JP2006292666A - On-vehicle drive recorder, and on-vehicle navigation device equipped therewith - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an on-vehicle drive recorder and an on-vehicle navigation system equipped therewith capable of realizing demonstration traveling or route guide by a highly-visible actually-photographed image wherein the image gives interruption feeling of little. <P>SOLUTION: This drive recorder is equipped with a control means 4 for performing control so that environment information when photographing an image is preserved correlatively with the image, when preserving the image photographed at a traveling spot of a vehicle; and control so that, when acquiring a newly acquired image photographed by a camera 5 at the same traveling spot as the traveling spot where an image preserved already is photographed, environment information when photographing the newly acquired image is compared with environment information when photographing the image preserved already, and that, when the two pieces of the environment information agree with each other, the newly acquired image is preserved, and the image preserved already is deleted. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an in-vehicle drive recorder and an in-vehicle navigation system provided with the same, and more particularly to an in-vehicle drive recorder suitable for storing an image taken at a travel point of a vehicle by a camera mounted on the vehicle. The present invention relates to an in-vehicle navigation system provided with this.

  Conventionally, an in-vehicle drive recorder has been used as a device for analyzing the cause of occurrence of a vehicle accident.

  This in-vehicle drive recorder can analyze the recorded traveling state by recording the traveling state of the vehicle such as the vehicle speed, acceleration and steering angle before and after the occurrence of the accident.

  Also, in recent years, a camera that captures the surroundings of the vehicle is installed, and by recording and storing images of the surroundings of the vehicle before and after the occurrence of the accident taken by this camera, the running state at the time of the accident is further detailed. In-vehicle drive recorders that can be analyzed have come to be adopted.

  Furthermore, in the future, it is conceivable to use the captured image of the camera stored in such an in-vehicle drive recorder for demonstration driving of the navigation device and route guidance.

  Here, in the demonstration driving, when it is assumed that the host vehicle actually travels on the set route, the scenery that can be seen from the driver's seat at each driving point on the set route is displayed on the display unit. In other words, the user can grasp the advance method to the destination in advance by an image before departure or at the time of rest by using this demonstration run.

  Therefore, when the captured image of the camera is used for the demonstration travel, for example, the captured image captured at the same travel point as the virtual travel point (not actually traveling) on the set route is displayed. As the travel progresses, that is, as the virtual travel point moves, the data are sequentially read from the in-vehicle drive recorder and sequentially displayed on the display unit of the navigation device.

  In addition, when the captured image of the camera is used for route guidance, for example, when the host vehicle actually travels on the set route, the image was taken at the same travel point as the current travel point on the route. The captured images are sequentially read from the in-vehicle drive recorder as the travel point moves and are sequentially displayed on the display unit.

  As described above, by using the captured image of the camera stored in the in-vehicle drive recorder for the demonstration driving and the route guidance, the user can experience the realistic demonstration driving and the route guidance with the live-action image.

Japanese Patent Laid-Open No. 09-14976 JP-A-11-83510

  However, a series of a plurality of captured images taken at different traveling points sequentially displayed on the display unit when the captured images of the camera stored in the above-described in-vehicle drive recorder are used for demonstration traveling or route guidance. However, when the images are taken under different circumstances such as the weather, there is a feeling of discontinuity between the images.

  For example, a photographed image taken on a sunny day as shown in FIG. 4A, a photographed image taken on a cloudy day as shown in FIG. 4B, and a rainy day as shown in FIG. When the captured images taken on a day are used as a series of a plurality of captured images used for demonstration driving and route guidance, sunny, cloudy, and rainy images will be displayed continuously on the display unit. The image will be difficult to see.

  A major factor causing such a sense of discontinuity in the image is that the above-described in-vehicle drive recorder stores a captured image of a camera imaged at a certain traveling point and then newly captured images at the same traveling point. When the image is acquired, a new captured image is always saved, and the existing captured image is deleted.

  In other words, when only a new photographed image is always stored, a series of photographed images sequentially displayed on the display unit promotes a state where images are photographed under different environments. End up.

  Therefore, the present invention has been made in view of the above points, and an in-vehicle drive recorder capable of realizing a demonstration traveling or route guidance with an easy-to-see real image with little discontinuity in images, and an in-vehicle drive recorder equipped with the same The object is to provide a navigation system.

  In order to achieve the above-described object, a feature of the in-vehicle drive recorder according to the present invention is an in-vehicle drive recorder that stores an image taken at a travel point of the vehicle by a camera mounted on the vehicle, Control means for performing control for storing the image, and the control means stores at least environmental information when the image was captured when the image captured at the traveling point of the vehicle is stored as the image. This control was acquired when an image captured by a camera mounted on the host vehicle was acquired at the same travel location as the travel location where the stored image was captured, and the control for storing the images in association with each other. The environment information when the image is taken is compared with the environment information when the already stored image is taken. If the information matches each other, the acquired image is stored, and the already stored image is deleted. If the two environment information does not match each other, the acquired image is stored. At the same time, the control is performed to continuously store the already stored image.

  And according to such a structure, when storing the image (hereinafter, referred to as “captured image”) taken at the travel point of the vehicle by the camera mounted on the vehicle, the same control is performed by the control means. It is possible to save a plurality of photographed images taken under different environments at a traveling point, and the latest photographed image among a plurality of photographed images taken under the same environment at the same traveling point. It becomes possible to save only.

  A feature of the in-vehicle drive recorder according to the present invention is that the environmental information includes weather information.

  And according to such a structure, it becomes possible to preserve | save the some picked-up image image | photographed under the different weather in the same driving | running | working point by control by a control means, and weather in the same driving | running | working point. Only the latest photographed image among a plurality of photographed images photographed under the same environment including the image can be stored.

  Furthermore, a feature of the in-vehicle drive recorder according to the present invention is that the environmental information includes seasonal information.

  And according to such a structure, it becomes possible to preserve | save the some image | photographed image | photographed under the different seasons in the same driving | running | working point by control by a control means, and a season in the same driving | running | working point. Only the latest photographed image among a plurality of photographed images photographed under the same environment including the image can be stored.

  Furthermore, the on-vehicle drive recorder according to the present invention is characterized in that the environmental information includes time zone information.

  And according to such a structure, it becomes possible to preserve | save the several picked-up image image | photographed in the different time slot | zone in the same driving | running | working point by control by a control means, and time zone | Only the latest photographed image among a plurality of photographed images photographed under the same environment including the image can be stored.

  In addition, a feature of the in-vehicle drive recorder according to the present invention is that an already stored image is an image captured by a camera mounted on another vehicle, and the previously stored image is captured. The environmental information is that it is environmental information when an image taken by a camera mounted on the other vehicle is taken.

  And according to such a structure, it becomes possible to utilize effectively the picked-up image of the camera mounted in the other vehicle, and the environmental information when this image was picked up.

  Furthermore, the feature of the in-vehicle drive recorder according to the present invention is that, when the stored image is used for the demonstration traveling or the route guidance, the same environmental information as the environment information acquired when the demonstration traveling or the route guidance is executed. The image which has is in the point used.

  And according to such a structure, it becomes possible to use the picked-up image image | photographed on the same environment as the environment at the time of performing demonstration driving | running | working or route guidance for demonstration driving | running | working or route guidance.

  Furthermore, the features of the in-vehicle navigation system according to the present invention include an in-vehicle drive recorder that stores an image taken at a travel point of the vehicle by a camera mounted on the vehicle, and the in-vehicle drive recorder. An in-vehicle navigation system comprising an in-vehicle navigation device capable of displaying an image on a display unit during a demonstration run or route guidance, wherein the in-vehicle drive recorder stores the image Control means for performing the control, and when the control means saves an image taken at the travel point of the vehicle, at least environmental information at the time when the image was taken is stored in association with the image. Control and the vehicle at the same travel point as the travel point where the stored image was taken When an image taken by an on-board camera is acquired, the environmental information when the acquired image is taken is compared with the environmental information when the already stored image is taken. When the two pieces of environment information match each other, the acquired image is stored, and the already stored image is deleted, and when the two pieces of environment information do not match each other, the acquisition is performed. And the control for continuously storing the already stored image is performed.

  According to such a configuration, the in-vehicle drive recorder can store a plurality of photographed images photographed under different environments at the same travel point under the control of the control unit, and the same It is possible to save only the latest photographed image among a plurality of photographed images taken under the same environment at the traveling point of the vehicle and photographed under the same weather at a plurality of different traveling points before and after each other. A series of a plurality of photographed images can be used for demonstration driving or route guidance.

  A feature of the in-vehicle navigation system according to the present invention is that the environmental information includes weather information.

  According to such a configuration, the in-vehicle drive recorder can store a plurality of photographed images photographed under different weather at the same travel point under the control of the control unit, and the same It is possible to save only the latest photographed image among a plurality of photographed images photographed under the same environment including the weather at the travel point.

  Furthermore, the feature of the in-vehicle navigation system according to the present invention is that the environmental information includes seasonal information.

  According to such a configuration, the in-vehicle drive recorder can store a plurality of photographed images photographed under different seasons at the same travel point under the control of the control means, and the same It is possible to store only the latest photographed image among a plurality of photographed images photographed under the same environment including the season at the travel point.

  Furthermore, the on-vehicle navigation system according to the present invention is characterized in that the environment information includes time zone information.

  According to such a configuration, the in-vehicle drive recorder can store a plurality of photographed images photographed in different time zones at the same travel point under the control of the control means, and the same Only the latest photographed image among a plurality of photographed images photographed under the same environment including the time zone at the travel point can be stored.

  In addition, a feature of the in-vehicle navigation system according to the present invention is that an already stored image is an image captured by a camera mounted on another vehicle, and the previously stored image is captured. The environmental information is that it is environmental information when an image taken by a camera mounted on the other vehicle is taken.

  And according to such a structure, it becomes possible to utilize effectively the picked-up image of the camera mounted in the other vehicle, and the environmental information when this image was picked up.

  Furthermore, the feature of the in-vehicle navigation system according to the present invention is that an image having the same environment information as the environment information acquired when the demonstration traveling or the route guidance is executed is displayed on the display unit.

  And according to such a structure, it becomes possible to display on the display part the picked-up image image | photographed on the environment same as the environment at the time of performing a demonstration driving | running | working or route guidance.

  According to the in-vehicle drive recorder according to the present invention, it is possible to store a plurality of photographed images photographed under different environments at the same travel point under the control of the control unit. A series of captured images taken under the same environment at different driving points can be used for demonstration driving or route guidance, thus realizing demonstration driving or route guidance with easy-to-see live-action images with little image discontinuity. be able to. In addition, as a result of being able to save only the latest photographed image among a plurality of photographed images photographed under the same environment at the same traveling point, a more realistic demonstration traveling by using the latest photographed image And route guidance can be realized, and the number of captured images to be saved can be reduced to reduce the burden on the in-vehicle drive recorder.

  In addition, according to the vehicle-mounted drive recorder according to the present invention, it is possible to store a plurality of captured images taken under different weather at the same travel point by the control of the control means, and at the same travel point. As a result of being able to save only the latest photographed image among a plurality of photographed images taken in the same environment including the weather, it was photographed under the same weather at a plurality of different traveling points before and after each other. A series of a plurality of photographed images can be used for demonstration running or route guidance, and realistic demonstration running or route guidance can be realized with a more easily captured real image with less sense of image discontinuity.

  Furthermore, according to the in-vehicle drive recorder according to the present invention, it is possible to store a plurality of photographed images taken under different seasons at the same travel point by the control of the control means, and at the same travel point. As a result of being able to save only the latest photographed image among a plurality of photographed images taken in the same environment including the season, it was photographed under the same season at a plurality of different traveling points before and after each other. A series of a plurality of photographed images can be used for demonstration running or route guidance, and realistic demonstration running or route guidance can be realized with a more easily captured real image with less sense of image discontinuity.

  Furthermore, according to the in-vehicle drive recorder according to the present invention, it is possible to store a plurality of photographed images taken at different time zones at the same travel point by the control of the control means, and at the same travel point. As a result of being able to save only the latest photographed image among a plurality of photographed images photographed under the same environment including the time zone, the images were photographed at the same time zone at a plurality of different traveling points before and after each other. A series of a plurality of photographed images can be used for demonstration running or route guidance, and realistic demonstration running or route guidance can be realized with a more easily captured real image with less sense of image discontinuity.

  Further, according to the in-vehicle drive recorder according to the present invention, it is possible to effectively use the captured image of the camera mounted on the other vehicle and the environment information when the image is captured, and as a result, at the same traveling point. Since a larger number of captured images captured under different environments can be stored, it is possible to realize a demonstration run or route guidance with a more realistic image with less sense of image discontinuity.

  Furthermore, according to the in-vehicle drive recorder according to the present invention, as a result of being able to use the captured image taken under the same environment as the environment when executing the demonstration running or the route guidance for the demonstration running or the route guidance, Furthermore, realistic demonstration driving or route guidance can be realized.

  Furthermore, according to the in-vehicle navigation system of the present invention, the in-vehicle drive recorder can store a plurality of photographed images photographed under different environments at the same travel point under the control of the control means. As a result, it is possible to use a series of a plurality of captured images taken in the same environment at a plurality of different traveling points before and after each other for demonstration driving or route guidance, so that it is easy to see a live-action image with little image discontinuity A demonstration run or route guidance can be realized. Further, only the latest photographed image of a plurality of photographed images photographed under the same environment at the same travel point can be stored in the in-vehicle drive recorder. As a result, the latest photographed image is further used. Realistic demonstration driving and route guidance can be realized, and the number of captured images to be saved by the in-vehicle drive recorder can be reduced to reduce the burden on the in-vehicle drive recorder.

  Moreover, according to the vehicle-mounted navigation system according to the present invention, the vehicle-mounted drive recorder can store a plurality of captured images captured under different weather at the same travel point under the control of the control means. As a result of being able to save only the latest photographed image among a plurality of photographed images taken under the same environment including the weather at the same travel point, the same weather at a plurality of different travel points before and after each other A series of captured images taken under can be used for demonstration driving or route guidance, and realistic demonstration driving or route guidance can be realized with a more realistic image with less sense of discontinuity. .

  Furthermore, according to the in-vehicle navigation system of the present invention, the in-vehicle drive recorder can store a plurality of photographed images photographed under different seasons at the same travel point under the control of the control means. As a result of being able to save only the latest captured image among a plurality of captured images taken in the same environment including the season at the same travel point, the same season at a plurality of different travel points before and after each other A series of captured images taken under can be used for demonstration driving or route guidance, and realistic demonstration driving or route guidance can be realized with a more realistic image with less sense of discontinuity. .

  Furthermore, according to the in-vehicle navigation system of the present invention, the in-vehicle drive recorder can store a plurality of photographed images photographed at different times during the same travel point under the control of the control means. As a result, it is possible to save only the latest photographed image among a plurality of photographed images photographed under the same environment including the time zone at the same travel point. A series of captured images taken during the time period can be used for demonstration driving or route guidance, and realistic demonstration driving or route guidance can be realized with a more realistic image with less sense of discontinuity. .

  In addition, according to the vehicle-mounted navigation system according to the present invention, it is possible to effectively use the captured image of the camera mounted on the other vehicle and the environmental information when this image is captured. Since a larger number of captured images captured under different environments can be stored, it is possible to realize a demonstration run or route guidance with a more realistic image with less sense of image discontinuity.

  Furthermore, according to the in-vehicle navigation system according to the present invention, a captured image photographed under the same environment as that when executing the demonstration driving or the route guidance can be displayed on the display unit. Demonstration driving or route guidance can be realized.

  Hereinafter, an embodiment of an in-vehicle drive recorder according to the present invention and an in-vehicle navigation system including the in-vehicle drive recorder will be described with reference to FIGS. 1 to 3.

  As shown in FIG. 1, the in-vehicle navigation system 1 in the present embodiment has an in-vehicle drive recorder 2.

  The in-vehicle drive recorder 2 includes a storage unit 3 that can store information, and a control unit 4 as a control unit that controls storage of information by the storage unit 3.

  The in-vehicle navigation system 1 has a camera 5 connected to the in-vehicle drive recorder 2, and this camera 5 is located at the front of the traveling direction of the host vehicle such as a road or an intersection at each traveling point of the host vehicle. An image around the vehicle on the side is taken, and the taken image is output to the in-vehicle drive recorder 2.

  The captured image of the camera 5 output to the in-vehicle drive recorder 2 is temporarily stored in the control unit 4 and then definitely stored in the storage unit 3 under the control of the control unit 4.

  The storage unit 3 may be a hard disk drive, for example.

  Furthermore, the in-vehicle navigation system 1 has an environment information detection unit 6 connected to the in-vehicle drive recorder 2, and this environment information detection unit 6 is used when the camera 5 of the own vehicle captures a captured image. The environmental information is detected, and the detection result is output to the in-vehicle drive recorder 2.

  And the detection result of the environment information detection part 6 output to the vehicle-mounted drive recorder 2 is input into the control part 4. FIG.

  The environment information may be information including at least one information of weather, season, and time zone when the captured image is captured.

  In addition, the environment information detection unit 6 may include a detection unit that detects the brightness of a captured image, for example. In this case, according to the brightness of the photographed image detected by the detection means, it is possible to detect weather information when a photographed image such as sunny, cloudy or rainy is photographed.

  Furthermore, the environment information detection unit 6 may include a communication unit, for example. In this case, it is possible to detect the weather, season, or time zone information when the photographed image is taken by accessing an information source such as network information or a radio broadcast station via the communication means.

  Furthermore, the environment information detection unit 6 may include an image recognition unit for captured images. In this case, by performing feature point matching of images such as rain and snow by the image recognition means, it is possible to detect weather and season information when the captured image is captured.

  And in this embodiment, when the control part 4 preserve | saves the picked-up image of the camera 5 in the memory | storage part 3, the environmental information at the time of the said picked-up image which was a detection result of the environment information detection part 6 being taken out, Control for storing the captured image in association with the captured image is performed as additional information of the captured image.

  Thereby, the storage unit 3 stores the captured image of the camera 5 and the environmental information when the captured image is captured in association with each other.

    The in-vehicle navigation system 1 has a travel point detection unit 7 connected to the in-vehicle drive recorder 2, and the travel point detection unit 7 is the host vehicle when the captured image of the camera 5 is captured. The travel point is detected, and the detection result is output to the in-vehicle drive recorder 2.

  The traveling point detection unit 7 may be, for example, a GPS receiver, a combination of various sensors such as a vehicle speed sensor and a gyro sensor, or both the GPS receiver and the various sensors. It may be provided.

  The control unit 4 associates the traveling point of the host vehicle detected by the traveling point detection unit 7 with the captured image as additional information of the captured image when storing the captured image of the camera 5 in the storage unit 3. Control to save.

  Thereby, the storage unit 3 stores the captured image of the camera 5 and the traveling point of the host vehicle when the captured image is captured in association with each other.

  Furthermore, in this embodiment, the control unit 4 is the same travel point (in other words, the travel point where the captured image (hereinafter referred to as “stored image”) already stored in the storage unit 3 is captured. When a captured image (hereinafter referred to as “newly acquired image”) of the camera 5 mounted on the host vehicle is acquired at the same shooting position), the following control is performed.

  In other words, when a newly acquired image captured at the same travel point as the travel point where the stored image is captured is acquired, the control unit 4 first adds environment information (additional information when the newly acquired image is captured). Information) and environmental information (additional information) when the stored image is captured.

  Whether or not the stored image and the newly acquired image are images taken at the same travel point is based on, for example, the information on the travel point of the host vehicle stored in association with each image described above. Judgment can be made.

  When the two pieces of compared environmental information match each other, the control unit 4 stores the newly acquired image and performs control for deleting the already stored image.

  On the other hand, when the two pieces of compared environmental information do not match each other, the control unit 4 stores the newly acquired image and performs control for continuously storing the already stored image.

  Such control by the control unit 4 makes it possible to store a plurality of captured images taken under different environments at the same travel point in the storage unit 3 and to maintain the same environment at the same travel point. Only the latest photographed image of the plurality of photographed images taken below can be stored in the storage unit 3.

  Furthermore, in the present embodiment, the stored image may be an image taken by a camera mounted on another vehicle.

  That is, as shown in FIG. 1, the in-vehicle navigation system 1 has a communication unit 8 connected to the in-vehicle drive recorder 2.

  The in-vehicle drive recorder 2 can acquire the captured image of the camera of the other vehicle and the environment information when the image is captured by inter-vehicle communication by the communication unit 8.

  As a result, the captured image of the camera of the other vehicle can be effectively used as the stored image, and the environment information when the stored image is captured is effectively used for the comparison by the control unit 4. can do.

  In the case where the already-stored image and the environmental information are acquired from the other vehicle using such inter-vehicle communication, it is necessary that the other vehicle is equipped with the in-vehicle navigation system 1 in the present embodiment.

  When the in-vehicle navigation system 1 is installed in another vehicle, the in-vehicle navigation system 1 on the other vehicle side also uses the captured image and the environment information stored in the in-vehicle drive recorder 2 on the own vehicle side by inter-vehicle communication. Not to mention what you can do.

  Further, the in-vehicle navigation system 1 has an in-vehicle navigation device 9 connected to the in-vehicle drive recorder 2.

  The in-vehicle navigation device 9 has a navigation CPU 11, and the navigation CPU 11 can read a captured image stored in the in-vehicle drive recorder 2.

  An input unit 12 such as a remote control or a touch panel of the display unit 13 is connected to the navigation CPU 11, and input information such as a desired destination can be set via the input unit 12. .

  The navigation CPU 11 calculates a route to the destination based on the input information, and executes a demonstration run and route guidance along the route calculated by the route calculation.

  A display unit 13 is connected to the navigation CPU 11, and a photographed image read from the in-vehicle drive recorder 2 is displayed on the display unit 13 during demonstration driving and route guidance. .

  The navigation CPU 11 is connected to a map data storage unit 15 in which map data is stored. The navigation CPU 11 reads the map data stored in the map data storage unit 15 and displays the map on the display unit 13 during route guidance.

  Further, the navigation CPU 11 is connected with a vehicle position detection unit 14 that detects the current position of the vehicle (vehicle position). The detection result of the vehicle position detection unit 14 is obtained when route guidance or map display is performed. Is used as appropriate.

  The own vehicle position detection unit 14 may be, for example, a GPS receiver, or may be a combination of sensors such as a vehicle speed sensor and a gyro sensor as appropriate, like the travel point detection unit 7.

  The navigation CPU 11 will be described in more detail. When the navigation CPU 11 executes the demo traveling, the captured image of the camera 5 captured at the same traveling point as the virtual traveling point on the route calculated by the route calculation is as follows. The data is sequentially read from the in-vehicle drive recorder 2 as the demonstration travels, that is, the virtual travel point moves.

  At that time, the navigation CPU 11 takes a series of a plurality of photographed images photographed in the same environment at a plurality of different traveling points before and after each other as a photographed image photographed at the same traveling point as the virtual traveling point. As the demonstration travels, the vehicle-mounted drive recorder 2 reads sequentially.

  At this time, since the captured image stored in the in-vehicle drive recorder 2 is added with the environment information and the travel point information when the captured image is captured as additional information, refer to the additional information. By doing this, it is possible to reliably read a series of a plurality of captured images that are taken at the same travel point as the virtual travel point and that are taken in the same environment.

  The navigation CPU 11 sequentially displays captured images sequentially read from the in-vehicle drive recorder 2 on the display unit 13.

  As a result, a series of a plurality of captured images photographed under the same environment at a plurality of different traveling points before and after each other can be sequentially displayed on the display unit 13 as the demonstration traveling proceeds. Yes.

  Specifically, for example, as shown in FIGS. 2A to 2C, as a series of the plurality of captured images, captured images that are all captured on a sunny day are displayed as the demonstration run progresses. The information can be sequentially displayed on the unit 13.

  As a result, the user can experience a demonstration running with an easy-to-view live-action image with little image discontinuity.

  Note that the traveling speed of the demonstration traveling and the like may be freely changed by the user via the input unit 2.

  Further, when the navigation CPU 11 executes route guidance, when the host vehicle actually travels on the route calculated by the route calculation, the navigation CPU 11 is the same as the current travel point (for example, an intersection) on the route. Images taken by the camera 5 taken at the travel point are sequentially read from the in-vehicle drive recorder 2 as the host vehicle advances.

  At that time, as in the case of the demonstration traveling, the navigation CPU 11 mounts a series of a plurality of photographed images photographed under the same environment at a plurality of different traveling points before and after each other as the host vehicle proceeds. Are sequentially read from the drive recorder 2.

  At this time, as in the case of the demonstration driving, the environment information and the information on the travel point when the captured image is captured are added as additional information to the captured image stored in the in-vehicle drive recorder 2. Therefore, it is possible to reliably read a series of a plurality of captured images taken at the same travel point as the current travel point and taken in the same environment.

  The navigation CPU 11 sequentially displays captured images sequentially read from the in-vehicle drive recorder 2 on the display unit 13.

  As a result, a plurality of series of photographed images photographed under the same environment at a plurality of different traveling points before and after each other can be sequentially displayed on the display unit 13 as the host vehicle progresses. Yes.

  As a result, the user can receive route guidance based on an easy-to-view live-action image with little sense of image discontinuity.

  Note that the current travel point of the host vehicle at the time of route guidance can be detected as the host vehicle position by the host vehicle position detection unit 14.

  Next, as a function of this embodiment, a series of processes performed by the in-vehicle drive recorder 2 will be described with reference to FIG.

  In this embodiment, after starting the process of the vehicle-mounted drive recorder 2, first, as shown in step 1 (ST1) of FIG. 3, the control unit 4 causes the camera 5 and the environment information detection unit 6 to respectively After acquiring the newly acquired image and the environment information when the newly acquired image was taken, the process proceeds to step 2 (ST2).

  Next, in step 2 (ST2), whether or not an already stored image taken at the same travel point as the newly acquired image acquired in step 1 (ST1) is stored in the storage unit 3 by the control unit 4. Determine.

  If such an already stored image is stored, the process proceeds to step 3 (ST3). If not stored, the process proceeds to step 5 (ST5).

  In step 5 (ST5), the control unit 4 controls the storage unit in a state in which the newly acquired image acquired in step 1 (ST1) and the environment information when the newly acquired image is captured are associated with each other. 3 to finish the process.

  On the other hand, in step 3 (ST3), the control unit 4 obtains environment information when the newly acquired image acquired in step 1 (ST1) is captured and environment information when the already stored image is captured. A comparison is made to determine whether these two pieces of environmental information match each other.

  In step 3 (ST3), if the two pieces of environment information match each other, the process proceeds to step 4 (ST4), and if not, the process proceeds to step 6 (ST6).

  Next, in step 6 (ST6), under the control of the control unit 4, the newly acquired image acquired in step 1 (ST1) and the environment information when this newly acquired image is taken are stored in the storage unit 3. Then, the stored image and the environment information at the time when the stored image is photographed are continuously stored in the storage unit 3 and the processing is ended.

  On the other hand, in step 4 (ST4), under the control of the control unit 4, the newly acquired image acquired in step 1 (ST1) and the environment information when this newly acquired image is taken are stored in the storage unit 3. Then, the stored image and the environment information at the time when the stored image was photographed are deleted from the storage unit 3 and the process is terminated.

  As described above, according to the present embodiment, a plurality of photographed images photographed under different environments at the same travel point can be stored under the control of the control unit 4.

  As a result, a series of a plurality of captured images taken under the same environment at a plurality of different traveling points before and after each other can be used for demonstration traveling or route guidance. A demonstration run or route guidance can be realized.

  In addition, as a result of being able to save only the latest photographed image among a plurality of photographed images photographed under the same environment at the same traveling point, a more realistic demonstration traveling by using the latest photographed image And route guidance can be realized, and the number of captured images to be saved can be reduced to reduce the burden on the in-vehicle drive recorder 2.

  In addition, this invention is not limited to embodiment mentioned above, A various change is possible as needed.

  For example, in the above-described embodiment, a plurality of series of captured images taken in the same environment at a plurality of different traveling points before and after each other are read from the in-vehicle drive recorder 2 at the time of demonstration traveling or route guidance. Although displayed on the display unit 13, the captured images are read so that these captured images are images captured in the same environment as when the demonstration run or the route guidance is executed. You may make it control.

  By doing so, a photographed image adapted to the weather and the season when executing the demonstration driving or the route guidance can be displayed on the display unit 13, so that a more realistic demonstration driving or the route guidance can be realized. it can.

  In this case, the environment when the demonstration traveling or the route guidance is executed may be detected by the environment information detection unit 6.

The block diagram which shows embodiment of the vehicle-mounted drive recorder which concerns on this invention, and a navigation system provided with the same The figure which shows typically an example of a series of some picked-up images used for demonstration driving | running | working in embodiment of the vehicle-mounted drive recorder which concerns on this invention, and a navigation system provided with the same. The flowchart which shows embodiment of the vehicle-mounted drive recorder which concerns on this invention The figure which shows typically an example of a series of picked-up images that the feeling of discontinuity of an image arises

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Car navigation system 2 Car drive recorder 3 Memory | storage part 4 Control part 5 Camera 9 Navigation apparatus 13 Display part

Claims (12)

An in-vehicle drive recorder that stores an image taken at a travel point of the vehicle by a camera mounted on the vehicle,
Control means for performing control for storing the image;
This control means
When storing an image captured at the travel point of the vehicle, at least control for storing environment information associated with the image when the image is captured;
Environment information when this acquired image is taken when an image taken by a camera mounted on the host vehicle is acquired at the same travel point as the travel point where the already stored image was taken And the environment information at the time when the already stored image was taken, and when these two environment information matches each other, the acquired image is stored and the already stored image And when the two environment information do not match each other, the acquired image is stored, and the control for continuously storing the already stored image is performed. In-vehicle drive recorder.   The in-vehicle drive recorder according to claim 1, wherein the environmental information includes weather information.   The in-vehicle drive recorder according to claim 1, wherein the environmental information includes seasonal information.   The in-vehicle drive recorder according to any one of claims 1 to 3, wherein the environment information includes time zone information. The already stored image is an image taken by a camera mounted on another vehicle,
The environment information when the already stored image is captured is the environment information when the image captured by the camera mounted on the other vehicle is captured. Item 5. The on-vehicle drive recorder according to any one of items 4 to 6.   2. The image having the same environment information as the environment information acquired when executing the demonstration driving or the route guidance is used when the stored image is used for the demonstration driving or the route guidance. The in-vehicle drive recorder according to any one of claims 5 to 5. An in-vehicle drive recorder that stores an image taken at a travel point of the vehicle by a camera mounted on the vehicle;
An in-vehicle navigation system comprising an in-vehicle navigation device capable of displaying an image stored in the in-vehicle drive recorder on a display unit during a demonstration run or route guidance,
The in-vehicle drive recorder comprises control means for performing control for storing the image,
This control means
When storing an image captured at the travel point of the vehicle, at least control for storing environment information associated with the image when the image is captured;
Environment information when this acquired image is taken when an image taken by a camera mounted on the host vehicle is acquired at the same travel point as the travel point where the already stored image was taken And the environment information at the time when the already stored image was taken, and when these two environment information matches each other, the acquired image is stored and the already stored image And when the two environment information do not match each other, the acquired image is stored, and the control for continuously storing the already stored image is performed. In-vehicle navigation system.   The in-vehicle navigation system according to claim 7, wherein the environmental information includes weather information.   The in-vehicle navigation system according to claim 7 or 8, wherein the environmental information includes seasonal information.   The in-vehicle navigation system according to any one of claims 7 to 9, wherein the environment information includes time zone information. The already stored image is an image taken by a camera mounted on another vehicle,
The environment information when the already stored image is captured is the environment information when the image captured by the camera mounted on the other vehicle is captured. The vehicle-mounted navigation system according to any one of items 10.   12. The image according to claim 7, wherein an image having the same environment information as the environment information acquired when the demonstration traveling or the route guidance is executed is displayed on the display unit. In-vehicle navigation system.

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