JP7272715B2 - Latent accident recorder - Google Patents

Description

The present invention relates to a latent accident recording device for recording latent accident information.

A drive recorder is a device that captures images of the exterior and interior of a vehicle with a camera and records the captured image data in a removable recording medium such as a micro SD card. Recording of video data by the drive recorder is performed continuously from the start of the engine to the stop of the engine, for example.

Such a drive recorder is equipped with a GPS so that the position where the vehicle is traveling can be detected. There are also drive recorders that have a reporting function that uses GPS to report near misses. A near miss is a situation that could have caused an accident, although it did not result in an accident.

In order to activate the near-miss reporting function in the drive recorder, it is necessary to record the near-miss and its position information on a recording medium in advance. When the position of the vehicle detected by GPS approaches or reaches a pre-recorded position, warning information is displayed on the screen or output by voice.

WO2008/010392

For example, in transportation companies and taxi companies, different drivers run in the same area. For this reason, each driver is highly likely to drive at the same point that was registered as a near-miss. Therefore, it is preferable that all drivers can share near misses. In order to deal with this, for example, near-miss information recorded by drive recorders of a plurality of vehicles is stored in an external database. The drive recorder of each vehicle acquires near-miss information from the database, and issues a warning when the vehicle approaches the position corresponding to the near-miss.

However, the near-miss information acquired from a plurality of vehicles includes various kinds of information, and the number of such information is enormous. For this reason, information that is necessary for some drivers may not be necessary for other drivers. In addition, there is information that is not suitable as a near miss in the first place.

If all of this information is included and recorded in the drive recorders of all vehicles as near misses, warnings will be issued frequently, which is troublesome for each driver. In addition, since the storage capacity of the storage medium of the drive recorder is small, it is desirable to avoid wasting the storage area with unnecessary near-miss information.

SUMMARY OF THE INVENTION The present invention has been proposed to solve the problems of the prior art as described above, and its object is to provide a latent accident recording device that allows a plurality of drivers to share necessary latent accident information. It is in.

In order to achieve the above object, the latent accident recording device of the present invention records latent accident information including video data before and after the occurrence of a latent accident and position information from a recording medium recording video data captured by a camera of a drive recorder. a reading unit that reads, a writing unit that writes the latent accident information to the recording medium, a flag adding unit that adds a flag for distinguishing whether the latent accident information is shared or not to each recording medium; have

Further, the latent axis recording device of the present invention includes a communication unit that transmits and receives information to and from a drive recorder via a network, and video data before and after the occurrence of a latent accident received by the communication unit from the drive recorder and the location of the accident. and a flag adding unit for adding a flag for distinguishing whether or not to transmit to each drive recorder to the latent accident information including the information according to each drive recorder.

According to the present invention, it is possible to provide a latent accident recording device that allows a plurality of drivers to share necessary latent accident information.

1 is an overall configuration diagram showing a latent accident recording system of a first embodiment; FIG. 1 is a front side perspective view showing a drive recorder of a first embodiment; FIG. 1 is a rear side perspective view showing the drive recorder of the first embodiment; FIG. FIG. 3 is a perspective view showing a memory card accommodating portion of the drive recorder of the first embodiment; It is a perspective view showing an example of installation of the drive recorder of the first embodiment. 2 is a hardware block diagram of the drive recorder of the first embodiment; FIG. 3 is a functional block diagram of a control unit of the drive recorder of the first embodiment; FIG. FIG. 4 is an explanatory diagram showing formats of video data and latent accident information; FIG. 11 is an explanatory diagram showing an example of warning of latent accident information; 3 is a functional block diagram of a control device of the latent accident recording device of the first embodiment; FIG. 4 is a flow chart showing a procedure of flagging according to the first embodiment; 4 is a flowchart showing procedures for collecting and notifying latent accident information according to the first embodiment; FIG. 10 is a functional block diagram of a control unit of the drive recorder of the second embodiment; FIG. 11 is a functional block diagram of a control unit of the drive recorder of the third embodiment; FIG. 11 is a functional block diagram of a control device of the latent accident recording device of the third embodiment; 10 is a flow chart showing a weighting procedure according to the third embodiment; FIG. 14 is a functional block diagram of a control unit of the drive recorder of the fourth embodiment; It is a functional block diagram which shows the potential accident memory|storage part of other embodiment.

[First Embodiment]
[overview]
A first embodiment for carrying out the present invention will be described with reference to the drawings. This embodiment is a latent accident recording system in which latent accident information collected by a drive recorder installed in a certain vehicle is made available, that is, shared by drive recorders installed in other vehicles. A potential accident is a situation in which an accident could have occurred, although it did not lead to an accident. So-called near misses and near misses are included in latent accidents.

As shown in FIG. 1, the potential accident recording system S has a drive recorder 100 and a potential accident recording device 200 connected via a network N. As shown in FIG. The drive recorder 100 is a device that captures images of the exterior of vehicles C1, C2, C3, .

As a recording medium, a removable medium such as a memory card M is used. For example, drive recorders 100 are installed in a plurality of vehicles C for providing services of transportation companies, taxi companies, and the like. Identification information for identifying the driver or the vehicle C is recorded in the memory card M. FIG. Furthermore, the memory card M records a flag for distinguishing whether or not the latent accident information is shared. Sharing latent accident information means recording latent accident information, reading recorded latent accident information, transmitting recorded latent accident information, and writing recorded latent accident information to another recording medium. including at least one of Not sharing latent accident information means not recording latent accident information, not reading recorded latent accident information, not transmitting recorded latent accident information, and not transmitting recorded latent accident information to other recording media. including at least one of not writing to The flag of this embodiment is a flag for distinguishing whether or not to record latent accident information. The memory card M may be a removable recording medium, and various media such as an SD card and a micro SD card can be used.

The latent accident recording device 200 is a device that reads information recorded in the memory card M of each drive recorder 100, creates a database, and records the information. The potential accident recording device 200 is configured by a computer such as a PC, server, tablet, and smart phone. The latent accident recording device 200 is used by a subject who manages the whole or part of the latent accident recording system S. FIG. For example, latent accident information from each drive recorder 100 is collected in the latent accident recording device 200, and based on this, an operator OP of a service providing organization such as a transportation company or a taxi company assists each driver in safe driving. do.

As the network N, various communication networks available now or in the future, such as the Internet and dedicated communication networks, can be applied. For example, the drive recorder 100 is connected to the network N by tethering using Wi-Fi (registered trademark), Bluetooth (registered trademark), USB, or the like via an information communication terminal T such as a smart phone or wearable device. An information communication terminal T such as a smart phone or wearable device can also be used as an information input device to the drive recorder 100 . The latent accident recording device 200 is connected to the network N via a communication device such as a router.

[drive recorder]
[External configuration]
An external configuration of the drive recorder 100 of the present embodiment will be described with reference to FIGS. 2 to 5. FIG. 2 is a front side perspective view, FIG. 3 is a back side perspective view, FIG. 4 is a bottom side perspective view, and FIG. 5 is a perspective view showing an installation example in a vehicle. In this specification, the z-axis direction shown in the drawings is referred to as "upper side", and the opposite direction is referred to as "lower side". "Bottom" is also referred to as "bottom" in describing the configuration of each member. The z-axis direction may also be referred to as the vertical axis direction. The y-axis direction shown in FIG. 2 is the front side, and the opposite side is the rear side. The front side may be called the front side, and the back side may be called the rear side. “Upper”, “lower”, “front side”, “back side”, “front”, and “back” refer to the positional relationship of each configuration when the drive recorder 100 is installed in a normal manner (Fig. 5).

An external configuration of the drive recorder 100 will be described. The drive recorder 100 has a main body 101, a bracket 102, a camera 103, a display 104, a button 105, a lamp 106, an audio output port 107, a memory card storage section 108, and an audio input port 109, as shown in FIGS. .

The main body 101 is a substantially rectangular parallelepiped housing. The bracket 102 is a member that attaches the main body 101 to the vehicle. Camera 103 is a device that captures an image of the exterior of the vehicle. A lens of the camera 103 is provided on the front side of the main body 101 . One end of the bracket 102 is attached to the top of the main body 101, and the other end is attached to a predetermined position in the windshield FG of the vehicle via double-sided tape or the like so that the lens of the camera 103 faces the front of the vehicle. (See FIG. 5). In addition, power is supplied from the vehicle to the drive recorder 100 by being connected to the cigarette lighter socket of the vehicle via the power cable L. Note that the installation position of the drive recorder 100 may be on the dashboard.

The display 104 is provided on the back side of the main body 101 and is a display device such as liquid crystal for displaying various information. The display 104 may be configured integrally with a touch panel. A button 105 is a switch for inputting various instructions by pressing. The lamp 106 is a member that displays various information by emitting light. The audio output port 107 is an opening for outputting audio from a speaker 114, which will be described later. As shown in FIG. 4, the memory card accommodating portion 108 is a slit-shaped slot provided in the lower portion of the main body 101, and the memory card M is inserted into and removed from the slot. The voice input port 109 is an opening for inputting voice to a microphone 115, which will be described later.

[Internal configuration]
Next, the internal hardware configuration of the drive recorder 100 will be described with reference to the block diagram of FIG. In addition to the camera 103, the display 104, the button 105, the lamp 106, and the memory card storage unit 108, the drive recorder 100 includes an acceleration sensor 110, a GPS receiver 111, a clock 112, a temporary memory 113, a speaker 114, a microphone 115, It has a memory card interface 116 and a control unit 120 .

The camera 103 is an input device having an optical member such as a lens, and an image sensor such as a CMOS or CCD, which is a light receiving element. Since the camera 103 is installed as described above, it can capture an image in front of the vehicle. In addition, you may have a camera which images the image|video in a vehicle.

The display 104 is an output device that displays moving images and still images. The display 104 displays information such as images captured by the camera 103, setting screens of the drive recorder 100, guidance information, and warnings in a predetermined layout. The display 104 can display a live view image that displays an image captured by the camera 103 in real time, and can also reproduce an image recorded on the memory card M. FIG.

The button 105 is an input device for a user such as a driver to input desired instructions to the drive recorder 100 . A button 105 can be used to select a menu displayed on the display 104 and to input instructions such as information recording and erasing. For example, the button 105 and the touch panel function as input units for the user to input instructions to record the occurrence of potential accidents and to erase the recorded potential accident information. Although not shown, a remote controller for remotely controlling the drive recorder 100 via infrared rays also functions as an input unit.

The lamp 106 is an output device that informs the user of specific information by continuously emitting light, extinguishing, blinking, or the like. A light-emitting LED is used as the lamp 106 . The lamp 106 can, for example, emit light to indicate power-on, warning, or the like. The memory card accommodating portion 108 is a recording medium accommodating portion that accommodates the memory card M. As shown in FIG. The memory card accommodation unit 108 establishes electrical connection between the accommodated memory card M and the drive recorder 100 .

The acceleration sensor 110 is a sensor that detects the acceleration of the drive recorder 100 or an installation target. The acceleration sensor 110 of this embodiment uses a 3G sensor that detects acceleration in three axial directions of the x-axis, the y-axis, and the z-axis. From the acceleration detected by the acceleration sensor 110, it is possible to determine the impact applied to the vehicle equipped with the drive recorder 100, the movement of the vehicle such as sudden acceleration or deceleration, vibration during idling, and the like.

The GPS receiver 111 is a position detector that receives radio waves from GPS satellites and detects the current position of the vehicle based on the distance from the GPS satellites and the position of the GPS satellites. The clock 112 is a device that measures and outputs the date and time. A clock 112 outputs the date and time of recording of video data, occurrence of a latent accident, and the like. The temporary memory 113 is a cache memory that temporarily holds electrical signals obtained by converting light received by the image sensor of the camera 103 .

The speaker 114 is an output device that notifies the user of specific information by voice. The microphone 115 is an input device that converts the sound inside the vehicle equipped with the drive recorder 100 into an electric signal and inputs the electric signal. Voice includes sounds, voices of living things, and the like. The memory card interface 116 is an interface for writing data to and reading data from the memory card M accommodated in the memory card accommodating unit 108, formatting the memory card M, and the like.

The display 104, the lamp 106, and the speaker 114 are, as will be described later, a notification unit that issues a warning when the vehicle equipped with the drive recorder 100, that is, the own vehicle, approaches the position of the potential accident information.

The control unit 120 controls the operation of each unit of the drive recorder 100 . The control unit 120 is a so-called computer mainly composed of a processor, which is a central processing unit, and equipped with various memories, input/output interfaces, and the like. The processor performs arithmetic processing for information input, storage, output, etc. and control processing for peripheral devices according to the main program.

Memory includes EEPROM and RAM. The EEPROM is a writable nonvolatile memory that stores programs, data, and settings for performing various processes for the processor to control each part. A RAM is a memory that functions as a work area or the like when a processor performs processing. The input/output interface converts information input/output between the processor and the outside.

Furthermore, the drive recorder 100 is provided with a gyro sensor 117 , an in-vehicle CAN signal port 118 , and a communication section 119 . The gyro sensor 117 is a sensor that detects the angular velocity of the drive recorder 100 or an installation target. The in-vehicle CAN signal port 118 is a vehicle information acquisition unit that acquires various kinds of information such as OBD-II for the self-diagnostic function of the ECU of the vehicle. The in-vehicle CAN signal port 118 is connected, for example, to the vehicle's OBD-II connector via an adapter cable. The vehicle information includes vehicle speed, accelerator opening, brake opening, blinker operation, and steering angle of the steering wheel. When the in-vehicle CAN signal port 118 is connected to the vehicle, power can be supplied without using the power cable L connected to the main body 101 . The communication unit 119 is a processing unit that transmits and receives information to and from the outside. The communication unit 119 is connected to the network N by tethering using Wi-Fi (registered trademark), Bluetooth (registered trademark), USB, or the like via the information communication terminal T, for example, and communicates with the latent accident recording device 200. It is a communication module that transmits and receives information with As the communication unit 119, for example, it is also possible to use a communication module that can connect to the network N without the information communication terminal T by having a connection function with a base station according to communication standards such as 3G and 4G. can.

(Each processing unit of the control unit)
The control unit 120 functions as various processing units by the processor reading and executing various programs, data, and various settings stored in the memory. The present invention can also be grasped as a computer-readable storage medium recording such a program and such a program. In the following description, block diagrams showing functions of respective processing units by blocks are used. Programs, data, and settings include cases where they are recorded on the memory card M.

As shown in FIG. 7, the control unit 120 includes a video recording unit 21, a detection unit 22, a voice recognition unit 23, an image recognition unit 24, a potential accident recording unit 25, a position determination unit 26, a warning output unit 27, and a flag recognition unit. 28 and a running state recording unit 29 .

The video recording unit 21 continuously records video data, which is a moving image captured by the camera 103, in the memory card M. FIG. Continuous recording means continuous recording for a predetermined time, and is also called constant recording. For example, recording is performed continuously from the start of the engine to the stop of the engine. In other words, recording is performed continuously while power is supplied to the drive recorder 100 . However, when recording a latent accident, which will be described later, recording may be temporarily interrupted and then resumed. Note that the video recording unit 21 should record at least video data, but in this embodiment, the audio signal input from the microphone 115 at the time of imaging by the camera 103 is also continued in the memory card M as audio data together with the video data. to record.

More specifically, the video recording unit 21 records video data captured by the camera 103 and audio data input from the microphone 115 from the temporary memory 113 to the memory card M via the memory card interface 116 . At this time, as shown in FIG. 8, video data and audio data at fixed time intervals are created as one file, and the file is recorded in a predetermined storage area of the memory card M. FIG. In the example of FIG. 8, one file is 60 seconds. When the free space of the predetermined storage area of the memory card M is insufficient, the storage area in which the oldest file was recorded is sequentially overwritten with the newest file and recorded.

The detection unit 22 detects the occurrence of a latent accident. Occurrence of a latent accident can be detected by various methods. Detection by the detection unit 22 is triggered when various occurrence conditions recorded in memory as presets are satisfied. For example, the detection unit 22, if the input measurement value exceeds various set threshold values, if it is less than the threshold value, if it is within or outside the range of the upper and lower threshold values, Detect potential accidents. These threshold values may be set in the memory by default, or may be input by operating the button 105 or the like while the user is viewing the setting screen. Further, the occurrence condition can be updated, added, changed, deleted, etc. when updating the program.

The voice recognition unit 23 recognizes the volume, frequency, etc. of the voice input from the microphone 115 . Recognizing volume, frequency, etc. means analyzing and specifying volume and frequency. The image recognition unit 24 recognizes the position, shape, color, and the like of a specific target in video data captured by the camera 103 . Recognizing the position, shape, color, etc. means analyzing and specifying the position, shape, color, etc. FIG.

In order to detect a latent accident by the detection unit 22, the recognition result by the voice recognition unit 23 and the image recognition unit 24, the acceleration sensor 110, the GPS receiver 111, the wearable device, the gyro sensor 117, and the in-vehicle CAN signal port 118. A measured value or the like can be used. Examples of detection of latent accidents based on these information and occurrence conditions are as follows.

Impact: When the value of the acceleration sensor exceeds the threshold Velocity: Velocity calculated based on GPS signals, velocity acquired by the in-vehicle CAN signal port 118 (for example, as shown in vehicle C2 in FIG. 1, If the speed exceeds the threshold, it is detected as a potential accident.)
Sudden acceleration/sudden deceleration: When the value of the acceleration sensor exceeds the threshold value (for example, as shown in the vehicle C1 in FIG. , is detected as a latent accident.)
Sharp steering: When the value of the gyro sensor exceeds the threshold Idle: When the speed is stopped below the threshold and the vibration detected by the accelerometer exceeds the threshold Loud sound: Detected by the microphone the volume exceeds the threshold

Furthermore, the following generation conditions can also be set.
(a) When the volume and frequency of the voice recognized by the voice recognition unit 23 exceed thresholds, when the volume and frequency are within the upper and lower limits of predetermined thresholds, etc., the detection unit 22 is detected as a latent accident. For example, a latent accident is detected by recognizing screams and shouts as human voices, and squealing tires, ABS operating sounds, crash sounds, and horn sounds as human sounds.

(b) Recognizing the distance between the lane and the own vehicle from the image recognized by the image recognition unit 24, and if the amount of deviation exceeds the threshold value, the distance to the preceding vehicle is determined to be less than the threshold value. If so, it will be detected as a potential accident.

(c) Based on the signals from the wearable device, the detection unit 22 detects a latent accident when the values indicated by these signals exceed a threshold value. For example, when the values of pulse, blood pressure, etc. from sensors provided in the wearable device exceed threshold values, it is detected as a latent accident.

(d) The detection unit 22 also detects a latent accident when there is an instruction input by the user. Modes of instruction input include, for example, operation of the button 105 or the touch panel, instruction input from a remote controller, instruction input from a smart phone or wearable device, and the like. It should be noted that the function equivalent to the instruction input can also be exhibited by the user intentionally speaking loudly or vibrating the main body 101 . For example, even if the driver recognizes a dangerous obstacle, it can be used when the driving condition of the vehicle is normal.

(e) Of the signals from the acceleration sensor 110, the detection unit 22 evaluates the acceleration in the vertical axis direction relatively lower than the acceleration in the other axis directions to detect potential accidents. Evaluating relatively low means making the influence of acceleration in the direction of the vertical axis on the detection of a potential accident lower than the influence of acceleration in the directions of other axes on the detection of a potential accident. The direction of the vertical axis is the direction along the z-axis, and the downward direction when the drive recorder 100 is installed horizontally is the direction of gravity. This can be realized by making the determination by excluding the acceleration in the vertical direction, setting the threshold of the acceleration in the vertical direction to be higher than the thresholds in the other axial directions, or the like. For example, as shown in vehicle C3 in FIG. 1, vibration in the vertical axis direction due to road bumps and holes may exceed the threshold even if it is not a latent accident, and even in such cases, it is recorded as latent accident information. put away. Therefore, by eliminating or increasing the threshold value of the signal in the vertical direction among the signals from the acceleration sensor 110 in the three axial directions, it is possible to eliminate the recording of non-latent accident information as a latent accident.

The latent accident recording unit 25 includes, when the detecting unit 22 detects a latent accident, information distinguishing the image data before and after the occurrence of the latent accident from the image data recorded by the image recording unit 21, and position information. Record potential accident information. The information that is distinguished from the video data recorded by the video recording unit 21 may be a copy of the video data before and after the occurrence of the latent accident, or data with identification information that gives a delimiter before and after the occurrence of the latent accident. may be In this embodiment, when a latent accident is detected, the latent accident recording unit 25 records video data from a predetermined time before the detection to a predetermined time after the detection by the video recording unit 21. Copy and store from video data. The predetermined time is, for example, about one and a half to two minutes. The cause of the accident is based on verification that it was caused in the minutes before the accident rather than after it occurred. The location information is vehicle location information detected by the GPS receiver 111 . The latent accident information may include at least information distinct from the video data recorded by the video recording unit 21 and position information. Also includes That is, it includes a copy of the audio data corresponding to the video data before and after the occurrence of the latent accident, or the data attached with the identification information giving a delimiter before and after the occurrence of the latent accident.

More specifically, as shown in FIG. 8, another file is created by using the file at the time of occurrence of the latent accident among the files created by video recording. For example, if a latent accident occurs at time (ta) 40 seconds after the start time (t0) of the file created during video recording, the latent accident recording unit 25 records the latent accident occurrence 20 seconds from 60 seconds before t0. Video data for the period from t0-60 seconds to ta+20 seconds is created as one file, and the file is recorded in a predetermined storage area of the memory card M. FIG. Also, if a latent accident occurs at time (tb) 20 seconds before the start time (t0) of the file created during video recording, the latent accident recording unit 25 records the event 20 seconds after 120 seconds before t0. A video image for the period from t0-120 seconds to tb+20 seconds is created as one file, and the file is recorded in a predetermined storage area of the memory card M. FIG.

In this way, the latent accident is recorded at least for a time length in which there are a plurality of video recording units. In this example, by recording the latent accident so that it has a time length of at least two files, it is possible to secure a video of one and a half to two minutes before the occurrence of the latent accident. Conventionally, only one file was recorded before the occurrence of a latent accident, but in this embodiment, recording multiple files increases the possibility of being useful in investigating the cause of an accident. The latent accident information file is recorded in a storage area different from the storage area of the memory card M in which the video recording file is stored. Note that the time length of each file is not limited to the lengths exemplified above.

It should be noted that detection of a potential accident by the detection unit 22 includes the case where the user inputs an instruction from the input unit as described above. In other words, the potential accident information can be recorded in the potential accident recording unit 25 by inputting an instruction from the user. Modes of instruction input include, for example, operation of the button 105 or touch panel, operation input from a remote controller, instruction input from a smart phone or wearable device, and the like. When such an input is received, the detection unit 22 outputs a command prompting the latent accident recording unit 25 to record the latent accident.
The latent accident recording unit 25 can also erase latent accident information. The mode of inputting instructions is the same as inputting instructions for recording latent accident information.

The position determination unit 26 determines that the current position detected by the GPS receiver 111 has approached the position indicated by the position information included in the latent accident information. Approaching means that the distance between the current position of the vehicle and the position of the potential accident is within a predetermined distance.

The warning output unit 27 outputs a warning when the position determination unit 26 determines that the current position of the vehicle has approached the position indicated by the position information included in the latent accident information. The warning is notified to the user by the screen display of the display 104, the light emission or blinking of the lamp 106, the sound of the speaker 114, or the like. That is, the warning output unit 27 outputs a signal corresponding to each notification unit. For example, as shown in FIG. 9, the display screen of the display 104 displays characters such as "300 m ahead, near-miss point, be careful when driving" and symbols such as "!" Let

By recognizing the flag recorded in the memory card M, the flag recognition unit 28 determines whether or not the latent accident recording unit 25 records the latent accident. In the memory card M, as shown in FIG. 1, a flag is recorded for distinguishing whether or not to record latent accident information. The flag here is identification information for determining whether or not to record latent accident information. Recognizing the flag means determining whether or not the flag is set. For example, if the flag is set to "1", the latent accident information is not recorded, but if the flag is set to "0", the latent accident information is recorded. However, it is free to assign any state of the flag to record or not to record. Moreover, since the flag may be any information that can distinguish between recording and non-recording, its expression format does not matter.

When the flag recognizing unit 28 determines not to record latent accident information, the latent accident recording unit 25 does not record latent accident information. When the flag recognizing unit 28 determines to record latent accident information, the latent accident recording unit 25 records the latent accident information as described above.

The running state recording unit 29 records the running state of the vehicle in the memory of the control unit 120 and the memory card M. FIG. The running state of the vehicle is information acquired while the vehicle is running. For example, information such as recognition results by the voice recognition unit 23 and image recognition unit 24, acceleration sensor 110, GPS receiver 111, gyro sensor 117, in-vehicle CAN signal port 118, and measurement values acquired by wearable devices are recorded. The running state recording unit 29 selectively records all of these information or preset information.

(Potential accident recording device)
The potential accident recording device 200 has an input device 210, a display device 220, a card reader 230, and a control device 240, as shown in FIG. The input device 210 is a device for inputting various kinds of information necessary for the latent accident recording device 200 . The input device 210 includes a touch panel, keyboard, and mouse. The display device 220 is an output device that displays various information necessary for the latent accident recording device 200 . The touch panel also includes one configured in the display device 220 .

The card reader 230 is a device to which the memory card M is attached and which inputs/outputs information to/from the memory card M. FIG. The card reader 230 is a reading unit that reads video data, potential accident information, identification information, flags, and driving conditions from the memory card M, and a writing unit that writes video data, potential accident information, identification information, flags, and driving conditions to the memory card M. functions as a department. For example, the card reader 230 writes latent accident information in the memory card M of the drive recorder 100 of a certain vehicle to the memory card M of the drive recorder 100 of another vehicle. In other words, the latent accident information of drivers of different vehicles can be used mutually.

The control device 240 is a computer mainly composed of a processor, which is a central processing unit, and equipped with a recording medium such as a ROM, a RAM, a hard disk, and an SSD, an input/output interface, and the like. Functions as a processing unit. The present invention can also be grasped as a computer-readable recording medium recording such a program and such a program. In the following description, block diagrams showing the functions of each processing unit as blocks are used.

The control device 240 has a communication section 40, a video recording section 41, a latent accident recording section 42, a running state recording section 43, an evaluation section 44, and a flag adding section 45, as shown in FIG. The communication unit 40 transmits and receives information to and from each drive recorder 100 via the network N. The video recording unit 41 stores the video data read from the card reader 230 and recorded in the memory card M in a recording medium such as a hard disk or an SSD as a database.

The latent accident recording unit 42 records the latent accident information recorded in the memory card M read by the card reader 230 as a database in a recording medium such as a hard disk or an SSD. The database includes identification information and flags assigned to each memory card M or each latent accident information. Note that since the flag is set, no latent accident information is read from the memory card M in which no latent accident information is recorded. Further, the running state recording unit 43 records the running state recorded in the memory card M as a database in a recording medium such as a hard disk or an SSD.

The evaluation unit 44 evaluates the running state of the vehicle. The evaluation of driving conditions was obtained by the frequency of potential accident information, recognition results by the voice recognition unit 23 and image recognition unit 24, the acceleration sensor 110, the GPS receiver 111, the gyro sensor 117, the in-vehicle CAN signal port 118, and the wearable device. It can be performed based on measured values or the like. The evaluation is performed by giving points, which are numerical values corresponding to the quality of the running condition. For example, if the number of times of latent accident information within a predetermined period exceeds a threshold, the points are lowered, and if the number is below the threshold, the points are raised. If the number of times of sudden braking within a predetermined period exceeds the threshold, the points are lowered, and if the number is below the threshold, the points are raised. If the speed is less than or equal to the threshold, the points are increased, and if the speed exceeds the threshold frequently, the points are decreased. Points are increased when the difference between the speed limit and the actual speed is equal to or less than the threshold, and decreased when the difference exceeds the threshold. By performing such an evaluation by the evaluation unit 44 for each memory card M of the drive recorder 100, it is possible to distinguish whether the driver is good or not. For example, if the points are high, it can be distinguished as excellent, and if the points are low, it can be distinguished as not excellent.

The flagging section 45 gives the memory card M a flag. The addition of flags by the flag addition unit 45 is performed according to the running state of the vehicle. According to the running state of the vehicle follows the evaluation of the evaluation unit 44 . For example, if the point value, which is the evaluation by the evaluation unit 44, is lower than a threshold value, a flag is set, and if the value is equal to or higher than the threshold value, the flag is dropped. In the initial state, the flags of each memory card M are turned off, and flags are added according to the driving conditions of each driver during a predetermined period of time. It is also possible for the unit 45 to add a flag. In other words, the flag can be given at the stage where the running state is accumulated to some extent and the evaluation is made by the evaluation unit 44 . If the flag is set, the subsequent potential accident information may not be recorded. , the flag adding unit 45 can drop the flag.

Further, the flag adding unit 45 can also add a flag according to an input from the input device 210 of the operator OP. For example, when the operator OP determines that the latent accident information of a specific vehicle or driver should not be used by other drivers based on the running state of the vehicle, the input device 210 is operated to set a flag. When it is determined that another driver should use it, the input device 210 is operated to clear the flag. For example, the operator OP can make a judgment similar to the evaluation by the evaluation unit 44 as described above, and decide to assign a flag. When the operator OP performs the evaluation, he/she can judge that the evaluation by the evaluation unit 44 is difficult by looking at the video data displayed on the display device 220 . For example, even if a driver does not hit the brakes suddenly, if he or she speeds up at a yellow light and rushes into an intersection, the evaluation can be lowered and a flag can be set.

[motion]
The processing procedure of this embodiment as described above will be described with reference to the flowcharts of FIGS. 11 and 12 in addition to the above drawings.
(Addition of flag)
A procedure for assigning flags by the latent accident recording device 200 will be described. As shown in FIG. 11, after the driver of each vehicle has finished driving, first, he takes out the memory card M from the drive recorder 100 and hands it over to the operator OP. The operator OP inserts the memory card M into the card reader 230 so that information can be read and written (step 101).

The operator OP operates the input device 210 to read out the video data, latent accident information, identification information, and driving conditions recorded in each memory card M, and records them in a database of the recording medium of the latent accident recording device 200. (Step 102).

The evaluation unit 44 evaluates the running state of each vehicle (step 103). For example, points, which are numerical values according to the quality of the running condition, are given. If the evaluation point is greater than the threshold value (YES in step 104), the flag adding section 45 removes the flag (step 105). If the evaluation points are less than or equal to the threshold (NO in step 104), a flag is set (step 106).

As described above, the operator OP may determine whether or not each driver's latent accident information is worthy of being used by other drivers. That is, when the operator OP evaluates and determines that the latent accident information should not be read, the input device 210 is operated to set a flag. When it is determined that reading should be performed, the input device 210 is operated to clear the flag.

(Collection and notification of potential accident information)
Next, procedures for collecting and notifying latent accident information by the drive recorder 100 will be described. As shown in FIG. 12, the drive recorder 100 is powered on when the engine is started (step 201), and recording of video data to the memory card M by the video recording section 21 is started (step 202). The image recording unit 21 continues recording image data, and the detection unit 22 waits for the occurrence of a latent accident (NO in step 203).

If the detection unit 22 detects a latent accident (YES in step 203), the flag recognition unit 28 recognizes whether or not the flag is set (step 204). If the flag is set (YES in step 204), the latent accident recording unit 25 does not record the latent accident (step 205). If the flag is not set (NO in step 204), the latent accident recording unit 25 records the latent accident on the memory card M separately from the video data (step 206).

If the latent accident information is recorded, the position determination unit 26 detects that the current position detected by the GPS receiver 111 has approached the position indicated by the position information included in the latent accident information while the vehicle is running. (YES in step 207), the warning output unit 27 outputs a warning, and the warning is displayed on the display 104 or the like (step 208). If the current position does not approach the position of the latent accident information or if the latent accident information is not recorded (NO in step 207), no warning is given. The above processing is performed until the engine is stopped (NO in step 209). When the engine is stopped and the power is turned off (YES in step 209), recording of video data is stopped (step 210).

[Effect]
(1) The drive recorder 100 of the present embodiment includes a camera 103 installed in a vehicle, a memory card housing section 108, a video recording section 21 for recording video data captured by the camera 103 in a memory card M, a latent A detection unit 22 that detects the occurrence of an accident, and information that, when the detection unit 22 detects the occurrence of a potential accident, distinguishes video data before and after the occurrence of the potential accident from video data recorded by the video recording unit. , and a latent accident recording unit 25 for recording latent accident information including positional information in a memory card M. The memory card M has a flag for distinguishing whether or not to share the latent accident information. By recognizing the recorded flag, the latent accident recording unit 25 has a flag recognizing unit 28 that determines whether or not to share the latent accident.

Therefore, the flag recorded in the memory card M of each drive recorder 100 can be set so that latent accident information is not recorded. Therefore, when a plurality of drivers share latent accident information via the memory card M, unnecessary latent accident information can be eliminated in advance. Therefore, there is no need to bother other drivers with unnecessary latent accident information, and the capacity of the storage medium can be saved. Since it is possible to determine whether or not latent accident information is recorded by the flag, difficult determination processing becomes unnecessary, and the processing load on the drive recorder 100 can be reduced.

(2) It has an input unit for inputting an instruction for occurrence of a latent accident. Therefore, the latent accident information that each driver deems necessary can be included in the latent accident information used by other drivers. Therefore, latent accident information that does not appear in the running state of the vehicle can be recorded. Such instruction input can be effective only when the latent accident information is to be recorded because the flag is turned off. Instead, it is also possible to set the latent accident information to be recorded with priority given to the instruction input by the input unit.

(3) It has an input unit for inputting an instruction to erase potential accident information. Therefore, it is possible to exclude latent accident information that each driver clearly determines to be unnecessary from the latent accident information used by other drivers, thereby preventing other drivers from being warned.

(4) Of the signals from the acceleration sensor 110, the detection unit 22 evaluates the acceleration in the vertical axis direction lower than the acceleration in the other axis directions to detect the occurrence of a latent accident. Therefore, it is possible to prevent unnecessary latent accident information from being recognized as a latent accident simply by traveling over bumps or potholes on the road.

(5) The potential accident recording device 200 of the present embodiment sets a flag for distinguishing whether or not to share potential accident information in the memory card M in which the video data captured by the camera 103 of the drive recorder 100 is recorded. It has a flag giving unit 45 to give.

For this reason, at the discretion of the operator OP, each driver is compared, and the memory card M of the drive recorder 100 of the driver who is considered to be able to obtain only unnecessary latent accident information is flagged so as not to record the latent accident information. A flag can be dropped to record potential accident information in the memory card M of the driver's drive recorder 100, which can be used to obtain useful potential accident information.

(6) It has an evaluation unit 44 that evaluates the running state of the vehicle, and the flag giving unit 45 gives a flag to the memory card M according to the evaluation of the evaluation unit 44 . For this reason, the operator OP evaluates each driver without making judgments, and does not record latent accident information in the memory card M of the drive recorder 100 of the driver from whom only unnecessary latent accident information can be obtained. Latent accident information can be recorded in the memory card M of the driver's drive recorder 100 from which the accident information can be obtained.

[Second embodiment]
[composition]
A second embodiment of the present invention will be described with reference to the drawings. The same reference numerals are assigned to the same configurations as in the first embodiment, and the description thereof is omitted. In the present embodiment, as shown in FIG. 13, the control section 120 of the drive recorder 100 has an evaluation section 31 and a flag provision section 32 .

The evaluation unit 31 evaluates the running state of the vehicle, like the evaluation unit 44 of the first embodiment. The flagging section 32 gives a flag to the memory card M, like the flagging section 45 of the first embodiment. For example, if the evaluation point of the evaluation unit 31 for the running state of the own vehicle is lower than the threshold value, a flag is set, and if the point is equal to or higher than the threshold value, the flag is dropped. Note that the flag giving section 32 can also give a flag according to an input from the driver's input section.

[Effect]
This embodiment has a flag adding unit 32 that adds a flag according to information indicating the running state of the vehicle equipped with the drive recorder 100 . Therefore, when the evaluation of the driving state of oneself is low, it is not used as potential accident information for other drivers.

[Third embodiment]
[composition]
A third embodiment of the present invention will be described with reference to the drawings. Configurations similar to those of the first and second embodiments are denoted by the same reference numerals, and descriptions thereof are omitted. In this embodiment, memory cards M are weighted for each memory card M or for each latent accident information. Weighting is done numerically. For example, the higher the number, the higher the weighting, and the lower the number, the lower the weighting.

As shown in FIG. 14, the control unit 120 of the drive recorder 100 has a weight recognition unit 33 that determines whether the warning output unit 27 outputs a warning according to the weight. Recognition of weighting means judging whether the weighting value is large or small by comparison with a threshold value. If the weighting is equal to or less than the threshold, the weighting recognizer 33 determines not to output a warning. If the weighting is greater than the threshold, the weighting recognizer 33 decides to output a warning.

The control device 240 of the latent accident recording device 200 has a weighting section 52 as shown in FIG. The weighting unit 52 weights each memory card M or each latent accident information. Weighting is performed according to the running state of the vehicle. For example, in the case of latent accident information of the same position and same content, the smaller the number of occurrences, the lighter the weighting, and the larger the number of occurrences, the heavier the weighting. Heavy weighting is applied to a sudden brake stepped on by a driver whose frequency of sudden braking is equal to or less than the threshold.

Also, the weighting unit 52 may perform weighting based on the evaluation by the evaluation unit 44 . For example, the evaluation points of the evaluation unit 44 may be directly used as weighting values. When the evaluation point of the evaluation unit 44 for the running state of the own vehicle is lower than the threshold value, the weighting value is decremented, and when the point is equal to or higher than the threshold value, the weighting value is incremented. You may

Note that the weighting unit 52 can also give weighting according to the input from the input device 210 of the operator OP. For example, when the operator OP determines that the latent accident information of a specific vehicle or driver should not be output as a warning based on the running state of the vehicle, etc., the input device 210 is operated to lower the weighting. If it is determined that other drivers should use it, the input device 210 is operated to increase the weighting.

For example, considering the time zone, season, and area, heavy weights are given to latent accident information around the school in the morning and evening. Heavy weighting is also applied to latent accident information on points that freeze in winter. Such locations may be registered as latent accident information by default.

[motion]
The warning processing procedure according to the weighting of the present embodiment as described above will be described with reference to the flowchart of FIG. 16 . The processing procedures of steps 301 to 306, steps 310 and 311 are the same as steps 201 to 206 and steps 209 and 210 of the flow chart of FIG. 12, so description thereof will be omitted.

That is, when the position determination unit 26 determines that the current position detected by the GPS receiver 111 has approached the position indicated by the position information included in the latent accident information while the vehicle is running (YES in step 307). , the weighting recognition unit 33 recognizes the weighting value (step 308). If the weighting is equal to or less than the threshold value (YES in step 308), the weighting recognition section 33 determines not to output a warning, so the warning output section 27 does not output a warning. If the weighting is greater than the threshold (NO in step 308), the weighting recognition section 33 determines to output a warning, so the warning output section 27 outputs a warning (step 309).

[Effect]
In this embodiment, no warning is output for latent accident information with a low weighting value, so the driver is not bothered by unnecessary warnings. Moreover, by using the evaluation of the evaluation unit 44, unnecessary warnings can be eliminated without the operator OP's judgment. In this embodiment, the control unit 120 has the flag recognition unit 28 and the control device 240 has the flag addition unit 45, but the flag recognition unit 28 and the flag addition unit 45 may be omitted.

[Fourth embodiment]
[composition]
A fourth embodiment of the present invention will be described with reference to the drawings. Configurations similar to those of the second and third embodiments are denoted by the same reference numerals, and descriptions thereof are omitted. In this embodiment, as shown in FIG. 17, the control section 120 of the drive recorder 100 has a weighting section . The weighting section 34 is the same as the weighting section 52 of the third embodiment. That is, in the present embodiment, the drive recorder 100 can weight each piece of potential accident information.

[Effect]
In this embodiment, in the same drive recorder 100, the weighting unit 34 weights each piece of latent accident information, so the collected latent accident information is sorted into useful information and unnecessary information, and a useful warning is given. Can receive. In this embodiment, the control unit 120 may or may not have the flag recognition unit 28 and the control device 240 may have the flag addition unit 45 .

[Fifth embodiment]
[composition]
A fifth embodiment of the present invention will be described. This embodiment is basically the same as the first embodiment. In this embodiment, the control section 120 of the drive recorder 100 does not have the flag recognition section 28 . Further, in the present embodiment, the flag adding section 45 adds a flag to the memory card M, as in the first embodiment. However, the flag in this embodiment is identification information for determining whether or not to read latent accident information. This flag may be called a read flag. Further, similarly to the first embodiment, the flag giving unit 45 can also give a flag according to the input from the input device 210 of the operator OP.

[Effect]
In the present embodiment as described above, the card reader 230, which is a reading unit, reads latent accident information when the flag attached to the memory card M is off, and when the flag is set, the latent accident information is read. Do not read accident information. Therefore, it is possible to eliminate unnecessary latent accident information from being stored in a database.

[Sixth embodiment]
[composition]
A sixth embodiment of the present invention will be described. This embodiment is basically the same as the first embodiment. In this embodiment, the control section 120 of the drive recorder 100 does not have the flag recognition section 28 . Further, in the present embodiment, the flag adding section 45 adds a flag to the memory card M, as in the first embodiment. However, the flag in this embodiment is identification information for determining whether or not to write latent accident information of a certain drive recorder 100 to the memory card M of another drive recorder 100 . This flag may be called a write flag. Further, similarly to the first embodiment, the flag giving unit 45 can also give a flag according to the input from the input device 210 of the operator OP.

[Effect]
In this embodiment as described above, the card reader 230, which is the writing unit, writes other latent accident information to another memory card M when the flag given to the memory card M is off, and Do not write potential accident information when is standing. Therefore, in the latent accident recording device 200, while collecting a large amount of latent accident information, unnecessary latent accident information is not written to the memory card M of each drive recorder 100. You can save storage space.

[Seventh embodiment]
[composition]
A seventh embodiment of the present invention will be described. This embodiment is basically a latent accident recording system S having the same configuration as the first embodiment. However, in this embodiment, the control section 120 of the drive recorder 100 does not have the flag recognition section 28 . Further, in the present embodiment, the flag adding section 45 adds a flag to the memory card M, as in the first embodiment. The flag in this embodiment is identification information for determining whether or not to transmit latent accident information to the drive recorder 100 and read it. This flag may be called a read flag. Furthermore, in this embodiment, the communication unit 40 receives latent accident information transmitted from each drive recorder 100 . The latent accident recording unit 42 records the latent accident information received from each drive recorder 100 as a database in a recording medium.

As in the first embodiment, the evaluation unit 44 evaluates the running state of the vehicle, and the flagging unit 45 flags latent accident information according to each drive recorder 100 . Assignment of the flag is performed according to the running state of the vehicle. As in the first embodiment, the flag adding unit 45 can also add a flag according to an input from the input device 210 of the operator OP.

The communication unit 40 transmits the received latent accident information to each drive recorder 100 . In the drive recorder 100 that receives this, the latent accident recording section 25 records it in the memory card M, and it is used for warning by the warning output section 27 in the same manner as described above. However, the latent accident information in the memory card M with the flag set is not transmitted to the drive recorder 100 .

[Effect]
In this embodiment, latent accident information can be acquired via the network N, so accurate warning based on the latest information can be realized. Further, since the latent accident information necessary for each driver is obtained and the unnecessary latent accident information is eliminated, the amount of communication and storage capacity can be reduced.

[Eighth embodiment]
[composition]
An eighth embodiment of the present invention will be described. This embodiment is basically a latent accident recording system S having the same configuration as the third embodiment. However, in this embodiment, the communication unit 40 receives latent accident information transmitted from the drive recorder 100 . The latent accident recording unit 42 records the latent accident information received from the drive recorder 100 as a database in a recording medium.

As in the third embodiment, the weighting unit 52 weights each memory card M or each latent accident information. The weighting unit 52 may perform weighting based on the evaluation by the evaluation unit 44 . The weighting unit 52 can also give weighting according to the input from the input device 210 of the operator OP.

The communication unit 40 transmits the received latent accident information to each drive recorder 100 . In the drive recorder 100 that receives this, the latent accident recording section 25 records it in the memory card M, and it is used for warning by the warning output section 27 in the same manner as described above. However, latent accident information whose weighting value is lower than the threshold value is not transmitted to the drive recorder 100 .

[Effect]
In this embodiment, necessary latent accident information for each driver is obtained, and unnecessary latent accident information is eliminated, so that the amount of communication and storage capacity can be reduced. In this embodiment, the control unit 120 of the drive recorder 100 may or may not have the flag recognition unit 28 .

[Other embodiments]
The present invention is not limited to the above embodiments, but also includes other embodiments shown below. In addition, the present invention also includes forms in which all or any of the above embodiments and other embodiments described below are combined. Further, various omissions, replacements, and modifications can be made to these embodiments without departing from the scope of the invention, and the modifications are also included in the present invention.

(1) The length of time of the latent accident video data recorded by the latent accident recording unit 25 may be different according to the running state of the vehicle. As shown in FIG. 18, the latent accident recording section 25 has a short-time mode 25a, a long-time mode 25b, and a mode switching section 25c. The short time mode 25a is a mode in which the time for recording video data before the occurrence of a latent accident is set to a short time. In the example shown in FIG. 8, if a latent accident occurs at time (tb) 20 seconds before the start time (t0) of the file, a video of the period from t0-60 seconds to tb+20 seconds is created as one file. Record. The long time mode 25b creates and records a video in the period from t0-120 seconds to tb+20 seconds as one file, as in the example shown in FIG. 8 in the first embodiment.

The mode switching unit 25c switches between the short-time mode 25a and the long-time mode 25b according to the running state of the vehicle. For example, when an ordinary latent accident occurs, recording is performed in the short-time mode 25a, and when the value of the acceleration sensor 110 exceeds the threshold value due to a very strong impact, the mode switching unit 25c switches to the long-time mode 25b. switch and record. As a result, only in the case of potential accident information with a high degree of danger, the long time mode 25b can be used to investigate the cause, and in normal times the short time mode 25a can be used to save storage capacity. This aspect may be a drive recorder 100 to which one or both of flags and weighting are not assigned.

(2) The drive recorder 100 is provided with a camera that captures images of the rear side, that is, the inside of the vehicle. may be detected. For example, when the image recognition unit 24 recognizes the driver and the driver's movement speed, movement amount, movement mode, etc. exceed threshold values, it is detected as a latent accident. As a result, staggering, deviation from the field of view of the camera, dozing off, etc. can be detected as latent accidents.

(3) Video recording and potential accident recording can be performed in a parking mode in which power continues to be supplied from the power source and recording continues even if the engine stops. In other words, video recording refers to a state in which video data is continuously recorded for a continuous period of time, and is not limited to the time the engine is running, the time the vehicle is running, or the like.

(4) When the user closes the lens of the front camera 103 or the rear camera with his/her hand and the image recognition unit 24 recognizes the black change, a function equivalent to instruction input can be exhibited. That is, the camera can be used as an input unit. Therefore, when the lens of the camera is blocked by a hand, a latent accident may be detected or erased.

(5) It is also possible to configure the drive recorder 100 in which no flag is recorded in the recording medium and no flag recognition section is provided, but each latent accident information is weighted. In this case, the weighting unit may be in the drive recorder 100 or the latent accident recording device 200 .

(6) The drive recorder 100 or the latent accident recording device 200 may be provided with an authentication section that requires password authentication in order to erase latent accident information. In that case, erasable latent accident information may be distinguished according to flags or weighting. For example, only latent accident information with a flag set, or only latent accident information with a weight lower than a threshold value, may be erased.

(7) The storage area of the video data and potential accident information of the drive recorder 100 is not limited to a removable recording medium such as a memory card M. It may be memory. For example, it may be an SSD or a hard disk. In other words, an aspect having a recording medium accommodating portion, an aspect having a recording medium accommodated in the recording medium accommodating portion, and an aspect having a recording medium provided instead of the recording medium accommodating portion are all aspects of the present invention. .

(8) Not only potential accidents, but also information on actual accidents may be included in the information to be recorded, warned and shared. However, since the number of latent accidents is larger than that of actual accident information and the latent accidents are more difficult to share, it can be said that the present invention is suitable for applying to latent accidents.

A latent accident recording device as described below is also an aspect of the present invention. Further, a latent accident recording system having the above-described drive recorder and the following latent accident recording device connected via a network is also an aspect of the present invention.

(Claim 1)
A flag adding unit that adds a flag for distinguishing whether or not to share latent accident information including video data before and after the occurrence of a latent accident and position information to a recording medium that records video data captured by a camera of a drive recorder. A latent accident recording device, characterized by comprising:

(Claim 2)
A reading unit that reads latent accident information from a recording medium that records video data captured by a camera of a drive recorder, video data before and after the occurrence of a latent accident, and latent accident information including position information; a latent accident recording device, comprising: a flag giving unit for giving a flag for distinguishing whether or not to read the latent accident information.

(Claim 3)
A document that writes the latent accident information from the recording medium of another drive recorder to a recording medium that records video data captured by the camera of the drive recorder, video data before and after the occurrence of the potential accident, and latent accident information including location information. Komebe and
a flag adding unit that adds a flag to the latent accident information for distinguishing whether or not it is written to a recording medium of another drive recorder;
A latent accident recording device, characterized by comprising:

(Claim 4)
Having an evaluation unit that evaluates the running state of the vehicle,
4. The latent accident recording device according to claim 1, wherein the flag giving section gives the flag according to the evaluation by the evaluating section.

(Claim 5)
4. The latent accident recording apparatus according to claim 1, further comprising a weighting unit that weights each recording medium or each latent accident information.

(Claim 6)
Having an evaluation unit that evaluates the running state of the vehicle,
6. The latent accident recording device according to claim 5, wherein the weighting unit gives the weighting according to the evaluation by the evaluation unit.

(Claim 7)
A communication unit connected via a network to the camera of the drive recorder installed in the vehicle,
a latent accident recording unit for recording, on the recording medium, video data before and after the occurrence of a latent accident and latent accident information including location information received by the communication unit from the drive recorder;
a flag adding unit that adds a flag to the latent accident information for distinguishing whether or not to transmit it to each drive recorder;
A latent accident recording device, characterized by comprising:

(Claim 8)
Having an evaluation unit that evaluates the running state of the vehicle,
8. The latent accident recording device according to claim 7, wherein the flag giving section gives the flag according to the evaluation by the evaluating section.

(Claim 9)
9. A latent accident recording device according to claim 7, further comprising a weighting unit for weighting the latent accident information according to the running state of the vehicle.

100 Drive recorder 101 Main unit 102 Bracket 103 Camera 104 Display 105 Button 106 Lamp 107 Audio output port 108 Memory card holder 109 Audio input port 110 Acceleration sensor 111 GPS receiver 112 Clock 113 Temporary memory 114 Speaker 115 Microphone 116 Memory card interface 117 Gyro Sensor 118 In-vehicle CAN signal port 119 Communication unit 120 Control unit 200 Potential accident recording device 21 Video recording unit 22 Detection unit 23 Voice recognition unit 24 Image recognition unit 25 Potential accident recording unit 25a Short-time mode 25b Long-time mode 25c Mode switching unit 26 Position determination unit 27 Warning output unit 28 Flag recognition unit 29 Driving state recording unit 31 Evaluation unit 32 Flagging unit 33 Weighting recognition unit 34 Weighting unit 240 Control device 40 Communication unit 41 Video recording unit 42 Potential accident recording unit 43 Driving state recording Unit 44 Evaluation unit 45 Flag giving unit 52 Weighting unit FG Windshield M Memory card S Potential accident recording system L Power cable N Network T Information communication terminal

Claims (8)

a reading unit that reads latent accident information including video data before and after the occurrence of a latent accident and position information from a recording medium recording video data captured by a camera of a drive recorder;
a writing unit that writes the latent accident information to the recording medium;
A latent accident recording device, comprising: a flag giving unit for giving each recording medium a flag for distinguishing whether or not the latent accident information is shared. 2. The latent accident recording apparatus according to claim 1, wherein the flag is a flag for distinguishing whether or not the latent accident information is read for each recording medium. 3. The latent accident recording device according to claim 1, wherein the flag is a flag for distinguishing whether or not the latent accident information is written for each recording medium of another drive recorder. a communication unit that transmits and receives information via a network to and from the drive recorder;
A flag for distinguishing whether or not to transmit to each drive recorder the latent accident information including the video data before and after the occurrence of the potential accident and the position information received by the communication unit from the drive recorder is set according to each drive recorder. a flag giving unit that gives
A latent accident recording device, characterized by comprising: 4. The flag giving unit according to claim 1, wherein the flag giving unit gives the flag in accordance with the evaluation of the running state of the vehicle by the driver during the predetermined period of driving for each of the recording media. potential accident recorder. The flag giving unit gives the flag in accordance with the evaluation of the driving state of the vehicle by the driver during a predetermined period of time from the recording medium recording the video data captured by the camera of the drive recorder, in units of the recording medium. A latent accident recording device according to claim 4, characterized in that: 7. A latent accident recording device according to claim 5, further comprising an evaluation unit for evaluating said running state. having an input device for inputting information,
8. The latent accident information recording apparatus according to claim 1, wherein said flag adding section adds said flag according to an input from said input device.

Images