JP2008015851A - Communication equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide communication equipment capable of relatively easily and inexpensively presenting information obtained by inter-vehicle communication. <P>SOLUTION: The communication equipment is provided with a capturing means for capturing data provided by a VICS (vehicle information and communication system), a transmitting and receiving part 3 for performing inter-vehicle communication, a converting means for converting data obtained as a result of inter-vehicle communication into a data format of the VICS, and an outputting means for selecting either the captured first data or the converted second data and outputting the selected data to a navigation device 11 corresponding to the VICS. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a communication device, and more particularly to a communication device for realizing safety of road traffic and the like.

  Research in various fields is being promoted for advanced safety such as accident avoidance, one of which is inter-vehicle communication. Inter-vehicle communication is greatly expected to contribute to collision avoidance and coordinated operation (for example, lane change and overtaking, ensuring safety at the time of merging, and realizing optimization of traffic flow, etc.). For example, the following Patent Documents 1 and 2 describe communication of road traffic information between vehicles.

  FIG. 1 is a block diagram schematically showing an example of a conventional inter-vehicle communication system. In the figure, reference numeral 1 denotes an inter-vehicle communication device. The inter-vehicle communication device 1 includes a microcomputer 2 and a transmission / reception unit 3. A transmission / reception unit 3 is connected to the microcomputer 2 so that data received by the antenna 4 can be acquired via the transmission / reception unit 3 or appropriate data can be transmitted from the antenna 4 via the transmission / reception unit 3. It has become. The transmitting / receiving unit 3 performs processing for converting received analog data into digital data.

  Further, the microcomputer 2 analyzes data acquired through the transmission / reception unit 3 (that is, data obtained by inter-vehicle communication) and transmits necessary data to the navigation device 5. The navigation device 5 includes a microcomputer 6 and a display unit 7, and displays information to be provided to the user on the display unit 7 based on data transmitted from the inter-vehicle communication device 1.

  The microcomputer 2 is connected to a GPS receiver 8, a vehicle speed sensor 9, and the like, so that the microcomputer 2 can acquire position data, vehicle speed data, and the like of the host vehicle. Further, the microcomputer 2 analyzes the acquired position data and vehicle speed data of the own vehicle, and transmits necessary data from the antenna 4 to the other vehicle (the inter-vehicle communication device 1 installed in the vehicle) via the transmission / reception unit 3. It has become.

  By the way, in order to be able to display the information obtained by the inter-vehicle communication on the display unit of the navigation device, the navigation device must be able to recognize the data transmitted from the inter-vehicle communication device. That is, compatibility is required between the navigation device and the inter-vehicle communication device.

  Therefore, even if the vehicle is equipped with a navigation device, if the navigation device and the inter-vehicle communication device are not compatible, the navigation device must be replaced with one compatible with the inter-vehicle communication device. It was. Therefore, it has been difficult to realize inexpensive presentation of information obtained by inter-vehicle communication.

In addition, it is very difficult to replace a genuine navigation device (a navigation device that is already installed in a vehicle at the time of sale). Therefore, if a genuine navigation device is not compatible with a vehicle-to-vehicle communication device, it is practically impossible to present information obtained by vehicle-to-vehicle communication in the vehicle.
JP 2003-187386 A JP-A-2005-250666

Means for solving the problems and their effects

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a communication apparatus capable of presenting information obtained by vehicle-to-vehicle communication relatively easily and inexpensively.

  In order to achieve the above object, a communication device (1) according to the present invention is obtained as a result of inter-vehicle communication, a capturing means for capturing data provided by a traffic information providing system, a transmitting / receiving means for performing inter-vehicle communication. The conversion means for converting the data into the data format of the traffic information providing system, the first data captured by the capture means, and the second data converted by the conversion means are selected, Output means for outputting to an information presentation device corresponding to the traffic information providing system.

  An example of the traffic information providing system is VICS (Vehicle Information and Communication System). FIG. 2 is a block diagram schematically showing an example of a navigation system corresponding to a conventional VICS. In the figure, reference numeral 11 denotes a navigation device compatible with VICS. The navigation device 11 includes a microcomputer 12 and a display unit 7.

  Signals received by the FM multiplex receiving antenna 14a, the optical beacon light receiving unit 15a, and the radio beacon receiving antenna 16a are respectively sent to the VICS unit 17 via the FM multiplex receiver 14b, the optical beacon receiver 15b, and the radio beacon receiver 16b. The VICS information that is input and extracted from the received signal is input to the input terminal 13 of the navigation device 11 via the communication line L. Since the navigation device 11 is compatible with VICS (that is, compatible with the VICS unit 17), the input VICS information can be displayed on the display unit 7.

According to the communication device (1), data obtained as a result of inter-vehicle communication is converted into the data format of the traffic information providing system, and the converted data (second data) is output to the information presentation device. .
Therefore, even if the information presenting device is not compatible with the presentation of information obtained by inter-vehicle communication, if the information presenting device is compatible with the traffic information providing system, the information presenting device can obtain information obtained by inter-vehicle communication. Can be presented. As a result, it is not necessary to replace the entire system, and it is possible to realize presentation of information obtained by inter-vehicle communication relatively easily and inexpensively.

  As described above, the traffic information providing system includes VICS. The information presentation device includes a navigation device. Therefore, even if the navigation device is not compatible with presentation of information obtained by inter-vehicle communication, if the navigation device is compatible with VICS, information obtained by inter-vehicle communication can be presented by the navigation device.

  According to the communication device (1), the data provided by the traffic information providing system is taken in, and either the data (the first data) or the second data is selected to present the information. Output to the device.

  Accordingly, the first data can be output not via the communication device (1) but directly to the information presentation device. Further, the first data and the second data are not output from the communication device (1) to the information presentation device at the same timing. Thereby, it can prevent that said 1st data and said 2nd data are input into the said information presentation apparatus at the same timing.

  In brief, the communication device (1) interrupts between the traffic information providing system and the information presenting device, and sends information provided by the traffic information providing system via the communication device (1). Information output to the information presentation device and information obtained by inter-vehicle communication is output to the information presentation device as if it were information provided by the traffic information providing system (that is, in a pseudo manner).

  By the way, as shown in FIG. 2, there are many relatively old type navigation devices that are separated from the VICS unit 17. In the case of such an old type navigation device 11, since the VICS unit 17 is retrofitted, the communication line L connecting the VICS unit 17 and the navigation device 11 goes out of the navigation device 11. It is relatively easy to break in between.

  FIG. 3 is a block diagram schematically showing an example of a navigation system including a relatively new type of navigation device. In the figure, reference numeral 21 denotes a navigation apparatus corresponding to VICS, and the navigation apparatus 21 includes a navigation unit 22, a VICS unit 17, and various receivers 14b, 15b, and 16b. The navigation unit 22 includes a microcomputer 23 and a display unit 7. In addition, signals received by the FM multiple receiving antenna 14a, the optical beacon light receiving unit 15a, and the radio beacon receiving antenna 16a are input to the navigation device 21 from the input terminals 24 to 26, respectively.

  As shown in FIG. 3, in the case of a new type of navigation device 21, there are many cases in which the VICS unit 17 and various receivers 14b, 15b, and 16b are incorporated. In the case of this type of navigation device 21, the communication line L does not go out of the navigation device 21, and the navigation device 21 is captured by the FM multiple reception antenna 14 a, the optical beacon light receiving unit 15 a, and the radio beacon reception antenna 16 a. The high frequency VICS signal to be input is input.

  Therefore, the communication device (1) includes a modulation unit that modulates a high-frequency signal, and the output unit outputs the first data or the second data to the information presentation device via the modulation unit. To be.

  For example, the signal is modulated into a signal (high frequency signal) equivalent to the signal received by the FM multiplex receiving antenna 14a, the optical beacon light receiving unit 15a, and the radio beacon receiving antenna 16a, and output to the navigation device 21. As a result, it is possible to deal with a new type of navigation device 21 incorporating the VICS unit 17 and various receivers 14b, 15b, and 16b.

  Further, the communication device (2) according to the present invention includes a capturing device for capturing video data obtained by the photographing device, a transmitting / receiving device for performing vehicle-to-vehicle communication, and data obtained as a result of the vehicle-to-vehicle communication. The display device selects one of conversion means for converting into video data that conforms to the specifications of the video data, first video data captured by the capture means, and second video data converted by the conversion means. Output means for outputting to the video input terminal.

According to the communication device (2), data obtained as a result of the inter-vehicle communication is converted into video data that conforms to the specifications of the display device, and the converted data (second video data) is the video of the display device. Output to the input terminal.
Therefore, even if the display device does not support presentation of information obtained by inter-vehicle communication, information obtained by inter-vehicle communication can be presented by the display device. As a result, it is not necessary to replace the entire system, and it is possible to realize presentation of information obtained by inter-vehicle communication relatively easily and inexpensively.

Further, according to the communication device (2), the data obtained by the photographing means is captured, and either the data (the first video data) or the second video data is selected and the display device is selected. To the video input terminal.
Therefore, the first video data can be output not via the display device but via the communication device (2). Further, the first video data and the second video data are not output from the communication device (2) to the display device at the same timing. Accordingly, it is possible to prevent the first video data and the second video data from being input to the display device at the same timing.

  Briefly, the communication device (2) interrupts between the photographing means and the display device, and the video data obtained by the photographing means is sent to the display device via the communication device (2). The information obtained by the vehicle-to-vehicle communication is outputted to the display device as if it were video data obtained by the photographing means (that is, in a pseudo manner).

  By the way, a backward support system that displays an image of the rear of the vehicle and supports the backward movement of the vehicle has been put into practical use. FIG. 4 is a block diagram schematically showing an example of a conventional backward support system. In the figure, reference numeral 31 denotes a display, and the display 31 includes a microcomputer 32 and a display unit 33.

  Video data obtained by the camera 36 that captures the rear of the vehicle is input to the microcomputer 32 via the video input terminal 34. A signal indicating the lever position of the selector lever 37 is input to the microcomputer 32 via the lever position input terminal 35. Examples of the lever position of the selector lever 37 include travel (drive D), parking (parking P), and reverse (reverse R).

  When the microcomputer 32 determines that the lever position of the selector lever 37 is in reverse, the microcomputer 32 outputs the video data obtained by the camera 36 to the display unit 33, and displays the video image of the rear of the vehicle on the display unit 33. It is supposed to be displayed. That is, when the vehicle is moved backward, an image showing the rear of the vehicle is displayed on the display unit 33.

  An example of the display device is a display 31 that constitutes the backward support system. However, in order to display an image on the display unit 33 of the display 31, the lever position of the selector lever 37 (shift lever in the case of a manual shift vehicle) needs to be in the reverse direction.

Therefore, when the second video data is output to the video input terminal in the communication device (2), a pseudo signal indicating that the selector lever or the shift lever is in the retracted position is transmitted to the display device. A transmission means is provided.
For example, a pseudo signal indicating that the lever position of the selector lever 37 is retracted is output to the lever position input terminal 35 of the display 31. Thereby, information obtained by inter-vehicle communication can be displayed on the display unit 33 of the display 31.

  Embodiments of a communication apparatus according to the present invention will be described below with reference to the drawings. FIG. 5 is a block diagram schematically showing a main part of the navigation system configured to include the communication device according to the embodiment (1). Here, the same components as those in the navigation system shown in FIG. 2 are denoted by the same reference numerals, and the description thereof is omitted.

  In the figure, reference numeral 41 denotes a vehicle-to-vehicle communication device (corresponding to the communication device according to the present invention). And a remote control sensor 43b for inputting a signal from. The microcomputer 42 is connected to the transmission / reception unit 3 so that data received by the antenna 4 can be acquired via the transmission / reception unit 3 or appropriate data can be transmitted from the antenna 4 via the transmission / reception unit 3. It has become.

  The inter-vehicle communication device 41 is provided with an input terminal 44 for inputting a signal from the VICS unit 17 and an output terminal 45 for outputting a signal to the outside. The output terminal 45 is connected to an input terminal 13 provided in the navigation device 11, and a signal output from the inter-vehicle communication device 41 is input by the navigation device 11.

  The microcomputer 42 is connected to a GPS receiver 8, a vehicle speed sensor 9, and the like, and the microcomputer 42 can acquire position data, vehicle speed data, and the like of the host vehicle. Further, the microcomputer 42 analyzes the acquired position data and vehicle speed data of the own vehicle, and transmits necessary data from the antenna 4 to the other vehicle (vehicle-to-vehicle communication device 41 installed) via the transmission / reception unit 3. It has become.

  FIG. 6 is a block diagram for explaining the microcomputer 42 of the inter-vehicle communication device 41 in more detail. The microcomputer 42 includes a management unit 51, a capture unit 52 for capturing a signal from the VICS unit 17, a conversion unit (encoding unit) 53 that converts data obtained as a result of the inter-vehicle communication into a VICS data format, It includes a storage unit 54 that stores the data captured by the storage unit 52 and the data converted by the conversion unit 53.

  An output terminal 45 is connected to the management unit 51, and the management unit 51 receives data D1 (that is, data provided by VICS) acquired by the acquisition unit 52 or data D2 (converted by the conversion unit 53). In other words, data obtained as a result of the inter-vehicle communication is output from the output terminal 45.

  The processing operation [1-1] performed by the microcomputer 42 of the inter-vehicle communication device 41 will be described based on the flowchart shown in FIG. This processing operation [1-1] is an operation performed when data transmitted from the transmission / reception unit 3 (that is, data obtained by inter-vehicle communication) is received.

  First, data transmitted from the transmission / reception unit 3 is analyzed, and information to be provided to the user is configured (step S1). Next, the configured information is converted into VICS data by the converter 53 (step S2). That is, the data obtained as a result of the inter-vehicle communication is converted into VICS data.

  FIG. 8 is a diagram schematically showing an example of the VICS data format, which includes data indicating the type of information and data relating to a screen represented by characters / graphics. FIG. 8A shows a case where the screen is composed of one page, and FIG. 8B shows a case where the screen is composed of two or more pages.

  Next, it is determined whether data D1 (data provided by VICS) is being output to the navigation device 11 via the output terminal 45 (step S3). If it is determined that the data D1 is not being output, it is next determined whether or not the information indicated by the data D2 converted by the conversion unit 53 is composed of one page of the screen (step S4). If it is determined that the information indicated by the data D2 is composed of one page of the screen, then the data D2 is output to the navigation device 11 via the output terminal 45 (step S5), and the processing operation [1-1] is performed. Exit.

  Since the navigation device 11 supports VICS, the data D2 converted into VICS data can be analyzed and information included in the data D2 can be displayed on the display unit 7. That is, the information included in the data obtained as a result of the inter-vehicle communication can be displayed on the display unit 7.

  On the other hand, if it is determined in step S4 that the information indicated by the data D2 is composed of not less than one page of the screen but two or more pages of the screen, the first page of data is output to the navigation device 11 (step S6). Next, based on the signal transmitted from the remote controller 43a, it is determined whether or not the user has requested display of the next page (step S7).

  If it is determined that the display of the next page is requested, the data of the next page is output to the navigation device 11 (step S8), and then it is determined whether the output of data for all pages is completed (step S8). S9). If it is determined that the output of data for all pages has been completed, the processing operation [1-1] is terminated. On the other hand, if it is determined that data to be output remains, the process returns to step S7.

  If it is determined in step S3 that the data D1 (data provided by VICS) is being output to the navigation device 11 via the output terminal 45, the type of information indicated by the data D1 being output, and the data D2 Based on the type of information indicated by (data obtained as a result of inter-vehicle communication), the output timing of the data D2 is determined (step S10).

An example of a criterion for determining the output timing of the data D2 will be described.
1. When the information indicated by the data D2 is related to safety (for example, in the case of a vehicle approach notification)
a. When the information indicated by the data D1 is an emergency program, the output of the data D2 is started immediately after the output of the data D1 is completed.
b. When the information indicated by the data D1 is not an emergency program The output of the data D2 is started immediately regardless of the output status of the data D1.
2. When the information indicated by the data D2 is not related to safety After the output of the data D1 is completed, a predetermined time (for example, a time required for the user to read the information indicated by the data D1 for 3 seconds) has elapsed. Start output.

  Note that here, the case where the output timing of the data D2 is determined based on the information indicated by the data D1 and the information indicated by the data D2 has been described. However, in another embodiment, the information indicated by the data D1 or The output timing of the data D2 may be determined based on any one of the information indicated by the data D2.

  Based on the result of determining the output timing of the data D2, it is determined whether or not it is necessary to wait for the output of the data D2 (step S11). If it is determined that there is no need to wait for the output of the data D2, the process proceeds to step S4, and a process of outputting the data D2 to the navigation device 11 is performed.

  On the other hand, if it is determined that it is necessary to wait for the output of the data D2, the data D2 is stored in the storage unit 54 (step S12). Next, it is determined whether or not the condition for outputting the data D2 is satisfied (step S13). If it is determined that the condition for outputting the data D2 is satisfied, the data D2 is read from the storage unit 5 (step S14). Then, the process proceeds to step S4.

  The processing operation [1-2] performed by the microcomputer 42 of the inter-vehicle communication device 41 will be described based on the flowchart shown in FIG. This processing operation [1-2] is an operation performed when data D1 transmitted from the VICS unit 17 (that is, data provided by VICS) is received.

  First, it is determined whether data D2 (data obtained as a result of inter-vehicle communication) is being output to the navigation device 11 via the output terminal 45 (step S21). If it is determined that the data D2 is not being output, then the data D1 is output to the navigation device 11 via the output terminal 45 (step S22), and the processing operation [1-2] is terminated. Since the navigation device 11 supports VICS, the data D1 can be analyzed and information included in the data D1 can be displayed on the display unit 7.

  On the other hand, if it is determined in step S21 that the data D2 is being output to the navigation device 11 via the output terminal 45, the data D1 is stored in the storage unit 54 in order to wait for the output of the data D1 (step S23). .

  Next, whether or not a predetermined time (for example, a time required for the user to read the information indicated by the data D2 for 3 seconds) has elapsed since the output of the data D2 is completed, that is, the timing at which the data D1 should be output. It is judged whether or not (step S24). If it is determined that the timing to output the data D1 has been reached, the process proceeds to step S22, and the data D1 is output to the navigation device 11 via the output terminal 45.

  Here, the time when a predetermined time has elapsed after the output of the data D2 is completed is the timing at which the data D1 is to be output. However, in another embodiment, the information indicated by the data D1 and the data D2 The output timing of the data D1 may be determined based on the information indicated, the information indicated by the data D1, or the information indicated by the data D2.

  The processing operation [1-3] performed by the microcomputer 42 of the inter-vehicle communication device 41 will be described based on the flowchart shown in FIG. This processing operation [1-3] is an operation performed when the remote controller 43a is operated and a display of a menu screen for transmitting information between vehicles is requested by the user.

First, the menu screen P ₁₀ (FIG. 11) is created (step S31), and the created menu screen P ₁₀ information is converted into VICS data by the converter 53 (step S32), and then converted (menu screen P). It shows a ₁₀₎ the data D ₁₀ through the output terminal 45 outputs to the navigation apparatus 11 (step S33).

Since the navigation device 11 is compatible with VICS, the data D ₁₀ converted into VICS data can be analyzed and the menu screen P ₁₀ included in the data D ₁₀ can be displayed on the display unit 7. FIG. 11 shows an example of the menu screen P ₁₀ displayed on the display unit 7. The menu screen P ₁₀ has options “1” and “2”. In addition, the menu screen P ₁₀ other <Note> screen P _21, have a relationship of <Greeting> screen P ₂₂ and the link, the screen is hierarchical.

Next, based on the signal transmitted from the remote controller 43a, it is determined whether the user has selected one of the options “1” or “2” (step S34). When it is judged that the user has selected the option "1", then create a <Remarks> screen P ₂₁ (step S35), the VICS data information <Remarks> screen P ₂₁ created by the conversion unit 53 converted (step S36), and then outputs the data D ₂₁ that indicates the converted <Remarks> screen P ₂₁ to the navigation apparatus 11 via an output terminal 45 (step S37). As a result, the <Request> screen P ₂₁ is displayed on the display unit 7 of the navigation device 11.

  Next, based on the signal transmitted from the remote controller 43a, it is determined whether the user has selected any of the options “1” to “3” (step S38). If it is determined that the user has selected the option “1”, information including a message “I will interrupt” is transmitted from the antenna 4 to the outside via the transceiver 3 (step S39).

  If it is determined that the user has selected the option “2”, information including a message such as “turn right” is transmitted from the antenna 4 to the outside via the transmission / reception unit 3 (step S40), and the user selects the option “3”. If it is determined that is selected, information including a message “turn left” is transmitted from the antenna 4 to the outside via the transmission / reception unit 3 (step S41).

On the other hand, in step S34, it is judged that the user selects the option "2", then <greeting> to create a screen P ₂₂ (step S42), was prepared <greeting> screen information conversion unit P ₂₂ converted into VICS data 53 (step S43), and then outputs the data D ₂₂ that indicates the converted <greeting> screen P ₂₂ to the navigation apparatus 11 via an output terminal 45 (step S44). As a result, the <greeting> screen P ₂₂ is displayed on the display unit 7 of the navigation device 11.

  Next, based on the signal transmitted from the remote controller 43a, it is determined whether the user has selected any of the options “1” to “4” (step S45). If it is determined that the user has selected the option “1”, information including a message such as “Good morning” is transmitted from the antenna 4 to the outside via the transmission / reception unit 3 (step S46).

  When it is judged that the user selects the option "2", and transmitted from the antenna 4 to an external information containing a message such as "Hello" via the transceiver 3 (step S47), the user selects the option "3" If it is determined that the information including the message “Good evening” is transmitted from the antenna 4 to the outside via the transmission / reception unit 3 (step S48), and if it is determined that the user selects the option “4”, “Thank you” Is transmitted from the antenna 4 to the outside via the transmission / reception unit 3 (step S49).

According to the communication device (vehicle-to-vehicle communication device 41) according to the embodiment (1), the data obtained as a result of the vehicle-to-vehicle communication is converted into the VICS data format, and the converted data is output to the navigation device 11. .
Therefore, even if the navigation device 11 is not compatible with presentation of information obtained by inter-vehicle communication, the navigation device 11 can present information obtained by inter-vehicle communication as long as it is compatible with VICS. As a result, it is not necessary to replace the entire system, and it is possible to realize presentation of information obtained by inter-vehicle communication relatively easily and inexpensively.

  FIG. 12 is a block diagram schematically showing a main part of a navigation system including the communication device according to the embodiment (2). Here, the same components as those in the navigation system shown in FIG. 3 are denoted by the same reference numerals, and the description thereof is omitted.

  In the figure, reference numeral 61 denotes a vehicle-to-vehicle communication device (corresponding to the communication device according to the present invention). The vehicle-to-vehicle communication device 61 includes a microcomputer 62 having a CPU, a ROM, a RAM, etc. (not shown), a transmission / reception unit 3, It includes a receiver 63, a VICS unit 64, a modulation unit 65 for modulating a high frequency signal, and a remote control sensor 43b for inputting a signal from the remote control 43a.

  The transmission / reception unit 3 is connected to the microcomputer 62 so that data received by the antenna 4 can be acquired via the transmission / reception unit 3 or appropriate data can be transmitted from the antenna 4 via the transmission / reception unit 3. It has become. A VICS unit 64 is connected to the microcomputer 62, a signal received by the radio beacon receiving antenna 16a is input to the VICS unit 64 via the radio beacon receiver 63, and VICS information extracted from the received signal is obtained. It is input to the microcomputer 62.

  The inter-vehicle communication device 61 is provided with an input terminal 66 for inputting a signal from the radio beacon receiving antenna 16a and an output terminal 67 for outputting a signal to the outside. The output terminal 67 is connected to an input terminal 26 provided in the navigation device 21, and a signal output from the inter-vehicle communication device 61 is input by the navigation device 21.

  The microcomputer 62 is connected to a GPS receiver 8, a vehicle speed sensor 9, and the like, and the microcomputer 62 can acquire the position data and vehicle speed data of the host vehicle. In addition, the microcomputer 62 analyzes the acquired position data and vehicle speed data of the own vehicle, and transmits necessary data from the antenna 4 to the other vehicle (the inter-vehicle communication device 61 installed) via the transmission / reception unit 3. It has become.

  FIG. 13 is a block diagram for explaining the microcomputer 62 of the inter-vehicle communication device 61 in more detail. The microcomputer 62 includes a management unit 71, a capture unit 72 for capturing a signal from the VICS unit 64, a conversion unit (encoding unit) 73 for converting data obtained as a result of the inter-vehicle communication into a VICS data format, The storage unit 74 is configured to store the data captured by the capture unit 72 and the data converted by the conversion unit 73.

  A modulation unit 65 is connected to the management unit 71, and the management unit 71 receives data D <b> 1 (that is, data provided by VICS) acquired by the acquisition unit 72 or data D <b> 2 (converted by the conversion unit 73). In other words, data obtained as a result of the inter-vehicle communication is output to the modulation unit 65. Thereby, the data D1 and the data D2 can be received by the radio beacon receiver 16b installed in the navigation device 21 as a high frequency VICS signal captured by the radio beacon receiving antenna 16a.

  The processing operation [2-1] performed by the microcomputer 62 of the inter-vehicle communication device 61 will be described based on the flowchart shown in FIG. The processing operation [2-1] is an operation performed when data transmitted from the transmission / reception unit 3 (that is, data obtained by inter-vehicle communication) is received.

  First, data transmitted from the transmission / reception unit 3 is analyzed, and information to be provided to the user is configured (step S51). Next, the configured information is converted into VICS data by the converter 73 (step S52). That is, the data obtained as a result of the inter-vehicle communication is converted into VICS data.

  Next, it is determined whether the data D1 (data provided by VICS) is being output to the navigation device 21 via the output terminal 67 (step S53). If it is determined that the data D1 is not being output, it is next determined whether or not the information indicated by the data D2 converted by the converter 73 is composed of one screen page (step S54). If it is determined that the information indicated by the data D2 is composed of one page of the screen, then the data D2 is output from the output terminal 67 to the navigation device 21 via the modulator 65 (step S55), and the processing operation [ 2-1] is ended.

  Since the navigation device 21 is compatible with VICS, the data D2 converted into VICS data can be analyzed and information included in the data D2 can be displayed on the display unit 7. That is, the information included in the data obtained as a result of the inter-vehicle communication can be displayed on the display unit 7.

  On the other hand, if it is determined in step S54 that the information indicated by the data D2 is composed of two pages or more instead of one page of the screen, the first page of data is output to the navigation device 21 via the modulation unit 65. Next, based on the signal transmitted from the remote controller 43a, it is determined whether or not the user has requested display of the next page (step S57).

  If it is determined that the display of the next page is requested, the data of the next page is output to the navigation device 21 via the modulation unit 65 (step S58), and then the output of the data for all pages is completed. Is determined (step S59). If it is determined that the output of data for all pages has been completed, the processing operation [2-1] is terminated. On the other hand, if it is determined that there is data to be output, the process returns to step S57.

  If it is determined in step S53 that the data D1 (data provided by VICS) is being output to the navigation device 21 via the output terminal 67, the type of information indicated by the data D1 being output, and the data D2 Based on the type of information indicated by (data obtained as a result of the inter-vehicle communication), the output timing of the data D2 is determined (step S60).

  Based on the result of determining the output timing of the data D2, it is determined whether or not it is necessary to wait for the output of the data D2 (step S61). If it is determined that there is no need to wait for the output of the data D2, the process proceeds to step S54 to perform a process of outputting the data D2 to the navigation device 21.

  On the other hand, if it is determined that it is necessary to wait for the output of the data D2, the data D2 is stored in the storage unit 74 (step S62). Next, it is determined whether or not the condition for outputting the data D2 is satisfied (step S63). If it is determined that the condition for outputting the data D2 is satisfied, the data D2 is read from the storage unit 74 (step S64). Thereafter, the process proceeds to step S54.

  Next, the processing operation [2-2] performed by the microcomputer 62 of the inter-vehicle communication device 61 will be described based on the flowchart shown in FIG. This processing operation [2-2] is an operation performed when data transmitted from the transmission / reception unit 3 (that is, data obtained by inter-vehicle communication) is received.

  First, it is determined whether data D2 (data obtained as a result of inter-vehicle communication) is being output to the navigation device 21 via the output terminal 67 (step S71). If it is determined that the data D2 is not being output, then the data D1 is output from the output terminal 67 to the navigation device 21 via the modulator 65 (step S72), and the processing operation [2-2] is terminated. Since the navigation device 11 supports VICS, the data D1 can be analyzed and information included in the data D1 can be displayed on the display unit 7.

  On the other hand, if it is determined in step S71 that the data D2 is being output to the navigation device 21 via the output terminal 67, the data D1 is stored in the storage unit 74 in order to wait for the output of the data D1 (step S73). .

  Next, whether or not a predetermined time (for example, a time required for the user to read the information indicated by the data D2 for 3 seconds) has elapsed since the output of the data D2 is completed, that is, the timing at which the data D1 should be output. Is determined (step S74). If it is determined that the timing to output the data D1 has been reached, the process proceeds to step S72, where the data D1 is output from the output terminal 67 to the navigation device 21 via the modulator 65.

  Next, the processing operation [2-3] performed by the microcomputer 62 of the inter-vehicle communication device 61 will be described based on the flowchart shown in FIG. This processing operation [2-3] is an operation performed when the remote controller 43a is operated and a display of a menu screen for transmitting vehicle-to-vehicle information is requested by the user.

First, the menu screen P ₁₀ (FIG. 11) is created (step S81), and the information of the created menu screen P ₁₀ is converted into VICS data by the conversion unit 73 (step S82), and then converted (menu screen P). It shows a ₁₀₎ to output the data D ₁₀ from the output terminal 67 via the modulation unit 65 to the navigation apparatus 21 (step S83). Since the navigation device 21 supports VICS, the data D ₁₀ converted into VICS data can be analyzed and the menu screen P ₁₀ included in the data D ₁₀ can be displayed on the display unit 7.

Next, based on the signal transmitted from the remote controller 43a, it is determined whether the user has selected one of the options “1” or “2” (step S84). When it is judged that the user has selected the option "1", then create a <Remarks> screen P ₂₁ (step S85), the VICS data information <Remarks> screen P ₂₁ created by the conversion unit 73 converted (step S86), and then outputs the data D ₂₁ that indicates the converted <Remarks> screen P ₂₁ from the output terminal 67 via the modulation unit 65 to the navigation apparatus 21 (step S87). As a result, the <Request> screen P ₂₁ is displayed on the display unit 7 of the navigation device 21. Steps S88 to S91 are the same processing operations as Steps S38 to S41 of the processing operation [1-3] shown in FIG.

On the other hand, in step S84, the it is judged that the user selects the option "2", then <greeting> to create a screen P ₂₂ (step S92), was prepared <greeting> screen information conversion unit P ₂₂ 73 is converted into VICS data (step S93), and then outputs the data D ₂₂ that indicates the converted <greeting> screen P ₂₂ from the output terminal 67 via the modulation unit 65 to the navigation apparatus 21 (step S94). As a result, the <greeting> screen P ₂₂ is displayed on the display unit 7 of the navigation device 21. Steps S95 to S99 are the same as steps S45 to S49 in the processing operation [1-3] shown in FIG.

  According to the communication device (vehicle-to-vehicle communication device 62) according to the embodiment (2), the modulation unit 65 that modulates the high-frequency signal is provided, and the data D1 and D2 are output to the navigation device 21 via the modulation unit 65. The As a result, it is possible to deal with a new type of navigation device 21 incorporating the VICS unit 17 and various receivers 14b, 15b, and 16b.

  Note that, here, the case of interrupting between the radio beacon receiving antenna 16a and the VICS unit 17 has been described, but in another embodiment, between the FM multiplex receiving antenna 14a and the VICS unit 17 or optical beacon light reception. You may make it interrupt between the part 15a and the VICS unit 17. FIG.

  FIG. 17 is a block diagram schematically showing a main part of the backward support system including the communication device according to the embodiment (3). Here, the same components as those in the backward assistance system shown in FIG. 4 are denoted by the same reference numerals, and the description thereof is omitted.

  In the figure, reference numeral 81 denotes a vehicle-to-vehicle communication device (corresponding to the communication device according to the present invention). And a remote control sensor 43b for inputting a signal from. The microcomputer 82 is connected to the transmission / reception unit 3 so that data received by the antenna 4 can be acquired via the transmission / reception unit 3, or appropriate data can be transmitted from the antenna 4 via the transmission / reception unit 3. It has become.

  The inter-vehicle communication device 81 includes an input terminal 83 for inputting video data obtained by the camera 36 that captures the rear of the vehicle, an output terminal 84 for outputting video data to the outside, and a lever of the selector lever 37. An output terminal 85 for outputting a signal indicating the position and an input terminal 86 for inputting a signal indicating the lever position of the selector lever 37 are provided.

  The output terminal 84 is connected to the video input terminal 34 provided on the display 31, and the video data output from the inter-vehicle communication device 81 is input to the display 31. The output terminal 85 is connected to the lever position input terminal 35 provided on the display 31, and a signal indicating the lever position of the selector lever 37 output from the inter-vehicle communication device 81 is input to the display 31. ing.

  The microcomputer 82 is connected to a GPS receiver 8, a vehicle speed sensor 9, and the like, so that the microcomputer 82 can acquire position data, vehicle speed data, and the like of the host vehicle. In addition, the microcomputer 82 analyzes the acquired position data and vehicle speed data of the own vehicle, and transmits necessary data from the antenna 4 to the other vehicle (the inter-vehicle communication device 81 installed) via the transmission / reception unit 3. It has become.

  FIG. 18 is a block diagram for explaining the microcomputer 82 of the inter-vehicle communication device 81 in more detail. The microcomputer 82 includes a management unit 91, a capture unit 92 for capturing video data from the camera 36, and a conversion unit (encoding unit) that converts data obtained as a result of inter-vehicle communication into video data that conforms to the specifications of the display 31. ) 93 and a storage unit 94 that stores the video data captured by the capture unit 92 and the video data converted by the conversion unit 93.

  An output terminal 84 is connected to the management unit 91, and the management unit 91 converts video data Da (that is, video data obtained by the camera 36) captured by the capture unit 92 or converted by the conversion unit 93. Video data Db (that is, data obtained as a result of inter-vehicle communication) is output from the output terminal 84.

  In addition, an output terminal 85 is connected to the management unit 91, and a signal indicating the lever position of the selector lever 37 is output from the output terminal 85. Examples of the lever position of the selector lever 37 include travel (drive D), parking (parking P), and reverse (reverse R). In addition, the management unit 91 outputs a pseudo signal indicating that the lever position is in the backward movement, even if the lever position of the selector lever 37 is not in the backward movement (reverse R), if necessary. Yes.

  The processing operation [3-1] performed by the microcomputer 82 of the inter-vehicle communication device 81 will be described based on the flowchart shown in FIG. This processing operation [3-1] is an operation performed when data transmitted from the transmission / reception unit 3 (that is, data obtained by inter-vehicle communication) is received.

  First, data transmitted from the transmission / reception unit 3 is analyzed, and information to be provided to the user is configured (step S101). Next, the configured information is converted into video data conforming to the specifications of the display 31 by the conversion unit 93 (step S102). That is, the data obtained as a result of the inter-vehicle communication is converted into data having the same format as the video data obtained by the camera 36.

  Next, it is determined whether or not the lever position of the selector lever 37 is in reverse (reverse R) (step S103). If it is determined that the lever position of the selector lever 37 is not in reverse, the lever position is retracted. Is output to the display 31 through the output terminal 85 (step S104).

  Next, it is determined whether or not the information indicated by the video data Db converted by the conversion unit 93 is composed of one page of the screen (step S105). If it is determined that the information indicated by the video data Db is composed of one page of the screen, then the video data Db is output to the display 31 via the output terminal 84 (step S106). A signal indicating the lever position is output to the display 31 via the output terminal 85 (step S107), and the processing operation [3-1] is terminated.

  Since the video data Db conforms to the specifications of the display 31, the display 31 can display the video indicated by the video data Db on the display unit 33. That is, the information included in the data obtained as a result of the inter-vehicle communication can be displayed on the display unit 33.

  On the other hand, if it is determined in step S105 that the information indicated by the video data Db is composed of not less than one page of the screen but two or more pages of the screen, the first page of data is output to the display 31 (step S108). Next, based on the signal transmitted from the remote controller 43a, it is determined whether or not the user has requested display of the next page (step S109).

  If it is determined that the display of the next page is requested, the data of the next page is output to the display 31 (step S110), and then it is determined whether the output of data for all pages is completed (step S111). ). If it is determined that the output of data for all pages has been completed, a signal indicating the normal lever position of the selector lever 37 is output to the display 31 via the output terminal 85 (step S107), and the processing operation [3-1 ] Is finished. On the other hand, if it is determined that there is data to be output, the process returns to step S109.

  In step S103, if it is determined that the lever position of the selector lever 37 is in reverse (that is, when the vehicle is reverse), an image of the rear of the vehicle photographed by the camera 36 is displayed on the display unit 33. Since it should be, the video data Db is stored in the storage unit 94 and waits for output (step S112).

  Next, it is determined whether or not the lever position of the selector lever 37 is in the reverse direction (step S113), and the lever position of the selector lever 37 is not in the reverse direction (that is, whether the selector lever 37 has been operated and has moved backward). If it is determined that the video data Db has been moved to another position, the video data Db is read from the storage unit 94 (step S114), and then the process proceeds to step S104.

  Next, the processing operation [3-2] performed by the microcomputer 82 of the inter-vehicle communication device 81 will be described based on the flowchart shown in FIG. This processing operation [3-2] is an operation performed every predetermined period.

  First, it is determined whether or not a pseudo signal indicating that the lever position of the selector lever 37 is moved backward is being output to the display 31 via the output terminal 85 (step S121). If it is determined that the pseudo signal is not being output, a signal indicating the normal lever position of the selector lever 37 is output to the display 31 via the output terminal 85 (step S122).

Next, it is determined whether or not the lever position of the selector lever 37 is in the backward direction (step S123). If it is determined that the lever position is in the reverse direction, the video behind the vehicle taken by the camera 36 should be displayed on the display unit 33, so that the video data Da obtained by the camera 36 is output via the output terminal 84. Is output to the display 31 (step S124). The output of the video data Da is continued until the lever position is switched.
On the other hand, if it is determined that the lever position is not in the reverse direction, the processing operation [3-2] is terminated as it is.

  If it is determined in step S121 that the pseudo signal is being output (that is, the information included in the data obtained as a result of the inter-vehicle communication is displayed on the display unit 33), the lever position of the selector lever 37 is determined. It is determined whether or not the vehicle is in reverse (step S125).

When it is determined that the lever position of the selector lever 37 is in reverse (that is, when the vehicle is reverse), the output of the video data Db is cut off and the video data Da obtained by the camera 36 is output. (Step S126), and the video data Da is output to the display 31 via the output terminal 84 (step S124).
On the other hand, if it is determined that the lever position is not in the reverse direction, the processing operation [3-2] is terminated as it is.

  Next, the processing operation [3-3] performed by the microcomputer 82 of the inter-vehicle communication device 81 will be described based on the flowchart shown in FIG. This processing operation [3-3] is an operation performed when the remote controller 43a is operated and a display of a menu screen for transmitting vehicle-to-vehicle information is requested by the user.

First, the menu screen P ₁₀ (FIG. 11) is created (step S131), and the information on the created menu screen P ₁₀ is converted into data suitable for the specifications of the display 31 by the conversion unit 93 (step S132). Next, it is determined whether or not the lever position of the selector lever 37 is in reverse (reverse R) (step S133). If it is determined that the lever position of the selector lever 37 is not in reverse, the lever position is retracted. Is output to the display 31 through the output terminal 85 (step S134).

Next, the converted video data Db ₁₀ (showing the menu screen P ₁₀ ) is output to the display 31 via the output terminal 84 (step S 135). Since the video data Db ₁₀ conforms to the specifications of the display 31, the display 31 can display the video indicated by the video data Db _{10 on} the display unit 33.

Next, based on the signal transmitted from the remote controller 43a, it is determined whether the user has selected one of the options “1” and “2” (step S136). When it is judged that the user has selected the option "1", then, <ask> to create a screen P ₂₁ (step S137), the specifications of the display 31 <Note> information on the screen P _21, which was created by the conversion unit 93 is converted into data suitable for (step S138), then the video data Db ₂₁ indicating the converted <Remarks> screen P ₂₁ through the output terminal 84 outputs to the display 31 (step S139). As a result, the <request> screen P ₂₁ is displayed on the display unit 33 of the display 31. Steps S140 to S141 are the same as steps S38 to S41 of the processing operation [1-3] shown in FIG.

On the other hand, in step S136, when it is judged that the user selects the option "2", then <greeting> to create a screen P ₂₂ (step S144), was prepared <greeting> screen information conversion unit P ₂₂ 93 is converted into data suitable for the specification of the display 31 (step S145), and then outputs the video data Db ₂₂ indicating the converted <greeting> screen P ₂₂ to the display 31 via the output terminal 84 (step S146) . As a result, the <greeting> screen P ₂₂ is displayed on the display unit 33 of the display 31. Steps S147 to S151 are the same as steps S45 to S49 of the processing operation [1-3] shown in FIG.

If it is determined in step S133 that the lever position of the selector lever 37 is in reverse (that is, when the vehicle is reverse), an image of the rear of the vehicle photographed by the camera 36 is displayed on the display unit 33. Since it should be, the video data Db ₁₀ is stored in the storage unit 94 and the output is awaited (step S152).

Next, it is determined whether or not the lever position of the selector lever 37 has entered the reverse direction (step S153), and the lever position of the selector lever 37 has not entered the reverse direction (that is, whether the selector lever 37 has been operated and has moved backward). if it is determined that it has moved to another location), from the storage unit 94 reads the video data Db ₁₀ (step S154), then the process proceeds to step S134.

According to the communication device (vehicle-to-vehicle communication device 81) according to the embodiment (3), the data obtained as a result of the vehicle-to-vehicle communication is converted into video data that conforms to the specifications of the display 31, and the converted data is displayed on the display 31. Are output to the video input terminal 34.
Therefore, even if the display 31 does not correspond to the presentation of information obtained by inter-vehicle communication, information obtained by inter-vehicle communication can be presented on the display 31. As a result, it is not necessary to replace the entire system, and it is possible to realize presentation of information obtained by inter-vehicle communication relatively easily and inexpensively. Here, the inter-vehicle communication has been mainly described, but the present invention may be applied to communication between the own vehicle and the center (base station).

It is the block diagram which showed schematically an example of the conventional inter-vehicle communication system. It is the block diagram which showed roughly an example of the navigation system corresponding to the conventional VICS. It is the block diagram which showed roughly an example of the navigation system corresponding to the conventional VICS. It is the block diagram which showed an example of the conventional backward assistance system roughly. It is the block diagram which showed roughly the principal part of the navigation system comprised including the communication apparatus which concerns on embodiment (1) of this invention. It is a block diagram for demonstrating in more detail the microcomputer of a vehicle-to-vehicle communication apparatus. It is the flowchart which showed the processing operation which the microcomputer of a vehicle-to-vehicle communication apparatus performs. It is the figure which showed an example of the data format of VICS typically. It is the flowchart which showed the processing operation which the microcomputer of a vehicle-to-vehicle communication apparatus performs. It is the flowchart which showed the processing operation which the microcomputer of a vehicle-to-vehicle communication apparatus performs. It is the figure which showed an example of the screen displayed on a display part. It is the block diagram which showed roughly the principal part of the navigation system comprised including the communication apparatus which concerns on embodiment (2). It is a block diagram for demonstrating in more detail the microcomputer of a vehicle-to-vehicle communication apparatus. It is the flowchart which showed the processing operation which the microcomputer of a vehicle-to-vehicle communication apparatus performs. It is the flowchart which showed the processing operation which the microcomputer of a vehicle-to-vehicle communication apparatus performs. It is the flowchart which showed the processing operation which the microcomputer of a vehicle-to-vehicle communication apparatus performs. It is the block diagram which showed roughly the principal part of the reverse assistance system comprised including the communication apparatus which concerns on embodiment (3). It is a block diagram for demonstrating in more detail the microcomputer of a vehicle-to-vehicle communication apparatus. It is the flowchart which showed the processing operation which the microcomputer of a vehicle-to-vehicle communication apparatus performs. It is the flowchart which showed the processing operation which the microcomputer of a vehicle-to-vehicle communication apparatus performs. It is the flowchart which showed the processing operation which the microcomputer of a vehicle-to-vehicle communication apparatus performs.

Explanation of symbols

41, 61, 81 Inter-vehicle communication device 42, 62, 82 Microcomputer 44, 66, 83, 86 Input terminal 45, 67, 84, 85 Output terminal 51, 71, 91 Management part 52, 72, 92 Acquisition part 53, 73 93 Conversion unit 54, 74, 94 Storage unit 65 Modulation unit

Claims (8)

Capture means for capturing data provided by the traffic information providing system;
A transmission / reception means for inter-vehicle communication;
Conversion means for converting the data obtained as a result of the inter-vehicle communication into the data format of the traffic information providing system;
An output unit that selects any one of the first data captured by the capture unit and the second data converted by the conversion unit and outputs the selected data to an information presentation device corresponding to the traffic information providing system; A communication device. Comprising a modulation means for modulating a high-frequency signal;
2. The communication apparatus according to claim 1, wherein the output means outputs the first data or the second data to the information presentation apparatus via the modulation means. Storage means for storing the first data and the second data;
The storage means is configured to be able to wait for output of the first data and the second data to the information presentation device,
3. The communication apparatus according to claim 1, wherein the output unit reads out data waiting for output from the storage unit and outputs the data to the information presentation device. Based on the type of information indicated by the first data and the type of information indicated by the second data, or the type of information indicated by the first data or the type of information indicated by the second data, Determining means for determining the output timing of the second data to the information presentation device;
4. The communication apparatus according to claim 3, wherein the output means outputs the first data or the second data to the information presentation apparatus based on the output timing. With operation input means,
If the data obtained as a result of inter-vehicle communication has multiple screen information linked,
The output means outputs the second data to the information presentation device by one screen information;
3. The apparatus according to claim 1, wherein the second data of another linked screen information is output to the information presenting device based on a screen switching request via the operation input means. Communication equipment. Capture means for capturing video data obtained by the imaging means;
A transmission / reception means for inter-vehicle communication;
Conversion means for converting data obtained as a result of inter-vehicle communication into video data that conforms to the specifications of the display device;
Output means for selecting any one of the first video data captured by the capture means and the second video data converted by the conversion means and outputting the selected data to the video input terminal of the display device. A communication device. When outputting the second video data to the video input terminal,
The communication apparatus according to claim 6, further comprising: a transmission unit that transmits a pseudo signal indicating that the selector lever or the shift lever is in the retracted position to the display device.   When the selector lever or the shift lever is in a retracted position, the first video data is given priority over the second video data and is output to the video input terminal. Item 8. The communication device according to Item 7.

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