described above is performed in the same manner as the ID collation in S705 described above. In S711, if there is an ID corresponding to the received ID in the ID storage location, the received ID is associated with the corresponding ID (S712). The server 300 transmits an ID acceptance confirmation to the vehicle 320 in association with the linking process in S712.

  Through the above processing, the server 300 and the vehicle 320 are again in a communicable state. Therefore, uplink information is transmitted from the vehicle 320 to the server 300 (uplink process). When receiving the uplink information, the server 300 associates the ID with the uplink information (S713). When the vehicle 320 leaves the beacon 306 after the uplink processing (S714), the communication with the server 300 is temporarily terminated.

  The processes of S709 to S714 described above are repeated until the engine of the vehicle 320 is stopped. When the engine of the vehicle 320 is stopped, the ID generated in S702 is deleted (S715), and the series of processes is terminated.

(Deformation process of Method 2)
Next, the deformation process of Method 2 will be described. FIG. 8 is a sequence diagram illustrating an example of the deformation process of the method 2. Similarly to the deformation process of Method 1, in the deformation process of Method 2, the vehicle 320 transmits the uplink information simultaneously with the transmission of the ID.

  In the sequence diagram of FIG. 8, as in the case of FIG. 7, first, the engine is started (S801) and starts running. Further, in the vehicle 320, a new ID is generated as the engine is started (S802). Thereafter, when the vehicle 320 passes the first beacon (S803), the vehicle is detected via the beacon 306. The server 300 also detects beacons by the vehicle 320. Server 300 transmits authentication information of beacon 306 in response to beacon detection by vehicle 320, and communication with vehicle 320 is established (S804).

  After the communication is established, the server 300 accesses the memory of the vehicle 320 in order to acquire the ID of the communication partner vehicle 320. And since the ID produced | generated by S802 is stored in the ID storage location of the navigation apparatus 400 mounted in the vehicle 320, the server 300 acquires ID. Server 300 receives uplink information transmitted (uplink processing) from vehicle 320 along with the acquisition of the ID.

  Then, the acquired ID is collated with the ID stored in the ID storage location (S805). In S805, when there is no ID corresponding to the received ID in the ID storage location, the received ID is stored as a new ID (S806). Further, the server 300 associates the ID stored in S806 with the received uplink information (S807), and transmits a new ID acceptance confirmation to the vehicle 320 that is the ID transmission source.

  If the vehicle 320 leaves | separates from the beacon 306 after an uplink process (S808), communication with the server 300 will once be complete | finished. When the vehicle 320 passes again the beacon 306 (the beacon 306 passed in S803 or another beacon 306 may be used) (S809), the vehicle is detected by the server 300. The server 300 also detects beacons by the vehicle 320. The server 300 transmits authentication information of the beacon 306 in response to beacon detection by the vehicle 320, and communication with the vehicle 320 is established (S810).

  After the communication is established, the server 300 accesses the memory of the vehicle 320 again in order to acquire the ID of the communication partner vehicle 320. And since the ID produced | generated by S702 is stored in the ID storage location of the navigation apparatus 400 mounted in the vehicle 320, the server 300 acquires ID. Simultaneously with acquiring the ID, uplink information transmitted (uplink processing) from the vehicle 320 is received. Then, the acquired ID is collated with the ID stored in the ID storage location (S811).

  The ID collation in S811 described above is performed in the same manner as the ID collation in S805 described above. In S811, if there is an ID corresponding to the received ID in the ID storage location, the received ID and the uplink information are linked to the corresponding ID (S812). The server 300 transmits an ID acceptance confirmation to the vehicle 320 in accordance with the process of S812. If the vehicle 320 leaves | separates from the beacon 306 after the above-mentioned uplink process (S813), it will once complete | finish communication with the server 300. FIG.

  The processes of S809 to S813 described above are repeated until the engine of the vehicle 320 is stopped. When the engine of the vehicle 320 is stopped, the ID generated in S802 is deleted (S814), and the series of processes is terminated.

<Method 3: Server sends ID request>
Next, a technique for requesting the server 300 to give an ID to the navigation device 400 of the vehicle 320 will be described. FIG. 9 is a sequence diagram showing the contents of bidirectional communication processing using the method 3.

  In the sequence diagram of FIG. 9, first, an ID request is transmitted from the server 300 to the vehicle 320. This ID request is always transmitted without specifying the other party, and is also transmitted to the vehicle 330 and the vehicle 340 that do not execute the communication process. On the other hand, in the vehicle 320, the engine is activated (S901) and starts running. Further, in the vehicle 320, a new ID is generated as the engine is started (S902). Thereafter, when the vehicle 320 passes through the first beacon (S903), the vehicle is detected via the beacon 306. The server 300 also detects beacons by the vehicle 320. Server 300 transmits authentication information of beacon 306 in response to beacon detection by vehicle 320, and communication with vehicle 320 is established (S904).

  After the communication is established, the vehicle 320 receives the ID request (S905), and transmits the ID generated in S902 to the server 300. The server 300 receives the ID transmitted from the vehicle 320 and collates it with the ID stored in the ID storage location (S906). If there is no ID corresponding to the received ID in the ID storage location in S906, the received ID is saved as a new ID (S907). Further, the server 300 transmits a new ID acceptance confirmation to the vehicle 320 that is the transmission source of the ID as the new ID is stored.

  After S907, the vehicle 320 transmits uplink information to the server 300 using the new ID (uplink process). Specifically, when the ID is used, when the uplink information is transmitted from the vehicle 320, the server 300 associates the ID stored in S907 with the uplink information (S908).

  If the vehicle 320 leaves | separates from the beacon 306 after an uplink process (S909), communication with the server 300 will be once complete | finished. It should be noted that the ID request is continuously transmitted from the server 300 even after the communication is completed. When the vehicle 320 passes again the beacon 306 (the beacon 306 passed in S903 or another beacon 306 may be used) (S910), the server 300 detects the vehicle. The server 300 also detects beacons by the vehicle 320. The server 300 transmits authentication information of the beacon 306 in response to beacon detection by the vehicle 320, and communication with the vehicle 320 is established (S911).

  After the communication is established, the vehicle 320 receives the ID request (S912), and transmits the ID generated in S902 to the server 300. The server 300 receives the ID transmitted from the vehicle 320 and collates it with the ID stored in the ID storage location (S913). The ID collation in S913 is performed in the same manner as the ID collation in S906 described above. In S913, if there is an ID corresponding to the received ID in the ID storage location, the received ID is linked to the corresponding ID (S914). The server 300 transmits an ID acceptance confirmation to the vehicle 320 in association with the linking process in S712.

  Through the above processing, the server 300 and the vehicle 320 are again in a communicable state. Therefore, uplink information is transmitted from the vehicle 320 to the server 300 (uplink process). When receiving the uplink information, the server 300 associates the ID with the uplink information (S915). When the vehicle 320 leaves the beacon 306 after the uplink processing (S916), the communication with the server 300 is temporarily terminated.

  The processes of S910 to S915 described above are repeated until the engine of the vehicle 320 is stopped. When the engine of the vehicle 320 is stopped, the ID generated in S902 is deleted (S917), and the series of processes is terminated.

(Deformation process of Method 3)
Next, the deformation process of Method 3 will be described. FIG. 10 is a sequence diagram illustrating an example of the deformation process of the method 3. In the deformation process of the method 3, the vehicle 320 transmits the uplink information simultaneously with the transmission of the ID, similarly to the deformation process of the methods 1 and 2.

  In the sequence diagram of FIG. 10, first, an ID request is transmitted from the server 300 to the vehicle 320. On the other hand, in vehicle 320, the engine is activated (S1001) and starts running. Further, in the vehicle 320, a new ID is generated as the engine is started (S1002). Thereafter, when the vehicle 320 passes the first beacon (S1003), the vehicle is detected via the beacon 306. The server 300 also detects beacons by the vehicle 320. The server 300 transmits authentication information of the beacon 306 in response to beacon detection by the vehicle 320, and communication with the vehicle 320 is established (S1004).

  After the communication is established, when receiving an ID request (S1005), the vehicle 320 transmits the ID generated in S1002 to the server 300. Further, the server 300 transmits uplink information together with the ID (uplink process). The server 300 receives the ID transmitted from the vehicle 320 and the uplink information, and first collates with the ID stored in the ID storage location (S1006). If there is no ID corresponding to the received ID in the ID storage location in S1006, the received ID is stored as a new ID (S1007). Then, the server 300 associates the ID stored in S1007 with the received uplink information (S1008), and transmits a new ID acceptance confirmation to the vehicle 320.

  If the vehicle 320 leaves | separates from the beacon 306 after an uplink process (S1009), communication with the server 300 will be once complete | finished. It should be noted that the ID request is continuously transmitted from the server 300 even after the communication is completed. When the vehicle 320 passes again the beacon 306 (the beacon 306 passed in S1003 or another beacon 306 may be used) (S1010), the vehicle is detected by the server 300. The server 300 also detects beacons by the vehicle 320. The server 300 transmits the authentication information of the beacon 306 in response to beacon detection by the vehicle 320, and communication with the vehicle 320 is established (S1011).

  After the communication is established, when the vehicle 320 receives the ID request (S1012), the vehicle 320 transmits the ID generated in S902 and the uplink information to the server 300. The server 300 receives the ID transmitted from the vehicle 320 and the uplink information, and first collates with the ID stored in the ID storage location (S1013). The ID collation in S1013 is performed in the same manner as the ID collation in S1006 described above. If there is an ID corresponding to the received ID in the ID storage location in S1013, the received ID and the uplink information are associated with the corresponding ID (S1014). The server 300 transmits an ID acceptance confirmation to the vehicle 320 in accordance with the process of S1014. If the vehicle 320 leaves | separates from the beacon 306 after the above-mentioned uplink process (S1015), it will once complete | finish communication with the server 300. FIG.

  The processes of S1010 to S1015 described above are repeated until the engine of the vehicle 320 is stopped. When the engine of the vehicle 320 is stopped, the ID generated in S1002 is deleted (S1016), and the series of processes is terminated.

(Receiving process of information addressed to deleted ID)
As described above, in this embodiment, the navigation device 400 mounted on each vehicle temporarily generates an ID, notifies the server 300 of the ID, and then implements bidirectional communication based on the ID. To do. However, it is assumed that the navigation apparatus 400 cannot receive the data transmitted from the server 300 after the ID is deleted when the vehicle engine is stopped. Therefore, a reception process of the navigation device 400 for receiving information transmitted to the erased ID while protecting personal information will be described.

  FIG. 11 is a flowchart showing the contents of the reception process of the information addressed to the deleted ID. In the flowchart of FIG. 11, it is first determined whether or not the engine has been turned off (step S1101). Here, the process waits until the engine is turned off (step S1101: No loop), and if the engine is turned off (step S1101: Yes), the old ID is transferred to the old ID storage location (step S1102).

  Next, it is determined whether or not the engine is turned on (step S1103). Again, waiting until the engine is turned on (step S1103: No loop). If the engine is turned on (step S1103: Yes), a new ID is acquired and stored in the ID storage location (step S1104).

  Then, it is determined whether information delivery for ID other than the current ID (new ID stored in step S1104) has been received from the server 300 (step S1105). Here, when the information distribution for IDs other than the current ID has not been received (step S1105: No), the series of processing is terminated as it is. Therefore, the navigation apparatus 400 performs bidirectional communication using the new ID.

  On the other hand, if information distribution for IDs other than the current ID is received in step S1105 (step S1105: Yes), does the ID included in this information distribution match the old ID stored in the old ID storage location? It is determined whether or not (step S1106). Here, if the IDs do not match (step S1106: No), the series of processing ends.

  On the other hand, if the IDs match in step S1106 (step S1106: Yes), the distributed information is acquired (step S1107). And it transfers to the process for performing the bidirectional | two-way communication by the server 300 and old ID.

  First, it is determined whether or not the communication of the current ID has been disconnected (step S1108). If communication of the current ID is disconnected (step S1108: Yes), the process proceeds to step S1110 as it is. On the other hand, when the communication of the current ID is not disconnected (step S1108: No), the communication is disconnected (step S1109).

  After the current ID communication is disconnected (step S1109) or when the current ID is disconnected (step S1108: Yes), communication with the old ID is then established (step S1110). Then, an acquisition confirmation is returned to the server 300 (step S1111). The reply process in step S1111 is performed using the old ID. When the reply in step S1111 is completed, the communication using the old ID is finally disconnected (step S1112), and the series of processing ends. Note that step S1107 for acquiring information may be performed after step S1110 for establishing a connection with the old ID.

  As described above, in this embodiment, the traveling vehicle can be temporarily specified by the ID. Since this ID is an ID generated and temporarily set by the navigation device 400, the vehicles 320, 330, and 340 equipped with the navigation device 400 can prevent an individual from being identified.

  Further, by storing the ID deleted when the engine is stopped as the old ID in a predetermined old ID storage location, the data collected by the server 300 using the VICS can be stored in a specific vehicle (for example, the vehicle 320). ) Feedback. Specifically, information relating to traffic jams can be appropriately distributed in accordance with the driving situation for each vehicle.

  Thus, according to the communication terminal device, the communication method, the communication program, and the computer-readable recording medium according to the present invention, both personal information protection and information feedback can be achieved.

  Note that the communication method described in this embodiment can be realized by executing a program prepared in advance on a computer such as a personal computer or a workstation. This program is recorded on a computer-readable recording medium such as a hard disk, a flexible disk, a CD-ROM, an MO, and a DVD, and is executed by being read from the recording medium by the computer. The program may be a transmission medium that can be distributed via a network such as the Internet.

DESCRIPTION OF SYMBOLS 110 Communication management apparatus 111 Communication determination part 112 Reception part 113 Storage processing part 114 Identification information storage part 115 Communication part 116 Acquisition part 117 Request part 120 Communication terminal device 121 Detection part 122 Generation part 123 Storage processing part 124 Identification information storage part 125 Information Unit 126 Communication unit 127 Erasing unit 128 Communication determining unit 129 Accepting unit

Claims (7)

A communication terminal device located in the communication area of the communication management device,
Detection means for detecting the start and stop of the own device;
A first storage means for storing identification information of the own apparatus in a first identification information storage section when the detection means detects a stop of the own apparatus;
Generating means for newly generating identification information of the own apparatus when the detecting means detects activation of the own apparatus;
Second storage means for storing new identification information generated by the generation means in a second identification information storage unit;
Based on the new identification information stored in the second identification information storage unit, when transmitting / receiving information to / from the communication management device and receiving identification information other than the new identification information, the first It is determined whether or not it matches the identification information stored in the identification information storage unit. If they match, based on the identification information stored in the first identification information storage unit, the communication management device and the information A communication means for transmitting and receiving;
Communication terminal apparatus comprising the. Comprising communication determining means for determining whether or not communication with the communication management device has been established;
The communication according to claim 1, wherein when the communication determination unit determines that communication with the communication management device has been established, the notification unit notifies the communication management device of the identification information. Terminal device. From the communication management device, comprising a receiving means for receiving a request signal for requesting to transmit the identification information,
The communication terminal device according to claim 1, wherein the notification unit notifies the identification information to a communication management device that has transmitted the request signal. An erasure unit for erasing the identification information from the identification information storage unit when the detection unit detects a stop of the device;
After the identification information stored in the identification information storage unit is erased by the erasing unit, the identification information erased by the storage processing unit is stored in the identification information storage unit as the old identification information, and then the detection unit Detects the startup of its own device,
The storage processing means stores, in the identification information storage unit, identification information different from the deleted identification information given from the communication management apparatus with which communication has been established, as new identification information of the own apparatus. The communication terminal device according to any one of claims 1 to 3. A communication method of a communication terminal device located in a communication area of a communication management device,
A detection step of detecting the start and stop of the own device;
A first storage processing step of storing the identification information of the own device in a first identification information storage unit when the stop of the own device is detected in the detection step;
When detecting the activation of the own device in the detection step, a generation step for newly generating identification information of the own device;
A second storage processing step of storing new identification information generated in the generation step in a second identification information storage unit;
Based on the new identification information stored in the second identification information storage unit, when transmitting / receiving information to / from the communication management device and receiving identification information other than the new identification information, the first It is determined whether or not it matches the identification information stored in the identification information storage unit. If they match, based on the identification information stored in the first identification information storage unit, the communication management device and the information A communication process for sending and receiving,
The communication method characterized by including.   A communication program for causing a computer to execute the communication method according to claim 5.   A computer-readable recording medium having the communication program according to claim 6 recorded thereon.

Images