WO2008056701A1

WO2008056701A1 - Broadcast distribution device, communication terminal device, communication processing method, communication processing program, and computer-readable recording medium

Info

Publication number: WO2008056701A1
Application number: PCT/JP2007/071639
Authority: WO
Inventors: Hiroaki Shibasaki
Original assignee: Pioneer Corporation
Priority date: 2006-11-10
Filing date: 2007-11-07
Publication date: 2008-05-15

Abstract

A broadcast distribution device (110) includes a generation unit (111) which generates an identifier as a broadcast distribution address containing information indicating a condition and distributes distribution information from a distribution unit (112) to a communication terminal device (120) by using the identifier. The communication terminal device (120) stores the distribution information distributed from the broadcast distribution device (110), in a storage unit (121). An acquisition unit (122) references the identifier of the distribution information so as to acquire the condition specified as a distribution destination of the distribution information. A judging unit (123) judges whether the condition matches with the local device. If the judging unit (123) judges that the condition does not match, an information processing unit (124) discards the distribution information from the storage unit (121).

Description

Specification

Broadcast distribution device, communication terminal device, communication processing method, communication processing program, and computer-readable recording medium

Technical field

The present invention relates to a broadcast distribution device, a communication terminal device, a communication processing method, a communication processing program, and a computer-readable recording medium that perform broadcast distribution. However, the use of the present invention is not limited to the above-described broadcast delivery device, communication terminal device, communication processing method, communication processing program, and computer-readable recording medium.

Background art

Conventionally, a plurality of groups (terminal groups) exist in a terminal device on a network for performing communication processing. As described above, each communication terminal is generally configured to belong to one or a plurality of loops. On the other hand, there are terminals that do not belong to any group. These groups include, for example, groups of terminals corresponding to specific functions and services. In order to distribute such information for specific functions and services directly to all terminals belonging to the group using the broadcast IP address, a mechanism using the broadcast IP address that can be sent by specifying the group is required. It is assumed. Therefore, for example, a system is disclosed in which each communication terminal downloads a program distributed by broadcast transmission (for example, see Patent Document 1 below).

Patent Document 1: Japanese Patent Laid-Open No. 11 175347

Disclosure of the invention

Problems to be solved by the invention

[0004] Here, if each communication terminal always belongs to only one group, the group selection is not necessary, and it may be broadcast to the group to which it belongs. However, if the communication terminal belongs to multiple groups, it cannot be broadcasted easily. In other words, assuming that a communication terminal has a plurality of functions and a group that enjoys the function for each function is configured, for example, function A is installed in all products of a certain manufacturer. The functions of each communication terminal belonging to each group are such that there are only some products. Each ability may be different.

[0005] In the case described above, the information distribution for function A selects the group to which the communication terminal having function A belongs, and the information distribution for function B selects the group to which the communication terminal having function B belongs. It will be. In other words, even for broadcast transmission from the same communication terminal, it is necessary to select a transmission destination group and a distribution destination communication terminal one by one depending on the purpose (function). Is given as an example.

Means for solving the problem

[0006] The broadcast distribution device according to the invention of claim 1 is a broadcast distribution device that distributes information for distribution (hereinafter referred to as "distribution information") to communication terminal devices that meet specified conditions. Generating means for generating identification information including information representing the condition, and distributing means for distributing the distribution information to the communication terminal device using the identification information generated by the generating means. It is characterized by that.

[0007] Further, the communication terminal device according to the invention of claim 5 is a communication terminal device that receives the distribution information transmitted from the broadcast distribution device, and that distributes the distribution information distributed from the broadcast distribution device. The storage means for storing, the acquisition means for acquiring the condition designated as the distribution destination of the distribution information with reference to the identification information of the distribution information, and the condition acquired by the acquisition means match the own device Determination means for determining whether or not the above conditions are not met by the determination means! And information processing means for discarding the distribution information from the storage means It is characterized by.

[0008] Further, the communication processing method according to the invention of claim 11 is a broadcast distribution device that distributes information for distribution (hereinafter referred to as "distribution information") simultaneously to communication terminal devices that meet a specified condition. A generation step of generating identification information including information representing the condition, and a distribution step of distributing the distribution information to the communication terminal device using the identification information generated by the generation step It is characterized by including these.

[0009] Further, the communication processing method according to the invention of claim 12 is a communication processing method of a communication terminal device that receives distribution information transmitted from a broadcast distribution device, and is distributed from the broadcast distribution device. A storage step of storing the distribution information in a predetermined storage means, and an acquisition method for acquiring a condition designated as a distribution destination of the distribution information with reference to the identification information of the distribution information. And determining whether or not the condition acquired by the acquisition step matches the own device, and determining whether the condition does not match the own device by the determining step. And an information processing step of discarding information from the storage means.

[0010] Further, a communication processing program that is advantageous for the invention of claim 13 causes a computer to execute the communication processing method according to claim 11 or 12.

[0011] In addition, a computer-readable recording medium that provides the power of the invention of claim 14 records the communication processing program according to claim 13.

Brief Description of Drawings

FIG. 1 is an explanatory diagram showing a configuration of a broadcast distribution system.

[FIG. 2-1] FIG. 2-1 is a flowchart showing the contents of the distribution process of the broadcast distribution apparatus.

[FIG. 2-2] FIG. 2-2 is a flowchart showing the contents of reception processing of the communication terminal apparatus.

FIG. 3 is an explanatory diagram showing the configuration of the broadcast distribution system in the present embodiment.

FIG. 4 is a block diagram illustrating an example of a hardware configuration of the navigation device.

[FIG. 5] FIG. 5 is a flowchart for explaining the broadcast delivery processing of the delivery-side navigation device.

[FIG. 6] FIG. 6 is a flowchart showing the contents of reception processing of the navigation device on the receiving side.

Explanation of symbols

[0013] 110 Broadcast Distribution Device

111 Generator

112 Distribution Department

120 Communication terminal equipment

121 Memory

122 Acquisition Department

123 Judgment part

124 Information processing department

125 Reply part BEST MODE FOR CARRYING OUT THE INVENTION

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

[0015] (System configuration)

First, the configuration of a broadcast delivery system using the broadcast delivery device and the communication terminal device according to the present embodiment will be described. FIG. 1 is an explanatory diagram showing the configuration of the broadcast distribution system. As shown in FIG. 1, the broadcast distribution system includes a broadcast distribution device 110 and a communication terminal device 120.

The broadcast distribution device 110 acquires information for distribution (hereinafter referred to as “distribution information”) and conditions of the communication terminal device 120 that distributes the distribution information from the information distribution source. Then, the broadcast distribution device 110 generates identification information including information representing the acquired condition, and distributes the distribution information to the communication terminal device 120 using the generated identification information. The communication terminal device 120 receives the information distributed from the broadcast distribution device 110, compares the conditions included in the identification information with its own device, and if it matches, holds the distribution information as it is, If they do not match, the distribution information is discarded.

[0017] Communication terminal device 120 can form an arbitrary group of devices. FIG. 1 illustrates the case where communication terminal apparatuses 120 form groups A and B. As shown in FIG. 1, the communication terminal device 120 can belong to any group. Also, one communication terminal device 120 can belong to a plurality of groups. Further, since the loop can be arbitrarily formed, the user of the communication terminal device 120 can set a new group (for example, group C). The functional configuration and processing contents of each device constituting the broadcast distribution system described above will be described in order below.

[0018] (Functional Configuration of Broadcast Distribution Device)

First, the functional configuration of the broadcast distribution device 110 will be described with reference to FIG. The broadcast delivery device 110 delivers delivery information all at once to the communication terminal devices 120 that meet the specified conditions. The broadcast delivery device 110 includes a generation unit 111 and a delivery unit 112 as shown in FIG. The generation unit 111 generates identification information including information representing a condition. The information indicating the condition is information for specifying the communication terminal device 120 that is to receive the distribution information. Specifically, information regarding a group to which the communication terminal apparatus 120 belongs and information regarding an information processing function provided in the communication terminal apparatus 120 are information representing conditions. Then, the communication terminal device 120 that satisfies this condition is the communication terminal device 120 that wants to receive the distribution information.

[0020] The generation unit 111 can also generate the identification information as a broadcast distribution address.

In general, when delivering distribution information to a plurality of communication terminal devices 120 at the same time, a dedicated address representing broadcast delivery is used. By using this broadcast distribution address, communication terminal device 120 on the receiving side can determine whether or not the received distribution information is information that has been broadcast. Therefore, the generation unit 111 may be configured to uniquely generate identification information as an address for broadcast distribution when receiving distribution information for broadcast distribution from a user.

Note that the information regarding gnole is information for identifying a gnole formed by communication terminal apparatus 120. Examples of the group include a group composed of products of the same model in the communication terminal device 120 and a group composed of products of the same manufacturer in the communication terminal device 120. In addition to the group depending on the attribute of the communication terminal device 120 as described above, it may be a group arbitrarily set by the user.

[0022] The information related to the information processing function is, for example, the following information.

• Attribute information of communication terminal device 120

• Information on applications installed in communication terminal device 120

• Hardware configuration information of communication terminal device 120

Distribution unit 112 distributes distribution information to communication terminal apparatus 120 using the broadcast distribution address generated by generation unit 111. In FIG. 1, the distribution unit 112 exemplifies the case of performing wireless communication! /, But the distribution unit for distributing the distribution information by the distribution unit 112 may be wired wireless. Even if it is wired, the broadcast distribution system of the present embodiment can be applied to a network that performs simultaneous distribution such as a wireless broadcast wave.

[0024] (Functional configuration of communication terminal device) Next, the functional configuration of communication terminal apparatus 120 will be described using FIG. The communication terminal device 120 receives the distribution information transmitted from the broadcast distribution device 110, and as shown in FIG. 1, the storage unit 121, the acquisition unit 122, the determination unit 123, the information processing unit 124, and the reply Part 125.

Storage unit 121 stores distribution information distributed from broadcast distribution apparatus 110. The distribution information stored in the storage unit 121 is held as reception information of the communication terminal device 120.

[0026] The acquisition unit 122 refers to the identification information of the distribution information stored in the storage unit 121, and acquires the condition specified as the communication terminal device 120 that is the distribution destination of the distribution information. In addition, when the distribution information includes a broadcast distribution address, the acquisition unit 122 refers to this address and acquires the condition specified as the communication terminal device 120 to which the distribution information is distributed. . Note that the conditions acquired from the identification information and the address include the functions to which the communication terminal device 120 belongs and the communication terminal device 120, as described in the description of the broadcast distribution device 110. Etc. are specified! /

[0027] The determination unit 123 determines whether or not the condition acquired by the acquisition unit 122 matches the own device (communication terminal device 120). For example, when the acquisition unit 122 acquires information about a group as a condition of the communication terminal device 120 that is a distribution destination, the determination unit 123 determines whether the group power S indicated by the acquired information about the loop and the group to which the device belongs. Judge whether it matches. In addition, when the acquisition unit 122 acquires information on a predetermined information processing function as a condition of the communication terminal device 120 that is a distribution destination, the determination unit 123 indicates that the information processing function indicated by the acquired information on the information processing function is Judgment is made on whether or not it matches the information processing function of the device itself.

The information processing unit 124 receives the determination result of the determination unit 123. The received determination result is stored in the storage unit 121 when it is determined that the condition acquired by the acquisition unit 122 does not match the own device (communication terminal device 120)! /. Discard delivery information.

The reply unit 125 receives the determination result of the determination unit 123. When the received determination result indicates that the condition acquired by the acquisition unit 122 matches the own device (communication terminal device 120)! /, The address of the own device (address of the communication terminal device 120) ) Is sent to the broadcast delivery device 110 that is the sender of the delivery information. To do. That is, the reply unit 125 performs a process of transmitting a reception confirmation to the broadcast distribution device 110 that is the distribution source of the distribution information. Whether or not the reply information is transmitted by the reply unit 125 can be arbitrarily set by the user. Therefore, the configuration of the reply unit 125 is not essential for the communication terminal device 120! /.

[0030] As described above, communication terminal apparatus 120, once receiving the distribution information, determines whether or not the distribution information is information for which the own apparatus is the distribution destination. However, the distribution information reception procedure in communication terminal apparatus 120 is not uniform. For example, a procedure for receiving a part of distribution information (for example, only a header part including identification information and an address) first is widely used.

[0031] The procedure for receiving a part of the distribution information is, for example, that the capacity of the storage unit 121 of the communication terminal device 120 is limited, and unnecessary distribution information (don't use the own device as the distribution destination! /, Distribution information). This is used when there is no room to remember even temporarily. Also, when a communication fee is generated in proportion to the amount of information received by the communication terminal device 120, a procedure for receiving a part of the distribution information is used to prevent unnecessary reception of the distribution information. Is

[0032] In the case of the procedure for receiving a part of the distribution information as described above, a process different from the procedure for receiving the distribution information once is required. That is, when it is determined that the distribution information is information with the own device as the transmission destination, processing for receiving the remaining distribution information is performed.

Specifically, when distribution information is distributed from the broadcast distribution device 110, the storage unit 121 stores only a part of information including identification information and an address in the distribution information. Then, the acquisition unit 122 acquires the conditions of the communication terminal device 120 serving as a distribution destination from the identification information and address of the distribution information recorded by the storage unit 121 as usual. After that, the determination unit 123 determines whether the condition matches its own device, and if the determination result matches the condition acquired by the acquisition unit 122, the information processing unit 124 stores the distribution information. The remaining distribution information that has not been received is received and stored in the storage unit 121. If the judgment result does not match! /, A part of the distribution information stored in the storage unit 121 by the information processing unit 124 is discarded.

[0034] (Contents of distribution processing of broadcast distribution device) Next, the contents of the distribution process of the broadcast distribution apparatus will be described. Fig. 2-1 is a flowchart showing the contents of the delivery processing of the broadcast delivery device. In the flowchart shown in Figure 2-1, first, it is determined whether or not distribution information has been acquired from the information distribution source (step S21 Do: wait until distribution information is acquired (step S211: No loop). When the distribution information is acquired (step S211: Yes), it is next determined whether or not the conditions of the communication terminal device 120 as the distribution destination have been acquired (step S212).

[0035] In step S212, the process waits until the condition of communication terminal device 120 is acquired (step S212: No loop). When the condition is acquired (step S212: Yes), information indicating the condition acquired in generation unit 111 is displayed. An address for broadcast delivery is generated (step S213). Finally, the distribution information is distributed using the address generated from the distribution unit 112 (here, the case where the identification information is generated as an address for broadcast distribution is described as an example) (step S214), and a series of distribution processing is performed. finish.

[0036] (Contents of reception processing of communication terminal device)

Next, the contents of the reception process of the communication terminal device will be described. Fig. 2-2 is a flowchart showing the contents of the reception processing of the communication terminal device. In the flowchart of FIG. 2-2, it is determined whether or not distribution information has been received from the broadcast distribution device 110 (step S222). Here, the process waits until the delivery information is received (step S221: No loop). When the delivery information is received (step S221: Yes), the delivery information is stored in the storage unit 121 (step S222).

Next, the acquisition unit 122 refers to the address of the distribution information stored in the storage unit 121 and acquires the condition of the communication terminal device 120 designated as the distribution information distribution destination (step S223). Then, the determination unit 123 determines whether or not the acquired condition matches the own device (communication terminal device 120)! / (Step S224).

[0038] If it is determined in step S224 that the conditions match with the own apparatus (step S224: Yes), the own apparatus is the distribution destination of distribution information, and is stored in the storage unit 121. The distribution information is retained as it is, and the reply information indicating that the distribution information has been distributed is transmitted from the reply unit 125 to the broadcast distribution device 110 (step S225), and the series of reception processing ends.

[0039] On the other hand, if it is determined in step S224 that the device does not match the conditions. (Step S224: No), the information processing unit 124 discards the distribution information stored in the storage unit 121 (Step S226) and performs a series of reception processes because the device itself is not the distribution information distribution destination. finish.

[0040] As described above, in the present embodiment, only the communication terminal device 120 that meets the specified conditions can receive the distributed distribution information from the broadcast distribution device 110. Strictly speaking, the communication terminal device 120 that does not meet the conditions also receives the distribution information once, but is discarded by the information processing unit 124 and cannot be held as received information. In order for the broadcast delivery device 110 to specify the delivery destination, it is not necessary to set the address of the individual communication terminal device 120 by simply specifying the conditions of the delivery destination communication terminal device 120. Thus, in the present embodiment, broadcast delivery can be performed only to a specific communication terminal device 120 by an easy procedure.

[0041] Further, in the present embodiment, the force S described separately for the broadcast delivery device 110 specialized for the broadcast delivery function and the communication terminal device 120 specialized for the delivery function of the delivery information. The functions of these two devices can be configured as a single communication device.

Example

[0042] (Broadcast distribution system configuration)

FIG. 3 is an explanatory diagram showing the configuration of the broadcast distribution system in the present embodiment. This system uses the navigation device 400, which has the functions of both the broadcast distribution device 110 and the communication terminal device 120, which is effective for the present embodiment, and uses only the devices that meet the specified conditions. Broadcast distribution between the navigation devices that are the distribution destinations.

In FIG. 3, each of the vehicles A to F is equipped with a navigation device.

When the passengers of vehicles A to F perform broadcast distribution using the navigation device, the distribution information is first transmitted to base station 300. Then, the distribution information is transmitted all at once from the base station 300 to each vehicle (vehicle A to vehicle F in this case) located within the distributable range (distribution). Further, in this embodiment, when distributing distribution information from a navigation device, a broadcast IP address is generated as identification information.

[0044] Here, in particular, when the vehicle F shown in Fig. 3 generates a broadcast IP address including a character string including information representing a specific group A among the other vehicles A to E. Take an example I will explain. In order to distribute the distribution information using the broadcast IP address, the reception-side navigation device 400 collates the group information included in the broadcast IP address with the group information to which the distribution-side navigation device 400 belongs. Judge whether it corresponds to the specified group. If it falls into the group specified by the device itself, it is determined that the distribution is for itself and is received. By such a process, only a plurality of opponents (vehicles) belonging to a specified group among a plurality of groups existing on the network are broadcast.

Yes

Accordingly, the distribution-side navigation apparatus 400 has a function for a user to specify a group to which the other party that the user wants to broadcast belongs and a function for generating a broadcast IP address including group information. . On the other hand, the navigation device 400 on the receiving side has a function for determining that the broadcast IP address including the group information is for broadcast and a function for extracting the group information from the broadcast IP address including the group information. And a function to obtain group information to which it belongs and a function to check whether it belongs to the group specified by the broadcast IP address including the group information. Hereinafter, the configuration of the navigation device and the contents of the processing in the broadcast distribution system in this embodiment will be described in order.

[0046] (Hardware configuration of navigation device)

Next, a hardware configuration of the navigation device will be described. FIG. 4 is a block diagram illustrating an example of a hardware configuration of the navigation device. Note that the navigation device 400 is mounted on each of the vehicles A to F shown in FIG. 4, and has both functions of the broadcast distribution device 110 and the communication terminal device 120.

In FIG. 4, a navigation device 400 includes a CPU 401, a ROM 402, a RAM 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, display 413, communication I / F (interface) 41 4, GPS unit 415, various sensors 416, And a camera 417. Each component 40;!-417 is connected by a bus 420.

First, the CPU 401 governs overall control of the navigation device 400. ROM402 Record various programs such as boot programs, route search programs, route guidance programs, guidance sound generation programs, and communication processing programs.

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 (node disk) or FD (flexible disk) can be used.

The optical disk drive 406 controls reading / writing of data with respect to the optical disk 407 according to the control of the CPU 401. The optical disc 407 is a detachable recording medium from which data is read from the optical disc 407 under 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 disc 407, the removable recording medium may be an MO, a memory card, or the like.

Another example of information recorded on the magnetic disk 405 and the optical disk 407 is map information used for route search and route guidance. The map information includes background data that represents features (features) such as buildings, rivers, and the ground surface, and road shape data that represents the shape of the road. Draw in the dimension. When the navigation device 400 is guiding a route, the map information and the current location of the vehicle acquired by the GPS unit 415 described later are displayed in an overlapping manner.

[0052] The background data of the map information includes latitude and longitude information of representative points of various features in addition to latitude and longitude information of each point on the map. For this reason, for example, when one point on the map information displayed on the display 413 described later is designated by the user, the latitude and longitude information of the point can be extracted from the map information. Also, for example, when the name of a certain feature is inputted, the map information power extraction force S is used to extract the latitude and longitude information of the representative point.

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. In addition, input device 411 can be letters, numbers, Examples include remote controls, keyboards, mice, and touch panels with multiple keys for inputting various instructions.

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

The display 413 displays icons, cursors, menus, windows, or various data such as characters and images. As this display 413, for example, a CRT, a TFT liquid crystal display, a plasma display, or the like can be adopted.

[0056] Communication I / F 414 is connected to a communication network via radio and functions as an interface between other navigation apparatus 400 and CPU 401. Communication between the navigation devices 400 via the communication I / F 414 may be performed directly or via a predetermined base station. The communication I / F 414 is further connected to a communication network such as the Internet via wireless, and also functions as an interface between the communication network and the CPU 401.

[0057] Communication networks include LANs, WANs, public line networks and mobile phone networks. Specifically, the communication I / F 414 includes, for example, an FM tuner, a VICS (Vehicle Information and Communication System) / Beacon Resino, a non-spring communication device, and other communication devices.

[0058] 0-3 Unit 415 receives radio waves from GPS satellites, and outputs information indicating the current location of vehicle A to vehicle F (current location of navigation device 400). The output information of the GPS unit 415 is used when the CPU 401 calculates the current points of the vehicles A to F together with output values of various sensors 416 described later. The information indicating the current location is information for specifying one point on the map data, such as latitude / longitude and altitude.

[0059] Various sensors 416 output information that can determine the positions and behaviors of vehicles A to F, such as a vehicle speed sensor, an acceleration sensor, and an angular velocity sensor. The output information of the various sensors 416 is used for the calculation of the current position by the CPU 401 and the measurement of the change in speed and direction. [0060] The camera 417 is mounted on the vehicle and photographs the back of the vehicle. The captured video is converted into data for recording by the video I / F 412 and recorded in the RAM 403, the magnetic disk 405, or the optical disk 407 depending on the application. Note that the camera 417 is not limited to a normal visible light power camera, and may have a special function such as an infrared camera. Further, a shooting angle adjustment function may be provided so that the shooting angle can be changed according to the control of the CPU 401 force.

Note that when the navigation device 400 is made compatible with the broadcast delivery device 110, which is the embodiment, the generation unit 111 realizes its function by the CPU 401, the ROM 402, and the RAM 403, for example. Further, the distribution unit 112 realizes its function by, for example, the CPU 401, the ROM 402, and the communication I / F 414.

[0062] In addition, when the navigation device 400 is made compatible with the communication terminal device 120, which is the embodiment, the storage unit 121 includes the CPU 401, the ROM 402, the magnetic disk drive 404, the magnetic disk 405, and the optical disk drive 406. The function is realized by the optical disc 407. In addition, the acquisition unit 122, the determination unit 123, and the information processing unit 124 realize their functions by, for example, the CPU 401, the ROM 402, and the RAM 403, respectively. Further, the reply unit 125 realizes its function by, for example, the CPU 401, the ROM 402, and the communication I / F 414.

[0063] Next, a vehicle (for example, vehicle F force, etc.) equipped with the navigation device 400 having the above-described configuration is another vehicle (for example, vehicle A to vehicle E) that is also equipped with the navigation device 400. The details of the specific processing when broadcast delivery is performed only to vehicles that meet the specified conditions are explained.

[0064] (Generation of IP address for broadcast)

Next, the specific contents of the broadcast IP address including group information are explained. The broadcast IP address is generated by the following procedure.

(1) Generate an IP address indicating broadcast use. For example, it includes a character string or flag that indicates broadcast use. The positions to be included (within all character strings) may be determined by rules.

(2) A character string indicating group information is included in the IP address indicating broadcast use. For example, a character string can be defined so that attributes can be determined from the character string based on the group name or function name (for example, a navigation device equipped with a point party function of Pioneer Corporation). If it is 400, "pion _ee rpointparty"). Alternatively, when including the function information described above, a character string representing the function information is used. For example, the navigation device 400 equipped with the point party function (dgp98ms8993ca) and the parking lot availability information function (equipped with the navigation device 400 equipped with the device 400) shall be uepp8h4m53 9.

[0066] In addition to a character string indicating group information, a "group information flag" may be set to indicate a broadcast IP address including group information! /.

[0067] The above-described procedure may be defined as a unified procedure that can be communicated with the navigation device 400 in general! /, And may be defined as a specific procedure that can be performed only with the navigation device 400 belonging to a specific group. It may be implemented in the Yon device 400.

[0068] When a user broadcasts a person (vehicle user) belonging to a specific group and there is information or notification, the user first designates that group using the navigation device 400. For the designation method, the name of the loop may be entered or selected from the group list of each vehicle stored in the navigation device 400, or the group list may be obtained from the network and designated. . Even if it is a group that does not belong to itself, you can specify it if the group string is public! /.

[0069] When a group is specified, it is generated by converting it into a character string indicating group information according to the rules described above. If the order of group information character strings on all character strings is specified in the rule for the generated character string, the broadcast IP address including group information together with the character string / flag for broadcast will be used accordingly. Is generated. The user distributes information and notification from the navigation device 400 using the broadcast IP address including this group information.

The terminal that has received this information first determines the power that is its own unique address. Otherwise, it is determined whether the IP address is broadcast according to the rules. If it is broadcast, the character string indicating the group information is recognized and converted to the group information indicated by the character string.

. Then, it acquires all the group information to which it belongs and determines whether it belongs to the group specified by the broadcast IP address including the group information. Receive this information or notification if applicable.

[0071] (Contents of Broadcast Distribution Processing of Distribution-side Navigation Device)

Next, the contents of the broadcast distribution process of the distribution side navigation device will be described. Figure FIG. 5 is a flowchart for explaining a broadcast distribution process of the distribution-side navigation device. As described above, here, as an example, a case will be described in which distribution information is distributed from a vehicle F to vehicles belonging to group A (vehicle A to vehicle C) among other vehicles A to E.

In the flowchart of FIG. 5, first, the distribution-side navigation apparatus 400 mounted on the vehicle F specifies a transmission destination group (step S501). Next, a group information character 歹 IJ is generated (step S502). As this group information character string, a character string corresponding to the destination group is generated. Then, a broadcast IP address including the group information character string generated in step S502 is generated (step S503). Here, the broadcast IP address including the character string of the information related to group A is generated. Finally, the distribution information is transmitted also using the broadcast IP address generated in step S503 (step S504), and the series of broadcast distribution processing in the distribution side navigation device 400 ends. Natural force ¾ In step S 504, the distribution information is constantly transmitted to the vehicles A to F located within the distributable range of the base station 300.

[0073] (Contents of reception processing of reception side navigation device)

Next, the contents of the reception process of the reception side navigation device will be described. Here, a method of receiving distribution information in the navigation device 400 will be described. When receiving the distribution information, the navigation device 400 receives a part of the distribution information distributed from the distribution-side navigation device 400 (including information specifying a transmission destination such as a transmission destination address). And a reception method for receiving all of them. Which method is used is arbitrary for the user of the navigation device 400.

In any method, since the broadcast IP address portion of the distribution information is received, it is determined by referring to this broadcast IP address whether the own apparatus corresponds to the distribution destination. If it is determined that the device corresponds to a distribution destination, the remaining distribution information that has not been received yet is received from the distributed distribution information when a part of the distribution information is received. Further, in the method of receiving all of the distribution information, the received distribution information is held as it is.

[0075] On the other hand, if it is determined by referring to the broadcast IP address that the device does not correspond to the delivery destination Even if it is a technique for receiving a part of distribution information or a technique for receiving all of the distribution information, the received distribution information is discarded.

FIG. 6 is a flowchart showing the contents of the reception process of the reception-side navigation device. In addition, Fig. 6 explains the reception process when a method for receiving a part of distribution information is used. In the flowchart of FIG. 6, when the navigation device 400 mounted on each of the vehicles A to F receives the distribution information, it first determines whether or not the received distribution information is a transmission to its own unique address. (Step S601).

Here, as described with reference to the flowchart of FIG. 5, in the distribution information, vehicles belonging to group A are specified as conditions for the distribution destination, and a unique address is not specified. Therefore, even if the navigation device 400 is installed in any vehicle, it is determined that the received distribution information is not transmitted to its own unique address (step S601: No), and step S602 is performed. Move on to processing. On the other hand, in step S601, distribution information with a unique address is distributed, and if this unique address is a transmission to the navigation apparatus 400's own unique address (step S601: Yes), the distribution is performed as it is. Information is received (step S608), and a series of reception processing ends.

In step S602, first, it is determined whether or not the distribution information is a transmission to a broadcast address (address for broadcast distribution) (step S602). Here, if it is determined that the distribution information is not sent to the broadcast address! / (Step S602: No), the distribution information specifies its own device as the distribution destination! / ,! Then, the series of reception processing ends.

[0079] On the other hand, if it is determined in step S602 that the transmission is to the broadcast IP address (step S602: Yes), then whether or not the broadcast IP address includes a group information character string. Is determined (step S603). If the broadcast IP address does not contain a group information string (step S603: No), the distribution information is broadcast distribution information for all vehicles A to F that are related to the group (no restrictions). Distribution information) is received, the distribution information is received as it is (step S608), and the series of reception processing ends.

[0080] On the other hand, if a group information character string is included in step S603 (step S603: Yes), this group information character string is acquired (step S604), and further, the group information character string is converted and specified. A group character string is acquired (step S605). And self Personal group information is acquired (step S606). Next, it is determined whether or not this group information corresponds to the designated group (step S607). If not applicable (step S607: No), the series of reception processing is terminated. On the other hand, in step S607, if the group information corresponds to the specified group (step S607: Yes), that is, finally, the remaining distribution information other than the broadcast IP address part is received (step S608). The receiving process ends. In the case of FIG. 3, the navigation device 400 mounted on the vehicles A to C belonging to the group A receives the distribution information through the above-described processing.

[0081] Also, in the case where the navigation device 400 receives the distribution information all at once, the process of receiving the distribution information in step S608 becomes unnecessary. Instead, after it is determined that the distribution information is not addressed to its own device, it is necessary to process the distribution information once received. In the case of the flowchart of FIG. 6 as well, a process for discarding the broadcast IP address portion of the distribution information may be added after it is determined that the distribution information is not addressed to the own device

Yes

[0082] As described above, according to the present embodiment, the navigation device designated as the distribution destination.

Only 400 can receive or hold broadcast information. When performing this processing, the navigation device 400 on the distribution side can specify the distribution destination by an address that needs to specify the distribution destination individually. Therefore, distribution to vehicles belonging to a specific group or vehicles having a specific function is realized.

[0083] Further, in the above-described embodiment, since the navigation device 400 is mounted on a vehicle including two wheels or four wheels, it is effective for a vehicle located in a specific region by broadcasting the distribution information. By collecting traffic information and collecting reply information from destinations, it is possible to obtain traffic information and weather information for a specific area.

Note that the communication processing method described in the present embodiment can be implemented 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. This program is also a transmission medium that can be distributed over networks such as the Internet. It may be.

Claims

The scope of the claims

[1] Information for distribution to communication terminals that meet the specified conditions (hereinafter referred to as “distribution information”)

) All at once,

Generating means for generating identification information including information representing the condition;

A distribution unit that distributes the distribution information to the communication terminal device using the identification information generated by the generation unit;

A broadcast distribution apparatus characterized by including:

2. The broadcast delivery device according to claim 1, wherein the generation unit generates the identification information as a broadcast delivery address.

[3] The broadcast delivery according to claim 2, wherein the generation unit generates a broadcast delivery address including information about a loop to which the communication terminal device belongs as information representing the condition. apparatus.

[4] The broadcast generating address including the information related to the information processing function provided in the communication terminal device as the information representing the condition may be generated by the generation unit. 3. Broadcast delivery device according to 3.

[5] A communication terminal device that receives distribution information transmitted from a broadcast distribution device,

Storage means for storing distribution information distributed from the broadcast distribution device;

Referring to the identification information of the distribution information, an acquisition means for acquiring a condition designated as a distribution destination of the distribution information;

A determination means for determining whether or not the condition acquired by the acquisition means matches the own device;

An information processing unit that discards the distribution information from the storage unit when the determination unit determines that the condition is not met;

A communication terminal device comprising:

6. The communication terminal apparatus according to claim 5, wherein the acquisition unit acquires a condition specified as a distribution destination of the distribution information with reference to an address of the distribution information.

[7] When the acquisition unit acquires information about a group as the condition,

The determination means includes a group to which the information related to the group belongs. 6. The communication terminal device according to claim 5, wherein a power of matching with the group is determined.

[8] When the acquisition unit acquires information on a predetermined information processing function as the condition,

6. The communication according to claim 5, wherein the determination unit determines whether or not the information processing function indicated by the information related to the information processing function matches the information processing function provided in the device. Terminal device.

[9] When the storage means stores only a part of the information including the address of the distribution information, if the determination means determines that the condition is met,

7. The communication terminal device according to claim 6, wherein the information processing means stores the distribution information! /, Na! /, And the remaining information in the storage means.

[10] When it is determined by the determining means that the condition is met, predetermined reply information having the address of the own device as the address of the transmission source is transmitted to the broadcast distribution device of the transmission information The communication terminal device according to claim 6, further comprising a reply unit.

[11] A communication processing method for a broadcast distribution device that distributes information for distribution (hereinafter referred to as “distribution information”) to communication terminal devices that meet specified conditions,

A generating step of generating identification information including information representing the condition;

A distribution step of distributing the distribution information to the communication terminal device using the identification information generated by the generation step;

The communication processing method characterized by including.

[12] A communication processing method of a communication terminal device that receives distribution information transmitted from a broadcast distribution device,

A storage step of storing distribution information distributed from the broadcast distribution device in a predetermined storage means;

An acquisition step of referring to the identification information of the distribution information to acquire a condition designated as a distribution destination of the distribution information;

Judgment to determine whether or not the conditions acquired by the acquisition step match the device itself. Cutting process,

An information processing step of discarding the distribution information from the storage means when the determination step determines that the condition does not match the device;

The communication processing method characterized by including.

[13] A communication processing program for causing a computer to execute the communication processing method according to claim 11 or 12.

[14] A computer-readable recording medium on which the communication processing program according to claim 13 is recorded.