JP5163044B2 - Information communication apparatus, information communication method and program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an information communication system capable of outputting only the information useful for a driver and not outputting information not useful for the driver. <P>SOLUTION: The information communication system is equipped with: a roadside wireless device 100 installed on a road where a vehicle travels, a parking lot or the vicinity thereof and wirelessly transmitting and receiving various information; and an on-vehicle device 200 equipped on the vehicle to exchange the various information with the roadside wireless device using wireless communication. In this information communication system, upon receiving content data from the roadside wireless device at a timing when a link is established with the roadside wireless device, a control unit of the on-vehicle device performs control so as to determine whether or not the content data should be supplied to an information output means on the basis of a criterion of decision as to whether or not the content data are necessary information. <P>COPYRIGHT: (C)2009,JPO&amp;INPIT

Description

The present invention, information communication device, an information communication method, and a program.

  In recent years, the spread of ETC (automatic toll collection system) has been remarkable. In ETC, roadside radio equipment and roadside antennas are installed as fixed stations at tollgates and interchanges on toll roads such as expressways, and between onboard equipment and roadside radio equipment as mobile stations installed in vehicles. Road-to-vehicle communication by narrow-area communication is performed, and tolls are charged based on information such as the time and location of vehicles entering the road.

There is also known an information providing system that can easily provide various kinds of useful information to the mobile station according to the travel position and travel direction of the mobile station even in an area having a complicated road network. (For example, refer to Patent Document 1).
JP 2006-318170 A

  In addition to the above-described conventional technology, the following can also be considered. For example, it is conceivable that the communication band for road-to-vehicle communication is expanded by the revision of the communication standard, and it becomes possible to provide detailed information to a traveling vehicle.

  In the future, this high-capacity communication will be used to install roadside radio equipment and roadside antennas as fixed stations not only on expressways but also on general roads and in various places such as private facilities, and use road-to-vehicle communications. Thus, for example, it is considered that various services such as a fee collection service at a parking lot or a gas station, an advertisement service, and a traffic information providing service are provided.

  As one form of such a road-to-vehicle communication service, there is a high possibility that a service for selecting and providing appropriate information on the road according to the movement of the vehicle will be provided to the traveling vehicle.

  For example, the roadside apparatus transmits its own apparatus beacon number specifying the apparatus by broadcast communication, and the vehicle-mounted device stores the beacon number received during communication with the roadside apparatus. In addition, the roadside wireless device provides road traffic information by broadcast communication, and for each information provided, the beacon number of the roadside device with which the vehicle-mounted device suitable for receiving the information communicates immediately before Is added.

  The in-vehicle device compares the beacon number added to each information with the beacon number of the roadside wireless device received by the vehicle while traveling, and selects only the information that matches the related beacon number. Output.

  However, if these road-to-vehicle communication services focus on the provision of road traffic information, only the provision of information based on the road network is possible, and only simple information provision is possible.

  In other words, sufficient information can be provided if the road network is limited to relatively simple roads such as expressways, but the road network may be very complex when considering general roads. Information may not be provided.

  In particular, assuming a vehicle traveling on a general road, the information required by the driver is not limited to road traffic information, but includes a variety of restaurants, shops, tourist facilities, and the like. For this reason, such an information cannot be provided in one form of the road-to-vehicle communication service described above.

  As a solution to such a problem, the technique of Patent Document 1 may be adopted. However, in the conventional information providing system, every time the vehicle-mounted device enters the communication area of the roadside wireless device, that is, a new roadside wireless device. Each time the vehicle passes through the vicinity, the same information as the information (sound, video, text information, etc.) output once in the past may be repeatedly output to the user (driver), which is troublesome. is there.

The present invention has been made in view of the problems relating to output only useful information by the driver, for example, once unnecessary information or the like for a while output Once output, i.e., free of outputting unnecessary information ERROR It is an object to provide an information communication device, an information communication method, and a program.

In order to achieve the above-described problems, an information communication device of the present invention is an information communication device that exchanges various types of information by wireless communication with a road on which a vehicle passes, a roadside parking lot, or a roadside wireless device installed in the vicinity thereof. After the link between the roadside wireless devices is established, after the link between the roadside wireless device and the roadside wireless device transmitting means for transmitting the vehicle-mounted device ID for identifying the vehicle to the roadside wireless device is established, Roadside wireless device receiving means for receiving content data from the roadside wireless device, and content data received by the roadside wireless device receiving means are supplied to the information output means to reproduce the data to be reproduced in the content data. and a control means for determining whether, out information of the plurality of contents data received in the past in pairs roadside apparatus receiving means until a predetermined time period And reproduced data in the feed has been reproduced content data to the means, or the reproduction of the target data in the latest content data received by the pair roadside apparatus receiving means coincides with a predetermined ratio or more An output data history storage detection unit for detecting whether or not the content data newly received by the roadside device reception means coincides at a predetermined rate or more, and the control means stores the output data history storage When detected by the detection unit, the content data received by the roadside apparatus receiving unit is not output to the information output unit.
In order to achieve the above-described problem, the information communication method of the present invention is an information communication method for exchanging various types of information by wireless communication with a road on which a vehicle passes, a parking lot, or a roadside wireless device installed in the vicinity thereof. And after the link between the said roadside radio apparatuses is established, the roadside radio | wireless apparatus transmission step which transmits onboard equipment ID for specifying a vehicle to the said roadside radio apparatus, and the link between the said roadside radio apparatuses Is established, a roadside device receiving step for receiving content data from the roadside device, and the content data received by the roadside device receiving means is supplied to an information output means to send the content data A control step for determining whether or not to reproduce the data to be reproduced at the time, and the roadside device receiving means received in the past up to a predetermined period before Among the plurality of content data, data information to be reproduced in the content data supplied to the information output means and reproduced, and data to be reproduced in the latest content data received by the roadside device reception means And the already output data history storage detecting step for determining whether or not they match at a predetermined ratio or more, and in the control step, the content newly received by the roadside device receiving means The content data received by the roadside device reception means when the output data history storage detection unit detects that the data to be reproduced in the data matches at the predetermined ratio or more Is not output to the information output means.
In order to achieve the above-described problem, the program of the present invention is a computer of an information communication device that exchanges various information by wireless communication with a roadside device on which a vehicle passes, a parking lot, or a roadside device installed in the vicinity thereof. After the link between the roadside wireless devices is established, the roadside device transmitting means for transmitting the vehicle-mounted device ID for identifying the vehicle to the roadside wireless device and the link between the roadside wireless devices are established. Later, a roadside wireless device receiving means for receiving content data from the roadside wireless device, the content data received by the roadside wireless device receiving means is supplied to an information output means to be reproduced in the content data Control means for determining whether or not to reproduce data, a plurality of previous received in the past up to a predetermined period before the roadside device receiving means Of the content data, the data to be reproduced in the content data supplied to the information output means and reproduced, and the data to be reproduced in the latest content data received by the roadside apparatus receiving means A program characterized in that it functions as an already-output data history storage detecting means for judging whether or not they match at a ratio or more, wherein the control means is newly received by the roadside apparatus receiving means If the output data history storage detection unit detects that the data to be reproduced in the content data that has been matched is equal to or greater than the predetermined ratio, it is received by the roadside radio device receiving means. Further, the content data is not output to the information output means.

  According to the present invention, only useful information for the driver is output, and unnecessary information is not output, so that the troublesomeness felt by the driver can be eliminated.

  Hereinafter, an ITS (Intelligent Transport Systems) system will be described as an example of an information communication system according to an embodiment of the present invention. First, the configuration of the information communication system will be described, and then the operation will be described.

[Configuration of Information Communication System (ITS System)]
As shown in FIG. 1, the ITS system includes a roadside wireless device 100 arranged near a place where a vehicle such as a road and a parking lot passes, an on-vehicle device 200 that is mounted on the vehicle and serves as an information communication device, and a roadside wireless device. The apparatus 100 includes an information providing server (management server) 300 that transmits information.

  Here, the vehicle-mounted device 200 communicates with the roadside wireless device 100 at a timing when the link is established with the roadside wireless device 100 (while it is within the communication range of the roadside wireless device 100), and the vehicle rider Is an information communication device that transmits to the roadside apparatus 100 an on-vehicle device ID (details will be described later), a travel history, etc. (uplink data), which is a kind of ID for providing traffic information and the like to the vehicle. . In addition, since the roadside apparatus 100 knows its own latitude / longitude, the roadside apparatus 100 or the information providing server 300 tracks the same vehicle-mounted device ID transmitted (acquired) from the vehicle-mounted device 200. The travel history of the vehicle can be generated internally, which can be used for distribution of traffic information and the like.

  Each roadside apparatus 100 shown in FIG. 1 is composed of so-called radio wave beacons, optical beacons, and the like, and is arranged in the vicinity of a road, a parking lot or the like, and passes traffic information distribution etc. in the vicinity (the communication area of the roadside radio apparatus 100). To the vehicle-mounted device 200 mounted on the vehicle to be transmitted (downlink) by the DSRC (Dedicated Short Range Communication) method, and transmission data (uplink) such as the vehicle-mounted device ID from the vehicle-mounted device 200 Data) is received and supplied to the information providing server 300.

  Each roadside apparatus 100 stores received content data (including content data and playback control data) that is data transmitted from the information providing server 300 and is a transmission target to the vehicle-mounted device 200. Received content data (content data and playback control data) is wirelessly transmitted to the vehicle-mounted device 200.

  Here, the reproduction control data is data for instructing conditions and positions for reproducing the content data. Each of the content data and the reproduction control data has header information. The content data and the reproduction control data are also referred to as received content data (described later).

  In order to achieve such a function, the roadside apparatus 100, as shown in FIG. 2, has an on-vehicle unit wireless communication unit 101, which is an on-vehicle unit reception unit and an on-vehicle transmission unit, and a server communication control unit (transmission / reception function). Server communication control unit 102, storage device 103, control unit 104, ROM 105, RAM 106, system bus 107, and information storage unit 108 as information storage means.

  The on-vehicle device wireless communication unit 101 that is the on-vehicle device reception unit or the on-vehicle device transmission unit passes through the vicinity (communication range of the roadside apparatus 100) by any one or a plurality of wireless signals such as radio signals and optical signals. Information is communicated with the vehicle-mounted device 200 installed in the vehicle. The on-vehicle device wireless communication unit 101 transmits predetermined information such as traffic information provided from the information providing server 300 to the on-vehicle device 200, for example. The on-vehicle device wireless communication unit 101 also transmits the vehicle-mounted device ID (packets transmitted and received when the link between the roadside wireless device 100 and the vehicle-mounted device 200 is established) A vehicle-mounted device ID for identifying a vehicle to be placed on a header portion such as a packet when uplinking the vehicle to the roadside device 100 or a packet when the roadside wireless device 100 downlinks data to the vehicle-mounted device 200, Receives history etc.

  The vehicle-mounted device ID is originally an ID set for each vehicle-mounted device, and is registered in association with the vehicle during the authentication period. That is, it can be said that the vehicle-mounted device ID is a kind of ID for identifying the vehicle. For this reason, personal information can be acquired from the vehicle-mounted device ID.

  The server-to-server communication control unit 102 as server-to-server communication control means is connected to the information providing server 300 via the ITS communication network NW2, and traffic information transmitted from the information providing server 300, parking availability information, nearby restaurants, Various kinds of information (predetermined information: received content data) such as shop and tourist facility information is received and stored in the storage device 103. Further, the server communication control unit 102 performs control to provide the information providing server 300 with the traffic information acquired from the vehicle-mounted device 200 or the like, the vehicle-mounted device ID, the travel history, or the like.

  The storage device 103 stores traffic information received from the information providing server 300, traffic information unique to the own device, etc. (received content data).

  The control unit 104 includes a processor and controls the operation of the entire roadside apparatus 100. In particular, the control unit 104 controls the transmission of traffic information and the like (received content data) stored in the storage device 103 from the on-vehicle device wireless communication unit 101, and the on-vehicle device via the on-vehicle device wireless communication unit 101. Control is performed to store the information acquired from 200 in the storage device 103 or the information storage unit 108.

  In addition, the control unit 104 transmits the traffic information acquired by the own device stored in the storage device 103 to the information providing server 300 via the server communication control unit 102 and the ITS communication network NW2, and provides the information. Control is performed to store information acquired from the server 300 via the server-to-server communication control unit 102 in the storage device 103.

  In addition, the control unit 104 acquires information (such as the vehicle-mounted device ID and the travel history) uplinked from the vehicle-mounted device 200 via the vehicle-mounted device wireless communication unit 101 and stores the information in the information storage unit 108 that is an information storage unit. Store.

  The ROM 105 stores an operating system (OS), operation programs, and various data necessary for operation control of the entire roadside apparatus 100. The RAM 106 functions as a work area for the control unit 104.

  The system bus 107 is a transmission path for transferring commands and data between the above-described units. The information storage unit 108 stores information uplinked from the vehicle-mounted device 200 (vehicle-mounted device ID, travel history, etc.).

  The vehicle-mounted device 200 shown in FIG. 3 is installed in each vehicle, and is configured integrally with, for example, a car navigation device. The vehicle-mounted device 200 has a function of reproducing and notifying various information (content data) such as traffic information transmitted from the roadside apparatus 100, in addition to a general car navigation function.

  For this reason, the vehicle-mounted device 200 determines its own position, and determines the received content data transmitted from the roadside apparatus 100 via wireless communication, the content data included in the received content data, and the position to reproduce it. The reproduction control data to be instructed is received. When the vehicle-mounted device 200 detects that its determined position matches the reproduction position indicated by the received reproduction control data, it reproduces the content data.

  As shown in FIG. 3, the vehicle-mounted device 200 is roughly composed of an ITS vehicle-mounted device 200A and an output data supply signal output device 200B that is an output data supply signal output means for outputting an output data supply signal.

  The ITS on-board device 200A includes a communication unit 201, an audio processing unit 202, an output unit 203, an operation unit 204, an I / O (Input / Output) device 205, a storage device 206, and a travel history that generates a travel history as a part of functions. Obtained from the control unit 207 having a function as a generation unit, ROM 208, RAM 209, system bus 210, roadside wireless device transmission unit and roadside wireless device reception unit, roadside wireless device wireless communication unit 211, roadside wireless device 100 An output data storage unit 212 that stores content data and a travel history storage unit 213 that is a travel history storage unit that stores a travel history are included. The content data is, for example, various road traffic information, parking vacancy information, nearby restaurants and shops, tourist facilities, sights information, etc., and is one of various information provided from the information providing server 300. Or it is plural, and it covers a wide range. The received content data has a level related to whether or not to reproduce the content. Specifically, data that must be played as soon as it is received, data that must be played, but data that may be played back after a predetermined time if it conflicts with navigation, data that allows the user to select whether playback is possible, etc. It is.

  The communication unit 201 includes at least a GPS (Global Positioning System) module 201a and a DSRC module 201b.

  The GPS module 201a receives GPS radio waves from a plurality of GPS satellites and supplies them to the control unit 207 which is a position acquisition unit.

  The DSRC module 201b communicates with the roadside apparatus 100 using the DSRC method.

  The audio processing unit 202 converts the digital audio signal input from the control unit 207 into an analog audio signal using a D / A converter (not shown), and outputs the analog audio signal to the speaker 222. Also, the voice processing unit 202 converts the voice input from the microphone 223 into a digital audio signal by an A / D converter (not shown), and inputs the digital audio signal to the control unit 207. Thereby, the user can hear the navigation voice included in the predetermined information acquired from the roadside apparatus 100, or can input the voice.

  The output unit 203 includes a monitor device and the like, and is included in navigation images and TV images acquired by the communication unit 201, map images stored in advance in the storage device 206 and the like, and predetermined information acquired from the roadside apparatus 100. Display video and text data. Note that the monitor device and the like of the speaker 222 and the output unit 203 described above are also referred to as information output means.

  The operation unit 204 includes a touch panel type input device, a remote controller, and the like, generates an instruction input signal based on an instruction input by a user, and inputs the instruction input signal to the control unit 207.

  The I / O device 205 includes a DVD-ROM (Digital Versatile Disk-Read Only Memory) drive (not shown), reads data from a DVD-ROM or CD-ROM storing predetermined map information, etc., and a storage device And / or input to the control unit 207.

  Further, the I / O device 205 inputs detection signals from a plurality of sensors (not shown) such as a speed sensor, a travel distance sensor, and an orientation sensor, and supplies the detection signals to the control unit 207.

  Further, the output data supply signal output device 200B is connected to the I / O device 205, and the control unit 207 inputs an output data supply signal or the like via the I / O device 205, and based on the output data supply signal. Thus, it is determined and executed whether or not to supply the content data to the information output means.

  The storage device 206 includes a hard disk drive (HDD) and stores predetermined map information (map data), various setting information, and the like. Note that the storage device 206 may include another memory such as a memory card. The control unit 207 may read the map information from a storage medium such as a DVD-ROM storing the map information as needed, or read the map information from the recording medium in advance and write it in the storage device 206 (installed). You may do it. The control unit 207 may further download map information from the roadside apparatus 100 and save it in the storage device 206.

  In addition, the storage device 206 that is also an on-vehicle device ID storage unit stores an on-vehicle device ID for identifying the vehicle in advance. The vehicle-mounted device ID is a packet transmitted or received when establishing a link between the roadside device 100 and the vehicle-mounted device 200, a packet when the vehicle-mounted device 200 uplinks data to the roadside device 100, or a roadside wireless device. This is an ID for identifying a vehicle that is placed on a header portion such as a packet when the device 100 downlinks data to the vehicle-mounted device 200.

  The control unit 207 includes a CPU (Central Processing Unit) and controls the operation of the entire ITS on-vehicle device 200A.

  For example, the control unit 207 having a function as a travel history generation unit determines its own current position (position information) based on the GPS signal received via the GPS module 201a, and the position information that changes every moment. For example, every time data (position information) is updated, the travel history is stored (updated) in the travel history storage unit 213 serving as a travel history storage unit.

  For example, when the output data supply signal output device 200B outputs “0” as the output data supply signal, the control unit 207 outputs the information (content data) stored in the output data storage unit 212 as information output means. If the output data supply signal is “1”, the information stored in the output data storage unit 212 is supplied to the information output means.

  In addition, the control unit 207 controls the roadside apparatus wireless communication unit 211 when the link between the onboard apparatus 200 and the roadside apparatus 100 is established, that is, when the onboard apparatus 200 is located in the communication area of the roadside apparatus 100. The vehicle-mounted device ID stored in the storage device 206 and the travel history stored in the travel history storage unit 213 are read out and transmitted (uplink) to the roadside apparatus 100.

  Further, the control unit 207 takes in the output of the direction sensor (not shown) via the I / O device 205 and determines the current traveling direction of the vehicle. In addition, the control unit 207 obtains a travel distance from the output of a distance sensor (not shown). In addition, the control unit 207 receives traffic information and the like from the roadside apparatus 100 via the DSRC module 201b, and reproduces it based on the reproduction control information included in the received traffic information and the like. Note that the control unit 207 may include a coprocessor or the like.

  The ROM 208 stores an operating system (OS) program, operation program, and various data necessary for operation control of the entire vehicle-mounted device 200.

  The RAM 209 temporarily stores data and programs, and temporarily stores data acquired by the communication unit 201, data read from a DVD-ROM, and the like. The control unit 207 uses the RAM 209 as a work memory.

  The system bus 210 is a transmission path for interconnecting the above-described units and transferring commands and data.

  A roadside apparatus wireless communication unit 211 serving as a roadside apparatus transmitting unit and a roadside apparatus receiving unit receives received content data from the roadside apparatus 100 under the control of the control unit 207, and outputs an output data storage unit. 212.

  The output data storage unit 212 stores received content data received (acquired) from the roadside apparatus 100 by the roadside apparatus wireless communication unit 211. The travel history storage unit 213 stores a travel history that is generated by the control unit 207 that is a travel history generation unit and is updated every moment.

  As shown in FIG. 4, the output data supply signal output device 200B includes a control unit 225, an already output data history storage detection unit 226, an output data creation date elapsed time detection unit 227, an information content detection unit 228, and a commuting route detection unit 229. The output data supply signal output unit 230 outputs an output data supply signal, and ROM and RAM (not shown).

  The control unit 225 controls the entire output data supply signal output device 200B.

  For example, the control unit 225 determines whether to output (notify) the content data downlinked from the roadside apparatus 100 to the user. The output data history storage detection unit 226, the output data creation date elapsed time detection unit 227, and the like. The determination is made based on the detection results from the information content detection unit 228 or the commuting route detection unit 229. Specifically, when the roadside apparatus wireless communication unit 211 receives the latest content data downlinked from the roadside apparatus 100, the control unit 207 stores the latest content data in the output data storage unit 212. At the same time, it is confirmed whether the latest content data is data that must be reproduced, and if it is data that must be reproduced, the output data history is output via the I / O device 205 and the control unit 225. The data is output to the storage detection unit 226, output data creation date elapsed time detection unit 227, information content detection unit 228, or commute route detection unit 229. Thereafter, the control unit 225 confirms whether the content data downlinked from the roadside apparatus 100 is data that must be reproduced, and outputs (notifies) to the user when the data is not necessarily data to be reproduced. ) Based on the detection results from the already output data history storage detection unit 226, the output data creation date elapsed time detection unit 227, the information content detection unit 228, or the commuting route detection unit 229.

  The control unit 225 determines whether to output (notify) the content data downlinked from the roadside apparatus 100 based on the detection result of the already-output data history storage detection unit 226. If it is determined that notification is to be made, the output data history storage detection unit 226 stores (addition: stored content data) the latest content data in the storage unit (not shown). If the number exceeds the predetermined number, the old one is deleted and added).

  When the control unit 225 determines that the content data is to be notified to the user, the control unit 225 controls the output data supply signal output unit 230 to output, for example, “1” as the output data supply signal, The output data supply signal “1” is output to the control unit 207 of the ITS in-vehicle device 200A via the I / O device 205. Thus, the control unit 207 notifies the user of the content data by outputting the latest content data stored in the output data storage unit 212 to the information output unit (such as the monitor device of the speaker 222 and the output unit 203). To do.

  On the other hand, if the control unit 225 determines not to notify, the output data supply signal output unit 230 is controlled to output, for example, “0” as the output data supply signal, and the output data supply signal “0”. Is output to the control unit 207 of the ITS in-vehicle device 200A via the I / O device 205. Thereby, the control unit 207 does not output the latest content data stored in the output data storage unit 212 to the information output unit (such as the monitor device of the speaker 222 and the output unit 203). That is, the content data is not notified to the user.

  Hereinafter, the control operation (content data) of the control unit 225 based on the detection results of the output data history storage detection unit 226, the output data creation date elapsed time detection unit 227, the information content detection unit 228, or the commute route detection unit 229. Will be described in detail.

  The already-output data history storage detection unit 226 controls the control unit 225 (control unit 207) not to notify the user when the content data acquired through the downlink is information that has been notified to the user in the past. The detection result notification is output to. Specifically, the output data history storage detection unit 226 stores a predetermined number of content data received in the past by the roadside apparatus wireless communication unit 211 and notified to the user. When the roadside apparatus wireless communication unit 211 receives the latest content data from the roadside apparatus 100, the control unit 207 of the ITS on-board device 200A stores the latest content data in the output data storage unit 212. The data is supplied to the already output data history storage detection unit 226 via the I / O device 205 and the control unit 225. The already-output data history storage detection unit 226 determines that the latest content data supplied matches the stored information, or a predetermined ratio or more (for example, in the case of character data, how many characters in the number match). If it is determined that there is a match, a predetermined notification signal is output to the control unit 225. In accordance with this output, the control unit 225 controls the output data supply signal output unit 230 to send an output data supply signal “0” (an output data supply signal that does not supply content data) via the I / O device 205. Output to the control unit 207. As a result, the control unit 207 does not output the latest content data stored in the output data storage unit 212 to the information output unit. That is, the content data is not notified to the user.

  The output data creation date elapsed time detection unit 227 notifies the control unit 225 (control unit 207) of the detection result so as not to output (notify the user) data that has passed a predetermined period from the data (content data) creation date and time. Specifically, when the roadside apparatus wireless communication unit 211 receives the latest content data from the roadside apparatus 100, the control unit 207 stores the latest content data in the output data storage unit 212 and the I / The output data creation date elapsed time detection unit 227 is supplied via the O device 205 and the control unit 225. The output data creation date elapsed time detection unit 227 refers to a predetermined area (area in which the creation date and time is recorded) of the packet data (not shown) of the latest supplied content data. Then, by comparing the current date and time with the date and time when the data was created, it is detected how much time has passed since the created date and time. As a result of the detection, if a predetermined period or more has elapsed, a predetermined notification signal is output to the control unit 225. In accordance with this notification, the control unit 225 controls the output data supply signal output unit 230 to send an output data supply signal “0” (an output data supply signal that does not supply content data) via the I / O device 205. It outputs to the control part 207 of ITS onboard equipment 200A. As a result, the control unit 207 does not output the latest content data stored in the output data storage unit 212 to the information output unit. That is, the content data is not notified to the user.

  The information content detection unit 228 notifies the control unit 225 of the detection result so as not to output the data (notify the user) according to the content of the data (content data). For example, the information content includes “traffic regulation information”, “traffic congestion information”, “facility information”, “parking lot information”, etc., and if the content data includes such information, a flag is included. Will be sent. For example, if the user thinks that parking lot information is not necessary, if the parking lot information is registered, the content information including the parking information flag is not output. Specifically, when the roadside apparatus wireless communication unit 211 receives the latest content data from the roadside apparatus 100, the control unit 207 stores the latest content data in the output data storage unit 212 and the I / The data is supplied to the information content detection unit 228 via the O device 205 and the control unit 225. The information content detection unit 228 refers to a predetermined area (area in which the content / type (flag) of the content data is recorded) of the packet data (not shown) of the latest content data supplied. Then, the content / type of the content data is detected (for example, the content data is the content / type that need not be notified for a while once notified). For example, if it is detected that the content data is construction information, landslide information, etc., in such a case, once the content data is notified to the user, there is no need to notify it for a while. I can judge. In the case where the content data is detected by the information content detection unit 228 as data of such content / type, the same content data is again received after a predetermined period of time has passed since the content data was notified to the user. When the content data of the content is received (downlink), the information content detection unit 228 outputs a predetermined notification signal to the control unit 225. In accordance with this notification, the control unit 225 controls the output data supply signal output unit 230 to send an output data supply signal “0” (an output data supply signal that does not supply content data) via the I / O device 205. It outputs to the control part 207 of ITS onboard equipment 200A. As a result, the control unit 207 does not output the latest content data stored in the output data storage unit 212 to the information output unit. That is, the content data is not notified to the user.

  The commuting route detection unit 229 notifies the control unit 225 of the detection result so that data (content data) received on a route that frequently passes, such as a commuting route, is not output (notified to the user). Specifically, the commuting route detection unit 229 stores a route that frequently passes such as a commuting route in an internal storage unit (not shown). This route may be input by the user. When the roadside apparatus wireless communication unit 211 receives the latest content data from the roadside apparatus 100, the control unit 207 stores the latest content data in the output data storage unit 212 and the I / O device 205. And it supplies to the commuting route detection part 229 via the control part 225. The commuting route detection unit 229 outputs a predetermined notification signal to the control unit 225 when detecting that the latest supplied content data is generated on a route that frequently passes, such as a commuting route. In accordance with this notification, the control unit 225 controls the output data supply signal output unit 230 to send an output data supply signal “0” (an output data supply signal that does not supply content data) via the I / O device 205. It outputs to the control part 207 of ITS onboard equipment 200A. As a result, the control unit 207 does not output the latest content data stored in the output data storage unit 212 to the information output unit. That is, the content data is not notified to the user. Note that frequently-used route data such as a commuting route stored in the commuting route detection unit 229 may be registered in advance by the user, or automatically as a route frequently used by the vehicle-mounted device 200 based on a navigation history or the like. It may be configured to be registered automatically.

  Next, the vehicle-mounted device 200 will be functionally described with reference to FIG.

  As shown in FIG. 5, the in-vehicle device 200 functionally includes a data acquisition unit 251, a parallel reproduction determination unit 252, a data reproduction unit 253, a self-position detection unit 254, a position match determination unit 255, A traveling direction detection unit 256 and a direction coincidence determination unit 257 are provided.

  The data acquisition unit 251 acquires one or a plurality of received content data to be reproduced from the roadside apparatus 100. The received content data includes reproduction control data that instructs the reproduction conditions of the content data included in the received content data.

  The content data is, for example, moving image data such as MPEG (Moving Picture Experts Group) format, still image data such as JPEG (Joint Photographic Experts Group) format, audio signal data in TTS (Text-to-Speech) format, character information Including text data. The data acquisition unit 251 decodes data received by the communication unit 201 from the moving image data, still image data, audio signal data, text data, or the like, or stores data stored in the storage device 206 as predetermined. Read and acquire at the timing of.

  The data acquisition unit 251 is configured by the control unit 207, the communication unit 201, and the storage device 206 operating in cooperation.

  The data reproducing unit 253 reproduces content data. The data reproduction unit 253 determines whether or not a plurality of contents need to be reproduced in parallel when reproducing the content based on the determination of the parallel reproduction determination unit 252 and is attached to each content data. Whether or not a certain playback condition is satisfied is determined from the determination results of the position match determination unit 255 and the direction match determination unit 257, and the content data is played back.

  The position coincidence determination unit 255 is configured by the control unit 207, and when the received content data acquired by the data acquisition unit 251 designates a position for reproducing the content data, the position match determination unit 255 and the position specified by the reproduction control data When the self-position detected by the position detecting unit 254 is collated and matched (they are within a predetermined error: the position to be reproduced and the radius centered on that position), the data reproducing unit 253 Give permission to play data.

  On the other hand, the direction coincidence determination unit 257 is configured by the control unit 207, and performs reproduction control when the received content data acquired by the data acquisition unit 251 specifies the traveling direction of the vehicle as a condition for reproducing the content data. When the direction indicated by the data and the traveling direction of the vehicle are compared and matched (they are within a predetermined error: the position to be reproduced and the radius centered on that position), the data reproduction unit In 253, permission for data reproduction is issued. In addition to the traveling direction, the determination may be made by checking the coincidence of the road type (such as an expressway or a general road).

  The self-position detection unit 254 detects the current position by processing the GPS signal. The self-position detecting unit 254 is configured from a part that processes GPS signals of the communication unit 201 and the control unit 207.

  The traveling direction detection unit 256 has a function of detecting the traveling direction of the vehicle, and includes a direction sensor, an I / O unit, and a control unit 207.

  The content data to be reproduced includes a combination of data reproduced simultaneously or in parallel. For example, it is a combination of map image data of a certain display area and audio signal data that describes sightseeing information of the display area. Here, “simultaneous” does not require that the times completely coincide with each other, and it suffices if the reproduction timings partially overlap. In general, the content providing side (data distribution side) produces image data and audio signal data on the premise that they are reproduced simultaneously.

  However, there may be a difference in the timing for acquiring data to be reproduced at the same time. Therefore, in the present embodiment, as described above, a header area is provided in the content data, and a playback condition is set in the header area for distribution, and the vehicle-mounted device 200 plays back the content data according to the playback condition. Thereby, content data can be reproduced as intended by the content provider.

  Next, the information providing server 300 generates and distributes traffic information or the like (received content data) that is the same information or different information for each of the plurality of roadside wireless devices 100, and is transmitted from the roadside wireless device 100. It is a device that receives a device ID and a travel history.

  In addition, the voice processing unit (speaker or the like) 202 or the output unit (monitor device or the like) 203 of the vehicle-mounted device 200 outputs the content data included in the received content data in place of information such as voice, video, or character data.

  As shown in FIG. 6, the information providing server 300 includes an input unit 301, an output unit 302, a general network communication control unit 303, a roadside device communication control unit 304, a storage device 305, a control unit 306, and a ROM (Read Only Memory) 307, RAM (Random Access Memory) 308, and system bus 309.

  The input unit 301 includes a keyboard, a mouse, an input interface, and the like, and inputs various data and instructions.

  The output unit 302 includes a display device and displays data, messages, and the like.

  The general network communication control unit 303 communicates with an external device via a general communication network NW1 such as a telephone line or the Internet, and acquires various information.

  The roadside device communication control unit 304 is connected to a plurality of roadside devices 100 via the ITS communication network NW2, and transmits content data to each roadside device 100 or an in-vehicle device transmitted from the roadside device 100. The traveling history of the vehicle having the ID and the vehicle-mounted device ID is received. In addition, the roadside apparatus communication control unit 304 uses the ITS communication network NW2 to provide other information, for example, the vehicle-mounted device ID obtained by the roadside device 100 communicating with the vehicle-mounted device 200, travel history, and the like. Collect information.

  The storage device 305 includes a storage unit such as a hard disk device, and stores various traffic information and received content data, and the vehicle-mounted device ID and travel history obtained by the roadside wireless device 100 communicating with the vehicle-mounted device 200. In addition, the storage device 305 stores geographical information of the vicinity thereof together with the position, address, and the like of each roadside device 100.

  The control unit 306 includes a processor and controls the operation of the information providing server 300 as a whole. Further, the control unit 306 creates information to be distributed to each roadside apparatus 100 based on various information (content data) stored in the storage device 305, and the roadside apparatus communication control unit 304 and the ITS communication network It supplies to each roadside apparatus 100 via NW2.

  The ROM 307 stores an operating system (OS), operation programs, and various data necessary for operation control of the information providing server 300 as a whole. The RAM 308 functions as a work area for the control unit 306. A system bus 309 is a transmission path for transferring commands and data between the above-described units.

  For the vehicle-mounted device 200, the roadside apparatus 100 and the information providing server 300 are referred to as a host device for convenience.

  Next, the operation of the ITS system will be described with reference to FIGS.

[Operation of Information Communication System (ITS System)]
First, referring to the flowchart of FIG. 7, when the downlink content data is the same information as the previously notified content data, information communication is performed so that the content data is not notified to the user. The operation of the apparatus will be described.

  When data is downlinked to the roadside apparatus wireless communication unit 211 of the vehicle-mounted device 200 serving as the information communication apparatus, the control unit 207 determines whether or not the downlinked data is content data (step S10). If it is determined that the data is not content data, step S10 is performed again after a predetermined time. If it is determined that the data is content data, the process proceeds to step S11.

  In step S11, the control unit 207 stores the latest downlink content data in the output data storage unit 212, and also outputs the output data history storage detection unit 226 via the I / O device 205 and the control unit 225. To supply. The output data history storage detection unit 226 supplied with the latest content data has a predetermined ratio of the supplied latest content data in the content data stored in the storage unit of the output data history storage detection unit 226. It is determined whether or not there is a match. If there is a match, the process proceeds to step S12. If there is no match, the process proceeds to step S13. Note that the determination of YES in step S11 is determination as unnecessary information, and determination of NO is determination as not unnecessary information.

  If transfering it to step S12, the control part 207 will return a process to step S10, without supplying the said latest content data memorize | stored in the output data memory | storage part 212 to an information output means (notifying a user).

  On the other hand, in step S13, the control unit 207 outputs the latest content data stored in the output data storage unit 212 to the information output unit (such as the monitor device of the speaker 222 and the output unit 203), thereby prompting the user. The content data is notified, and the process proceeds to step S14.

  If transfering it to step S14, the control part 225 will memorize | store (add) the said content data in the memory | storage part of the output data history memory | storage detection part 226, and will return a process to step S10. And the process of step S10 to step S14 is repeated while the power supply of the onboard equipment 200 is ON.

  Next, referring to the flowchart of FIG. 8, when the period from the creation date of the downlinked content data to the present has passed a predetermined period or longer, the notification of the content data is not performed to the user. The operation of the information communication apparatus will be described.

  When data is downlinked to the roadside apparatus 200 of the in-vehicle device 200, the control unit 207 determines whether or not the downlinked data is content data (step S20). If it is determined that there is no content, step S20 is performed again after a predetermined time. If it is determined that the data is content data, the process proceeds to step S21.

  In step S21, the control unit 207 stores the latest downlink content data in the output data storage unit 212 and outputs the output data creation date elapsed time detection unit via the I / O device 205 and the control unit 225. 227. The output data creation date elapsed time detection unit 227 supplied with the latest content data reads the read date of the content data from a predetermined area (area in which the creation date is recorded) of the packet data of the content data and reads It detects (calculates) how much time (period) has elapsed from the creation date and time of the content data to the present, and the process proceeds to step S22.

  In step S22, the output data creation date elapsed time detection unit 227 determines whether or not the above-described elapsed period has passed a predetermined period. If it is determined that the elapsed period has elapsed, the process proceeds to step S22. The process moves to S23, and if it is determined that it has not elapsed, the process moves to Step S24. Note that the determination of YES in step S22 is determination as unnecessary information, and determination of NO is determination as not unnecessary information.

  If transfering it to step S23, the control part 207 will return a process to step S20, without supplying the said latest content data memorize | stored in the output data memory | storage part 212 to an information output means (notifying a user).

  On the other hand, in step S24, the control unit 207 outputs the latest content data stored in the output data storage unit 212 to the information output unit (such as the monitor device of the speaker 222 and the output unit 203), thereby prompting the user. The content data is notified, and the process returns to step S20. And the process of step S20 to step S24 is repeated while the power supply of the onboard equipment 200 is ON.

  Next, with reference to the flowchart of FIG. 9, the operation of the information communication apparatus that prevents the content data from being notified to the user according to the content / type of the downlink content data will be described.

  When data is downlinked to the roadside apparatus 200 of the in-vehicle device 200, the control unit 207 determines whether the downlinked data is content data (step S30), and the content data If it is determined that there is no content, step S30 is performed again after a predetermined time. If it is determined that the data is content data, the process proceeds to step S31.

  In step S31, the control unit 207 stores the latest downlink content data in the output data storage unit 212 and supplies it to the information content detection unit 228 via the I / O device 205 and the control unit 225. . The information content detection unit 228 supplied with the latest content data determines the content / type of the content data in a predetermined area of the packet data of the content data (the content / type of the content data is recorded). Area) and the process proceeds to step S32.

  When the process proceeds to step S32, the information content detection unit 228 determines from the content / type information of the content data whether the content data is information that is not required to be notified for a while once notified to the user. If it is determined that the information is not required to be notified for a while once notified, the process proceeds to step S34. If not, the process proceeds to step S33. Note that the determination of YES in steps S32 and S34 is determination as unnecessary information, and the determination of NO in steps S32 and S34 is determination as not unnecessary information.

  In step S33, the control unit 207 outputs the latest content data stored in the output data storage unit 212 to the information output unit (such as the monitor device of the speaker 222 and the output unit 203), so that the content is notified to the user. The data is notified and the process returns to step S30.

  On the other hand, in step S34, the information content detection unit 228 determines whether content data having the same content is received (downlink) again before a predetermined period of time elapses after the content data is once notified to the user. If it is determined that it has not been received, the process of step S33 described above is executed. If it is determined that it has been received, the process proceeds to step S35.

  If transfering it to step S35, the control part 207 will return a process to step S30, without supplying the said latest content data memorize | stored in the output data memory | storage part 212 to an information output means (notifying a user). And the process of step S30 to step S35 is repeated while the power supply of the onboard equipment 200 is on.

  Next, an operation of the information communication apparatus that is controlled so as not to notify the user of content data received on a route that frequently passes, such as a commuting route, will be described with reference to the flowchart of FIG.

  When the data is downlinked to the roadside apparatus 200 of the in-vehicle device 200, the control unit 207 determines whether or not the downlinked data is content data (step S40). If it is determined that there is no data, step S40 is performed again after a predetermined time. If it is determined that the data is content data, the process proceeds to step S41.

  In step S41, the control unit 207 stores the latest downlink content data in the output data storage unit 212, and also displays the content data and vehicle position information when the content data is downloaded. The data is supplied to the commuting route detection unit 229 via the / O device 205 and the control unit 225. The commuting route detection unit 229 supplied with the latest content data uses the stored commuting route and other route information and the vehicle position information supplied from the control unit 207 to determine whether the vehicle is currently commuting route or the like. It is determined whether or not the route is on a route that passes frequently. If it is determined that the route is on a route that passes frequently, such as a commuting route, the process proceeds to step S42. If not, the process proceeds to step S43. Note that the determination of YES in step S41 is determination of unnecessary information, and determination of NO is determination that it is not unnecessary information.

  If transfering it to step S42, the control part 207 will return a process to step S40, without supplying the said latest content data memorize | stored in the output data memory | storage part 212 to an information output means (notifying a user).

  On the other hand, in step S43, the control unit 207 outputs the latest content data stored in the output data storage unit 212 to the information output unit (such as the monitor device of the speaker 222 and the output unit 203), thereby prompting the user. The content data is notified, and the process returns to step S40. And the process of step S40 to step S43 is repeated while the power supply of the onboard equipment 200 is on.

  As described above, the present embodiment has the following effects.

  Only information useful for the driver is output. For example, information that does not need to be output for a while after being output, such as unnecessary information, is not output. Are not output, and the troublesomeness felt by the driver can be eliminated.

  Moreover, since the communication between the roadside apparatus 100 and the vehicle-mounted device 200 is narrow-area communication, the vehicle position information can be accurately grasped and accurate traffic information can be obtained.

  Although the embodiment of the present invention has been described above, the present invention is not limited to this.

  For example, in the present embodiment, when a predetermined condition is satisfied, for example, information that has been output (notified) in the past, information that has passed a predetermined period since the creation date, information of a predetermined content, The information received (downlink) on the commuting road is not output (notified) to the user, but if it is important information such as emergency information, it will be notified whenever it occurs. You may make it perform.

  In the above-described embodiment, the system includes the information providing server 300. However, the information transmitted from the vehicle-mounted device 200 to the roadside apparatus 100 is not transmitted via the ITS communication network NW2 but a network such as the Internet. May be sent to one or more servers. The roadside apparatus 100 itself may serve as a server for the Internet network or the ITS communication network NW2.

  In addition, other communication methods such as mid-range communication may be employed instead of narrow-range communication. Furthermore, although the description has been given by taking an automobile vehicle as an example, the present invention can be applied to other transportation means such as a monorail or a train.

  Moreover, since data (content data) once output (notified) to a predetermined vehicle (user) can be determined by tracing the vehicle-mounted device ID on the server (including the roadside wireless device 100) side, The data may not be transmitted (downlink) to the vehicle.

  In addition, the functions of the constituent blocks included in the information communication system of the above-described embodiment may be realized in whole or in part by software, or at least part of it may be realized by hardware. For example, all or part of the processing in the control units 104, 207, 225, and 306 may be realized on a computer by one or a plurality of programs, and at least a part thereof is realized by hardware. Also good.

  Further, the above-described embodiment is merely for description, and does not limit the scope of the present invention. For example, a computer program for operating the vehicle-mounted device 200 as all or part of the apparatus is stored and distributed in a computer-readable recording medium such as a memory card, CD-ROM, DVD, or MO (Magneto Optical Disk). This may be installed in another computer, for example, a mobile phone, an audio device, an electronic watch, etc., and operated as the vehicle-mounted device 200, or a process performed by the vehicle-mounted device 200 may be executed. Further, the program may be stored in a disk device or the like included in a server device on the Internet, and may be downloaded to a computer serving as the vehicle-mounted device 200 by being superimposed on a carrier wave, for example.

It is a figure for demonstrating the whole structure of the information communication system which concerns on embodiment of this invention. It is a figure which shows the structural example of the roadside radio | wireless apparatus used for the information communication system shown by FIG. It is a figure for demonstrating the structure of the onboard equipment used for the information communication system shown by FIG. It is a figure for demonstrating the structure of the output data supply signal output apparatus used for the information communication system shown by FIG. It is a figure for demonstrating the data reproduction | regeneration processing performed with the onboard equipment used for the information communication system shown by FIG. It is a figure for demonstrating the structure of the information provision server (management server) used for the information communication system shown by FIG. FIG. 3 shows an example of a processing procedure executed in the information communication system of FIG. 1. When the downlink content data is the same information as the content data broadcast in the past, the content data to the user is shown. It is a flowchart for demonstrating the procedure (operation | movement) which does not perform alerting | reporting. FIG. 3 shows an example of a processing procedure executed in the information communication system of FIG. 1, and when the period from the creation date of the downlink content data to the present has passed a predetermined period or more, the user of the content data It is a flowchart for demonstrating the procedure (operation | movement) which does not perform alerting | reporting to. FIG. 3 shows an example of a processing procedure executed in the information communication system of FIG. 1, according to the content / type of downlink content data, a procedure for preventing notification of the content data to the user ( It is a flowchart for demonstrating operation | movement. FIG. 3 shows an example of a processing procedure executed in the information communication system of FIG. 1, in order to explain a procedure (operation) in which content data received on a route that frequently passes, such as a commuting route, is not notified to the user. It is a flowchart of.

Explanation of symbols

100 Roadside device 101 On-board unit wireless communication unit (on-board unit receiving means, on-board unit transmitting means)
102 Server communication control unit (server communication control means)
103 Storage Device 104 Control Unit 108 Information Storage Unit (Information Storage Unit)
200 Onboard equipment (information communication equipment)
200A ITS on-board unit 200B Output data supply signal output device (output data supply signal output means)
201 Communication Unit 201a GPS Module 201b DSRC Module 202 Audio Processing Unit 203 Output Unit (Information Output Unit)
205 I / O device 206 Storage device (vehicle equipment ID storage means)
207 Control unit (position acquisition means, travel history generation means)
211 Roadside device wireless communication unit (roadside device reception means, roadside device transmission means)
212 Output data storage unit 213 Travel history storage unit (travel history storage means)
222 Speaker (information output means)
225 Control unit 226 Existing output data history storage detection unit 227 Output data creation date elapsed time detection unit 228 Information content detection unit 229 Commuting route detection unit 230 Output data supply signal output unit 300 Information providing server (management server)
303 General network communication control unit 304 Roadside wireless device communication control unit 305 Storage unit 306 Control unit NW1 General communication network NW2 ITS communication network

Claims (5)

An information communication device for exchanging various types of information by wireless communication with a roadside device or a roadside device installed near the road or parking lot where the vehicle passes,
Roadside wireless device transmitting means for transmitting an onboard device ID for identifying a vehicle to the roadside wireless device after a link with the roadside wireless device is established;
Roadside wireless device receiving means for receiving content data from the roadside wireless device after the link between the roadside wireless devices is established;
Control means for determining whether to supply the content data received by the roadside apparatus receiving means to an information output means to reproduce the data to be reproduced in the content data ;
With
Data to be reproduced in the content data supplied to the information output means and reproduced from among the plurality of content data received in the past up to a predetermined period before by the roadside apparatus receiving the roadside apparatus, and the roadside apparatus An already-output data history storage detection unit for determining whether or not the data to be reproduced in the latest content data received by the receiving means matches at a predetermined ratio or more;
The control means determines in the output data history storage detection unit that data to be reproduced in the content data newly received by the roadside apparatus reception means coincides at the predetermined ratio or more. If it is, the information communication apparatus does not output the content data received by the roadside apparatus reception means to the information output means.   The reproduction target data is character data,
The already-output data history storage detection unit is configured to detect characters in the content data supplied to the information output unit and reproduced from the plurality of content data received in the past up to a predetermined period before the roadside device receiving unit. 2. The information communication according to claim 1, further comprising: determining whether or not characters in the latest content data received by the roadside apparatus receiving unit match at a predetermined ratio or more. apparatus. Before SL content data, when received by the pair roadside apparatus receiving means, wherein the vehicle is provided with a commuting route detecting section for detecting whether or not running a route over through well,
The control means is that the content data newly received by the roadside device reception means is received when the commuting route detection unit is running on the route that is frequently used. 3. The information communication apparatus according to claim 1 , wherein if detected, the content data received by the roadside apparatus reception unit is not output to the information output unit. 4. An information communication method for exchanging various types of information by wireless communication with a roadside road device or a parking lot or a roadside wireless device installed in the vicinity thereof,
After the link between the roadside wireless devices is established, the roadside wireless device transmission step of transmitting the vehicle-mounted device ID for identifying the vehicle to the roadside wireless device;
A roadside device reception step for receiving content data from the roadside device after the link between the roadside devices is established;
A control step for determining whether to supply the content data received by the roadside device reception means to an information output means to reproduce the data to be reproduced in the content data ;
Data information to be reproduced in the content data supplied to the information output means and reproduced among the plurality of content data received in the past up to a predetermined period before by the roadside device reception means, and the roadside radio An output data history storage detection step for determining whether or not the data to be reproduced in the latest content data received by the device receiving means matches at a predetermined ratio or higher;
Including
In the control step, the output data history storage detection unit detects that the data to be reproduced in the content data newly received by the roadside device reception means coincides at the predetermined ratio or more. If so, the content data received by the roadside device reception means is not output to the information output means. A computer of an information communication device for exchanging various types of information by wireless communication with a roadside device installed on or near a road or parking lot where a vehicle passes,
Roadside wireless device transmitting means for transmitting an onboard device ID for identifying a vehicle to the roadside wireless device after the link between the roadside wireless devices is established;
A roadside apparatus receiving means for receiving roadside content data from the roadside apparatus after the link between the roadside apparatuses is established;
Control means for determining whether to supply the content data received by the roadside apparatus receiving means to an information output means to reproduce the data to be reproduced in the content data ;
Data to be reproduced in the content data supplied to the information output means and reproduced from among the plurality of content data received in the past up to a predetermined period before by the roadside apparatus receiving the roadside apparatus, and the roadside apparatus Already-output data history storage detecting means for determining whether or not the data to be reproduced in the latest content data received by the receiving means matches at a predetermined ratio or higher;
A program characterized by functioning as:
The control means detects the output data history storage detection unit that the data to be reproduced in the content data newly received by the roadside apparatus reception means coincides at the predetermined ratio or more. If so, the content data received by the roadside device reception means is not output to the information output means.

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