JP2007304836A - On-vehicle information presentation device and program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To minimize problems of a conventional on-vehicle apparatus which is ready for information providing systems based on a 2.5 GHz band VICS and a 5.8 GHz DSRC and may cause the problems due to overlapping of information provision receiving timing or information content between the both systems. <P>SOLUTION: This on-vehicle information presentation device is provided with a first receiving means 13 receiving first information distributed at a first frequency from a first road side machine, a second receiving means 12 receiving second information distributed at a second frequency from a second road side machine, a presentation means 16 presenting information content based on the received first or second information, a detection means 11 detecting receiving of the first and second information from the first and second road side machines installed in a parallel installation point, and a control means 11 controlling the presentation means for giving predetermined restriction to presentation of the received first or second information when detection by the detection means is carried out. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an in-vehicle information presentation apparatus that receives and presents information provided by a roadside machine, and a program that causes a computer to function as a control unit in the apparatus.

  Conventionally, as part of the Intelligent Transport System (ITS), VICS (Road Traffic Information Communication System) has been operated, which receives traffic information provided by FM multiplex broadcasting and roadside equipment with on-board equipment and displays it in graphics and characters. Yes. In VICS, information is provided at 64 [Kbps] on a highway using a 2.5 GHz band radio beacon. According to VICS, road traffic information such as traffic jams and traffic regulations edited and processed at the VICS Center is transmitted from the roadside machine in real time, and this information is received by the car navigation device and displayed overlaid on the map. You can also

  On the other hand, the DSRC (dedicated narrow area communication) system, which is the core of the intelligent transportation system, is being standardized to a system using the 5.8 GHz band that is currently used for ETC services. In other words, in the future, the DSRC system using the 5.8 GHz band will provide traffic information using 2.5 GHz band radio beacons on conventional highways, provision of information for safe driving support, ETC services, etc. A variety of services will be provided. Therefore, the VICS service using the current 2.5 GHz band is switched to DSRC-VICS that provides a similar service by 5.8 GHz band DSRC after a certain transition period.

  Patent Document 1 discloses a vehicle-mounted device that supports the above-described 2.5 GHz band VICS system and an ETC service using the 5.8 GHz band.

JP 2003-288682 A

  In the transition period from the conventional 2.5 GHz band VICS system to the 5.8 GHz band DSRC-VICS, services in both frequency bands are mixed. In the meantime, the expansion of the infrastructure for DSRC will gradually progress, so only a 2.5 GHz radio wave beacon (hereinafter referred to as “VICS roadside machine”) is installed at one point, and another point. Then, the case where the beacon (henceforth "DSRC roadside machine") of a 5.8GHz band is also installed will arise. Therefore, in this transition period, it is convenient if there is an onboard device that supports services from both the VICS roadside machine and the DSRC roadside machine.

  However, it is a problem how to handle the information transmitted from both roadside devices when the vehicle-mounted device is installed and the vehicle passes through the point where both the VICS roadside device and the DSRC roadside device are installed. . For example, when passing through such an adjoining point, traffic congestion information in a simple figure is displayed as a second level VICS information by a VICS roadside machine, in which a section where traffic congestion is occurring on the destination highway etc. is displayed in red At the same time, the DSRC roadside machine may send similar information but more detailed information such as graphics and voice.

  In this case, 1 [Mbps] which is the communication speed with the DSRC roadside machine is much faster than 64 [Kbps] which is the communication speed with the VICS roadside machine. (Hereinafter referred to as “DSRC information”) is completed first, and it is considered that there are many cases where reception of VICS information is completed thereafter. Then, despite the completion of receiving the detailed DSRC information and displaying based on it, the simple graphic based on the completed VICS information is overwritten and displayed, and the display based on the detailed DSRC information is erased. This causes inconvenience.

  In view of the problems of the conventional technology, the object of the present invention is an in-vehicle device that supports the conventional 2.5 GHz band VICS and also supports the same information providing system based on the 5.8 GHz band DSRC. It is to solve as much as possible the problems that may arise due to the timing of receiving information by both systems and the duplication of information contents.

  In order to achieve the above object, an in-vehicle information presentation device according to a first aspect of the present invention includes a first receiving unit that receives first information distributed from a first roadside device at a first frequency, and a second receiving unit. Second receiving means for receiving second information distributed by the second frequency from the roadside machine, and first information received by the first receiving means or second received by the second receiving means. Presenting means for presenting information contents based on information, and the first receiving means and the second receiving means from the first roadside machine and the second roadside machine installed side by side with the first information and the second And detecting means for detecting that information has been received, and controlling the presenting means to give a predetermined restriction on the presentation of the received first information and second information when detection by the detecting means is performed. And a control means.

  Here, as the first roadside unit, the first frequency, the first information, and the first receiving means, for example, a DSRC roadside unit, a frequency of 5.8 GHz band, DSRC information, and a DSRC terminal are applicable. As the second roadside device, the second frequency, the second information, and the second receiving means, for example, a VICS roadside device, a frequency of 2.5 GHz band, VICS information, and a VICS terminal are applicable. This may be reversed. The presenting means corresponds to a means for presenting the information content by voice output or image display based on the first information or the second information. The detection that the first information and the second information are received from the first roadside machine and the second roadside machine installed in the side of the vehicle is detected in both the first information and the second information within a predetermined short time, for example, within a few seconds. This can be done by detecting the reception. As a predetermined restriction, for example, the presentation of either one of the first information and the second information is prevented from being performed in whole or in part, or the presentation timing of either one is delayed. The thing corresponds.

  In this configuration, when the vehicle passes through the first roadside unit, the in-vehicle information presentation device receives the first information distributed from the roadside unit by the first receiving unit and presents the content by the presenting unit. can do. On the other hand, when the vehicle passes through the second roadside machine, the second information distributed from the roadside machine can be received by the second receiving means, and the contents can be presented by the presenting means. On the other hand, when the vehicle passes through a point where the first roadside machine and the second roadside machine are provided, the first receiving means and the second receiving means receive the first information and the second information from these roadside machines. This can be detected by the detecting means. In that case, the presenting means is controlled by the control means so as to give a predetermined restriction on the presentation of the received first information and second information. At that time, for example, the control unit can limit the presentation of the second information and can control the presentation unit so that the first information is preferentially presented.

  The in-vehicle information presentation device according to a second aspect of the present invention is characterized in that, in the first aspect, the predetermined restriction prevents the received second information from being presented.

  In the in-vehicle information presentation device according to a third aspect of the present invention, in the first aspect, the predetermined restriction is such that the oldest one of the received first information and second information is not presented. It is what makes it.

  In the in-vehicle information presentation device according to a fourth aspect of the present invention, in the first aspect, the predetermined restriction is that a predetermined period of time has passed for any one of the received first information and second information. It is characterized in that the presentation is performed from the above.

  An on-vehicle information presentation device according to a fifth aspect of the present invention is a first receiving means for receiving first information distributed from a first roadside device at a first frequency, and a second receiving device from a second roadside device. Based on the second receiving means for receiving the second information distributed by frequency and the first information received by the first receiving means or the second information received by the second receiving means, When the first information is received by the first receiving means at the first point at the first point and the second point that reaches after the first point and the second point that reaches the second point, the second point is the second point. (2) Regarding the presentation by the presenting means for the second information received by the receiving means, it comprises control means for controlling the presenting means so as to give a predetermined restriction to the second information.

  According to a sixth aspect of the present invention, there is provided the in-vehicle information presentation device according to the fifth aspect, wherein the predetermined restriction is based on the first point until a predetermined time elapses from the reception time of the first information. When the second information is received before the vehicle moves out of the predetermined range, the presenting means based on the second information is not presented.

  In the on-vehicle information presentation device according to a seventh aspect based on the fifth aspect, the predetermined restriction is that the time stamp of the second information received at the second point is received at the first point. When the information matches the time stamp of the information, the presenting means does not present the second information received at the second point.

  In the on-vehicle information presentation device according to an eighth aspect based on the fifth aspect, the predetermined restriction includes that the first information includes image data, the second information includes image data and audio data, and When the time stamps of the first information and the second information match or the difference between the reception times of the first information and the second information is equal to or smaller than a predetermined value, the image data is presented for the first information. However, with respect to the second information, the voice data is presented and the image data is not presented.

  According to a ninth aspect of the present invention, there is provided the in-vehicle information presentation device according to the fifth aspect, wherein the predetermined restriction is that the first information and the second information are of a map display type, and the second point from the first point. When the predetermined time has not elapsed until the time is reached, the presentation based on the second information is not performed.

  An on-vehicle information presentation device according to a tenth aspect of the invention is a first receiving means for receiving first information distributed from a first roadside device at a first frequency, and a second receiving device from a second roadside device. Second receiving means for receiving second information distributed by frequency, first display means for performing display based on the first information received by the first receiving means, and reception by the second receiving means And second display means for performing display based on the second information independently from the first display means.

  A program according to an eleventh invention causes a computer to function as control means in the in-vehicle information presentation device according to any one of the first to ninth inventions.

  According to the present invention, when it is detected that the first information and the second information are received from the first roadside machine and the second roadside machine installed in the side, the received first information and second information are presented. Since the presenting means is controlled to give a predetermined restriction on the problem, the problem caused by the time information or the second information presentation overlapping as much as possible can be solved as much as possible.

  In addition, when it is detected that the first information and the second information are received from the first roadside machine and the second roadside machine installed in the side, the received second information is not presented. For example, it is possible to prevent the presentation of more detailed first information from being overwritten and erased by the second information, and to present the first information preferentially.

  In addition, when it is detected that the first information and the second information are received from the first roadside machine and the second roadside machine installed in the side, the time stamp of the received first information and second information Since the old one is not presented, new information can be presented with priority.

  Moreover, when it is detected that the first information and the second information are received from the first roadside machine and the first roadside machine installed in the side, either one of the received first information and second information Because the presentation is made after a predetermined period of time has passed, both information should be presented while preventing one information from being overwritten and erased immediately by the other. Can do.

  In addition, when the first information is received at the first point at the first point and the second point that arrives thereafter, the second information received at the second point is presented by the presenting means. Since the presentation means is controlled to give a predetermined restriction on the two information, the problem that may occur based on the difference in the degree of detail in the contents of the first information and the second information can be solved as much as possible.

  The second information is received when the second information is received before a predetermined time elapses from when the first information is received or before the vehicle moves out of the predetermined range with respect to the first point. For example, the presentation of more detailed first information is maintained without being erased by the second information for a predetermined time, so that the presentation of rough second information is performed. Can be eliminated.

  Further, when the time stamp of the second information received at the second point matches the time stamp of the first information received at the first point, the presenting means for the second information received at the second point Thus, it is possible to prevent information that is not new content from being presented again at the second point.

  Further, the first information includes image data, the second information includes image data and audio data, and the time stamps of the first information and the second information coincide with each other, or the reception times of the first information and the second information When the difference is less than or equal to the predetermined value, the image data is presented for the first information, but the audio data is presented for the second information, and the image data is not presented. Can synthesize and display the display of the image data of the first information and the audio output of the second information.

  In addition, when the first information and the second information are of a map display type and a predetermined time has not elapsed from the first point to the second point, presentation based on the second information is performed. Therefore, for example, the presentation of information by the map display based on the more detailed first information is overwritten by the presentation of the information by the map display based on the rough second information even though it is valid. Can be prevented.

  In addition, since the first display means for performing display based on the first information and the second display means for performing display based on the second information separately from the first display means are provided, The display based on the second information and the display based on the second information can be performed independently and in parallel.

  FIG. 1 is a block diagram showing a configuration of a navigation apparatus according to an embodiment of the present invention. As shown in the figure, this navigation device includes a map database and a current position detecting means, and includes a navigation processing unit 11 that performs various processes for navigation, and a VICS receiving unit 12 that receives VICS information from a VICS roadside unit. The DSRC receiving unit 13 that receives DSRC information from the DSRC roadside machine, the VICS receiving unit 13 that performs demodulation processing on the signals received by the VICS receiving unit 12, and outputs presentation data by the DSRC receiving unit 13 A DSRC processing unit 15 that performs demodulation processing on the received signal and outputs data for presentation, and an input / output unit 16 that functions as an interface between the navigation device and the user are provided.

  The input / output unit 16 includes an operation input unit 16a for a user to input an operation, an image output unit 16b that performs output using an image, and an audio output unit 16c that performs output using audio. The presentation data from the VICS processing unit 14 and the DSRC processing unit 15 include audio data and image data, which are supplied to the audio output unit 16c and the image output unit 16b, respectively, and output as audio and images.

  The navigation processing section 11 causes the image output section 16b to display a map for route guidance and the current position based on the map database, the current position detected by the current position detecting means, and outputs the guidance voice as voice. It has the function to output from the part 16c. The VICS receiving unit 12 receives VICS information from a VICS roadside device arranged at a required location on the expressway. The VICS information includes a level 1 character display type, a level 2 simple graphic display type, and a level 3 map display type. Based on the output of the VICS processing unit 14, display corresponding to each level is performed in the image output unit 16b. The navigation processing unit 11 has a function of appropriately prohibiting output of image data and audio data from the DSRC processing unit 15 and the VICS processing unit 14 to the input / output unit 16.

  FIG. 2 is a flowchart showing a first example of processing by the control unit of the navigation processing unit 11. This operation is repeated at predetermined intervals as part of the processing by the control unit. In this process, when the vehicle passes through a point where both the VICS roadside machine and the DSRC roadside machine are installed, the navigation device mounted on the vehicle receives both the VICS information and the DSRC information. DSRC information is presented without presenting information.

  That is, when the processing of FIG. 2 is started, the control unit first determines in step 21 whether or not the VICS information and the DSRC information have been received at the joint location. Such reception is performed when a vehicle equipped with a navigation device passes through a point where a VICS roadside machine and a DSRC roadside machine are provided.

  Here, the determination as to whether or not the VICS information and the DSRC information have been received at the point of attachment is, for example, within a predetermined time from the start of reception of the VICS information or the DSRC information that has been started first, for example, a few seconds Within this, it is possible to check whether or not reception of the other has started. If reception of the other side is started within a predetermined time, it is determined that the VICS information and DSRC information are received at the adjacent point, and if reception of the other side is not started within the predetermined time, it is received at the adjacent point. Is not judged.

  This predetermined time corresponds to several seconds, for example. At the point where both the VICS roadside machine and the DSRC roadside machine are installed, the reception start time of the VICS information and the DSRC information varies depending on the size of the area set as the side point, and further, the VICS information and the DSRC information The time required for reception varies depending on the amount of data of the received VICS information and DSRC information, the speed of the vehicle, and the like. Therefore, it is necessary to determine the predetermined time so that it is possible to correctly recognize the reception of the VICS information and the DSRC information at the joint point in consideration of these variable factors.

  Further, in order to determine whether or not reception of VICS information or DSRC information has been started, it is necessary to determine whether or not VICS information or DSRC information is being received. This can be done by checking the strength of the received signal in the unit 12 and the DSRC receiving unit 13. If the strength of the received signal at the VICS receiver 12 is equal to or greater than a predetermined value, it is determined that the VICS information is being received, and if the strength of the received signal at the DSRC receiver 13 is equal to or greater than the predetermined value, it is determined that the DSRC information is being received. be able to.

  In addition, based on the beacon ID included in the received information, it is a radio wave beacon that uses the 2.5 GHz band, that is, information from the VICS roadside machine, or a beacon that uses the 5.8 GHz band, that is, information from the DSRC roadside machine. Can be distinguished. Therefore, when it is necessary to determine whether VICS information or DSRC information is being received based on the information of the part through which both pieces of information pass together, check the beacon ID included in the information of the part. Thus, the determination can be made. Further, based on whether the VICS processing unit 14 has detected the VICS information including the beacon ID of the VICS roadside device, and whether the DSRC processing unit 15 has detected reception of the information including the beacon ID of the DSRC roadside device, Alternatively, it can be determined whether DSRC information is being received.

  If it is determined in step 21 that the VICS information and the DSRC information have not been received at the location, the processing of FIG. 2 is immediately terminated. If it is determined that the VICS information and the DSRC information have been received at the location, the process proceeds to step 22 and the VICS processing unit 14 is controlled so that image data and audio data for presenting the received VICS information are not output. . Then, the process of FIG. 2 is complete | finished.

  According to this, when the reception of the VICS information and the reception of the DSRC information competes by passing through the joint point of the VICS roadside machine and the DSRC roadside machine, the presentation of the information based on the VICS information is prohibited. Display or audio output based on DSRC information that has been received before or after the completion of reception is immediately replaced by display or audio output based on VICS information that has been received immediately after Can be prevented.

  FIG. 3 is a flowchart showing a second example of processing by the control unit of the navigation processing unit 11. This process is repeated at predetermined intervals as part of the process by the control unit. In this process, when the navigation device receives both the VICS information and the DSRC information by the vehicle passing through the side point where both the VICS roadside device and the DSRC roadside device are installed, the time stamp included in the received information Based on the above, the newer information is presented without presenting the older information.

  That is, when the processing of FIG. 3 is started, the control unit first determines in step 31 whether or not the VICS information and the DSRC information have been received at the joint location. Such reception is performed when a vehicle equipped with a navigation device passes through a point where a VICS roadside machine and a DSRC roadside machine are provided. The determination as to whether the VICS information and the DSRC information have been received at the side location can be made in the same manner as in the case of the process of FIG.

  If it is determined that the VICS information and the DSRC information have not been received at the side location, the processing in FIG. 3 is immediately terminated. If it is determined that the VICS information and the DSRC information have been received at the location, the process proceeds to step 32, and the VICS information and the DSRC information, the older one of the received image data and audio data are not output. The processing unit 14 or the DSRC processing unit 15 is controlled. Thereafter, the process of FIG. 3 is terminated. Which of the received VICS information and DSRC information is old can be determined by a time stamp included in the information.

  According to this, when the reception of VICS information and the reception of DSRC information competed by passing through the joint location of the VICS roadside machine and the DSRC roadside machine, the presentation of information based on the older information is prohibited. It is possible to prevent the display or audio output based on the newer information from being instantaneously replaced by the display or audio output based on the older information that has been received immediately thereafter.

  FIG. 4 is a flowchart showing a third example of processing in the control unit of the navigation processing unit 11. This process is repeated at predetermined intervals as part of the process by the control unit. In this process, when DSRC information is received, display of VICS information received at another point thereafter is not performed until a predetermined time has elapsed or the vehicle has moved a predetermined distance. The DSRC information is displayed with priority.

  That is, when processing is started, the control unit first determines in step 41 whether DSRC information has been received. This determination can be made based on the electric field strength of the received signal in the DSRC receiver 13 and the beacon ID in the received signal, as in the case of the process of FIG. If it is determined in step 41 that DSRC information has been received, the process proceeds to step 42, and a prohibition window that defines a temporal or spatial range in which presentation of subsequent VICS information is prohibited is set. Specifically, the timer value or mileage integrated value that is compared to determine whether the time or spatial range has been exceeded is reset, or the spatial range is set by specifying longitude and latitude. . When the timer value or the accumulated value of the travel distance is reset, these values are then accumulated according to the elapsed time or according to the travel distance.

  However, if only the time range is specified, in the case of traffic jams, the prohibition window may be canceled and the presentation of VICS information may be permitted even though the vehicle is hardly moving, so avoid it. For this purpose, it is preferable to set a prohibition window so as to define a spatial range. When this setting is made, presentation of VICS information is prohibited until the prohibition window is canceled by exceeding the temporal and / or spatial range. That is, the control unit controls the VICS processing unit 14 so as not to output image data and audio data for presentation based on VICS information. After setting the prohibition window in step 42, the processing in FIG.

  On the other hand, if it is determined in step 41 that the DSRC information has not been received, the process proceeds to step 43 to determine whether or not the prohibition window is set in step 42. If it is determined that the prohibition window has not been set, the processing in FIG. 4 ends. If it is determined that the prohibited window has been set, it is determined in step 44 whether or not the prohibited window cancellation condition is satisfied. That is, it is determined whether or not the temporal and / or spatial range is removed. This determination is performed based on whether the timer value or the accumulated value of the travel distance has reached a predetermined value, or whether the current position of the vehicle has deviated from the spatial range set by the longitude / latitude values. be able to.

  If it is determined in step 44 that the release condition is satisfied, the prohibited window is released in step 45, and the process of FIG. Thereafter, until new DSRC information is received, the received VICS information is presented in response to reception of the VICS information. If it is determined that the release condition is not satisfied, the process of FIG.

  According to this, when reception of DSRC information is started, a predetermined temporal or spatial prohibition window is set, and the presentation of VICS information is prohibited in the window. It is possible to eliminate the presentation of unnecessary VICS information for a predetermined period of time.

  FIG. 5 is a flowchart showing a fourth example of processing in the control unit of the navigation processing unit 11. This process is repeated at predetermined intervals as part of the process by the control unit. In this process, for example, when the VICS information is received, if the time stamp of the DSRC information received and presented at a different point last time matches the time stamp of the VICS information received this time, The presentation is not performed. The same applies when the reception order is reversed.

  That is, when the process is started, in step 51, the control unit first received the current VICS information when the previous DSRC information was received, or received the current DSRC information when the previous VICS information was received. Determine if. This determination can be made based on the previously received information, which will be described later, stored in a predetermined area.

  If it is determined that neither reception has been performed, the processing of FIG. 5 is immediately terminated. If it is determined that any of the receptions has been performed, in step 52, the time stamp of the received VICS information or DSRC information is compared with the time stamp in the previous reception information stored in the predetermined area. In step 53, it is determined whether or not the time stamps match.

  If it is determined that the two time stamps do not match, in step 54, the received VICS information or DSRC information time stamp is displayed together with information indicating whether the currently received information is either VICS information or DSRC information. As the previous reception information, the predetermined area is overwritten and stored, and the process of FIG. 5 is terminated. In this case, presentation based on the received VICS information or DSRC information is performed.

  On the other hand, if it is determined in step 53 that both time stamps match, the VICS processing unit 14 or the DSRC processing unit 15 is controlled in step 55 so that the presentation based on the received VICS information or DSRC information is not performed. Then, the process of FIG. In this case, presentation based on the received VICS information or DSRC information is not performed.

  According to this, when the VICS information and the DSRC information are received in this order or in the reverse order, the time stamp of the VICS information or DSRC information presented last time and the time stamp of the VICS information or DSRC information received this time Since the VICS information or the DSRC information received this time is not presented, the new VICS information or the DSRC information can always be presented.

  FIG. 6 is a flowchart showing a fifth example of processing in the control unit of the navigation processing unit 11. This process is repeated at predetermined intervals as part of the process by the control unit. In this process, when VICS information is received and DSRC information is subsequently received at another point, if the time stamps of VICS information and DSRC information match, image output is prohibited for DSRC information. ing.

  That is, when processing is started, the control unit first determines in step 61 whether or not VICS information has been received. If it is determined that the VICS information has been received, the time stamp of the VICS information received in step 62 is overwritten and stored in a predetermined storage area, and the processing in FIG. 6 is terminated. If it is determined that the VICS information has not been received, it is determined in step 63 whether the DSRC information has been received. If it is determined that the DSRC information has not been received, the processing in FIG. 6 is terminated.

  If it is determined in step 63 that the DSRC information has been received, the process proceeds to step 64, where it is determined whether or not the time stamp stored in the predetermined area matches the time stamp of the received DSRC information. . If it is determined that they do not match, the processing in FIG. 6 is terminated. If it is determined that they match, the DSRC processing unit is controlled in step 65 so that the image data is not output from the DSRC processing unit 15. Thereafter, the process of FIG. 6 is terminated.

  According to this, after receiving the VICS information and presenting the information, when the DSRC information is received at another point and the time stamps of both coincide, the image from the DSRC processing unit 15 is received. Since the data output is prohibited, the image display by the VICS information is maintained, and the DSRC information is presented only by the voice output.

  FIG. 7 is a flowchart showing a sixth example of processing in the control unit of the navigation processing unit 11. This process is repeated at predetermined intervals as part of the process by the control unit. In this process, when VICS information is received and then DSRC information is received at another point within a predetermined time, image output based on the DSRC information is prohibited.

  That is, when processing is started, the control unit first determines in step 71 whether or not VICS information has been received. If it is determined that the VICS information has been received, in step 72, the reception time of the received VICS information is overwritten and stored in a predetermined storage area, and the processing of FIG. If it is determined that the VICS information has not been received, it is determined in step 73 whether the DSRC information has been received. If it is determined that the DSRC information has not been received, the processing in FIG. 7 is terminated.

  If it is determined in step 73 that the DSRC information has been received, the process proceeds to step 74, and whether or not the difference between the time stored in the predetermined area and the reception time of the received DSRC information is equal to or less than a predetermined value. Determine whether. If it is determined that it is not less than the predetermined value, the processing in FIG. 7 is terminated. If it is determined that the value is equal to or smaller than the predetermined value, the DSRC processing unit 15 is controlled in step 75 so that the image data is not output from the DSRC processing unit 15. Then, the process of FIG. 7 is complete | finished.

  According to this, when the DSRC information is received at another point within a predetermined time after the VICS information is received and presented based on the VICS information, the output of the image data from the DSRC processing unit 15 is prohibited. Therefore, the image display by the VICS information is maintained, and the DSRC information is presented only by voice output.

  FIG. 8 is a flowchart showing a seventh example of processing in the control unit of the navigation processing unit 11. This process is repeated at predetermined intervals as part of the process by the control unit. In this process, when the vehicle passes through a point where both the VICS roadside machine and the DSRC roadside machine are installed, the navigation device mounted on the vehicle receives both the VICS information and the DSRC information. The presentation of the other information is prohibited until a predetermined time elapses after the presentation is made and a timeout occurs.

  That is, when the process is started, the control unit first determines in step 81 whether or not the VICS information and the DSRC information have been received at the joint location. Such reception is performed when a vehicle equipped with a navigation device passes through a point where a VICS roadside machine and a DSRC roadside machine are provided. This determination can be performed in the same manner as in the process of FIG.

  If it is determined in step 81 that the VICS information and the DSRC information have not been received at the side location, the processing in FIG. 8 is immediately terminated. If it is determined that the VICS information and the DSRC information have been received at the location, the process proceeds to step 82, where the presentation of the VICS information or the DSRC information that has been received late is completed and the presentation is performed first. The VICS processing unit 14 or the DSRC processing unit 15 is controlled so as not to be performed for a predetermined time from the presentation time of the VICS information or DSRC information. As the predetermined time, a time-out time set for VICS information or DSRC information that has already been received and presented is adopted. Thereafter, the process of FIG. 8 is terminated. In this case, the presentation of the VICS information or DSRC information for which reception has been completed later is performed after the elapse of a predetermined time.

  According to this, until the time-out time for the presentation has elapsed from the presentation time of the VICS information or DSRC information of the first reception completed, the presentation of the VICS information or DSRC information of the reception completed later is performed. Therefore, it is possible to secure the presentation until the presentation of the VICS information or the DSRC information that has been received first reaches a timeout, and then present the VICS information or the DSRC information that has been received afterwards. Therefore, it is possible to prevent the presentation of the VICS information or the DSRC information that has been received first from being immediately overwritten or blocked by the presentation of the VICS information or the DSRC information that has been received later.

  FIG. 9 is a flowchart showing an eighth example of processing in the control unit of the navigation processing unit 11. This process is repeated at predetermined intervals as part of the process by the control unit. In this process, until the predetermined time elapses after receiving map display type DSRC information, even if map display type VICS information is received at another point, presentation based on the map display type DSRC information is not performed. .

  That is, when the processing of FIG. 9 is started, the control unit first determines in step 91 whether or not map display type DSRC information has been received. The map display type DSRC information corresponds to level 3 information in the conventional VICS. If it is determined that the map display type DSRC information has been received, a timer for determining whether or not a predetermined time, for example, 5 minutes has elapsed since the reception of the DSRC information in step 92 is reset, and the processing of FIG. Exit. In this case, thereafter, based on the received DSRC information, a graphic indicating traffic information relating to detailed traffic jams is displayed on the navigation map.

  If it is determined in step 91 that the map display type DSRC information has not been received, the process proceeds to step 93 to determine whether or not the map display type, that is, level 3 VICS information has been received. If it is determined that it has not been received, the processing of FIG. 9 ends. If it is determined that it has been received, the process proceeds to step 94, where it is determined whether or not a predetermined time, for example, 5 minutes has elapsed since the last reception of the map display type DSRC information. This determination is made based on the timer that is reset in step 92.

  If it is determined in step 94 that the predetermined time has elapsed, the processing in FIG. 9 is terminated. In this case, thereafter, on the basis of the received map display type VICS information, a graphic indicating traffic information relating to traffic jams is displayed on the navigation map. If it is determined in step 94 that the predetermined time has not elapsed, the process proceeds to step 95, where the VICS processing unit 14 is controlled so that the output from the VICS processing unit 14 based on the received VICS information is not performed. Thereafter, the process of FIG. 9 is terminated.

  According to this, since the map display type VICS information is not received even if the predetermined time elapses after the map display type DSRC information is received, the presentation based on it is not performed. It is possible to prevent the display related to detailed information from being replaced with the display based on rough information based on the VICS information.

  FIG. 10 is a block diagram showing a configuration of a navigation device according to another embodiment of the present invention. In the figure, the same reference numerals as those in FIG. 1 denote the same elements as in FIG. In the figure, 161 is an image output unit for presenting DSCR information provided in the input / output unit 16, and 162 is an image output unit for presenting VICS information provided in the input / output unit 16. That is, in the navigation device of FIG. 1, the image output unit 16b is shared when presenting DSRC information and VICS information. However, in this embodiment, the dedicated image output unit 161 and the image output unit 162 are used, respectively. it can.

  In this case, there is no need to adjust the display timing and display prohibition measures as described above for the DSRC information and VICS information, and the received DSRC information and VICS information can be sent to the image output unit 161 at normal timing without any limitation. And 162. Therefore, the user can refer to the display of the image output unit 116 or 162 as necessary.

  Note that the present invention is not limited to the above-described embodiment, and can be implemented with appropriate modifications. For example, although not mentioned above, the user may be allowed to set which of the processes in FIGS. At that time, it may be configured to be able to perform a combination of possible processes. For example, the processes of FIGS. 2, 3 and 8 are processes when reception of VICS information and reception of DSRC information compete at the point where the VICS roadside machine and the DSRC roadside machine are located, and FIGS. Since the processing in FIG. 9 is processing when VICS information and DSRC information are received at different points, it is possible to combine any of the former processing and any of the latter processing.

  In the above-described embodiment, the example in which the present invention is applied to the navigation device has been described. However, the present invention is not limited to this, and the present invention can be implemented as an in-vehicle device dedicated to traffic information reception that does not have a navigation function, It can also be implemented as an in-vehicle device associated with the vehicle, or as an in-vehicle device associated with a car audio device.

It is a block diagram which shows the structure of the navigation apparatus which concerns on one Embodiment of this invention. It is a flowchart which shows the 1st example of the process by the control part of the navigation process part in the apparatus of FIG. 7 is a flowchart showing a second example of processing by the control unit of the navigation processing unit in the apparatus of FIG. 1. 7 is a flowchart showing a third example of processing by the control unit of the navigation processing unit in the apparatus of FIG. 1. 7 is a flowchart illustrating a fourth example of processing by a control unit of a navigation processing unit in the apparatus of FIG. 1. 10 is a flowchart showing a fifth example of processing by the control unit of the navigation processing unit in the apparatus of FIG. 1. 7 is a flowchart showing a sixth example of processing by the control unit of the navigation processing unit in the apparatus of FIG. 1. It is a flowchart which shows the 7th example of the process by the control part of the navigation process part in the apparatus of FIG. It is a flowchart which shows the 8th example of the process by the control part of the navigation process part in the apparatus of FIG. It is a block diagram which shows the structure of the navigation apparatus which concerns on another embodiment of this invention.

Explanation of symbols

11: Navigation processing unit, 12: VICS receiving unit, 13: DSRC receiving unit, 14: VICS processing unit, 15: DSRC processing unit, 16: input / output unit, 16a: operation input unit, 16b: image output unit, 16c: Audio output unit, 161: DSRC image output unit, 162: VICS image output unit.

Claims (11)

First receiving means for receiving first information distributed by a first frequency from a first roadside machine;
Second receiving means for receiving second information distributed by the second frequency from the second roadside machine;
Presenting means for presenting information content based on first information received by the first receiving means or second information received by the second receiving means;
Detecting means for detecting that the first receiving means and the second receiving means have received the first information and the second information from the first roadside machine and the second roadside machine installed side by side;
And a control means for controlling the presenting means so as to give a predetermined restriction on the presentation of the received first information and second information when the detection means performs the detection. Information presentation device.   The in-vehicle information presentation apparatus according to claim 1, wherein the predetermined restriction is to prevent presentation of the received second information.   The in-vehicle use according to claim 1, wherein the predetermined restriction is to prevent presentation of an older one of the received first information and second information with a time stamp. Information presentation device.   The predetermined restriction is such that any one of the received first information and second information is presented after a predetermined period. The in-vehicle information presentation device according to 1. First receiving means for receiving first information distributed by a first frequency from a first roadside machine;
Second receiving means for receiving second information distributed by the second frequency from the second roadside machine;
Presenting means for presenting information content based on first information received by the first receiving means or second information received by the second receiving means;
When the first information is received by the first receiving means at the first point at the first point and the second point that reaches the first point, the first point is received by the second receiving unit at the second point. An on-vehicle information presentation apparatus comprising: control means for controlling the presentation means to give a predetermined restriction on the second information with respect to presentation of the second information by the presentation means.   The predetermined restriction is that the second information is received until a predetermined time elapses from the time when the first information is received or until the vehicle leaves a predetermined range with respect to the first point. 6. The in-vehicle information presentation apparatus according to claim 5, wherein, when performed, the presentation by the presenting unit based on the second information is not performed.   The predetermined restriction is that the second information received at the second point is received at the second point if the time stamp of the second information matches the time stamp of the first information received at the first point. 6. The in-vehicle information presentation apparatus according to claim 5, wherein two information is not presented by the presenting means.   The predetermined restriction is that the first information includes image data, the second information includes image data and audio data, and the time stamps of the first information and the second information match or the first information When the difference between the reception times of the information and the second information is less than or equal to a predetermined value, the image data is presented for the first information, but the audio data is presented for the second information, and the image data is 6. The in-vehicle information presentation device according to claim 5, wherein the information is not presented.   The predetermined limit is determined when the first information and the second information are of a map display type and the predetermined time has not elapsed from the first point to the second point. The in-vehicle information presentation apparatus according to claim 5, wherein presentation based on information is prevented from being performed. First receiving means for receiving first information distributed by a first frequency from a first roadside machine;
Second receiving means for receiving second information distributed by the second frequency from the second roadside machine;
First display means for performing display based on first information received by the first receiving means;
An in-vehicle information presentation apparatus comprising: second display means for performing display based on second information received by the second reception means independently of the first display means. A program for causing a computer to function as a control means in the in-vehicle information presentation device according to claim 1.

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