JPH1137779A - Information presentation apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a information presentation apparatus that can transfer acquire information between driver's own vehicle and another vehicle and that can guide a road accurately. SOLUTION: When present-position information and advance-direction information which are acquired by driver's own vehicle as well as present-position information and advance-direction information which are received from another vehicle agree with a request-to-send timing rule, which is stored on a timing-rule storage device 9, a request-to-send signal is transmitted to the other vehicle, and the transmission of image data and running-state information is requested. When the image data and the running-state information are received from the other vehicle, they are stored on an information storage device 11, and the image data and the running-state information, which are stored are presented to an image presentation device.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an information presenting apparatus, and more particularly to an information presenting apparatus which transmits images taken by an on-vehicle camera to each other's vehicles by using communication with the outside, thereby providing useful information when a plurality of vehicles are traveling. The present invention relates to an information presenting device that indicates

[0002]

2. Description of the Related Art Conventionally, as an information presenting apparatus, Japanese Patent Application Laid-Open No. Sho 62-62, discloses a system in which a traveling field of view is photographed when passing through an intersection and then the photographed image is presented when passing through the intersection.
Japanese Patent Application Publication No. 138719 discloses a "vehicle route guidance device".

In this system, a microcomputer calculates the current position of a vehicle from a bearing detected by a bearing detecting device and a travel distance based on a vehicle speed detected by a vehicle speed sensor. Then, based on the current position of the vehicle and the intersection information stored in the road network storage device in advance, it is determined whether or not the vehicle has arrived at the intersection, and whether or not the arrived intersection is an intersection that has already passed. As a result of the determination, if the arrived intersection is not a passing intersection, the image of the traveling field of view taken by the magnetic camera near the intersection is stored in the road network storage device together with the approach direction data to the intersection. On the other hand, as a result of the determination, when the arrived intersection is a passing intersection, during the return travel, the video or intersection mark of the traveling view near the intersection stored in the road network storage device is based on the approach direction data. It is presented to the presentation device together with the approach direction. Thereafter, each time the vehicle arrives at an intersection, it is determined whether or not the intersection has already passed, and storage or reproduction is repeated.

As described above, since the current position of the vehicle is calculated, and the intersection information and the image of the traveling field of view taken near the intersection where the vehicle has passed once are stored together with the approach direction data, the vehicle can be viewed from any direction. However, when the vehicle arrives at the passing intersection, the traveling view image or the intersection mark near the intersection can be presented together with the approach direction based on the approach direction data. Also, even if the vehicle passes through a different traveling route from the outbound route, route guidance can be reliably performed.
There is an advantage that route guidance can be performed without any problem even when the vehicle turns.

[0005]

However, in the conventional information presenting apparatus, the method of transmitting the acquired video to another vehicle and utilizing the acquired video is not considered. Therefore, only the video acquired by the own vehicle is presented. Therefore, the amount of information that can be presented was small, and accurate road guidance could not be provided.

[0006] The present invention has been made in view of the above,
It is an object of the present invention to provide an information presentation device capable of transmitting and receiving information obtained with another vehicle and providing accurate road guidance.

[0007]

According to the first aspect of the present invention,
In order to solve the above-mentioned problems, an information presenting device on a first vehicle side includes a position / direction information transmitting unit that transmits current position information and traveling direction information to a second vehicle, and a transmission request signal from another vehicle. Information transmission means for transmitting, when received, the acquired and stored traveling state information to the second vehicle,
The second vehicle-side information presentation device acquires current position information indicating a current position of the second vehicle, and information acquisition means for acquiring traveling direction information indicating a traveling direction of the second vehicle,
Timing rule storage means for storing a transmission request timing rule indicating a timing of transmitting a transmission request signal to the first vehicle; current position information and traveling direction information of the second vehicle; and current position information and traveling of the first vehicle. When the direction information matches the transmission request timing rule, transmission request means for transmitting a transmission request signal to the first vehicle, driving condition information obtained by the second vehicle and driving received from the first vehicle. The gist of the present invention is to include an information storage unit that stores the situation information together with the current position information, and a presentation unit that presents the current position information and the traveling state information.

According to a second aspect of the present invention, in order to solve the above-mentioned problem, the information presenting device on the first vehicle side transmits position and direction information for transmitting current position information and traveling direction information to the second vehicle. Means for transmitting video signal and travel status information obtained and stored when a transmission request signal is received from the second vehicle, and an information presentation device for the second vehicle. Transmits a transmission request signal to the first vehicle, and information acquisition means for acquiring current position information indicating the current position of the second vehicle and also obtaining traveling direction information indicating the traveling direction of the second vehicle. Timing rule storing means for storing a transmission request timing rule indicating a timing, wherein the current position information and traveling direction information of the second vehicle and the current position information and traveling direction information of the first vehicle match the transmission request timing rule. Place Transmission request means for transmitting a transmission request signal to the first vehicle, information for storing the video data and travel status information acquired by the second vehicle, and the video data and travel status information received from the first vehicle. The gist of the present invention is to include a storage unit and a presentation unit that presents video data and traveling state information.

According to a third aspect of the present invention, in order to solve the above-mentioned problem, the information storage means includes the traveling state information acquired by the second vehicle or the traveling state information received from the first vehicle together with the stored traveling state information. The gist is that transmission source information indicating the status information is stored, and if the traveling status information is received from the first vehicle, the traveling status information is deleted after being presented to the video presenting means. .

According to a fourth aspect of the present invention, in order to solve the above-mentioned problem, the information storage means includes, in addition to the stored video data and the traveling status information, the video data and the traveling status information acquired by the second vehicle. Save the image data received from the vehicle and the transmission source information indicating whether the traveling status information, if the video data and the traveling status information received from the first vehicle, after presenting to the video presenting means, The gist is to delete the video data and the driving situation information.

According to a fifth aspect of the present invention, in order to solve the above-mentioned problem, the timing rule storage means includes a first requesting vehicle that precedes a second vehicle as a transmission request timing rule on the same road as a second vehicle. The gist is to save information indicating that this is the case.

According to a sixth aspect of the present invention, in order to solve the above-mentioned problem, the timing rule storage means includes, as a transmission request timing rule, a video / situation transmission request timing rule for requesting transmission of video data and traveling status information. And the situation transmission request timing rule for requesting transmission of the traveling situation information are separately stored, and the video / situation transmission request timing rule includes the first vehicle ahead of the second vehicle on the same road as the second vehicle. The information indicating that the vehicle is present is stored, and the situation transmission request timing rule includes a case where the first vehicle is present after the vehicle has traveled on the same road as the second vehicle, or The gist is to save information indicating that the first vehicle is present on a different road.

According to a seventh aspect of the present invention, in order to solve the above-mentioned problem, the timing rule storage means includes, as a transmission request timing rule, a video / situation transmission request timing rule for requesting transmission of video data and traveling status information. And a video transmission request timing rule for requesting transmission of video data are separately stored, and the video / situation transmission request timing rule precedes on the same road as the second vehicle, and Information indicating that the vehicle has passed the current position within a predetermined time is stored, and the video transmission request timing rule includes:
The gist of the present invention is to store information indicating that there is a first vehicle that has preceded the same road as the second vehicle and passed the current position of the second vehicle outside a predetermined time period. .

[0014]

According to the first aspect of the present invention, when the current position information and the traveling direction information are received from the first vehicle, each information is compared with the transmission request timing rule.
If they match, a transmission request signal is transmitted to the first vehicle to request transmission of traveling state information. When the traveling status information is received from the first vehicle, by presenting the received current position information and the traveling status information to the presentation means,
The acquired information can be exchanged with the first vehicle, and
It can provide accurate road guidance.

According to the present invention, when the current position information and the traveling direction information are received from the first vehicle, each information is compared with the transmission request timing rule. If they match, a transmission request signal is transmitted to the first vehicle, and a transmission request for the video data and the traveling state information is made. When receiving the video data and the driving condition information from the first vehicle, the received video data and the driving condition information are presented to the presentation means, so that the acquired information can be exchanged with the first vehicle, and And accurate road guidance can be provided.

According to the third aspect of the present invention, if the traveling state information is received from the first vehicle, the traveling state information is deleted after being presented to the video presenting means. Even if the capacity of the information storage means is small, the first
Information can be exchanged with other vehicles, and accurate road guidance can be provided.

According to the fourth aspect of the present invention, if the video data and the traveling status information are received from the first vehicle, the video data and the traveling status information are presented to the video presenting means. , The acquired information can be exchanged with the first vehicle and accurate road guidance can be performed even when the capacity of the information storage means is small.

According to the present invention, the transmission request signal is transmitted when the first vehicle is ahead of the second vehicle on the same road, thereby reducing the communication amount. Meanwhile, it is possible to exchange the acquired information with the first vehicle and to provide accurate road guidance.

According to the present invention, when the first vehicle is present ahead of the same road as the second vehicle, the transmission request of the video data and the traveling state information is made. ,
If the first vehicle follows the same road as the second vehicle and the first vehicle exists, or if the first vehicle exists on a different road from the second vehicle, transmission of the traveling state information is performed. By making the request, the acquired information can be exchanged with the first vehicle while the communication volume is reduced, and accurate road guidance can be performed.

According to the seventh aspect of the present invention, when the first vehicle that precedes the same road as the second vehicle and has passed the current position of the second vehicle within a predetermined time is present. A first vehicle that makes a transmission request of video data and travel status information, precedes on the same road as the second vehicle, and passes the current position of the second vehicle outside a predetermined time. In this case, by requesting the transmission of the video data, it is possible to exchange the acquired information with the first vehicle and to provide accurate road guidance while reducing the communication amount.

[0021]

Embodiments of the present invention will be described below with reference to the drawings.

(First Embodiment) FIG. 1 is a diagram showing a system configuration of an information presenting apparatus 1 according to a first embodiment of the present invention.

The photographing device 3 includes, for example, a CCD (Charge-Co
upled Device) A camera or a digital camera is used, and it is mounted on a vehicle to capture the driving field of view. The current position measuring device 5 includes:
For example, a GPS (Global Positioning System) receiving device is used to measure the current position of a second vehicle (hereinafter, referred to as own vehicle).

The map information storage device 7 includes, for example, a CD-R
OM (Compact Disk as Read-Only Memory) and CD-RO
An M-reading device is used to store map information including latitude / longitude information of intersections, junctions, and junctions, and road type information for performing road types such as general roads, expressways, and motorways. . The timing rule storage device 9 includes:
For example, a ROM (Read-Only Memory) is used, and a rule for timing when recording is started (hereinafter referred to as a recording timing rule) and a rule for timing when a transmission request is issued to a first vehicle (hereinafter referred to as another vehicle) (hereinafter referred to as a rule). , Transmission request timing rule) is converted into a shooting start distance and stored in advance.

For example, a hard disk is used as the information storage device 11, and the information storage device 11 stores the image data of the traveling field of view by adding position information and traveling state information. The traveling state information includes traveling direction information indicating the traveling direction of the vehicle, speed limit information indicating the road speed limit, traveling speed information indicating the traveling speed of the vehicle, average speed information indicating the average speed of the vehicle, start / stop. Start / stop information indicating the frequency of the road, road condition information indicating the state of the road at the traveling point such as the state of the road, the weather, the presence or absence of construction, and the like.

In the embodiment of the present invention, the traveling status information acquired by the own vehicle (second vehicle) and the traveling status information received from another vehicle (first vehicle) are used as the current position information. Is stored in the information storage device 11 together with the other vehicle (first vehicle) on the side that transmits the traveling state information and the own vehicle (second vehicle) on the side that receives the traveling state information. I do.

As the communication device 13, for example, a mobile phone is used, and information such as position information and video data is transmitted and received via a center computer or the like provided on the ground, and video data and travel data obtained by another vehicle are transmitted. A transmission request signal for requesting transmission of status information is transmitted. Video presentation device 15
For example, a liquid crystal monitor is used to present the stored video data and running state information.

The arithmetic unit 25 is, for example, a CPU (Central P
rocessing Unit), ROM, RAM (Random-Access Mem)
ory), a microcomputer having a timer or the like is used, and constitutes an information acquisition unit 17, a traveling state determination unit 19, a stored information search unit 21, a transmission / reception processing unit 23, and the like.

More specifically, the information acquiring unit 17 uses the current position information output from the current position measuring device 5 and the map information corresponding to the current position information to determine the road on which the vehicle is currently traveling. A process for acquiring type information and traveling status information is performed. In addition, the traveling state determination unit 19 compares the recording timing rule or the transmission request timing rule with the current position information, the traveling direction information, and the like, and determines whether it is time to start the recording or transmission request.

The stored information search unit 21 searches for video data corresponding to current position information and traveling direction information of the vehicle.
The transmission / reception processing unit 23 performs transmission / reception processing with another vehicle.

The recording timing rules to be stored in the timing rule storage device 9 are set so that, for example, there is a margin of about 10 seconds before an intersection, a branch, or a junction. On a general road, if the speed is less than 30 km / h, shooting is started from 80 m before, and if it is 30 km / h or more, shooting is started 150 m before. Also, on highways or motorways, 100m at the low speed part just before the tollgate
Start shooting from the front. Further, on an expressway or a motorway, if the speed is less than 80 km / h, the shooting is started 220 m before, and if the speed is 80 km / h or more, the shooting is started 300 m before. In any case, the recording is stopped after passing through an intersection, a branch, and a junction.

The transmission request timing rule is as follows:
For example, considering the margin of communication time, so that playback can be performed at the same timing as the recording timing rule,
It is determined that there is a margin of about 30 seconds in front of the intersection, branch, and junction. When another vehicle is running ahead of the same road as the host vehicle, the speed limit is 30 km / h on a general road.
If it is less than 250 m, the transmission request signal is transmitted 250 m before, and if it is 30 km / h or more, the transmission request signal is transmitted 450 m before. In addition, the transmission request signal is transmitted 300 m before the tollgate on a highway or a motorway. Further, the transmission request signal is transmitted 700 m before the speed limit of less than 80 km on an expressway or a motorway, and 1 km before the speed limit of 80 km or more. If another vehicle is traveling backward on the same road as the own vehicle or traveling on a different road, no transmission request is made.

Next, the operation of the information presenting apparatus 1 will be described with reference to the flowcharts shown in FIGS. The processing program according to this flowchart is controlled by the arithmetic unit 25.

First, in step S10, the current position information such as the latitude and longitude of the vehicle measured by the current position measuring device 5 is obtained by the information obtaining unit 17.

Next, in step S20, the information acquisition unit 1
7 obtains the map information of the road on which the vehicle is currently traveling from the map information storage device 7, and calculates the traveling state information, the road type information, and the like. When the calculation is completed, the current position information and the traveling direction information of the own vehicle are transmitted to another vehicle via the communication device 13.

In step S30, the traveling condition judging section 19
, The recording timing rule stored in the timing rule storage device 9 is compared with the current position information and traveling direction information of the own vehicle, the road type information of the road on which the vehicle is currently traveling, and the like. Determine whether or not.

For example, the vehicle reaches 80 m before an intersection, a branch, or a junction on a road with a speed limit of less than 30 km, or 150 m before an intersection, branch, or junction with a road with a speed of 30 km or more on a general road. Or, on a highway or motorway, at a low speed part before the tollgate, you can reach 100m before or at a speed limit of 80km / h on an expressway or automatic highway.
Reach 220m before the road less than or 80k / h
When the vehicle arrives at a position 300 m short of a road of m or more, the traveling state determination unit 19 determines to start recording. In this way, it is determined whether or not to start recording, and if recording is to be started, the process proceeds to step S40, otherwise, to step S150.

In step S40, the arithmetic unit 25 instructs the information storage device 11 to add the current position information and the traveling state information of the own vehicle to the video data and to start the storage, by a storage start instruction signal. Send When the information storage device 11 receives the storage start instruction signal, the information storage device 11 adds the current position information of the own vehicle measured by the current position measurement device 5 to the video data captured by the imaging device 3 and the traveling status information calculated by the calculation device 25. And saves the information in the information storage device 11.

Next, after transmitting the storage start instruction signal to the information storage device 11, the arithmetic device 25 sequentially executes the subroutine processing shown in steps S50, S60 and S70.

Next, in step S80, the information acquisition unit 17 acquires the current position information such as the latitude and longitude of the own vehicle measured by the current position measurement device 5.

Next, in step S90, the arithmetic unit 25
Gives this current location information to the map information storage device 7,
The map information of the road on which the vehicle is currently traveling is acquired, and the current traveling state information, road type information, and the like are calculated and obtained based on the map information and the current position information acquired by the information acquiring unit 17. When the calculation is completed, the current position information and the traveling direction information of the own vehicle are transmitted to another vehicle via the communication device 13.

In step S100, the traveling state determining unit 1
At 9, the recording timing rule stored in the timing rule storage device 9 is compared with the current position information, traveling direction information, and the like of the own vehicle to determine whether to stop recording.

For example, when the vehicle has passed an intersection, a branch, or a junction, the traveling state determination section 19 determines to stop recording. In this way, it is determined whether or not to stop the recording.
If not, go to step S18.
Go to 0.

In step S110, the arithmetic unit 25
A storage stop instruction signal is transmitted to the information storage device 11 so as to stop storing the current position information, the video data, and the traveling state information. When receiving the storage stop instruction signal, the information storage device 11 stops storing the current position information, the video data, and the traveling state information.

Steps S50, S120, S150, S
At 180, the processing of the reproduction / presentation subroutine shown in FIG. 3 is executed.

First, in step S51, it is determined whether or not the video data and the traveling state information are being reproduced. If the reproduction is being performed, the process proceeds to step S57. If the reproduction is not being performed, the process proceeds to step S53.

In step S53, the stored information search unit 21
In, a search is made as to whether the position information and the traveling direction information stored in the information storage device 11 include information that matches the current position information and the traveling direction information calculated by the information acquisition unit 17. If there is information that matches the position information or the traveling direction information, the process proceeds to step S55. Otherwise, the subroutine ends and the process returns to the main routine.

In step S55, the arithmetic unit 25 transmits to the information storage unit 11 a reproduction start instruction signal for reproducing the video data and the traveling situation information corresponding to the position information and the traveling direction information. Upon receiving the reproduction start instruction signal, the information storage device 11 transmits the video data and the traveling status information to the arithmetic device 25. The arithmetic unit 25 transmits the video data and the traveling state information to the video presenting device 15 to reproduce and present it.

In step S57, the arithmetic unit 25 determines whether the reception of the video data and the traveling state information from the information storage unit 11 has been completed. If it has ended, the process proceeds to step S59, while if it has not ended, this subroutine ends and the process returns to the main routine.

In step S59, the arithmetic unit 25 transmits a reproduction stop instruction signal for stopping the reproduction of the video data to the video presenting device 15, and after stopping the reproduction / presentation of the video data and the traveling state information, Then, the subroutine is terminated and the process returns to the main routine.

Steps S60, S130, S160, S
At 190, the processing of the transmission request subroutine shown in FIG. 4 is executed.

First, in step S61, the traveling condition judging section 19 determines the transmission request timing rule stored in the timing rule storage device 9, the calculated current position information and traveling direction information of the own vehicle, and the road on which the vehicle is traveling. Road type information, etc. and the current position information of other vehicles, etc.
It is determined whether to make a transmission request.

For example, when another vehicle is traveling ahead of the same road as the own vehicle, a transmission request signal is transmitted 250 m before the speed limit of 30 km on a general road, and 450 m before the speed limit of 30 km. Transmits a transmission request signal. In addition, the transmission request signal is transmitted 300 m before the tollgate on a highway or a motorway. Further, if the speed limit is less than 80 km on an expressway or a motorway, the transmission request signal is transmitted 700 m before the speed limit, and the speed limit
If it is 0 km or more, the transmission request signal is transmitted 1 km before.

In this way, it is determined whether or not a transmission request is to be made. If a transmission request is made, the process proceeds to step S63. If not, the subroutine is terminated and the process returns to the main routine. .

In step S63, it is determined whether a transmission request has already been made. If the transmission request signal has not been transmitted to another vehicle, the process proceeds to step S65. If the transmission request signal has already been transmitted, the subroutine ends and the process returns to the main routine.

In step S65, after transmitting the transmission request signal with the current position information and the traveling direction information added to another vehicle, the subroutine is terminated and the process returns to the main routine.

Steps S70, S140, S17
0, in S200, the processing of the reception processing subroutine shown in FIG. 5 is executed.

In step S71, it is determined whether or not video data or the like is being transmitted to another vehicle. If the transmission is being performed, the process proceeds to step S77. If the transmission is not being performed, the process proceeds to step S73.

In step S73, the communication device 13 determines whether a transmission request signal has been received from another vehicle. If so, the process proceeds to step S75; otherwise, the process proceeds to step S81.

In step S75, the arithmetic unit 25 causes the communication device 13 to start transmitting the video data corresponding to the position information and the traveling direction information added to the transmission request signal, and the transmission start instruction signal for starting the traveling status information. Send Upon receiving the transmission start instruction signal, the communication device 13 transmits the video data and the traveling status information stored in the information storage device 11 to another vehicle.

In a step S77, it is determined whether or not the transmission of the video data and the traveling status information has been completed. If it has been completed, the process proceeds to step S79. If it has not been completed, the process proceeds to step S81.

In step S79, the arithmetic unit 25 transmits a transmission stop instruction signal to the communication device 13 in order to stop the transmission of the video data and the traveling state information. Communication device 1
When the transmission stop instruction signal is received, the transmission end of the video data and the traveling state information is completed, and the process proceeds to step S81.

In step S81, it is determined whether or not position information, video data, traveling state information, and the like are being received and stored from another vehicle. If receiving and storing, step S
On the other hand, if it is determined that the receiving and storing is not being performed, the process proceeds to step S83.

In step S83, it is determined whether or not the communication device 13 has received position information, video data, and traveling state information from another vehicle. If so, the process proceeds to step S85; otherwise, the present subroutine is terminated and the process returns to the main routine.

In step S85, the arithmetic unit 25 transmits a storage start instruction signal to the information storage device 11 to start storing the received information. The information storage device 11
Start saving the received information.

In the step S87, it is determined whether or not the reception of the position information, the video data, and the traveling state information is completed.
If completed, the process proceeds to step S89, while if not completed, the present subroutine is terminated and the process returns to the main routine.

In step S89, the arithmetic unit 25 transmits a storage stop instruction signal to the information storage device 11 to stop storing the video data, the position information, and the traveling state information. When the information storage device 11 receives the storage stop instruction signal, the information storage device 11 ends the storage of the position information, the video data, and the traveling state information, ends this subroutine, and returns to the main routine.

As described above, when the vehicle arrives near an intersection, a branch, or a junction, a photographing, storing, and transmitting request is automatically made according to the road type information and the speed limit information, and thereafter, the intersection and the branch are made. -When passing through a junction, video data and traveling status information of intersections, branches, and junctions can be reproduced and presented in advance according to road type information and speed limit information. Further, by transmitting the transmission request signal to the other vehicle, it is possible to receive the video data and the traveling status information from the other vehicle, and to automatically save and present the video data and the traveling status information.

Further, when a transmission request signal is received from another vehicle, video data and traveling state information on the road on which the own vehicle has traveled can be transmitted to the other vehicle, and road guidance to the other vehicle can be reliably performed. can do.

In this embodiment, a case has been described in which a portable telephone is used as the communication device 13 and data is transmitted and received via a center computer or the like provided on the ground. The present invention is not limited to this, and data can be transmitted and received similarly when data is directly transmitted and received using a transmitting and receiving device.

When the storage of the video data, the position information and the driving condition information is stopped, if the same information as the position information and the driving condition information stored this time has already been stored, the video data is updated. By deleting the old video data, the capacity of the information storage device 11 can be effectively used.

Further, in step S75, if the other vehicle is traveling in front of the same road as the own vehicle or traveling on a different road, only the transmission of the traveling condition information is performed without transmitting the video data. I do. When the road in the traveling direction is running smoothly, the road is shown in green. When the average speed is lower than the speed limit, the road is shown in yellow. In the case where the vehicle is stopped or the frequency of starting and stopping is high, the traveling state of the other vehicle in the traveling direction can be confirmed by indicating the road in red.

Further, when traveling to a destination in a group including a plurality of vehicles, the position, average speed, and the like of other vehicles in the group are presented together with road map information.
Present position information, speed information, and the like of another vehicle can be presented.

(Second Embodiment) The second embodiment is applicable to the system configuration of the information presentation device 1 according to the first embodiment of the present invention shown in FIG.

The feature of the second embodiment is that the information stored in the information storage device 11 is searched, and when the information is detected, whether or not the information is information received from another vehicle is also searched. is there.

Next, the operation of the information presenting apparatus 31 according to the second embodiment will be described with reference to the flowcharts shown in FIGS. The processing program according to this flowchart is controlled by the arithmetic unit 25.

First, in step S 10, the current position information such as the latitude and longitude of the own vehicle measured by the current position measuring device 5 is obtained by the information obtaining unit 17.

Next, in step S20, the information acquisition unit 1
7 obtains the map information of the road on which the vehicle is currently traveling from the map information storage device 7, and calculates the traveling state information, the road type information, and the like. When the calculation is completed, the current position information and the traveling direction information of the own vehicle are transmitted to another vehicle via the communication device 13.

In step S30, the traveling condition judging section 19
, The recording timing rule stored in the timing rule storage device 9 is compared with the current position information and traveling direction information of the own vehicle, the road type information of the road on which the vehicle is currently traveling, and the like. Determine whether or not.

For example, the vehicle reaches a point 80 m before an intersection, a branch, or a junction on a road with a speed limit of less than 30 km, or reaches 150 m before an intersection, branch, or junction with a road with a speed of 30 km or more on a general road. Or, on a highway or motorway, at a low speed part before the tollgate, you can reach 100m before or at a speed limit of 80km / h on an expressway or automatic highway.
Reach 220m before the road less than or 80k / h
When the vehicle arrives at a position 300 m short of a road of m or more, the traveling state determination unit 19 determines to start recording. In this way, it is determined whether or not to start recording, and if recording is to be started, the process proceeds to step S40, otherwise, to step S240.

In step S40, the arithmetic unit 25 instructs the information storage device 11 to add the current position information and the traveling state information of the own vehicle to the video data and to start the storage, and to start the storage. Send When the information storage device 11 receives the storage start instruction signal, the information storage device 11 adds the current position information of the own vehicle measured by the current position measurement device 5 to the video data captured by the imaging device 3 and the traveling status information calculated by the calculation device 25. And saves the information in the information storage device 11.

Next, after transmitting the storage start instruction signal to the information storage device 11, the arithmetic device 25 sequentially executes the subroutine processing shown in steps S200, S60 and S70.

Next, in step S80, the information acquisition unit 17 acquires the current position information such as the latitude and longitude of the own vehicle measured by the current position measurement device 5.

Next, at step S90, the arithmetic unit 25
Gives this current location information to the map information storage device 7,
The map information of the road on which the vehicle is currently traveling is acquired, and the current traveling state information, road type information, and the like are calculated and obtained based on the map information and the current position information acquired by the information acquiring unit 17. When this calculation is completed, the current position information and the traveling direction information of the own vehicle are transmitted to another vehicle via the communication device 13.

In step S100, the traveling state determination unit 1
In 9, the recording timing rule stored in the timing rule storage device 9 is compared with the current position information, traveling direction information, and the like of the own vehicle to determine whether to stop recording.

For example, when the vehicle has passed an intersection, a branch, or a junction, the traveling state determination section 19 determines to stop recording. In this way, it is determined whether or not to stop the recording.
While proceeding to step S10, if not, step S26
Go to 0.

In step S110, the arithmetic unit 25
A storage stop instruction signal for stopping the storage of the current position information, the video data, and the traveling state information is transmitted to the information storage device 11. When receiving the storage stop instruction signal, the information storage device 11 stops storing the current position information, the video data, and the traveling state information.

Steps S200, S220, S240,
In S260, the processing of the reproduction / presentation / deletion subroutine shown in FIG. 7 is executed.

First, in step S201, it is determined whether or not video data is being reproduced. If the reproduction is being performed, the process proceeds to step S207. If the reproduction is not being performed, the process proceeds to step S203.

In step S203, the stored information search unit 2
In 1, it is searched whether or not the position information and the traveling direction information stored in the information storage device 11 include information that matches the current position information and the traveling direction information calculated by the information acquisition unit 17. If there is information that matches the position information or the traveling direction information, the process proceeds to step S205. Otherwise, the subroutine ends and the process returns to the main routine.

In step S205, the arithmetic unit 25
A reproduction start instruction signal is transmitted to the information storage device 11 in order to reproduce video data and traveling state information corresponding to the position information and the traveling direction information. Upon receiving the reproduction start instruction signal, the information storage device 11 transmits the video data and the traveling status information to the arithmetic device 25. The arithmetic unit 25 transmits the video data and the traveling state information to the video presenting device 15 to reproduce and present it.

In step S207, the arithmetic unit 25
It is determined whether the reception of the video data and the traveling state information from the information storage device 11 has been completed. If it has ended, the process proceeds to step S59, while if it has not ended, this subroutine ends and the process returns to the main routine.

In step S209, the arithmetic unit 25
A reproduction stop instruction signal is transmitted to the video presenting device 15 in order to stop the reproduction of the video data, and the reproduction and presentation of the video data and the traveling state information are stopped. Then, the process proceeds to step S211.

Then, in a step S211, it is determined whether or not the reproduced video data is received from another vehicle. If the video data has been received from another vehicle, the process proceeds to step S213; otherwise, the subroutine ends and returns to the main routine. In step S213, the video data deletion instruction signal is transmitted to the information storage device 11, and the information storage device 1
When receiving the deletion instruction signal, 1 deletes the video data and the position information and the traveling state information corresponding to the video data.

Steps S60, S130, S160, S
At 190, the processing of the transmission request subroutine shown in FIG. 4 is executed.

Steps S70, S140, S17
0, in S200, the processing of the reception processing subroutine shown in FIG. 5 is executed.

As described above, when the vehicle arrives near an intersection, a branch, or a junction, a photographing, storage, and transmission request is automatically made according to the road type information and the speed limit information, and thereafter, the intersection, the branch, and the junction are obtained. When passing through, video data and traveling state information of intersections, branches, and junctions can be reproduced and presented in advance in accordance with road type information and speed limit information. Also, by transmitting a transmission request signal to another vehicle, receiving video data and traveling status information from another vehicle,
It is possible to automatically save and present the video data and the driving situation information.

Further, when a transmission request signal is received from another vehicle, video data and traveling state information on the road on which the own vehicle has traveled can be transmitted to the other vehicle, and road guidance to the other vehicle can be reliably performed. can do.

Further, when the reproduction of the video data is stopped, if the video data is received from another vehicle, the video data is deleted so that a function of road guidance based on the video data obtained by the other vehicle is provided. , The capacity of the information storage device 11 can be effectively used.

(Third Embodiment) The third embodiment is applicable to the system configuration of the information presentation device 1 according to the first embodiment of the present invention shown in FIG.

A feature of the third embodiment is that, when the traveling condition information is old information (for example, traveling condition information acquired two hours or more ago), the traveling condition information is not presented and only the video data is displayed. Is to be presented.

The transmission request timing rules stored in the timing rule storage device 9 include, for example, an intersection, It is determined that there is a margin of about 30 seconds in front of the branching or merging point. If the other vehicle is traveling ahead of the same road as the own vehicle and the other vehicle has passed the current position of the own vehicle two hours before, the transmission request signal of the video data and the traveling state information is transmitted. When the other vehicle travels ahead of the same road as the own vehicle and the other vehicle has passed the current position of the own vehicle at least two hours before, the transmission request signal of only the video data is transmitted.

In any case, the timing rule of the transmission request signal is 2 on a general road if the speed limit is less than 30 km / h.
A transmission request signal is transmitted 50 m before, and a transmission request signal is transmitted 450 m before the speed limit of 30 km or more. Also,
A transmission request signal is transmitted 300 m before a tollgate on a highway or a motorway. Furthermore, if the speed limit is less than 80 km on expressways or motorways, 70
A transmission request signal is transmitted 0 m before, and if the speed limit is 80 km or more, the transmission request signal is transmitted 1 km before. If another vehicle is traveling behind the same road as the own vehicle or traveling on a different road, the transmission request signal is not transmitted.

Next, the operation of the information presenting apparatus 41 according to the third embodiment will be described with reference to the flowcharts shown in FIGS. The processing program according to this flowchart is controlled by the arithmetic unit 25.

First, in step S10, the current position information such as the latitude and longitude of the vehicle measured by the current position measuring device 5 is obtained by the information obtaining unit 17.

Next, in step S20, the information acquiring unit 1
7 obtains the map information of the road on which the vehicle is currently traveling from the map information storage device 7, and calculates the traveling state information, the road type information, and the like. When the calculation is completed, the current position information and the traveling direction information of the own vehicle are transmitted to another vehicle via the communication device 13.

In step S30, the traveling state judging section 19
, The recording timing rule stored in the timing rule storage device 9 is compared with the current position information and traveling direction information of the own vehicle, the road type information of the road on which the vehicle is currently traveling, and the like. Determine whether or not.

[0108] For example, the vehicle reaches 80 m before an intersection, a branch, or a junction on a road with a speed limit of less than 30 km, or 150 m before an intersection, branch, or junction with a road with a speed of 30 km or more on a general road. Or, on a highway or motorway, at a low speed section before the tollgate, you can reach 100m before or at a speed limit of 80km / h on a highway or automatic highway.
Reach 220m before the road less than or 80k / h
When the vehicle arrives at a position 300 m short of a road of m or more, the traveling state determination unit 19 determines to start recording. In this way, it is determined whether or not to start recording, and if recording is to be started, the process proceeds to step S40; otherwise, the process proceeds to step S340.

In step S40, the arithmetic unit 25 instructs the information storage device 11 to add the current position information and the traveling state information of the own vehicle to the video data and to start the storage, and to start the storage. Send When the information storage device 11 receives the storage start instruction signal, the information storage device 11 adds the current position information of the own vehicle measured by the current position measurement device 5 to the video data captured by the imaging device 3 and the traveling status information calculated by the calculation device 25. And saves the information in the information storage device 11.

Next, after transmitting the storage start instruction signal to the information storage device 11, the arithmetic unit 25 sequentially executes the subroutine processing shown in steps S300, S310 and S70.

Next, in step S80, the current position information such as the latitude and longitude of the vehicle measured by the current position measuring device 5 is obtained by the information obtaining unit 17.

Next, in step S90, the arithmetic unit 25
Gives this current location information to the map information storage device 7,
The map information of the road on which the vehicle is currently traveling is acquired, and the current traveling state information, road type information, and the like are calculated and obtained based on the map information acquired by the information acquiring unit 17 and the current position information. When the calculation is completed, the current position information and the traveling direction information of the own vehicle are transmitted to another vehicle via the communication device 13.

In step S100, the traveling state determination unit 1
At 9, the recording timing rule stored in the timing rule storage device 9 is compared with the current position information, traveling direction information, and the like of the own vehicle to determine whether to stop recording.

For example, when the vehicle has passed an intersection, a branch, or a junction, the traveling state determination section 19 determines to stop recording. In this way, it is determined whether or not to stop the recording.
If not, go to step S36.
Go to 0.

In step S110, the arithmetic unit 25
A storage stop instruction signal is transmitted to the information storage device 11 to stop storing the current position information, the video data, and the traveling state information. When receiving the storage stop instruction signal, the information storage device 11 stops storing the current position information, the video data, and the traveling state information.

Steps S300, S320, S340,
In S360, the processing of the reproduction / presentation subroutine shown in FIG. 9 is executed.

First, in step S301, it is determined whether or not video data and / or traveling state information is being reproduced. If the reproduction is being performed, the process proceeds to step S307. If the reproduction is not being performed, the process proceeds to step S303.

At step S303, the video data and / or
Alternatively, it is determined whether or not the traveling state information is being reproduced.
If it is during reproduction, the process proceeds to step S307,
If not, the process proceeds to step S303.

At step S303, the stored information search unit 2
In 1, it is searched whether or not the position information and the traveling direction information stored in the information storage device 11 include information that matches the current position information and the traveling direction information calculated by the information acquisition unit 17. If there is information that matches the position information or the traveling direction information, the process proceeds to step S305. If not, the subroutine ends and the process returns to the main routine.

In step S305, the arithmetic unit 25
A reproduction start instruction signal is transmitted to the information storage device 11 in order to reproduce the video data and / or the traveling state information corresponding to the position information and the traveling direction information. Information storage device 11
Transmits the video data and / or the traveling state information to the arithmetic unit 25 upon receiving the reproduction start instruction signal. The arithmetic unit 25 sends the video data and / or
Alternatively, the travel status information is transmitted and reproduced / presented.

In step S307, the arithmetic unit 25
It is determined whether the reception of the video data and / or the driving situation information from the information storage device 11 has been completed. If it has ended, the process proceeds to step S59, while if it has not ended, this subroutine ends and the process returns to the main routine.

In step S309, the arithmetic unit 25
A reproduction stop instruction signal is transmitted to the video presenting device 15 in order to stop the reproduction of the video data, and after the reproduction and presentation of the video data and / or the driving situation information are stopped, the subroutine is terminated and the process returns to the main routine. I do.

Steps S310, S330, S350,
In S370, the processing of the transmission request subroutine shown in FIG. 10 is executed.

First, in step S311, the traveling situation determination unit 19 determines the transmission request timing rule stored in the timing rule storage device 9, the calculated current position information and traveling direction information of the own vehicle, and the road on which the vehicle is traveling. It is determined whether or not to make a transmission request by comparing the road type information and the like with the current position information and the like of other vehicles.

For example, when another vehicle is traveling ahead of the same road as the host vehicle, the transmission request signal is transmitted 250 m before the speed limit on a general road if the speed is less than 30 km, and 450 m if the speed is 30 km or more. Transmits a transmission request signal. In addition, the transmission request signal is transmitted 300 m before the tollgate on a highway or a motorway. Further, if the speed limit is less than 80 km on an expressway or a motorway, the transmission request signal is transmitted 700 m before the speed limit, and the speed limit
If it is 0 km or more, the transmission request signal is transmitted 1 km before.

In this way, it is determined whether or not to make a transmission request. If a transmission request is made, the process proceeds to step S313. If not, the subroutine is terminated and the process returns to the main routine. .

In step S313, it is determined whether a transmission request has already been made. If the transmission request signal has not been transmitted to another vehicle, the process proceeds to step S315,
If the transmission has already been made, this subroutine ends and the process returns to the main routine.

In step S315, if the other vehicle has traveled ahead of the same road as the own vehicle and the other vehicle has passed the current position of the own vehicle two hours ago, the video data and the travel status information are displayed. Transmit a transmission request signal. When the other vehicle travels ahead of the same road as the own vehicle and the other vehicle has passed the current position of the own vehicle at least two hours before, the transmission request signal of only the video data is transmitted. In this way, after transmitting the transmission request signal with the current position information and the traveling direction information added thereto, the subroutine is terminated and the process returns to the main routine.

Further, steps S70, S140, S17
0, in S200, the processing of the reception processing subroutine shown in FIG. 5 is executed. When the position information of the other vehicle is stored in step S85, the information indicating the reception time is stored together with the position information.

As described above, when the vehicle reaches the vicinity of an intersection, a branch, or a junction, a photographing, saving, or transmission request is automatically performed according to the road type information or the speed limit information, and thereafter, the intersection, the branch, or the junction. When passing through, video data and traveling state information of intersections, branches, and junctions can be reproduced and presented in advance in accordance with road type information and speed limit information. Also, by transmitting a transmission request signal to another vehicle, receiving video data and traveling status information from another vehicle,
It is possible to automatically save and present the video data and the driving situation information.

Further, when a transmission request signal is received from another vehicle, video data and traveling state information on the road on which the own vehicle has traveled can be transmitted to the other vehicle, and road guidance to the other vehicle can be reliably performed. can do.

[0132] In addition, the traveling condition information is old information (for example,
In the case of the driving situation information acquired two hours or more ago), only the video data is reproduced without presenting the driving situation information, so that the communication can be performed with a smaller amount of information than in the first embodiment. can do.

[Brief description of the drawings]

FIG. 1 is a diagram showing a system configuration of an information presentation device 1 according to a first embodiment of the present invention.

FIG. 2 is a flowchart for explaining the operation of the information presenting device 1 according to the first embodiment of the present invention.

FIG. 3 is a flowchart for explaining a reproduction / presentation processing operation of the information presenting apparatus 1 according to the first embodiment of the present invention.

FIG. 4 is a flowchart for explaining a transmission request processing operation of the information presenting device 1 according to the first embodiment of the present invention.

FIG. 5 is a flowchart for explaining a reception processing operation of the information presenting device 1 according to the first embodiment of the present invention.

FIG. 6 is a flowchart for explaining an operation of the information presenting device 30 according to the second embodiment of the present invention.

FIG. 7 is a flowchart for explaining a reproduction / presentation / deletion processing operation of the information presenting device 30 according to the second embodiment of the present invention.

FIG. 8 is a flowchart for explaining the operation of the information presenting device according to the third embodiment of the present invention.

FIG. 9 is a flowchart for explaining a reproduction / presentation processing operation of the information presenting apparatus according to the third embodiment of the present invention.

FIG. 10 is a flowchart for explaining a transmission request processing operation of the information presenting device according to the third embodiment of the present invention.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 information presenting device 3 photographing device 5 current position measuring device 7 map information storing device 9 timing rule storing device 11 information storing device 13 communication device 15 video presenting device 25 arithmetic device

Claims (7)

[Claims] An information presenting device on a first vehicle side transmits position and direction information transmitting means for transmitting current position information and traveling direction information to a second vehicle, and transmitting a transmission request signal from the second vehicle. Information receiving means for transmitting the acquired and stored driving situation information to the second vehicle when receiving the information, wherein the information presenting device on the second vehicle side displays the current position of the second vehicle. Information acquisition means for acquiring the current position information indicating the traveling direction of the second vehicle and the transmission request timing rule indicating the timing of transmitting the transmission request signal to the first vehicle. A timing rule storage unit that transmits to the first vehicle when the current position information and traveling direction information of the second vehicle and the current position information and traveling direction information of the first vehicle match the transmission request timing rule; Send request signal Transmission requesting means; information storing means for storing the driving situation information obtained by the second vehicle and the driving situation information received from the first vehicle together with the current position information; and presenting the current position information and the driving situation information. An information presenting apparatus comprising: 2. An information presenting apparatus for a first vehicle, comprising: a position / direction information transmitting means for transmitting current position information and traveling direction information; and an acquisition / reception device when a transmission request signal is received from a second vehicle.
Information transmitting means for transmitting the stored video data and the driving situation information to the second vehicle, wherein the information presenting device on the second vehicle side is a current position indicating the current position of the second vehicle. Information acquiring means for acquiring information and traveling direction information indicating the traveling direction of the second vehicle; and storing a timing rule for storing a transmission request timing rule indicating a timing of transmitting a transmission request signal to the first vehicle. Means, if the current position information and traveling direction information of the second vehicle and the current position information and traveling direction information of the first vehicle match the transmission request timing rule, send a transmission request signal to the first vehicle. Transmission request means for transmitting; information storage means for storing video data and travel status information obtained by the second vehicle and video data and travel status information received from the first vehicle; Information presentation apparatus; and a presentation means for presenting the information. 3. The information storage means stores, together with the traveling state information, transmission source information indicating whether the traveling state information has been acquired by the second vehicle or traveling state information received from the first vehicle. 2. The information presenting apparatus according to claim 1, wherein when the traveling state information is received from the vehicle, the traveling state information is deleted after the traveling state information is presented to the video presenting means. 4. The information storage means, together with the stored video data and traveling status information, determines whether the video data and traveling status information acquired by the second vehicle or the video data and traveling status information received from the first vehicle. The transmission source information is stored, and when the data is the video data and the traveling status information received from the first vehicle, the video data and the traveling status information are deleted after being presented by the video presenting means. The information presentation device according to claim 2, wherein 5. The timing rule storage means stores, as a transmission request timing rule, information indicating that the first vehicle has precedently existed on the same road as the second vehicle. The information presentation device according to claim 1 or 2, wherein 6. The timing rule storage means includes, as transmission request timing rules, a video / status transmission request timing rule for requesting transmission of video data and driving status information, and a status transmission request for requesting transmission of driving status information. The timing rule is separately stored, and the video / situation transmission request timing rule stores information indicating that the first vehicle is present ahead of the same road as the second vehicle, The situation transmission request timing rule includes a case where the first vehicle exists following the same road as the second vehicle or a case where the first vehicle exists on a different road from the second vehicle. The information presentation device according to claim 2, wherein information indicating that the information is stored. 7. The timing rule storage means includes, as transmission request timing rules, a video / situation transmission request timing rule for requesting transmission of video data and traveling status information, and a video transmission request timing for requesting transmission of video data. The video and situation transmission request timing rule must be a case where the vehicle precedes the same road as the second vehicle and passes the current position of the second vehicle within a predetermined time. Is stored, and the video transmission request timing rule includes the first vehicle that precedes the same road as the second vehicle and that has passed the current position of the second vehicle outside a predetermined time. 3. The information presentation device according to claim 2, wherein information indicating that the case is stored.