JPH10132586A - Information presentation device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To securely guide a driver only for certain period of time before reaching, for example, an intersection irrespective of differences in the type of road, the number of lanes and the like. SOLUTION: An information acquisition part 25 acquires current position information of a vehicle at the time of being measured by a position measurement device 13 (step S10). Then the information acquisition part 25 supplies the current position information to a map information storage device 15 to acquire map information of a road on which the vehicle travels. Information such as the type of road or current running conditions including an advance direction is calculated from the information, such as the map information or current position information, acquired by the information acquisition part 25 (step S20). Then a running condition decision part 27 compares this calculation result with timing rule information stored in a picture recording storage device 17 to determine whether picture recording starts or not (step S30). A picture recording start command signal is transmitted to an information storage device 19 in order to record travelling picture information with position information or traveling condition information added (step S40).

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 that can be applied to an on-vehicle navigation system, and more particularly to an information presenting apparatus that performs road guidance using an image captured by an on-vehicle camera.

[0002]

2. Description of the Related Art Conventionally, an information presenting apparatus has been disclosed in
"Vehicle route guidance device" described in JP-A-2-138719
It has been known.

In this vehicle, a microcomputer 106 calculates a current position of a vehicle from a direction detected by a direction detection device 104 and a traveling distance based on a vehicle speed detected by a vehicle speed sensor 105, and the current position of the vehicle is determined in advance. Based on the intersection information stored in the road network storage device 107, it is determined whether or not the vehicle has arrived at the intersection, and it is determined whether or not the arrived intersection is an intersection that has already passed.
If the arrived intersection is not a passing intersection, the image of the traveling field of view taken by the magnetic camera 101 near the intersection is stored in the road network storage device 1 together with data on the approach direction to the intersection.
07, and a new intersection is stored each time the vehicle arrives at the intersection during normal driving. On the other hand, if the determined intersection is a passing intersection, the new intersection is stored in the road network storage device 107 during the return traveling. The display device 103 is configured to display the image of the traveling field of view near the intersection or the intersection mark together with the approach direction based on the approach direction data.

With such a configuration, the current position of the vehicle is calculated, and the intersection information and the image of the traveling field of view taken in the vicinity of the once passed intersection are stored together with the approaching direction data. However, when the vehicle arrives at the crossing intersection, the traveling view image or the intersection mark near the intersection can be displayed together with the approach direction based on the approach direction data, and route guidance can be reliably performed even when the vehicle passes through a different traveling route from the outward route. Therefore, even when the vehicle makes a U-turn, there is no problem, and there is an advantage that route guidance becomes possible.

[0005]

However, in the conventional information presenting apparatus, since the traveling speed of the vehicle is not taken into consideration, it is not possible to reliably provide road guidance for a certain time before reaching the intersection. . Also, in the case of a road having not only one lane on one side but also a plurality of lanes, the necessity of changing lanes was not taken into consideration. Guide could not be provided.

The present invention has been made in view of the above, and it is an object of the present invention to provide road guidance for a certain period of time before reaching an intersection even when there is a difference in the type of road, the number of lanes, and the like. It is an object of the present invention to provide an information presenting device capable of performing the above.

[0007]

According to the first aspect of the present invention,
In order to solve the above problems, a position measuring means for measuring the current position of the own vehicle, an information storing means for adding the current position information and the traveling direction information of the own vehicle to the video information of the driving situation, and a current position measurement Information searching means for searching the current position information of the own vehicle stored in the information storing means in correspondence with the current position information measured by the means, and video presenting means for presenting the driving situation video information stored in the information storing means When the video information stored in the information storage means is searched for video information suitable for the current position and the traveling direction of the own vehicle, the stored video information is reproduced to provide road guidance. An information presenting device for performing a photographing operation for photographing a situation in a traveling direction of a vehicle, a map information storing device for storing map information and road type information, and a current position information measured by the position measuring device. hand Information acquisition means for acquiring the road information type and traveling state information of the currently traveling road from the map information storage means, and a recording rule storage means for pre-storing recording rule information indicating a rule of when to start recording, Judgment means for judging the recording start time in correspondence with the road type information and the driving situation information to the pre-stored recording rule information, and when the judging means judges that the recording start time, the video information of the driving situation The main point is that the current position information and the traveling direction information of the own vehicle are added to and stored.

According to a second aspect of the present invention, in order to solve the above-mentioned problem, the gist of the invention is that the imaging means starts imaging in accordance with an imaging start instruction signal from the determination means.

According to a third aspect of the present invention, in order to solve the above-mentioned problem, the recording rule storing means stores the distance to an intersection, a branch point, or a junction as a shooting start distance.

According to a fourth aspect of the present invention, in order to solve the above-mentioned problem, the recording rule storing means sets a distance longer than the photographing start distance when a traveling road has a plurality of lanes. Is the gist.

According to a fifth aspect of the present invention, in order to solve the above problem, the first recording rule storage means switches the photographing start distance depending on whether the traveling road is a general road, an expressway, or a motorway. Is the gist.

According to a sixth aspect of the present invention, in order to solve the above-mentioned problem, the recording rule storage means switches the photographing start distance according to a speed limit defined on a road on which the vehicle is traveling. .

According to a seventh aspect of the present invention, in order to solve the above-mentioned problem, the recording rule storage means may switch the photographing start distance in accordance with a speed limit specified for a road on which the vehicle is traveling. The point is to set so that the arrival time to the branch point or the junction can be secured for a predetermined time.

[0014]

According to the first aspect of the present invention, the recording start timing is determined by associating the road type information and the driving situation information with the pre-stored recording rule information. In this case, the current position information and the traveling direction information of the own vehicle are added to the video information of the driving situation and stored, so that the stored video information is suitable for the current position and the traveling direction of the own vehicle. When the video information is searched, the stored video information can be reproduced to provide road guidance.

According to the second aspect of the present invention, when it is determined that it is time to start recording, the photographing is started in accordance with the photographing start instruction signal, so that the photographed video information is stored. Amount of information to be transmitted and received can be reduced.

According to the third aspect of the present invention, the distance to an intersection, a junction, or a junction is stored as a shooting start distance, so that the imaging before the intersection, junction, or junction is stored. You can start shooting from the starting distance,
Road guidance can be reliably performed before reaching an intersection, a junction, or a junction.

According to the fourth aspect of the present invention, when the traveling road has a plurality of lanes, the distance is set to be longer than the photographing start distance. Even on a road, video information near an intersection, a junction, or a junction can be presented in advance, and road guidance can be reliably performed before reaching the intersection, junction, or junction.

According to the fifth aspect of the present invention, the photographing start distance is switched depending on whether the traveling road is a general road, an expressway, or an automobile exclusive road. The driving situation video is automatically captured and recorded.After that, when passing through the intersection, junction, junction, etc., video information near the intersection, junction, or junction is determined in advance according to the type of road. Can be presented, and road guidance can be reliably performed before reaching an intersection, a junction, or a junction.

According to the sixth aspect of the present invention, the photographing start distance is switched according to the speed limit specified for the road on which the vehicle is traveling, so that the vehicle automatically travels according to the speed limit. When the situation video is shot and recorded, and then passes through the intersection, junction, junction, etc.,
Video information near an intersection, a junction, or a junction can be presented in advance according to the speed limit, and road guidance can be reliably performed before reaching the intersection, junction, or junction.

Further, according to the present invention, even if the photographing start distance is switched according to the speed limit specified for the road on which the vehicle is traveling, the arrival time to the intersection, the branch point, or the junction is maintained. Since it is set so that it can be secured only for a predetermined time, the travel time video is automatically captured by securing the arrival time to the intersection, junction, or junction for the predetermined time according to the speed limit After being recorded, when passing through the intersection, junction, junction, etc., video information near the intersection, junction, or junction can be presented in advance according to the speed limit. Road guidance can be reliably performed before reaching a point or a junction.

[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. As shown in FIG. 1, the photographing device 11 is, for example, a CCD.
A camera is mounted on the vehicle to capture the running conditions of the vehicle. As the position measuring device 13, for example, a GPS receiving device is used.
It measures the latitude and longitude of the vehicle and outputs the current position information.

The map information storage device 15 stores, for example, a CD-RO into which map data is written in order to store map information having latitude and longitude information such as intersections, junctions, junctions, and the like.
M and a CD-ROM reader are used. The recording rule storage device 17 uses, for example, a ROM, and converts a rule of recording timing into a shooting start distance and stores it in advance. The information storage device 19 uses, for example, a hard disk, and stores the video information corresponding to the traveling state including the traveling direction by adding current position information and traveling state information of the own vehicle. The video presenting device 23 uses a liquid crystal monitor, for example, and presents video information corresponding to the saved driving situation.

The arithmetic unit 21 includes, for example, a CPU, a ROM,
A microcomputer having a RAM, a timer, and the like is used, and an information acquisition unit 25, an information determination unit 27, an information search unit 2
9 and so on. Specifically, the information acquiring unit 25 uses the current position information output from the position measurement device 13 and the map information corresponding to the current position information to output the road type information and the speed limit information of the road on which the vehicle is currently traveling. Perform the process of acquiring. The information acquisition unit 25 performs a process of acquiring the current vehicle speed information based on the current position information output from the position measurement device 13 based on a periodic interrupt signal generated by a timer. In obtaining the current vehicle speed information, a vehicle speed sensor may be used.

The information judging section 25 compares the recording timing rule with the current position information, the running condition, and the like, and judges whether or not it is the timing to perform the recording. The information search unit 29 searches for information by comparing current position information and traveling state information of the own vehicle with video information storing images of the traveling state and the current traveling state.
The rule for the timing of recording to be stored in the recording rule storage device 17 is set so that there is a margin of about 10 seconds before a point such as an intersection, a branch point, or a junction. As shown in FIG. 2, on an ordinary road, the speed limit is 30 kph.
When the speed is less than m / h, an image is taken from 80 m before the point. When the speed limit is 30 km / h or more, 15
Shoot from 0m before. In low-speed areas before tollgates on expressways and motorways, photography is taken from 100 meters before.
When the speed limit is less than 80 km / h, 220 m
The photograph is taken from the front, and when the speed limit is 80 km / h, the photograph is taken from 300 m before. In each case,
After passing through the intersection, the junction, and the junction, the photographing by the photographing device 11 is stopped.

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 21. In step S10, the information acquisition unit 25 acquires current position information such as the latitude and longitude of the vehicle measured by the position measurement device 13. Next, step S
In 20, the information acquisition unit 25 gives the current position information to the map information storage device 15 to acquire the map information of the road on which the vehicle is currently traveling. Based on the above, current driving state information including the traveling direction, road type information, and the like are calculated and obtained. As shown in FIG. 2, the road type information includes a general road, an expressway, a motorway, and the like, and the current traveling state information includes a speed limit and a traveling direction.

In step S30, the current driving condition information, road type information, and the like, which are the result of this calculation, are added to the arithmetic unit 21.
The recording rule storage device 1
Then, it is determined whether or not to start recording by comparing with the timing rule information for recording stored in. For example, as road type information, a general road having a speed limit of 30 km / h or less has reached a point 80 m before an intersection, a branch point, a confluence, or the like, or a general road has an intersection having a speed limit of 30 km / h or more. The vehicle has reached 150m before the junction, junction, etc., 100m before the tollgate on an expressway or motorway, or has a speed limit of 80km / h or less on an expressway or motorway. 220m on the road
If the vehicle has reached the front or has reached 300 m before a highway or a road dedicated to automobiles with a speed limit of 80 km / h or more, the traveling state determination unit 27 determines to perform recording. In this way, the traveling situation determination unit 27 determines whether or not to start recording, and if recording is to be started, the process proceeds to step S40.
From step S35 to step S200 shown in FIG.
Then, the travel video information already stored in the information storage device 19 is reproduced and presented to the video presentation device 32.

In step S40, a recording start instruction signal is sent to the information storage device 19 so that the recording is performed by adding the position information and the traveling state information to the traveling image information. The information storage device 19 adds the video information captured by the image capturing device 11 in response to the recording start instruction signal from the information determination unit 27,
The current position information measured by the position measuring device 13 and the traveling condition information such as the traveling direction and the speed limit calculated by the arithmetic device 21 are stored. Next, after the arithmetic unit 21 sends a recording start instruction signal to the information storage device 19, the process proceeds to step S200 shown in FIG. In step S60, the information acquisition unit 25 acquires current position information such as the latitude and longitude of the vehicle measured by the position measurement device 13. Next, in step S70, the information acquisition unit 25 gives the current position information to the map information storage device 15 to acquire the map information of the currently traveling road.
Based on the map information, current position information, and the like obtained in step 5, current traveling state information including road directions, road type information, and the like are calculated and obtained.

In step S80, the current driving situation information, road type information, and the like, which are the results of this calculation, are added to the arithmetic unit 21.
The recording rule storage device 1
Then, it is determined whether or not to stop the recording by comparing with the timing rule information for recording stored in. For example, when the vehicle has passed an intersection, a junction, or a junction, the traveling state determination unit 27 determines to stop recording. In this way, the traveling situation determination unit 27 determines whether or not to stop the recording. If the recording is to be stopped, the process proceeds to step S90. If not, the process proceeds from step S85 to FIG. The process proceeds to step S200 shown in FIG.

In step S90, a recording stop instruction signal for stopping recording is sent to the information storage device 19. When the information storage device 19 receives the recording stop instruction signal, the video information captured by the imaging device 11, the current position information measured by the position measurement device 13, and the arithmetic device 21
The storage of the traveling state information calculated in step is stopped. Next, in step S100, the process proceeds to step S200 shown in FIG.
The process proceeds to step S300 shown in FIG.

Here, the processing contents in the reproduction / presentation routine shown in FIG. 4A will be described. Step S35,
When a subroutine call occurs in steps S50, S85, and S100, the processing of a reproduction / presentation routine represented by step S200 is executed. In step S210, it is determined whether or not the information storage device 19 is reproducing the video information of the driving situation. If the reproduction is being performed, the process proceeds to step S240. If the reproduction is not being performed, the process proceeds to step S220.

In step S220, the information retrieval unit 29 in the arithmetic unit 21 saves the information in the information storage unit 19 based on the current position information, the driving situation information and the road type information representing the road type calculated by the information acquisition unit 25. The searched video information is searched to determine whether the video information has been searched. If the video information has been searched, the process proceeds to step S230; otherwise, the present subroutine is terminated and the process returns to the main routine. In step S230, the arithmetic unit 21 sends to the information storage device 19 a reproduction instruction signal for reproducing the traveling state information stored in the information storage device 19. Information storage device 19 that has received a reproduction instruction signal
Reproduces the traveling state information and presents it to the video presenting device 23.

In step S240, the information storage device 19
It is determined whether or not the traveling status information sent from is completed. If the process has been completed, the process proceeds to step S250,
If the processing has not been completed, this subroutine is terminated and the processing returns to the main routine. On the other hand, in step S250,
The arithmetic unit 21 sends a stop instruction signal to the information storage device 19 to stop the reproduction of the traveling situation information to the information storage device 19, and after stopping the reproduction, terminates this subroutine and returns to the main routine.

As described above, when the current driving condition corresponds to the recording timing rule, the driving condition image is stored together with the current position and the driving condition of the own vehicle. When a video suitable for the driving situation is searched, the video stored in order to guide the driving situation and the road is configured to be reproduced, so when the driving situation corresponding to the recording timing rule is reached, The video is automatically taken and recorded according to the road type and speed limit, and then when passing through that point, video information is presented in advance according to the road type and speed limit to ensure road guidance. Can be

Further, the processing contents in the stored information update routine shown in FIG. 4B will be described. Step S11
If a subroutine call occurs at 0, step S300
The processing of a stored information update routine represented by is performed. In step S310, the image stored in the information storage device 19 in the information search unit 29 in the calculation device 21 based on the current position information, the driving situation information, and the road type information representing the road type calculated by the information acquisition unit 25. The information is searched to determine whether video information has been detected. If video information is detected, the process proceeds to step S320, otherwise, the subroutine is terminated and the process returns to the main routine. In step S320, the video information stored in the information storage device 19 is deleted, the subroutine ends, and the process returns to the main routine.

As described above, when the storage of the driving image information, the current position information, the driving state information, and the like in the information storage device 19 is stopped, the same image information as the currently stored driving position information and the traveling direction is already stored. When the information is stored in the information storage device 19, the stored information is updated and the old information that has already been stored is deleted, so that the information storage for storing the driving image information, the current position information, and the driving state information is performed. The storage capacity of the device 19 can be used effectively.

As described above, when the vehicle approaches the intersection, the junction, or the junction, the driving situation image is automatically taken and recorded according to the type of road and the speed limit. When passing through the junction, the video information such as the intersection, the junction, and the junction is presented to the video presenting device 23 in advance according to the road type and the speed limit, so that the intersection, the junction, and the junction are reached. Road guidance can be reliably performed before the user performs the operation.

In the information presenting apparatus 1 shown in the first embodiment, the recording rule is set so that there is a margin of about 10 seconds before an intersection, a branch point, a junction, or the like. When approaching the vicinity of a junction or junction, the driving situation video is automatically captured and recorded according to the type of road and the speed limit, and then when passing through the intersection, junction, or junction, The video information such as the intersection, the junction, and the junction can be presented to the video presentation device 23 in advance according to the road type and the speed limit, and the road guidance can be reliably provided before reaching the intersection, junction, or junction. It can be performed.

(Second Embodiment) FIG. 5 is a diagram showing a system configuration of an information presentation device 51 according to a second embodiment of the present invention. The feature of the information presenting device 51 shown in the figure is that the photographing device 11 constituting the information presenting device 1 shown in FIG.
Has been replaced with a photographing device 61 using a digital camera. Next, the operation of the information presenting apparatus 51 will be described with reference to the flowcharts shown in FIGS. The processing program according to this flowchart is controlled by the arithmetic unit 21.

In step S410, the position measuring device 13
To obtain the current position information of the own vehicle. Next, step S
At 420, the information acquisition unit 25 gives the current location information to the map information storage device 15 to acquire the map information of the currently traveling road, and then acquires the map information and the current location information acquired by the information acquisition unit 25. Based on the above, current driving state information including the traveling direction, road type information, and the like are calculated and obtained. In addition,
As shown in FIG. 2, as the road type information, the current traveling situation information includes a speed limit and a traveling direction.

In step S430, the result of this calculation is
The traveling state determination unit 27 in the arithmetic unit 21 determines whether or not to perform recording by comparing with the timing rule information for recording stored in the recording rule storage device 17. For example, on a general road with a speed limit of 30 km / h or less, the vehicle reaches 80 m before an intersection, a junction, a junction, etc.
On a general road with a speed limit of 30 km / h or more, the vehicle reaches 150 m before an intersection, a junction, or a junction, or 10 on a low-speed part before a tollgate on an expressway or motorway.
The vehicle has reached just before 0 m, on a highway or a motorway, and has reached 220 m on a road with a speed limit of 80 km / h or less.
If you reach 300m ahead on a road of m / h or more,
The traveling state determination unit 27 determines to perform recording. In this way, the traveling situation determination unit 27 determines whether or not to start recording, and if recording is to be started, the process proceeds to step S440. Proceed to S600. Next, in step S435, step S60 shown in FIG.
Go to 0.

In step S440, the information judging section 27 judges that the recording should be started.
To the information storage device 19 that stores traveling video information, position information, traveling status information, and the like, and starts recording for starting recording. Send an instruction signal. The information storage device 19 performs recording by adding the position information and the driving situation information to the driving video information. Here, the photographing device 61 that has received the imaging start instruction signal performs photographing of the traveling state of the vehicle, gives traveling image information to the information storage device 19, and adds position information, traveling state information, and the like to the traveling image information to obtain information. The data is stored in the storage device 19.

Next, in step S450, the process proceeds to step S600 shown in FIG. In step S460, the position measurement device 13 acquires the current position information of the own vehicle. Next, in step S470, the information acquisition unit 25 gives the current position information to the map information storage device 15 to acquire the map information of the road on which the vehicle is currently traveling, and then acquires the map information acquired by the information acquisition unit 25. And the current traveling state information including the traveling direction, the road type information, and the like, based on the current position information and the like. In step S480, the traveling state determination unit 27
Based on the current driving situation information, road type information, current position information, and the like calculated by the information acquisition unit 25, the recording is compared with the recording timing rule stored in the recording rule storage device 17, and the recording is performed. It is determined whether to stop. In this way, the traveling situation determination unit 27 determines whether or not to stop the recording. If the recording is to be stopped, the process proceeds to step S490; otherwise, the process proceeds from step S485 to the steps illustrated in FIG. Proceed to S600.

In step S490, the information judging section 27
Sends a recording stop instruction signal to the information storage device 19 to stop recording. Next, an imaging stop instruction signal for stopping imaging is transmitted to the imaging device 61.
When the information storage device 19 receives the recording stop instruction signal, the image information captured by the imaging device 11 and the position measurement device 13
Then, the storage of the current position information measured in step S1 and the traveling state information calculated by the arithmetic unit 21 is stopped. Next, when the imaging device 61 receives the imaging stop instruction signal, the imaging of the driving situation is stopped. Next, in step S500, the process proceeds to step S600 shown in FIG.

Here, the processing contents in the reproduction / presentation routine shown in FIG. 7 will be described. When a subroutine call occurs in steps S435, S450, S485, and S500, the processing of the reproduction / presentation routine represented by step S600 is executed. In step S610, it is determined whether or not the information storage device 19 is reproducing the traveling state information. If the reproduction is being performed, the process proceeds to step S640. If the reproduction is not being performed, the process proceeds to step S620.

In step S620, the information search unit 29
Searches the information storage device 19 for information that matches the current position information, the driving situation information, and the road type information, which are the results calculated by the information acquisition unit 25, and as a result, If is stored, the process proceeds to step S630. In step S630, the arithmetic unit 21
Sends a reproduction instruction signal to the information storage device 19 for reproducing the traveling state information stored in the information storage device 19. The information storage device 19 that has received the reproduction instruction signal reproduces the traveling state information and presents it to the video presenting device 23.

On the other hand, in step S640, it is determined whether or not the traveling status information sent from information storage device 19 has been completed. If the processing has been completed, the process proceeds to step S650, while if not completed, the present subroutine is completed and the process returns to the main routine. In step S650,
The arithmetic unit 21 sends a stop instruction signal to the information storage device 19 to stop the reproduction of the traveling situation information to the information storage device 19, and after stopping the reproduction, terminates this subroutine and returns to the main routine.

As described above, when the vehicle approaches the intersection, the branch point, or the junction, the driving situation image is automatically taken and recorded according to the type of road and the speed limit. When passing through an intersection, a junction, a junction, or the like, video information near an intersection, a junction, or a junction can be presented to the video presentation device 23 in advance according to the type of road or the speed limit. Road guidance can be reliably performed before reaching an intersection, a junction, or a junction.

Further, in the information presenting device 51 according to the second embodiment, since the rule of the recording timing is determined in the same manner as in the first embodiment, the same effect as in the first embodiment can be obtained. Further, since the recording start instruction signal or the recording stop instruction signal output to the information storage device 19 is configured to transmit the imaging start instruction signal or the imaging stop instruction signal to the imaging device 61 at the same time, the transmission / reception amount of the video information is reduced. can do.

(Third Embodiment) A third embodiment is directed to a system configuration of the information presenting apparatuses 1 and 51 according to the first or second embodiment of the present invention shown in FIG. 1 or FIG. It can be adapted. A feature of the third embodiment is that a recording rule storage device 1 for storing a timing rule for recording.
At 7, in the case of a road with one lane on each side, there is a margin of about 10 seconds before an intersection, a branch point, a junction, etc.
In addition, in the case of a road having a plurality of lanes, it is determined that there is a margin of about 20 seconds before an intersection, a branch point, a junction, or the like in order to provide a margin for changing lanes.

More specifically, as shown in FIG. 8, when the speed limit is less than 30 km / h on an ordinary road with one lane on one side, 8
The photograph is taken from 0 m short, and if it is longer, the photograph is taken from 150 m short. Speed limit of 30k on multi-lane roads
If it is less than m / h, the image is taken from 160 m before, and if it is more than 300 m, the image is taken from 300 m. On lowways in front of toll gates on highways and motorways with one lane on each side, images are taken from 100 m before the vehicle. If the speed limit is less than 80 km / h, images are taken from 220 m before the vehicle. Shoot.

On a multi-lane highway or a motorway, a low-speed portion before a tollgate is photographed 200 m before the speed limit, when the speed limit is less than 80 km / h, a photo is taken 440 m before the speed limit. Shoot from 600m before.
In any case, the photographing is stopped when the vehicle passes through an intersection, a branch point, or a junction.

As described above, when a vehicle approaches an intersection, a junction, or a junction, a driving situation image is automatically taken in accordance with the type of road, the speed limit, or whether or not the road needs to change lanes. It is recorded, and after that, when passing through the intersection, junction, or confluence, depending on the type of road, speed limit, or whether the road needs to change lanes, it is necessary to check the vicinity of the intersection, junction, or junction in advance. Since the video information can be presented to the video presenting device 23, road guidance can be reliably performed before reaching an intersection, a junction, or a junction.

Further, in the information presenting apparatus according to the third embodiment, as a rule of recording timing, in the case of a one-lane road on one side, about 10 seconds before an intersection, a junction, a junction, or the like. In the case of a road with multiple lanes, it is determined that there is a margin of about 20 seconds before an intersection, a junction, a junction, etc., so near an intersection, a junction, or a junction When approaching, the driving situation video is automatically captured and recorded according to the road type, speed limit, or whether the lane needs to be changed, and then when passing through intersections, junctions, junctions, etc. In advance, video information near an intersection, a junction, or a junction is displayed in advance by the video presenting device 23 in accordance with the type of road, the speed limit, and whether or not the road needs to change lanes.
Therefore, road guidance can be reliably performed before reaching an intersection, a junction, or a junction.

The timing rules to be stored in the recording rule storage device 17 described in the first to third embodiments include, in addition to the timing rules for recording as described above, for example, when a large vehicle runs in front of the vehicle. Shooting device 11
When the image field of view is blocked, the information storage device 19
By prohibiting recording on the vehicle, it is possible to prevent the presentation of unnecessary images such as the image of the rear of the large vehicle during the subsequent route guidance. Similarly, by changing the rule of the timing of recording according to the height of the vehicle on which the imaging device 11 is mounted, as the rule of the timing of storing in the recording rule storage device 17,
It is possible to record or reproduce a video that is easy to understand at the time of subsequent guidance.

[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 diagram showing a recording timing rule stored in a recording rule storage device 17;

FIG. 3 is a flowchart for explaining the operation of the information presentation device 1.

FIG. 4 is a flowchart of a subroutine for explaining an operation of the information presenting apparatus 1.

FIG. 5 is a diagram showing a system configuration of an information presenting device 51 according to a second embodiment of the present invention.

FIG. 6 is a flowchart for explaining the operation of the information presenting device 51.

FIG. 7 is a flowchart of a subroutine for explaining the operation of the information presentation device 1.

FIG. 8 is a diagram showing a recording timing rule stored in a recording rule storage device 17;

FIG. 9 is a diagram showing a configuration of a conventional information presenting device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Photographing device 13 Position measuring device 15 Map information storage device 17 Recording rule storage device 19 Information storage device 21 Computing device 23 Video presenting device 25 Information acquisition unit 27 Information judgment unit 29 Information search unit

Claims (7)

[Claims] 1. A position measuring means for measuring a current position of an own vehicle, an information storing means for adding current position information and a traveling direction information of the own vehicle to video information of a driving situation and storing the information, and a current position measuring means. Information retrieval means for retrieving the current position information of the own vehicle stored in the information storage means corresponding to the measured current position information, and video presenting means for presenting the traveling situation video information stored in the information storage means. When video information suitable for the current position and the traveling direction of the own vehicle is retrieved from the video information stored in the information storage unit, the stored video information is reproduced to provide road guidance. An information presenting device, comprising: a photographing means for photographing a situation in a traveling direction of a vehicle; a map information storing means for storing map information and road type information; and a current position information based on the current position information measured by the position measuring means. Map information Information acquisition means for acquiring the type of road information and the driving situation information of the road currently traveling from the information storage means; recording rule storage means for pre-storing recording rule information indicating the rule of when to start recording; Determining means for determining the recording start time by associating the type information and the driving situation information with the pre-stored recording rule information; and An information presenting apparatus characterized by adding and storing current position information and traveling direction information of a vehicle. 2. The information presenting apparatus according to claim 1, wherein said photographing means starts photographing in accordance with a photographing start instruction signal from said determining means. 3. The information presenting apparatus according to claim 1, wherein the recording rule storage unit stores a distance to an intersection, a branch point, or a junction as a shooting start distance. 4. The information presenting apparatus according to claim 3, wherein the recording rule storage means sets a distance longer than the photographing start distance when the traveling road has a plurality of lanes. 5. The photographing start distance according to claim 3, wherein the recording rule storage means switches the photographing start distance depending on whether the traveling road is a general road, an expressway, or a motorway. Information presentation device. 6. The information presenting apparatus according to claim 3, wherein the recording rule storage unit switches the photographing start distance according to a speed limit defined on a road on which the vehicle is traveling. 7. The recording rule storing means, even if the photographing start distance is switched in accordance with a speed limit specified for a road on which the vehicle is traveling, determines the arrival time to the intersection, the branch point, or the junction point by a predetermined time. 7. The information presenting apparatus according to claim 6, wherein the setting is made so that only the time can be secured.