JP6678863B2 - Recording device and program - Google Patents

Description

  The present invention relates to a recording device for recording an image on a vehicle and the like.

  2. Description of the Related Art Conventionally, a recording device that records an image of a vehicle has been known. For example, a drive recorder is known as a recording device that captures and records an image around a vehicle inside or outside the vehicle as an image of the vehicle (for example, see Patent Document 1). For example, when a vehicle is involved in an accident or causes an accident, the image recorded by the drive recorder is useful for determining the cause of the accident by reproducing and viewing the recorded image.

  Conventional drive recorders have an event recording function of recording video for several tens of seconds before and after the occurrence of an event such as the occurrence of a predetermined impact, but recently, due to a drop in the price of a recording medium for recording video, etc. Among those drive recorders, those having a constant recording function are increasing. For example, a drive recorder that continuously records while a vehicle is running is known. Such a drive recorder constantly records both an image at the moment when an event such as an accident occurs and other images. As a result, recording is not missed, but a large-capacity image storage memory is required. Since it is difficult to replace a new memory card when the memory capacity of the memory is full, continuous recording is performed until the capacity of the recording medium such as an SD card is almost full, and when it is full, old data is recorded. For example, the video is erased and the current video is overwritten and saved.

JP 2013-235395 A

The drawback of continuous recording is that it does not record the video at the moment when an event such as an accident occurs, but it does not need to be recorded, and overwrites and saves the recorded video. May be lost.
For example, the image at the time of the accident is overwritten while rescuing the other person, injuring the person, talking with the other person, etc. without turning off the engine at the time of the accident, or it is necessary to save the driving image of the previous day If there is, forget it and start the engine with the engine starter the next day, the previous day's image will be overwritten while idling.
The main purpose of a drive recorder is to record accidents, but if you encounter an accident and want to keep a recorded image, you must stop continuous recording or save the image separately, or the accident record will be overwritten and erased .

  Therefore, the present invention has been made in view of the problems of the conventional drive recorder and the like, and in a recording device for recording a current video by overwriting a recorded video, an event such as an accident occurs. It is an object of the present invention to provide a recording device that suppresses the possibility that the video image will be erased.

(1) A recording apparatus having a function of overwriting an image captured by a vehicle on a recorded image may have a function of suppressing the overwriting when the vehicle is in a predetermined stop state.
By doing so, it is possible to suppress the possibility that the video at the moment when an event such as an accident occurs is erased. For example, even if the power of the recording device is not turned off, it is possible to suppress the possibility that the video at the moment when an event such as an accident occurs is erased.

The image captured by the vehicle may be, for example, an image around the vehicle inside or outside the vehicle. In particular, the image outside the vehicle may be an image around the traveling vehicle. The video may be acquired from an imaging unit such as a camera installed in the vehicle, for example. In particular, the image may be an image acquired from an imaging unit installed in the vehicle interior.
This recording apparatus may be constituted by a control means such as a microcomputer, for example.

Video recording may be performed, for example, on a recording unit, and in particular, may be performed on a storage unit for digitizing and recording. The storage means may be a recording medium such as a memory card.
The recorded video may be, for example, a video that has been recorded by event recording, a video to be overwritten and a video to be recorded by event recording, and in particular, a video that has been recorded by continuous recording that continuously records video. A remarkable effect is achieved in a configuration in which the video by continuous recording is overwritten. In particular, the most remarkable effect is obtained in a configuration in which a video that is continuously recorded is overwritten on a video that has been recorded by continuous recording, in which recording is continuously performed when power is supplied to the recording device.

The predetermined stop state may be a state in which the vehicle has stopped for a predetermined time, for example, as described in (4) described later. In this manner, when the vehicle is stopped for more than the predetermined time, it is possible to suppress a possibility that the video at the moment when an event such as an accident occurs is erased.
The overwriting may be suppressed, for example, by the following (7) to (9) and (13). In particular, it is preferable to stop overwriting to suppress overwriting.

  Further, when the vehicle is not in the predetermined stop state, it is preferable to provide a state in which the suppression of the overwrite is not performed. In particular, when the vehicle is not in the predetermined stop state, the suppression of the overwrite may not be performed. . With this configuration, it is possible to more reliably record the image at the moment when an event such as an accident occurs, and to suppress the possibility that the image at the moment when the event such as an accident occurs is erased. , Both of which can be balanced with a better balance.

(2) A continuous recording function may be provided, and the overwrite recording may be performed on the recorded video of the continuous recording, and the function of suppressing the overwriting may be configured to suppress the continuous recording.
In this way, it is possible to suppress the possibility that the recorded video of the continuous recording at the moment when an event such as an accident occurs due to the continuous recording is erased.

  As the continuous recording, it is preferable to record video continuously for a certain period of time.In particular, it is preferable to record the video without having a causal relationship with the occurrence of an event, and particularly to record independently of the occurrence of an event. It is good to do. In particular, continuous recording is preferably a continuous recording in which the recording is continuously performed in principle when the power is supplied to the recording device. In this case, the recording is always performed at the moment when an event such as an accident occurs due to the continuous recording. This has a remarkable effect that the possibility that the video of the continuous recording is erased can be suppressed.

  As the continuous recording, for example, when the recording device is provided with an event recording function, it is preferable that the recording device continuously record for a longer time than the recording time by the event recording function. In this way, overwriting of the already recorded video by the continuous recording is suppressed, and the possibility that the video of the recorded continuous recording at the moment when an event such as an accident occurs can be suppressed, and the event recording function can be suppressed. In the event that the recording of the video due to the event was not recorded due to an impact that is not regarded as an event, the possibility of confirming the video at the moment of the event such as an accident by the video of the continuous recording can be increased, and the event recording function Even if video is recorded, a remarkable effect that the situation before and after an event such as an accident can be confirmed for a longer time by a video of a continuous recording recorded for a longer time than a video by the event recording. To play.

(3) It is preferable that an event recording function is provided so that recording by the event recording function can be performed while the overwriting is suppressed.
In this way, even when an event such as an accident occurs while the overwriting is suppressed, recording by the event recording function is performed, and the event such as the accident occurs more reliably. It is possible to suppress the possibility that the image at the moment is erased. In particular, since the overwriting is suppressed when the vehicle is in a predetermined stop state, when an accident occurs when the vehicle stops, it is possible to more reliably suppress the possibility that the video at the moment of the accident or the like is erased. Since an accident may occur while the vehicle is stopped, it is desirable to make recording by the event recording function.

In particular, if the video recorded by the event recording function is configured not to be overwritten, it is possible to more reliably prevent the video at the moment of an accident or the like from being erased.
As a configuration in which recording by the event recording function can be performed while overwriting is suppressed, for example, a signal from a sensor or a switch that detects an event such as various accidents is acquired, and the signal is generated when a predetermined event occurs, for example. In a case where a state in which it can be determined that the state is determined, it is preferable that the video for a predetermined time before and after the determination is made is recorded as the video by event recording. For example, when the value of the sensor exceeds a predetermined threshold value or when a switch is detected to be pressed as a trigger, the recording may be performed for the time before and after the trigger only when the trigger is issued.

(4) The predetermined stop state may include a state in which the vehicle stops for a predetermined time or more.
With this configuration, it is possible to prevent the video in the stopped state from being overwritten on the already-recorded video recorded during the traveling and from being continuously recorded. Therefore, it is possible to suppress the possibility that the image at the moment when an event such as an accident occurs is erased by the stopped image.

(5) It may be provided with a function of judging whether the vehicle may have been in an accident and, if there is a possibility of an accident, a function of suppressing the overwriting.
By doing so, it is possible to more reliably suppress the possibility that the video at the moment when an event such as an accident occurs is erased.

  The determination as to whether the vehicle may have been in an accident is made, for example, when an impact equal to or greater than a predetermined threshold value is detected, failure diagnosis information of the ECU or the like provided in the vehicle obtained from a diagnostic system or the like indicating an OBD indicates a failure. The information may be information, an operation of an airbag or the like may be detected, a video may be recognized as an image, and an image corresponding to an accident may be detected. The determination as to whether the vehicle may have been in an accident may be made, for example, in the following (6).

(6) The predetermined stop state may be configured to include that the vehicle has stopped within a predetermined time after detecting the impact.
By doing so, it is possible to more reliably suppress the possibility that the video at the moment when the accident occurs is erased. In the case of an accident, it has been found that, generally, an action of stopping the vehicle within a predetermined time is taken after detecting an impact. In particular, it is preferable that the predetermined time is a time when the operation is stopped within several tens of seconds after the impact is detected.

(7) As the suppression of the overwriting, stopping the recording, changing the recording method so as to lengthen the time until the overwriting is performed, and reducing the capacity required for recording per time by recording the video. It is preferable to have a function to perform at least one of the following: reducing the frame rate of the video to be recorded, and reducing the number of pixels of the video to be recorded.
In this way, it is possible to reduce the possibility that the video at the moment when an event such as an accident included in the recorded video has occurred is erased by overwriting.

In particular, it is preferable to save the memory used for recording the video so as to continue the recording in case of an emergency, or to perform a process of changing the length of time until the data is overwritten.
As a configuration for reducing the frame rate, in particular, video is recorded at several tens of frames / sec when not suppressed, and between several frames, for example, at several frames / sec (for example, 1 fps) when suppressed. It is advisable to change the number of frames per second so as to change the digit. The capacity required for recording per unit time of the video recording and the number of pixels of the video to be recorded may be changed to the extent that the number of digits changes.

(8) The overwriting may be suppressed so as not to be erased by overwriting.
By doing so, the video at the moment when the event such as an accident included in the recorded video does not disappear by overwriting, and the video at the moment when the event such as the accident occurs is more reliably erased. The fear can be eliminated.
As a configuration for preventing the data from being erased by overwriting, for example, the following (9) may be used.

(9) As the suppression of the overwriting, at least one of disabling overwriting, copying to an area other than the overwriting area, and moving to an area other than the overwriting area may be performed.
By doing so, it is possible to more reliably suppress the possibility that the video at the moment when an event such as an accident occurs is erased.

  As a configuration in which overwriting is prohibited, for example, a video to be recorded may be recorded as one file in a predetermined time unit, and an overwriting prohibition attribute may be added as an attribute of the file when the generation of the file is completed. As a configuration for copying to an area that is not an overwrite area, for example, a configuration may be used in which an overwritable area and an overwrite prohibited area are separated, and video data recorded in the overwritable area is copied to the overwrite prohibited area. As a configuration for moving to an area that is not an overwrite area, for example, it is preferable that an overwritable area and an overwrite prohibited area are separated, and video data recorded in the overwritable area is moved to the overwrite prohibited area. The overwritable area and the overwrite prohibited area may be, for example, different folders, different drives, or different file systems.

In particular, it is preferable that overwriting in the destination folder to be moved or copied and stored is not possible.
For example, a configuration may be provided in which a continuous recording function is provided, and at least one of copying to an area that is not an overwrite area by continuous recording or moving to an area that is not an overwrite area by continuous recording is performed to suppress the overwriting.

(10) When the vehicle enters a predetermined traveling state, the overwrite suppression may be terminated.
With this configuration, it is possible to more reliably record a video of a situation where an event such as an accident that a vehicle is running is likely to occur, and the video at the moment when the event such as an accident occurs is erased. The fear can be suppressed.

In particular, when the vehicle enters a predetermined traveling state, it is preferable to return to the recording state of the video before starting the suppression of overwriting.
The predetermined traveling state may be a state other than the predetermined stationary state, and in particular, may be a state in which the vehicle has started traveling.

(11) The predetermined stationary state is that the vibration state acquired from the vibration detecting means is the predetermined state, the speed information acquired from the vehicle is the predetermined state, and the speed based on the position information acquired from the positioning means. The information may be in a predetermined state, and the speed information acquired from the GPS receiving means may be determined based on at least one of the predetermined state. For example, any predetermined state may be a state that can be taken in an actual stop state, and particularly a state that cannot be taken in a running state. Further, for example, a state actually measured in a stopped state may be stored, and it may be determined whether the vehicle is in a predetermined state based on whether or not the pattern matches the stored pattern. As the predetermined state of the vibration state acquired from the vibration detection means, for example, a vibration characteristic at the time of a stop different from the vibration characteristic at the time of traveling is stored, and when the vibration characteristic at the time of the stop is the same as the stop state, It is good to make a judgment.
In particular, it is preferable to make a configuration based on at least any two of these. This makes it possible to more reliably discriminate whether the vehicle is in a predetermined stop state.

(12) A function of suppressing overwriting to a predetermined range of video including the video currently being recorded based on an operation from the user is provided. It is desirable to have a function to suppress overwriting.
In this way, even if the recording device is turned off due to an accident or the engine is turned off without performing an operation to suppress the overwriting of the accident image at the time of the accident, the power is supplied again. In this case, the overwriting of the image in a predetermined range before the power is cut off can be suppressed at that time.

(13) When at least one of rescue of the partner, injury to the partner, talking with the partner, and the like is detected, a function of suppressing the overwriting may be provided.
By doing so, it is possible to more reliably suppress the possibility that the video at the moment when an event such as an accident occurs is erased.

  When at least one of rescue of the partner, injury of the person, talking with the partner, and the like is detected, for example, rescuing of the partner, injury of the person, talking with the partner, and the like are performed. It may be immediately after detecting at least one of the above, but it is preferable that the predetermined time has elapsed. For example, at least one of rescue of the partner, injury of the person, talking with the partner, etc. It is good to detect after detecting these, and after detecting these. In this way, rescues and discussions are recorded without suppression, but since these times are relatively short, the recorded accident video has been overwritten and erased. Can be suppressed. Judgment that the person is in a state of being injured, talking with the other party, or the like is provided by a function of recognizing a person in a video imaged in the vehicle by image recognition processing such as face recognition. It may be performed based on whether or not the given time is a predetermined pattern stored in advance. For example, when two or more persons are recognized for more than a predetermined time, or when the same person is repeatedly recognized or stopped within a predetermined time, overwriting may be suppressed.

(14) When the engine starter detects that the engine has been started, it is preferable to have a function of suppressing the overwriting.
With this configuration, it is possible to reduce a possibility that the video at the moment when an event such as an accident occurs is erased by the video while the engine is started by the engine starter and idling.

  For example, the following (15) to (23) may be particularly used in order to more reliably store and store the recording data at the time of the accident and before and after the accident. These focus on stopping the vehicle immediately when the vehicle accidentally occurs or when rescue is performed by witnessing the accident. For example, it is possible to solve the problem that the recorded video disappears due to overwriting in the continuous recording, and the problem that the event recording is not stored when the sensor does not detect or does not perform a button operation, for example.

(15) It may be provided with a function of judging whether or not it is immediately after an accident and, when judging immediately after the accident, a function of suppressing the overwriting.
By doing so, it is possible to more reliably store and save the images at the time of the accident and before and after the accident. As a more specific configuration, for example, (17) and (18) may be used.

(16) It may be provided with a function of judging whether or not the car has been moved to a safe place after the accident, and suppressing the overwriting when judging that the car has been moved to a safe place after the accident.
By doing so, it is possible to more reliably store and save the images at the time of the accident and before and after the accident. A more specific configuration may be, for example, as shown in (19). In this case, the suppression of the overwriting may be particularly performed on the video including the time points before and after the accident. Whether or not the location is safe may be determined in advance by storing area information or the like of the secure location and determining whether or not the detected current position is included in the stored area range. Alternatively, area information of an unsafe place may be stored in advance, and the determination may be made based on whether the current position is outside this area. In particular, the area on the road may be an unsafe area.

(17) It is provided with a continuous recording function, wherein the predetermined stop state is a stop state, and when the vehicle is in the predetermined stop state, the recorded video of the continuous recording for a predetermined time before and after the predetermined stop state. The overwriting may be suppressed.
When an accident or the like occurs, as described above, the vehicle stops immediately after that. Therefore, if the overwriting is suppressed by storing the video before and after the stop in a dedicated folder or the like, there is a high possibility that the recording of the accident or the like has been recorded. be able to.

  As described in (1) to (14) above, in particular, after (15), for example, the recording data (imaging data) of the recorded video or the recording data file containing the same is stored in a specific folder to prevent overwriting. May be moved or copied to and stored in a specific storage area or a specific storage medium. The overwriting may be suppressed by moving or copying to a folder or the like where overwriting is prohibited. For example, it is practical to stop the vehicle frequently in a city or the like, so that a dedicated folder or the like is permitted to be overwritten. . As described above, by suppressing overwriting by moving or copying to a dedicated folder or the like with overwriting permission, the data amount in the dedicated folder or the like can be smaller than the data amount of continuous recording. If the same storage capacity as the recording is used, the probability of being overwritten is reduced, which is beneficial.

  For example, if there is an event recording function and a continuous recording function, the predetermined time before and after may be longer than the recording time by the event recording function and shorter than the recording time by the continuous recording function. For example, it is preferable to suppress overwriting in a range starting several tens seconds to several minutes before stopping and ending several tens seconds to several minutes after stopping. In particular, it is preferable that the overwrite suppression time before stopping is longer than after stopping, and it is preferable that the overwriting suppression time is about 1 to 3 minutes before and about several tens seconds to 1 minute after. If the length is too long, the memory capacity increases and the possibility of erasure due to overwriting etc. increases, but in this case, the memory capacity does not need to be large, the possibility of erasure is low, and The contents of the accident can be reliably recorded, including the process up to encountering the accident and the process after the accident.

  The continuous recording may be configured to store the video of the continuous recording in file units at predetermined time intervals. In this configuration, the recorded video is created in file units at predetermined time intervals, and is overwritten. In particular, when the configuration of (17) is provided, the predetermined time is preferably about 1 minute. If the file unit is, for example, about one minute, the file can be easily processed as a file at the time of stopping, a file up to one or two files before, and a file after one.

(18) A function of providing a continuous recording function, and recording the continuous recording in another storage area depending on whether the vehicle is in the predetermined stop state as the suppression of the overwriting, and performing the overwriting recording in each storage area. It is good to have.
In this way, even if the vehicle is in the predetermined stopped state for a long time, the video in the predetermined non-stopped state (for example, the moving image) is overwritten with the video in the predetermined stopped state. Can be suppressed. It is preferable that the continuous recording when the vehicle is in a predetermined stop state is also overwritten due to the limitation of the memory capacity.

As another storage area, a storage area managed separately may be used, for example, a different folder or a different drive may be used.
“Depending on whether the vehicle is in the predetermined stop state” may be “in a case where the vehicle is in the predetermined stop state and in a case where the vehicle is not in the predetermined stop state”. As another storage area, for example, a storage area for a predetermined stop state and a storage area for a non-stop state may be provided. The "depending on whether the vehicle is in the predetermined stop state" may be "immediately when the vehicle is in the predetermined stop state or not," but may be changed as "immediately when the vehicle is in the predetermined stop state. It is not always necessary to say "Immediately." In particular, in the case of a configuration in which the continuous recording function is configured to generate a file in a file unit for each predetermined time (for example, one minute), when the state is changed from the predetermined stop state to the predetermined stop state, Alternatively, when the state changes from the predetermined stop state to the predetermined non-stop state, a process of switching the storage area of the file storage destination may be performed immediately. Until the recording of the recording unit time (for example, the above one minute) is completed, the storage area of the file storage destination is not switched. It is preferable to determine whether or not there is a file, to determine whether or not the vehicle is in a predetermined stop state, and to determine the storage area where the file is stored.

  For example, the continuous recording may be divided into a running state and a stopped state, and the continuous recording may be recorded in different folders during the running state and the stopped state, and may be overwritten and stored in the respective folders. In this way, even if the vehicle is stopped without stopping the engine for a long time, the recording during running can be prevented from being erased by overwriting while the vehicle is stopped, and the accident during the stop can be recorded. It is better to overwrite continuous recording while stopped because of the memory capacity limitation.

(19) A continuous recording function is provided, and the predetermined stop state includes a state in which the vehicle stops and stops for a predetermined time, and when the vehicle enters the predetermined stop state, the time when the stop is started is determined. It is preferable that the overwriting is suppressed for a video that has been recorded continuously and continuously for a predetermined time.
In this way, it is possible to prevent the overwriting from being suppressed each time the vehicle stops, and to reduce the probability of erasure even when the video recording capacity is small, such as with a small memory capacity.

  In particular, the time during which "stopping for a predetermined period of time" in the "state in which the vehicle has stopped and the vehicle has stopped for a predetermined period of time" may be set to a time that is longer than the stopping time when waiting for a general traffic light. It is preferable that the overwriting is not suppressed during a stop time in a general waiting time for a traffic light, and the overwriting is suppressed when the vehicle is stopped for a relatively long time. In this way, it is possible to prevent the overwriting from being suppressed each time a signal is waited, reduce the frequency of the overwriting, and reduce the probability of erasing even with a small memory capacity.

  Particularly, it is preferable to set the time to about 3 to 5 minutes. In this way, it is possible to prevent the possibility that the recording at the time of the accident is overwritten by continuous recording while the vehicle is stopped due to forgetting to turn off the engine. Also, if normal driving is resumed in a shorter time than this, it is considered that it is not an accident or a serious accident, so the suppression of overwriting works excessively, and the storage area is filled with the overwritten suppressed image. Can be prevented, and the possibility of pressing the recordable area of the continuous recording can be reduced. In particular, it is more preferable to combine the configuration (26) described later.

  Further, if the vehicle is stopped, but the stop does not continue for a predetermined time, if the configuration is such that the suppression of the overwriting is not performed on the recorded video of the continuous recording for a predetermined time before and after the time when the stop was started. Good. Further, the configuration of (19) which does not include the configuration of (17) is preferable.

(20) A continuous recording function is provided, and when the power supply of the apparatus is cut off, immediately before the power supply is cut off, when the vehicle stops before the power supply is cut off, or when the predetermined stop state before the power supply is cut off. It is preferable to have a function of suppressing the overwriting of the recorded video of the continuous recording including at least any one of the following times.

It is important to stop the engine for a long time without stopping the engine in the event of an accident, etc. It seems that there are more cases of stopping and parking. In this case, the event recording may be performed before the engine is stopped.However, in the case of a configuration without the event recording function, or in the case where the event recording is not performed because the event recording function is not determined as an event, an accident may occur. There is a possibility that the accident video of continuous recording may be erased by overwriting in the run after the processing, but in this case, such a situation can be prevented, and the video of the accident etc. can be recorded more reliably. Can be In particular, if the power of this device is supplied from the vehicle and the power supply from the vehicle is cut off when the engine of the vehicle is stopped, the recording before the stop of the engine is stored every time. Become. In particular, in order to suppress overwriting, for example, a dedicated folder may be provided and overwritten and recorded. In addition, “including one time point” may be, for example, a predetermined time before and after the one time point.
As a configuration example of the above (20), for example, when the power of the recording apparatus is shut off after the vehicle stops, it is preferable to perform the overwrite suppression processing on the recorded video of the continuous recording for a predetermined time before and after the stop.

(21) It is preferable that a backup power supply capable of supplying power when the power supply is cut off is provided, and the overwrite is suppressed by the backup power supply when the power supply is cut off.
This makes it possible to more reliably suppress overwriting. Note that in a configuration without a backup power supply, or in a case where a backup power supply is provided but the capacity of the backup power supply is reduced, the overwriting may be suppressed after the next power-on and startup. .

  In particular, for example, the process (20) may be performed in this manner. For example, if there is a backup power supply, turn off the power after performing the overwrite suppression processing with the backup power supply.If the backup power supply is not installed, or if the capacity of the backup power supply is low, It is preferable to perform the overwrite suppression processing after the activation in which the is input. This is preferable because the processing needs to be performed after the power is turned off.

(22) A positioning function may be provided, and the overwrite suppression may have a function of not performing the overwrite suppression when the measured location is a preset location.
For example, it is often unnecessary to record an accident at a place where parking is frequently performed, such as a parking lot at home or at work. For example, a place where such a record is unnecessary is set in advance, and the overwrite suppression processing is performed. It is better not to have it. Accordingly, the probability that a necessary image, such as a record at the time of an accident, disappears by overwriting can be reduced. The setting of the place where the overwrite suppression processing is not performed may be performed by, for example, storing and setting the position when an instruction such as a button operation is input at the place. In particular, for example, the configuration of (20) may be provided with the configuration of (22).

(23) The vehicle has a continuous recording function, and the predetermined stop state includes a state in which the vehicle travels after stopping and then stops again, and the time of the re-stop exceeds a predetermined time. When the state is reached, it is preferable to suppress the overwriting of the video of the continuous recording before and after the stop and the video of the continuous recording before and after the re-stop.
In this way, when the car is moved to a safe place after the accident, the image at the time of the accident and the picture at the time of moving to the safe place can be more reliably stored and saved.

More specifically, for example, in the continuous recording, when the vehicle is stopped, temporarily store the recording data of the continuous recording for a predetermined time before or after the recording data file including it, and when the vehicle runs and then stops again, If the stop time is equal to or longer than a predetermined time, the recording data for a predetermined time before or after the re-stop or the recording data file including the same, and the temporarily stored recording data or the recording data file including the same are stored in a specific folder, a specific folder. It is preferable to move or copy to a storage area or a specific storage medium to store the data. The temporary storage may be erased when the vehicle resumes running at a predetermined speed or higher.
In addition to the processing up to the stop of one stop before the stop for a predetermined time or more, similar overwrite control may be performed up to two or three stops before.

(24) A continuous recording function is provided, wherein the predetermined stop state is a state in which the stop time of the vehicle is longer than a predetermined time, and the time is stored each time the vehicle stops, and the stop is longer than the predetermined time. After that, it is preferable to suppress the overwriting for the video of the stored continuous recording for a predetermined time before and after the stop time stored before and after the time and a predetermined time before that time.
By doing so, for example, even if the vehicle is stopped several times when moving the car to a safe place after the accident, the image at the time of the accident and the image obtained when the vehicle is stopped more than once can be more reliably determined. Can be stored. Further, since the configuration is such that the time is stored, the required temporary storage capacity is smaller than in the configuration in which the video data is temporarily stored for each stop, so that an increase in cost can be easily suppressed.

The predetermined time may be the number of times or the time. For example, it may be set to four times, for example, five minutes. It is preferable to set both conditions of time and number of times. For example, it may be four times and five minutes.
The time may be a stop end time or a stop time, but may be a stop start time. The stop time of each stop is stored, and if there is a stop that continues for a predetermined time or more, the recording before and after the start of the stop at the stop before a predetermined time may be stored.
More specifically, for example, when the vehicle stops, the time when the stop was started is stored each time the vehicle stops, and when the stop continues for a predetermined time or more, the start time of the stop and the start time of the stop until a predetermined time earlier than the stop time are stored. The continuous recording data in which recordings for a predetermined time before and after the recording are stored, or the continuous recording data file including the same may be moved or copied to a specific folder, a specific storage area, or a specific storage medium and stored.

(25) A continuous recording function is provided, and when it is determined that the vehicle is in the predetermined stop state, the plurality of different time points are determined as targets of overwriting suppression, and the determined time point and the time including before and after the determined time point are recorded. It is preferable to suppress the overwriting for the video.
In this way, compared to a configuration in which the video data at each time point and the video data before and after the time point are temporarily stored in the RAM or the like at each time point, the required storage capacity of the temporary storage is small, and the cost increase can be easily suppressed. In addition, the image at the time of the accident and the image at the time related thereto can be stored and stored more reliably.

(26) In the determination as to whether or not the vehicle is in the predetermined stop state, the stop time is equal to or longer than a predetermined time, and supply from the vehicle before the vehicle stops and the stop is continued for a predetermined time or more. When the power supply is cut off, it is preferable that the vehicle stop is considered to have continued for a predetermined time or more.
If the engine is stopped immediately after the vehicle stops, the continuous recording will not proceed anymore, so it will not be erased by overwriting while the vehicle is stopped, but if the engine is started again and running starts, continuous recording will start and overwrite It is better to save the data because it may be erased.
For example, in the configurations of (18) to (25), when the vehicle stops and the power supply from the vehicle is cut off before the stop continues for a predetermined time or more, it is determined that the stop has continued for a predetermined time and the saving process is performed. It is good to have composition.

  According to (26), it is possible to easily adopt a configuration in which the stop time does not include the time during which the engine is stopped. In such a configuration, it is not necessary to perform a process for determining the stop time at the time of power supply termination or power supply start. For example, in order to determine the stop time, for example, when power is supplied, it is not necessary to perform a process of determining the stop time from the final recording time before the engine is stopped and the time when the engine is started.

(27) When the power supply from the car is cut off, it is determined that the vehicle is in the predetermined stop state, and when the overwriting is to be suppressed, a backup power supply is used, or the power is turned on next. The processing should be performed when the circuit is activated.
If the recording device (for example, a drive recorder) has a battery, the storage process may be performed after the battery, and then the recording device (for example, the drive recorder) may be stopped. However, if the battery is not mounted or the battery is exhausted. It may be better to process when the power is turned on next.
For example, when the power supply from the vehicle is cut off as in (27), it is considered that the vehicle has stopped for a predetermined time or more, and for example, in any of the configurations (18) to (27), it is determined that the vehicle has stopped for a predetermined time. As a result of the determination, it is particularly preferable to provide the configuration (23) in the configuration for suppressing overwriting.

(28) The stop may have a function of deeming that the stop is continued until the vehicle travels at a predetermined speed or more after the vehicle stops.
In this manner, when the speed is lower than the predetermined speed, the vehicle is regarded as a stop and the above-described configuration can be realized. In particular, the predetermined speed may be, for example, approximately several kilometers per hour, which corresponds to traffic congestion. For example, in a case where the vehicle stops slightly after traveling a little, such as during a traffic jam, it is possible to prevent a large number of overwrites from being suppressed. More preferably, the predetermined speed can be set by the user.

(29) The suppression of overwriting is performed by storing the video in any one of a predetermined folder, a predetermined storage area, and a predetermined storage medium, and the storage is set in advance to overwrite prohibition, overwrite permission, or It is preferable that the setting can be changed, and in the case where overwriting is permitted, the probability that the memory is erased by overwriting is lower than that of continuous recording.
If it is clear in advance whether overwriting is prohibited or permitted, which is optimal is set in advance from the beginning (for example, at the time of shipment), and if it is better to set according to the usage of the user, the setting can be changed. Even in the case where overwriting is permitted, by making the probability of erasing the memory by overwriting lower than that of continuous recording, it is possible to more reliably record a video at the time of an accident or the like.
The video may be a recorded video.

(30) A configuration in which a constant recording function is provided, and the storage in the predetermined folder, the predetermined storage area, or the predetermined storage medium is stored in a different folder, storage area, or storage medium from the normal recording and the event recording. Good to do.
In this way, the effects of constant recording and event recording can be reduced. In addition, it is possible to reduce the influence on continuous recording and event recording. And search becomes easy.

(31) It is preferable that a continuous recording function and an event recording function are provided, and the continuous recording and the event recording are continuously executed even during the stop.
In this way, for example, it is complemented when data is lost due to missing or overwriting. Further, when used in combination with continuous recording and event recording, the reliability of recording and saving in the event of an accident or the like is further improved.
The configurations described in the above items (1) to (31) can be basically combined arbitrarily, and a plurality of items may be combined within a range where no contradiction occurs. At the time of combination, each item can be combined based on the idea of each item and exerting ordinary creative ability of a person skilled in the art. When components described in each section have the same name, components having the same name may be configured as different elements, but may be configured as the same element. For example, the “continuous recording function” is configured as a different continuous recording function for each item, and is configured as n continuous recording functions such as “first continuous recording function”... “N-th continuous recording function”. However, some or all of them may have the same continuous recording function. Further, for example, the "predetermined stop state" may be such that, for example, the items described in each item are separately determined and, for example, suppression of overwriting is performed on different recording targets. At least some or all of them may be combined and determined to suppress overwriting of the same recording target.

Regarding (1) to (31), for example, even in a configuration having a continuous recording function and an event recording function, it is possible to more reliably verify a video such as an accident. In particular, the video recorded by the event recording function is recorded by the continuous recording function, such as a configuration that has a function to overwrite the video recorded by the event recording function on the video recorded by the continuous recording function. This has a more remarkable effect when the recording is performed with priority over the recording.
(32) The functions of the above-described recording device may be configured as a program to be realized by a computer.

FIG. 2 is a perspective view of the drive recorder ((a) is a rear side, and (b) is a front side). FIG. 3 is a perspective view of a holder on which the acceleration sensor is mounted. FIG. 2 is a perspective view of an imaging unit housed therein ((a) is a rear side, (b) is a front side). FIG. 2 is a block diagram illustrating an electrical configuration of the drive recorder. The flowchart which shows the flow of control. Explanatory drawing of the recording operation by continuous recording. FIG. 4 is an explanatory diagram illustrating data movement between a drive recorder and a personal computer. FIG. 4 is an exemplary front view showing an example of an operation setting screen displayed on a personal computer. FIG. 9 is a perspective view of another drive recorder. FIG. 9 is a perspective view of another drive recorder.

Embodiments of the present invention will be specifically described using the following examples.
(Example 1)
A drive recorder 1 illustrated in FIG. 1 as an example of a recording device includes a substantially cylindrical main body case 2 in which an imaging unit and the like are housed. The main body case 2 can be attached to, for example, a windshield of a vehicle via a mounting bracket 3.

The bracket 3 includes a holding ring externally inserted into the substantially cylindrical main body case 2 and a substantially flat mounting plate 5 circumscribing the holding ring. An end of the main body case 2 inserted into the holding ring of the bracket 3 is configured so that a substantially donut-shaped cap 4 can be screwed therein. If the cap 4 is screwed in while the rotation angle of the main body case 2 is adjusted, the main body case 2 can be fixed to the bracket 3. If the rotation angle of the main body case 2 with respect to the bracket 3 is adjusted, the depression range of the drive recorder 1 can be changed to adjust the shooting range.
The drive recorder 1 can be mounted on a front window or the like via the mounting plate 5 so that the lens 14 of the CCD camera 13 faces a predetermined direction (generally, a front direction).

  An access hole 171 to the DC jack 16 and a USB port 172 to which a USB cable extended from a personal computer or the like can be connected are provided on the side end surface of the main body case 2 which is substantially flush with the end of the screwed cap 4. Perforated. An insertion port 181 for inserting an SD card is provided on the opposite side end surface of the main body case 2. An LED (display unit) 181A is arranged at a position adjacent to the insertion port 181. The LED 181A turns on during data access to an SD card, which is a memory card as an example of a storage medium inserted into the insertion slot 181.

  The main body case 2 is a hollow case in which a camera cover 2b and a back cover 2a, which are parts obtained by dividing a substantially cylindrical shape into two vertically, are combined. On the surface of the back cover 2a, a holder 7 (FIG. 2) for rotatably holding the holder body 7a, push buttons 8 and 9 serving as operating means, lighting blocks 10 and 11 for pilot lamps, and the like are provided. I have. The lens 14 of the CCD camera 13 is exposed on the surface of the camera cover 2b.

  An acceleration sensor 15, which is an example of a vibration detecting unit, is mounted on the holder body 7a in FIG. In the holder 7, the acceleration sensor 15 can be arranged in a horizontal direction as a reference position according to the rotation of the holder body 7a. The acceleration sensor 15 measures an acceleration, which is a measurement value of a physical quantity that reflects the state of the vehicle such as an applied impact.

  An imaging unit 21 is housed inside the main body case 2. As shown in FIGS. 3A and 3B, the imaging unit 21 is a unit having a board structure in which a main board 22 and a sub board 25 are stacked. On the main board 22, a CCD camera 13 as an example of an imaging unit, a GPS receiver 24 as an example of a GPS receiving unit, a DC jack 16, a power supply circuit (not shown), and the like are mounted. A one-chip microcomputer (not shown) serving as a control controller 30 (see FIG. 4), which is an example of a control unit, is mounted on the mounting surface of the main board 22 facing the sub-board 25.

  Switches 27 and 28 corresponding to the push buttons 8 and 9 are arranged on the sub-board 25, and LEDs 291 and 292 corresponding to the pilot lamp illumination blocks 10 and 11 are arranged. Further, a connector (not shown) for connecting a signal line extending from the acceleration sensor 15 is provided on the sub-board 25. On the mounting surface of the sub-substrate 25 facing the main substrate 22, an SD card reader 311 as an example of a medium storage unit for mounting an SD card and reading and writing data is mounted.

As shown in FIG. 4, the drive recorder 1 is electrically configured around a controller 30 which is an example of a control unit. The CCD camera 13, the acceleration sensor 15, the GPS receiver 24, the SD card reader 311, and the database 32 are connected to the control controller 30, respectively.
The controller 30 is mainly configured by a CPU (not shown), a memory such as a flash ROM, a ROM, or a RAM as an example of a storage unit, which constitutes a main body memory, and a microcomputer in which a timer and the like are incorporated in one chip.

  The ROM of the controller 30 includes a GPS information processing program for processing GPS information received by the GPS receiver 24, an image processing program for storing an image captured by the CCD camera 13 in a main memory or an SD card, and an OS (Operation System). ) Are stored.

The GPS receiver 24 is a receiver that detects the position information of the own vehicle at the current time according to an instruction of the controller 30. The detection timing by the GPS receiver 24 is set every second in this example. The position information to be detected is the position, speed, latitude, longitude, and altitude of the own vehicle. The GPS receiver 24 inputs the detected position information to the controller 30.
The CCD camera 13 is an imaging unit that captures an image of a scene in front through the lens 14 and acquires image data. The CCD camera 13 inputs imaging data to the controller 30 via an interface unit 33 capable of executing data compression and digital conversion.
The acceleration sensor 15 is a three-axis type sensor that detects acceleration and inclination in each of three axes (X, Y, Z), and inputs a detection value to the controller 30.
The SD card reader 311 reads and writes data on the SD card under the control of the controller 30.

  The data recorded on the SD card under the control of the controller 30 includes image data (image) of the CCD camera 13, position data and speed data of the GPS receiver 24, acceleration data of the acceleration sensor 15, and the like. . Each of these data is recorded in association with the recorded time. By such mutual association, the position data, speed data, and acceleration data at each time can be acquired in synchronization with the reproduction of the imaging data. It is also possible to record image data in synchronization with speed data, position data, acceleration data, and the like.

  The database 32 is a non-volatile memory, such as an EEPROM, inside the controller 30 or external to the controller 30. The database 32 stores a determination pattern for determining that the vehicle is in a predetermined stop state. An example of the determination pattern of the stop information of the vehicle is, for example, a pattern in which the time during which the vehicle is kept stopped is equal to or longer than a predetermined time.

  When energization of the drive recorder 1 is started in response to switching on of the vehicle ignition, the setting information stored in the SD card is read and copied to the main body memory (RAM), and the operation according to the setting information is started. You. If no setting information is stored in the SD card, default (initial setting) setting information stored in the main memory (ROM) is copied to the main memory (RAM).

  The setting information is information on settings such as a recording size, a frame rate, and an image quality. The individual settings for each user need to be generated using the personal computer 35 and stored in the SD card, and then the SD card needs to be set in the drive recorder 1. Since the default setting is stored in advance in the ROM of the drive recorder 1 as described above, it can be set without using the personal computer 35 or the like.

The operation of the drive recorder 1 configured as described above will be described focusing on the flow of control by the controller 30 illustrated in FIG.
When the drive recorder 1 is switched to the power-on state, the controller 30 reads the setting information copied to the main body memory (RAM) and reads the stop state determination pattern stored in the database 32. The controller 30 acquires an image by capturing an image in accordance with the read setting information, and, as a control of an example of a continuous recording function, an example of a continuous recording operation of continuously recording the captured image in a recording area of an SD card. Is performed (S101). The drive recorder 1 always performs continuous recording in the power supply state, except when the overwrite suppression function is enabled. Therefore, this continuous recording is always recording.

  During continuous recording, the controller 30 records a series of image data on the SD card as shown in FIG. The squares of each SD card in the figure schematically represent, for example, a block such as a sector when the storage area is partitioned and managed.

  When the SD card is in the initialized state, the controller 30 executes recording (recording of imaging data) as shown in FIG. 6A. When the storage area of the SD card becomes full, the storage area of the master SD card is erased as shown in FIG. At this time, the order of erasing is from the storage area of the SD card in which the recorded imaging data is old (the imaging timing is old), and in the order of 1, 2, 3,. Erase imaging data. The controller 30 records new imaging data as shown in FIG. C while erasing such old imaging data. By repeatedly performing such a recording operation, the captured video is continuously recorded.

  For example, as illustrated in FIG. 6A, when the vehicle ignition is turned off and the power supply is cut off in a state where the imaging data is recorded up to the 14th block on the SD card, the controller 30 When the vehicle ignition is turned on, the recording of the imaging data is continued from the 15th block of the SD card.

  While the continuous recording is being executed (S102 in FIG. 5: YES), the controller 30 repeatedly determines whether or not the vehicle is in the predetermined stop state using the stop state determination pattern read from the database 32. Execute (S103). The controller 30 uses the speed information acquired by the GPS receiver 24 to determine whether the vehicle is in a predetermined stop state. Specifically, when the state in which the speed represented by the speed information is less than 1 km / h is held for three minutes, which is an example of the predetermined time, it is determined that the vehicle is in the predetermined stop state.

  The controller 30 determines that the vehicle is in the predetermined stop state when, for example, a determination pattern that the time in which the vehicle is held in the stop state is 3 minutes or more, which is an example of the predetermined time, matches the current vehicle state. The overwrite suppression function is executed (S103: YES). In the following description, a state where the vehicle is held in a stopped state for three minutes or more is referred to as a predetermined stopped state. During execution of the overwrite suppression function, the controller 30 temporarily stops continuous recording by the continuous recording function (S104), thereby preventing erasing of recorded image data by overwriting of new image data. Perform control. On the other hand, if it is not the predetermined stop state (S103: NO), the recording by overwriting is continued (S114).

  The controller 30 uses the speed information acquired by the GPS receiver 24 while the continuous recording is temporarily stopped by the overwrite suppression function (S102: NO), and determines whether or not the vehicle has shifted to a predetermined traveling state. (S123). When shifting to the predetermined running state (S123: YES), the stop of the continuous recording by the overwrite suppression function is released, and the continuous recording is restarted (S124). In the present example, as an example of the predetermined traveling state, a state is set in which the speed information acquired by the GPS receiver 24 at the start of traveling of the vehicle exceeds, for example, 5 km / h, and the vehicle is not in the predetermined stop state. In the following description, this state is referred to as a predetermined traveling state. If the continuous recording is restarted in accordance with the start of the running of the vehicle in this manner, a moving image in which an event such as an accident is likely to occur can be more reliably recorded. On the other hand, if the traveling state is not the predetermined traveling state (S123: NO), the recording stop state by the overwrite suppression function is held (S134).

  The above control is repeatedly executed until the power supply is stopped (S105: NO), and ends when the power is turned off (S105: YES). Note that, for example, a capacitor or the like for storing electric power may be provided, and when power supply is cut off, control may be performed so as to execute a recording end process using the electric power stored in the capacitor and then stop all operations. .

  In determining the predetermined stop state or the predetermined traveling state, the controller 30 considers that the vehicle is stopped until the vehicle travels at a predetermined speed such as 5 km / h after the vehicle stops. In this manner, when the speed is less than 5 km / h, which is an example of the predetermined speed, the vehicle is regarded as a stop and the predetermined stop state and the predetermined traveling state can be determined. The predetermined speed may be, for example, a speed of several kilometers per hour corresponding to traffic congestion. For example, in a case where the vehicle stops slightly after traveling a little, such as during a traffic jam, it is possible to prevent a large number of overwrites from being suppressed. More preferably, the predetermined speed can be set by the user.

  The imaging data recorded on the SD card can be browsed using a tablet computer or a stationary personal computer in which application software for the drive recorder 1 is installed. In the case of a personal computer or the like having a card slot, the recorded image data can be viewed by setting the SD card removed from the drive recorder 1 in the card slot (see FIG. 7). It is also possible to take out the drive recorder 1 with the SD card set from the vehicle, connect it to a personal computer or the like via a USB cable, and view the image data recorded on the SD card.

  The operation setting of the drive recorder 1 can be changed in a personal computer or the like in a state where the imaging data can be viewed. When the operation setting screen (FIG. 8) is displayed on a personal computer or the like, various operation setting items such as a screen resolution and a frame rate can be changed. The setting information set by using the personal computer is stored in the SD card, and thereafter, is read out when the power supply is started, and is set in the main body of the drive recorder 1.

  The drive recorder 1 configured as described above has a function of suppressing overwriting when the vehicle is in a predetermined stop state. In the drive recorder 1, it is possible to prevent the video in the stopped state from being overwritten on the recorded video (imaging data) recorded during traveling and from being continuously recorded, so that the video at the moment when an event such as an accident occurs is displayed. There is little risk of being erased. If continuous recording is to be continued, for example, it is necessary to turn off the power of the drive recorder 1 to stop continuous recording with overwriting. On the other hand, if the overwrite suppression function is executed, an accident or the like can be performed without turning off the power. The situation in which the video at the moment when the event occurs is erased can be avoided.

  On the other hand, in a state where the stop time is less than a predetermined time such as three minutes even if the vehicle stops and the predetermined stop state is not determined, the overwrite suppression function is not activated and continuous recording is continued. By adopting such a setting for the overwrite suppression function, the video at the moment when an event such as an accident occurs can be more reliably recorded by continuous recording, and an event such as an accident occurs by the overwrite suppression function. It is possible to suppress the possibility that the video at the moment of the deletion is erased. As described above, according to the overwrite suppression function, it is possible to achieve a better balance between recording and preserving a video.

  In the configuration in which the newly acquired video is recorded by overwriting the video already recorded by the continuous recording as in the drive recorder 1 of this example, the overwrite suppression function has a particularly remarkable effect. In particular, in the drive recorder 1 of the present example, in which recording is continuously performed during energization and video is recorded while overwriting and erasing the recorded video, the overwrite suppression function has the most remarkable effect.

  In the drive recorder 1, a state in which the vehicle has been stopped for three minutes, which is an example of a predetermined time, is set as the predetermined stop state that triggers the execution of the overwrite suppression function. According to the drive recorder 1, it is possible to suppress with high certainty the possibility that the video at the moment when an event such as an accident occurs will be erased when the vehicle stops for more than a predetermined time.

  Further, the drive recorder 1 is configured not to execute the overwrite suppression function when the vehicle is not in the predetermined stop state. By adopting such a configuration, it is possible to more reliably record the video at the moment when an event such as an accident occurs, and to suppress the possibility that the video at the moment when the event such as an accident occurs is erased. And balance them in a better balance.

In the drive recorder 1, a predetermined stop state is determined using the speed information acquired from the GPS receiver 24. For example, the vibration state specified based on the acceleration measured by the acceleration sensor 15 as an example of the vibration detection means is a predetermined state such as an acceleration of 0.05 G or less, and the speed information acquired from the vehicle is, for example, The speed information based on the position information acquired from the positioning means is, for example, 1 km / h or less, and the speed information acquired from the GPS receiver 24 is, for example, 1 km / h. It may be configured to determine whether the vehicle is in a predetermined stop state based on at least one of the following predetermined states. In particular, it is preferable to make a configuration based on at least any two of these. This makes it possible to more reliably discriminate whether the vehicle is in a predetermined stop state.
For example, any of the above-mentioned predetermined states may be in a state that can be taken in an actual stop state, and in particular, may be in a state that cannot be taken in a traveling state. Further, for example, a state actually measured in a stopped state may be stored, and it may be determined whether the vehicle is in a predetermined state based on whether or not the pattern matches the stored pattern. As the predetermined state of the vibration state acquired from the vibration detection means, for example, a vibration characteristic at the time of a stop different from the vibration characteristic at the time of traveling is stored, and when the vibration characteristic at the time of the stop is the same as the stop state, It is good to make a judgment.

  Note that the continuous recording may be configured to store the video of the continuous recording in file units at predetermined time intervals. In this configuration, the recorded video is created in file units at predetermined time intervals, and is overwritten. In particular, when the vehicle is stopped in a predetermined stop state, in a configuration in which overwriting of the recorded video of the continuous recording for a predetermined time before and after that is suppressed, the predetermined time may be about 1 minute. If the file unit is, for example, about one minute, the file can be easily processed as a file at the time of stopping, one or two files before, and a file after one.

  Further, it is preferable that a function of recording the continuous recording in different storage areas according to whether or not the vehicle is in the predetermined stop state as the suppression of the overwriting and performing the overwriting recording in each storage area is provided. In this way, even if the vehicle has been in the predetermined stopped state for a long time, the image of the state that is not the predetermined stopped state (for example, the moving image) is replaced with the image of the predetermined stopped state. Overwriting can be suppressed. It is better to overwrite continuous recording when the vehicle is in a predetermined stop state due to the limitation of the memory capacity.

  As another storage area, a storage area managed separately may be used, for example, a different folder or a different drive may be used. For example, as shown in FIG. 9, the drive recorder 1 having the SD card insertion ports 181 and 182 is employed. When the vehicle is in a predetermined stop state, continuous recording is performed in the storage area of the SD card in the insertion port 181. When the vehicle is not in a predetermined stop state, it is preferable to execute continuous recording in the storage area of the SD card in the insertion slot 182.

  “Depending on whether the vehicle is in the predetermined stop state” may be “in a case where the vehicle is in the predetermined stop state and in a case where the vehicle is not in the predetermined stop state”. As another storage area, for example, a storage area for a predetermined stop state and a storage area for a non-stop state may be provided. The "depending on whether the vehicle is in the predetermined stop state" may be "immediately when the vehicle is in the predetermined stop state or not," but may be changed as "immediately when the vehicle is in the predetermined stop state. It is not always necessary to say "Immediately." In particular, in the case of a configuration in which the continuous recording function is configured to generate a file in a file unit for each predetermined time (for example, one minute), when the state is changed from the predetermined stop state to the predetermined stop state, Alternatively, when the state changes from the predetermined stop state to the predetermined non-stop state, a process of switching the storage area of the file storage destination may be performed immediately. Until the recording of the recording unit time (for example, the above one minute) is completed, the storage area of the file storage destination is not switched. It is preferable to determine whether or not there is a file, to determine whether or not the vehicle is in a predetermined stop state, and to determine the storage area where the file is stored.

  For example, continuous recording may be distinguished between running and stopped, and the continuous recording may be recorded in different folders during running and stopped, and overwritten and stored in each folder. In this way, even if the vehicle is stopped without stopping the engine for a long time, it is possible to prevent a situation in which the recording during running is erased by overwriting while the vehicle is stopped, and it is also possible to record an accident while the vehicle is stopped. It is better to overwrite continuous recording while stopped because of the memory capacity limitation.

  In particular, the time during which "stopping for a predetermined period of time" in the "state in which the vehicle has stopped and the vehicle has stopped for a predetermined period of time" may be set to a time that is longer than the stopping time when waiting for a general traffic light. It is preferable that the overwriting is not suppressed during a stop time in a general waiting time for a traffic light, and the overwriting is suppressed when the vehicle is stopped for a relatively long time. In this way, it is possible to prevent the overwriting from being suppressed each time a signal is waited, reduce the frequency of the overwriting, and reduce the probability of erasing even with a small memory capacity.

  Particularly, it is preferable to set the time to about 3 to 5 minutes. In this way, it is possible to prevent the possibility that the recording at the time of the accident is overwritten by the continuous recording while the vehicle is stopped due to forgetting to turn off the engine, and it is not an accident if the normal driving is resumed in a shorter time. Or, it is considered that this is not a serious accident, so the overwriting control works excessively, preventing the storage area from being filled with the video with the overwriting suppressed, and reducing the possibility of overwhelming the recordable area of continuous recording. it can.

  Further, if the vehicle is stopped, but the stop does not continue for a predetermined time, if the configuration is such that the suppression of the overwriting is not performed on the recorded video of the continuous recording for a predetermined time before and after the time when the stop was started. Good.

  The predetermined stop state includes a state in which the vehicle travels after stopping and then stops again, and the time of the re-stop is equal to or longer than a predetermined time such as 2 minutes, and the vehicle is in the predetermined stop state. In addition, it is preferable to suppress the overwriting of the video of the continuous recording before and after the stop and the video of the continuous recording before and after the re-stop. In this way, when the car is moved to a safe place after the accident, the image at the time of the accident and the picture at the time of moving to the safe place can be more reliably stored and saved.

More specifically, for example, in the continuous recording, when the vehicle stops, the recording data (imaging data) of the continuous recording for a predetermined time such as one minute before and after the vehicle or a recording data file including the same is temporarily stored. When the vehicle subsequently travels and stops again, if the stop time is equal to or longer than a predetermined time such as 2 minutes, recorded data for a predetermined time such as 1 minute before and after the re-stop or recorded data including the same. The file and the temporarily stored recording data or the recording data file containing the file may be moved or copied and stored in a specific folder, a specific storage area, or a specific storage medium. The temporary storage may be erased when the vehicle resumes running at a predetermined speed such as 5 km / h or more.
In addition to the processing up to the stop of one stop before the stop for a predetermined time or more, similar overwrite control may be performed up to two or three stops before.

The predetermined stop state includes a state in which the stop time of the vehicle is equal to or longer than a predetermined time, for example, three minutes, and the time is stored every time the vehicle stops. In addition, it is preferable to suppress overwriting of a video of a stored continuous recording for a predetermined time before and after a stop time stored before a predetermined time described later.
By doing so, for example, even if the vehicle is stopped several times when moving the car to a safe place after the accident, the image at the time of the accident and the image obtained when the vehicle is stopped more than once can be more reliably determined. Can be stored. Further, since the configuration is such that the time is stored, the required temporary storage capacity is smaller than in the configuration in which the video data is temporarily stored for each stop, so that an increase in cost can be easily suppressed.

The predetermined time may be the number of times or the time. For example, it may be set to four times, for example, five minutes. It is preferable to set both conditions of time and number of times. For example, it may be four times and five minutes.
The time may be a stop end time or a stop time, but may be a stop start time. The stop time of each stop is stored, and if there is a stop that continues for a predetermined time or more, the recording before and after the start of the stop at the stop before a predetermined time may be stored.
More specifically, for example, when the vehicle stops, the time when the stop was started is stored each time the vehicle stops, and when the stop continues for a predetermined time or more, the start time of the stop and the start time of the stop until a predetermined time earlier than the stop time are stored. The continuous recording data in which recordings for a predetermined time before and after the recording are stored, or the continuous recording data file including the same may be moved or copied to a specific folder, a specific storage area, or a specific storage medium and stored.

When it is determined that the vehicle is in the predetermined stop state, the plurality of different time points are determined as targets of overwrite suppression, and the overwrite suppression is performed on a recorded image of a time including and including the determined time point and before and after the determined time point. Good.
In this way, compared to a configuration in which the video data at each time and before and after the time is temporarily stored in a main memory such as a RAM at each time, the required storage capacity of the temporary storage is small and the cost increase can be easily suppressed. In addition to this, it is possible to more reliably store and save the video at the time of the accident and the video at the time related thereto.

In the above-described determination of whether or not the vehicle is in the predetermined stop state, the vehicle is stopped and the power supply from the vehicle is cut off before the vehicle continues to stop for the predetermined time or longer, provided that the stop time is equal to or longer than a predetermined time. In this case, it is preferable that the vehicle stop is considered to have continued for a predetermined time or more.
If the engine is stopped immediately after the vehicle stops, the continuous recording will not proceed anymore, so it will not be erased by overwriting while the vehicle is stopped, but if the engine is started again and running starts, continuous recording will start and overwrite It is better to save it because it may be erased by
In addition, by adopting the above-described configuration in which the stop is considered to be continued, it is possible to easily realize a configuration in which the stop time does not include the time during which the engine is stopped. In such a configuration, it is not necessary to perform a process for determining the stop time at the time of power supply termination or power supply start. For example, in order to determine the stop time, for example, when power is supplied, it is not necessary to perform a process of determining the stop time from the final recording time before the engine is stopped and the time when the engine is started.

When the power supply from the vehicle is cut off, it is determined that the vehicle is in the predetermined stop state, and when the overwrite is to be suppressed, the backup power supply is used, or the power is turned on and the circuit is started. It is good to process at the point of time.
If the drive recorder is equipped with a battery, the operation can be stopped after the battery is saved.However, there are cases where the battery is not installed or the battery is exhausted. It is better to process when you put it.

The suppression of the overwriting is performed by storing the image in any one of a predetermined folder, a predetermined storage area, and a predetermined storage medium, and the storage can be set to overwrite prohibition and overwrite permission in advance, or the setting can be changed. In the case where overwriting is permitted, a configuration may be adopted in which the probability of erasing the memory by overwriting is lower than that of continuous recording.
If it is clear in advance whether overwriting is prohibited or permitted, which is optimal is set in advance from the beginning (for example, at the time of shipment), and if it is better to set according to the usage of the user, the setting can be changed. Even in the case where overwriting is permitted, by making the probability of erasing the memory by overwriting lower than that of continuous recording, it is possible to more reliably record a video at the time of an accident or the like.

While the power is supplied, a continuous recording function for performing continuous recording is always provided, and the storage in the predetermined folder, the predetermined storage area or the predetermined storage medium is a folder different from the normal recording and the event recording. , A storage area or a storage medium.
In this way, the effects of constant recording and event recording can be reduced. In addition, it is possible to reduce the influence on continuous recording and event recording. And search becomes easy.

(Example 2)
This example is an example in which an overwrite suppression button 80 (see FIG. 10), which is an example of an operation unit operated by a user to suppress overwriting, is added based on the drive recorder 1 described above.
When the overwrite suppression button 80 is operated during continuous recording, the controller 30 (see FIG. 4) overwrites a predetermined range of video including a currently recorded video, for example, a video recording range for one minute. Suppress. The controller 30 suppresses overwriting, even when the power is turned off, including an image in a predetermined range such as a recording range for one minute before the power is turned off.

This drive recorder 1 is very effective when the power of the drive recorder 1 is turned off by an accident or by turning off the engine without operating the overwrite suppression button 80 in the event of an accident. When the power is supplied again, the overwriting of the image in the predetermined range before the power is cut off can be suppressed at that time.
The other configuration and operation and effect are the same as those of the other embodiments as long as no contradiction occurs.

(Example 3)
This example is an example of a drive recorder in which a function of detecting an engine start by an engine starter is added based on any of the above drive recorders.
The drive recorder has a communication port for receiving a vehicle signal including a signal indicating the engine speed.

  The controller 30 (see FIG. 4) detects the start of the engine when the engine speed that does not satisfy the threshold value, for example, 300 rotations, exceeds the threshold value. When the engine start is detected, control is performed so as to suppress overwriting of the recorded image data.

In the case of the drive recorder of this example, the risk that an image at the moment when an event such as an accident occurs is reduced by the image while the engine is started by the engine starter and idling is reduced.
The other configuration and operation and effect are the same as those of the other embodiments as long as no contradiction occurs.

(Example 4)
This example is an example in which, based on one of the above-described drive recorders, the target for suppressing overwriting when the vehicle enters a predetermined stop state is temporally expanded.
The controller 30 of the drive recorder (see FIG. 4) executes control to suppress overwriting of recorded video of continuous recording for a predetermined time before and after the vehicle is stopped in a predetermined stop state.

  For example, when an accident or the like occurs, many drivers stop immediately after the accident, so if the overwriting is suppressed by storing images before and after the stop in a dedicated folder or the like, there is a high possibility that a recording of the accident or the like is recorded. . Therefore, according to the drive recorder of the present embodiment that suppresses overwriting of image data for a predetermined time before and after a predetermined stop state, data recorded at the time of an accident and before and after the accident can be stored and stored more reliably.

  For example, in the case of a drive recorder having an event recording function and a continuous recording function described later in the tenth embodiment, the above-mentioned predetermined time before and after is longer than the recording time by the event recording function, and is longer than the recording time by the continuous recording function. Should be short. For example, it is preferable to suppress overwriting in a range starting from several tens seconds to several minutes before stopping and ending several tens seconds to several minutes after stopping. In particular, it is preferable that the overwrite suppression time before stopping is longer than after stopping, and it is preferable that the overwriting suppression time is about 1 to 3 minutes before and about several tens seconds to 1 minute after. If the length is too long, the memory capacity increases and the possibility of erasure due to overwriting etc. increases, but in this case, the memory capacity does not need to be large, the possibility of erasure is low, and The contents of the accident can be reliably recorded, including the process up to encountering the accident and the process after the accident.

Note that, when the vehicle is in a predetermined stop state, the overwriting may be suppressed for a video that has been continuously recorded for a predetermined time before and after the time when the stop was started. In this way, it is possible to prevent the overwriting from being suppressed each time the vehicle stops, and to reduce the probability of erasure even when the video recording capacity is small, such as with a small memory capacity.
Other configurations and operational effects are the same as those of the other embodiments within a range that does not cause contradiction.

(Example 5)
This example is an example in which the control when the power is cut off is changed based on one of the drive recorders 1 described above.
When the power of the drive recorder 1 is cut off, the drive controller 1 (see FIG. 4) immediately before the power is cut off, at the time when the vehicle stops before the power is cut off, or at the predetermined time before the power is cut off. Control is performed to suppress overwriting of the recorded video of the continuous recording including at least one of the time points when the vehicle has stopped.

  It is important to stop the engine for a long time without stopping the engine in the event of an accident, etc. It seems that there are more cases of stopping and parking. In this case, the event recording may be performed before the engine is stopped.However, in the case of a configuration without the event recording function, or in the case where the event recording is not performed because the event recording function is not determined as an event, an accident may occur. There is a possibility that the accidental video of continuous recording may be erased by overwriting in the run after the processing, but this way it is possible to prevent such a situation and to more reliably record the video at the time of accident etc. Can be done. In particular, if the power of the drive recorder 1 is supplied from the vehicle and the power supply from the vehicle is cut off when the engine of the vehicle is stopped, the recording before the stop of the engine is stored every time. become. In particular, in order to suppress overwriting, for example, a dedicated folder may be provided and overwritten and recorded. In addition, “including one time point” may be, for example, a predetermined time before and after the one time point. For example, when the power of the drive recorder 1 is cut off after the vehicle stops, it is preferable to perform the overwrite suppression process on the recorded video of the continuous recording for a predetermined time before and after the stop.

  Further, a backup power supply capable of supplying power when the power is cut off may be provided, and when the power is cut off, overwriting may be suppressed by the backup power supply. With the drive recorder configured as described above, overwrite can be suppressed more reliably. In a configuration without a backup power supply, or in a case where a backup power supply is provided but the capacity of the backup power supply is reduced, it is preferable to suppress overwriting after the next power-on and startup.

In particular, for example, immediately before power-off, at the time of starting the stop before power-off, or for the recorded video of the continuous recording including at least one of the time of the predetermined stop state before power-off, The following processing may be performed to suppress overwriting. For example, if there is a backup power supply, turn off the power after performing the overwrite suppression processing with the backup power supply.If the backup power supply is not installed, or if the capacity of the backup power supply is low, It is preferable to perform the overwrite suppression processing after the activation in which the is input. This is preferable because the processing needs to be performed after the power is turned off.
Other configurations and operational effects are the same as those of the other embodiments within a range that does not cause contradiction.

(Example 6)
This example is an example in which a configuration for switching the control for suppressing overwriting is switched according to the vehicle position based on any of the above-described drive recorders.
The controller 30 (see FIG. 4) of the drive recorder executes a process of determining whether or not the location measured by the GPS receiver 24 is a preset location, for example. When the location of the vehicle is a preset location, the controller 30 does not suppress overwriting.

For example, it is often unnecessary to record an accident at a place where parking is frequently performed, such as a parking lot at home or at work. For example, a place where such a record is unnecessary is set in advance, and the overwrite suppression processing is performed. It is better not to have it. Accordingly, the probability that a necessary image, such as a record at the time of an accident, disappears by overwriting can be reduced. The setting of the place where the overwrite suppression processing is not performed may be performed by, for example, storing and setting the position when an instruction such as a button operation is input at the place.
The other configuration and operation and effect are the same as those of the other embodiments within a range that does not cause contradiction.

(Example 7)
This example is an example in which a predetermined stop state determination pattern is changed based on one of the drive recorders 1 described above.
The drive recorder 1 includes a vibration detecting unit (not shown) for detecting vibration. The controller 30 (see FIG. 4) detects the magnitude of the impact according to the magnitude and pattern of the vibration detected by the vibration detecting means, and when the magnitude of the impact is equal to or greater than a predetermined threshold, an accident occurs. Is determined to be highly likely.

  In the drive recorder 1 of the present example, a pattern in which the vehicle stops within several tens of seconds, which is an example of a predetermined time, after a shock equal to or greater than a threshold is detected as a determination pattern for determining a predetermined stop state, is stored in the database 32. Is stored in When the vehicle stops within a predetermined time after the impact occurs, the controller 30 determines whether or not the determination pattern of the stop state matches the actual vehicle state. Is determined. As in the case of the first embodiment, in a predetermined stop state, the continuous recording is stopped and the overwrite suppression function is executed to prevent the erasure of the recorded image data.

  The determination pattern of the stop state in the present example is a determination pattern based on knowledge that when a general driver encounters an accident, an action of stopping the vehicle within a predetermined time after an impact occurs is often adopted. By employing such a determination pattern, it is possible to more reliably suppress the possibility that the image pickup data of the video at the moment when an event such as an accident occurs is deleted.

  In this example, it is determined that there is a possibility of an accident when an impact having a magnitude equal to or larger than a predetermined threshold value is detected. However, instead of or in addition to this, the possibility of an accident is determined. If the failure diagnosis information of the vehicle ECU or the like acquired from a diagnostic system or the like such as an OBD is information indicating a failure, if the operation of an airbag or the like is detected, the image is image-recognized and the situation corresponding to an accident is considered. It is also possible to set a case where a scene in which is reflected is detected. The situation corresponding to an accident is, for example, a situation in which a deformed vehicle or an injured person has occurred.

  The drive recorder has a function to detect at least one of rescue of the other party, injury of the person, talking with the other party, etc., and effectively controls the overwrite suppression function when any is detected Good to do. By doing so, it is possible to more reliably suppress the possibility that the video at the moment when an event such as an accident occurs is erased. The rescue of the partner, the injury of the partner, the talking with the partner, and the like may be detected, for example, by recognizing the captured video.

When at least one of rescue of the partner, injury of the person, talking with the partner, and the like is detected, for example, rescuing of the partner, injury of the person, talking with the partner, and the like are performed. It may be immediately after detecting at least one of the above, but it is preferable that a predetermined time such as 2 minutes elapse, for example, to rescue the partner, injure the partner, talk with the partner, etc. It is preferable that after detecting at least one of them, the detection be stopped. In this way, the state of rescue and discussion is also recorded in the video, but since these times are relatively short, the recorded imaging data of the video at the time of the accident is overwritten and erased. The situation can be suppressed. As a method of detecting rescue of the partner, injury of the partner, talking with the partner, and the like, for example, detection may be performed by image recognition of a captured image. Judgment that the person is in a state of being injured, talking with the other party, or the like is provided by a function of recognizing a person in a video imaged in the vehicle by image recognition processing such as face recognition. It may be performed based on whether or not the given time is a predetermined pattern stored in advance. For example, when two or more persons are recognized for more than a predetermined time such as two minutes, or when the same person is repeatedly recognized or not recognized within a predetermined time such as three minutes, for example, It is good to suppress overwriting.
The other configuration and operation and effect are the same as those of the other embodiments as long as no contradiction occurs.

(Example 8)
This example is an example in which the control content of the overwrite suppression function is changed based on any of the above drive recorders.
In the overwrite suppression function of this example, continuous recording is not completely stopped even in a predetermined stop state. The control controller 30 (see FIG. 4) of the drive recorder 1 of the present example changes the video recording method and the like by continuous recording so as to secure a long time until overwriting and erasing when it is determined that the predetermined stop state is reached. Then, the possibility that the recorded video is erased is reduced.

  When not in the predetermined stop state, the controller 30 executes continuous recording, for example, recording video at 30 frames per second. On the other hand, when it is determined to be in the predetermined stop state, the overwriting suppression function switches to continuous recording in which the number of frames is reduced, for example, one frame per second.

  According to the drive recorder 1, when it is determined that a predetermined stop state has been reached, continuous recording can be continued while saving the memory capacity required for video recording. During the continuation of the predetermined stop state, it becomes possible to cope with an emergency such as arguing with the partner of the accident, and it is possible to secure video evidence useful for proof of the circumstances. On the other hand, when it is determined to be in the predetermined stop state, the overwrite suppression function saves the memory resources required for recording the video, so that the recorded video at the moment when an event such as an accident occurs may be erased by overwriting. Less.

  As a configuration for reducing the frame rate, video is recorded at several tens of frames per second in normal continuous recording, while the frame rate is set to a human digit, such as about several frames per second (for example, 1 fps) during the overwrite suppression function. You may want to make a small change.

Instead of or in addition to changing the frame rate, the number of pixels of the video to be recorded may be changed. Regarding the number of pixels, it is preferable to change, for example, 640 × 480 dots to 320 × 240 dots or to make the number of pixels smaller by human digits.
The other configuration and operation and effect are the same as those of the other embodiments as long as no contradiction occurs.

(Example 9)
This example is an example in which the content of the control by the overwrite suppression function is changed based on any one of the drive recorders 1 described above.
In the overwrite suppression function of the drive recorder 1 of the present example, the controller 30 (see FIG. 4) controls the recorded image data so that it does not disappear by overwriting. At least one of the following methods is adopted as a configuration for controlling so as not to be erased by overwriting.
(1) Overwriting of recorded image data is prohibited.
(2) The imaging data is copied to an area other than the overwrite area which is a writing area for continuous recording.
(3) The imaging data is moved to an area that is not an overwrite area.

  If the methods (1) to (3) are adopted, the video at the moment when an event such as an accident included in the recorded video does not disappear by overwriting, and the event such as an accident occurs more reliably. It is possible to eliminate the possibility that the video at the moment of the deletion is erased. Each method may be configured as follows, for example.

(1) As a configuration for prohibiting overwriting, for example, a video to be recorded may be recorded as one file in a predetermined time unit, and an overwriting attribute may be added as an attribute of the file.
(2) As a configuration for copying to an area that is not an overwrite area, for example, an overwritable area and an overwrite prohibited area may be separated, and video data recorded in the overwritable area may be copied to the overwrite prohibited area.
(3) As a configuration for moving to an area that is not an overwrite area, for example, an overwrite-enabled area and an overwrite-protected area may be separated, and video data recorded in the overwrite-enabled area may be moved to the overwrite-protected area. The overwrite-protected area and the overwrite-protected area may be, for example, different folders, different drives, or different file systems.

Note that, for example, image data of recorded video or an image data file containing the image data may be moved or copied and stored in a specific folder, a specific storage area, or a specific storage medium. The overwriting may be suppressed by moving or copying to a folder or the like where overwriting is prohibited. For example, it is practical to stop the vehicle frequently in a city or the like, so that a dedicated folder or the like is permitted to be overwritten. . In this way, by suppressing overwriting by moving or copying to a dedicated folder or the like with overwriting permission, the data amount in the dedicated folder or the like becomes smaller than the data amount of continuous recording, so If the same storage capacity as the recording is used, the probability of being overwritten is reduced, which is beneficial.
The other configuration and operation and effect are the same as those of the other embodiments as long as no contradiction occurs.

(Example 10)
This example is an example in which an event recording function for executing recording based on an event such as an accident based on any of the above drive recorders is added.

  The controller 30 (see FIG. 4) of the drive recorder of the present embodiment compares the acceleration detected by the acceleration sensor 15 with a threshold. The controller 30 executes an event recording for recording an image before and after the occurrence of an event that an acceleration exceeding a predetermined threshold has occurred.

  When the above-described event occurs during the execution of the continuous recording, the controller 30 executes, in parallel with the continuous recording, the event recording in which the video for a predetermined period before and after the occurrence of the event is recorded without overwriting. When an event occurs while the overwrite suppression function is being effectively controlled, the video before and after the occurrence of the event is recorded without overwriting using the free space in the storage area of the SD card. If there is not enough space in the storage area of the SD card, the video before and after the event occurrence is recorded in the storage area of the main body memory without overwriting. Note that the imaging data of the video before and after the occurrence of the event is recorded in synchronization with the speed data, the position data, the acceleration data, and the like.

  In this way, even if an event such as an accident occurs while the overwriting is suppressed, the event recording function will be used for recording, and the video at the moment when the event such as the accident occurs will be recorded. Can be more reliably suppressed from being erased. In particular, since the overwriting is suppressed when the vehicle is in a predetermined stop state, when an accident occurs when the vehicle stops, it is possible to more reliably suppress the possibility that the video at the moment of the accident or the like is erased. Since an accident may occur while the vehicle is stopped, it is desirable to make recording by the event recording function.

In the drive recorder 1 of the present embodiment, since the image pickup data of the video by event recording is recorded without overwriting, it is possible to reliably prevent the video at the moment of an accident or the like from being erased.
In this example, the output signal of the acceleration sensor 15 is used to detect the occurrence of the event. However, the output signal of another sensor may be used. It is also possible to detect occurrence.

  In a drive recorder having an event recording function, it is preferable to set a longer recording time for the continuous recording function than for the event recording function. In this way, overwriting is also suppressed for a video already recorded by continuous recording, and the possibility that the video of the recorded continuous recording at the moment when an event such as an accident occurs can be suppressed. When event recording is not executed due to a small impact or the like that is not regarded as an event, it is possible to increase the possibility of confirming the image at the moment of an event such as an accident with the image of continuous recording. In addition, even when the video is recorded by the event recording function, the situation before and after the event such as an accident for a longer time can be determined for a longer time by the video of the continuous recording recorded for a longer time than the video by the event recording. It has a remarkable effect that it can be confirmed.

It is preferable that the continuous recording and the event recording are continuously executed even during the stop. In this way, for example, it is complemented when data is lost due to missing or overwriting. Further, when used in combination with continuous recording and event recording, the reliability of recording and saving in the event of an accident or the like is further improved.
The other configuration and operation and effect are the same as those of the other embodiments as long as no contradiction occurs.

(Example 11)
This is an example of a preferable configuration of any of the drive recorders 1 described above.
For example, the following (a) to (i) may be configured for the purpose of more reliably storing and storing the recording data at the time of the accident and before and after the accident. These focus on stopping the vehicle immediately, especially when the vehicle has caused an accident or when rescue is performed by witnessing the accident. For example, it is possible to solve the problem that the recorded video disappears due to overwriting in the continuous recording, and the problem that the event recording is not stored when the sensor does not detect or does not perform a button operation, for example.

(A) It may be provided with a function of judging whether or not it is immediately after an accident and, when judging immediately after the accident, a function of suppressing overwriting.
By doing so, it is possible to more reliably store and save the images at the time of the accident and before and after the accident. As a more specific configuration, for example, the following (c) and (d) may be used.

(B) It is necessary to determine whether or not the car has been moved to a safe place after the accident, and to provide an overwrite suppression function for suppressing overwriting when it is determined that the car has been moved to a safe place after the accident. Good.
By doing so, it is possible to more reliably store and save the images at the time of the accident and before and after the accident. As a more specific configuration, for example, the following (e) may be used. In this case, the suppression of the overwriting may be particularly performed on the video including the time points before and after the accident.
Whether or not the location is safe may be determined in advance by storing area information or the like of the secure location and determining whether or not the detected current position is included in the stored area range. Alternatively, area information of an unsafe place may be stored in advance, and the determination may be made based on whether the current position is outside this area. In particular, the area on the road may be an unsafe area.

(C) a continuous recording function, wherein the predetermined stop state is a stop state, and when the vehicle is in the predetermined stop state, the recorded video of the continuous recording for a predetermined time before and after the predetermined stop state It is preferable to adopt a configuration in which overwriting is suppressed.
In the event of an accident or the like, many drivers stop immediately after the accident.Therefore, if the overwriting is suppressed by storing the video before and after the stop in a dedicated folder, etc., it is highly possible that a recording of the accident etc. is recorded. In addition, the data recorded at the time of the accident and before and after the accident can be more reliably stored and saved.

  For example, if there is an event recording function and a continuous recording function, the predetermined time before and after may be longer than the recording time by the event recording function and shorter than the recording time by the continuous recording function. For example, it is preferable to suppress overwriting in a range starting from several tens seconds to several minutes before stopping and ending several tens seconds to several minutes after stopping. In particular, it is preferable that the overwrite suppression time before stopping is longer than after stopping, and it is preferable that the overwriting suppression time is about 1 to 3 minutes before and about several tens seconds to 1 minute after. If the length is too long, the memory capacity increases and the possibility of erasure due to overwriting etc. increases, but in this case, the memory capacity does not need to be large, the possibility of erasure is low, and The contents of the accident can be reliably recorded, including the process up to encountering the accident and the process after the accident.

  The continuous recording may be configured to store the video of the continuous recording in file units at predetermined time intervals. In this configuration, the recorded video is created in file units at predetermined time intervals, and is overwritten. In particular, when the configuration of (c) is provided, the predetermined time is preferably about 1 minute. If the file unit is, for example, about one minute, the file can be easily processed as a file at the time of stopping, a file up to one or two files before, and a file after one.

(D) It is preferable to provide a function of recording continuous recording in different storage areas depending on whether or not the vehicle is in a predetermined stop state as the suppression of overwriting, and performing the overwriting recording in each storage area.
In this way, even if the vehicle has been in the predetermined stopped state for a long time, the image of the state that is not the predetermined stopped state (for example, the moving image) is replaced with the image of the predetermined stopped state. Overwriting can be suppressed. It is better to overwrite continuous recording when the vehicle is in a predetermined stop state due to the limitation of the memory capacity.

As another storage area, a storage area managed separately may be used, for example, a different folder or a different drive may be used.
“Depending on whether the vehicle is in the predetermined stop state” may be “in a case where the vehicle is in the predetermined stop state and in a case where the vehicle is not in the predetermined stop state”. As another storage area, for example, a storage area for a predetermined stop state and a storage area for a non-stop state may be provided. The "depending on whether the vehicle is in the predetermined stop state" may be "immediately when the vehicle is in the predetermined stop state or not," but may be changed as "immediately when the vehicle is in the predetermined stop state. It is not always necessary to say "Immediately." In particular, in the case of a configuration in which the continuous recording function is configured to generate a file in a file unit for each predetermined time (for example, one minute), when the state is changed from the predetermined stop state to the predetermined stop state, Alternatively, when the state changes from the predetermined stop state to the predetermined non-stop state, a process of switching the storage area of the file storage destination may be performed immediately. Until the recording of the recording unit time (for example, the above one minute) is completed, the storage area of the file storage destination is not switched. It is preferable to determine whether or not there is a file, to determine whether or not the vehicle is in a predetermined stop state, and to determine the storage area where the file is stored.

  For example, the continuous recording may be divided into a running state and a stopped state, and the continuous recording may be recorded in different folders during the running state and the stopped state, and may be overwritten and stored in the respective folders. In this way, even if the vehicle is stopped without stopping the engine for a long time, it is possible to prevent a situation in which the recording during running is erased by overwriting while the vehicle is stopped, and it is also possible to record an accident while the vehicle is stopped. It is better to overwrite continuous recording while stopped because of the memory capacity limitation.

(E) The predetermined stop state includes a state in which the vehicle stops and stops for a predetermined time, and when the vehicle enters the predetermined stop state, a predetermined time before and after the time when the stop was started. It is preferable that the above-mentioned suppression of the overwriting is performed on the recorded video of the continuous recording.
In this way, it is possible to prevent the overwriting from being suppressed each time the vehicle stops, and to reduce the probability of erasure even when the video recording capacity is small, such as with a small memory capacity.

  In particular, the time during which "stopping for a predetermined period of time" in the "state in which the vehicle has stopped and the vehicle has stopped for a predetermined period of time" may be set to a time that is longer than the stopping time when waiting for a general traffic light. It is preferable that the overwriting is not suppressed during a stop time in a general waiting time for a traffic light, and the overwriting is suppressed when the vehicle is stopped for a relatively long time. In this way, it is possible to prevent the overwriting from being suppressed each time a signal is waited, reduce the frequency of the overwriting, and reduce the probability of erasing even with a small memory capacity.

  Particularly, it is preferable to set the time to about 3 to 5 minutes. In this way, it is possible to prevent the possibility that the recording at the time of the accident is overwritten by the continuous recording while the vehicle is stopped due to forgetting to turn off the engine, and it is not an accident if the normal driving is resumed in a shorter time. Or, it is considered that this is not a serious accident, so the overwriting control works excessively, preventing the storage area from being filled with the video with the overwriting suppressed, and reducing the possibility of overwhelming the recordable area of continuous recording. it can. In particular, it is more preferable to combine the configuration (1) described later.

  Further, if the vehicle is stopped, but the stop does not continue for a predetermined time, if the configuration is such that the suppression of the overwriting is not performed on the recorded video of the continuous recording for a predetermined time before and after the time when the stop was started. Good. Further, it is preferable that the configuration of (e) not include the configuration of (c).

(F) When the power of the drive recorder 1 is cut off, at least the time immediately before the cutoff of the power supply, the time when the vehicle stops before the power cutoff, or the time when the vehicle stops in the predetermined stop state before the power cutoff. It is preferable to have a function of suppressing overwriting of the recorded video of the continuous recording including any one point in time.

It is important to stop the engine for a long time without stopping the engine in the event of an accident, etc. It seems that there are more cases of stopping and parking. In this case, the event recording may be performed before the engine is stopped.However, in the case of a configuration without the event recording function, or in the case where the event recording is not performed because the event recording function is not determined as an event, an accident may occur. There is a possibility that the accidental video of continuous recording may be erased by overwriting in the run after the processing, but this way it is possible to prevent such a situation and to more reliably record the video at the time of accident etc. Can be done. In particular, if the power of the drive recorder 1 is supplied from the vehicle and the power supply from the vehicle is cut off when the engine of the vehicle is stopped, the recording before the stop of the engine is stored every time. become. In particular, in order to suppress overwriting, for example, a dedicated folder may be provided and overwritten and recorded. In addition, “including one time point” may be, for example, a predetermined time before and after the one time point.
As an example of the configuration (f), for example, when the power of the drive recorder 1 is cut off after the vehicle stops, the overwrite suppression processing may be performed on the recorded video of the continuous recording for a predetermined time before and after the stop.

(G) It is preferable to provide a backup power supply capable of supplying power when the power supply is cut off, and to suppress overwriting when the power supply is cut off.
This makes it possible to more reliably suppress overwriting. In a configuration without a backup power supply, or in a case where a backup power supply is provided but the capacity of the backup power supply is reduced, it is preferable to suppress overwriting after the next power-on and startup.

  In particular, for example, the process (f) may be performed as described above. For example, if there is a backup power supply, turn off the power after performing the overwrite suppression processing with the backup power supply.If the backup power supply is not installed, or if the capacity of the backup power supply is low, It is preferable to perform the overwrite suppression processing after the activation in which the is input. This is preferable because the processing needs to be performed after the power is turned off.

(H) If the location measured by the GPS receiver 24 (FIG. 4) is a preset location, it is preferable to have a function of not suppressing the overwriting.
For example, it is often unnecessary to record an accident at a place where parking is frequently performed, such as a parking lot at home or at work. For example, a place where such a record is unnecessary is set in advance, and the overwrite suppression processing is performed. It is better not to have it. Accordingly, the probability that a necessary image, such as a record at the time of an accident, disappears by overwriting can be reduced. The setting of the place where the overwrite suppression processing is not performed may be performed by, for example, storing and setting the position when an instruction such as a button operation is input at the place. In particular, for example, the configuration of (f) may be provided with the configuration of (h).

(I) The predetermined stop state includes a state in which the vehicle travels after stopping and stops again, and the time of the re-stop is equal to or longer than a predetermined time, and when the vehicle is in the predetermined stop state, The overwriting may be suppressed for the video of the continuous recording before and after the stop and the video of the continuous recording before and after the re-stop.
In this way, when the car is moved to a safe place after the accident, the image at the time of the accident and the picture at the time of moving to the safe place can be more reliably stored and saved.

More specifically, for example, in the continuous recording, when the vehicle is stopped, temporarily store the recording data of the continuous recording for a predetermined time before or after the recording data file including it, and when the vehicle runs and then stops again, If the stop time is equal to or longer than a predetermined time, the recording data for a predetermined time before or after the re-stop or the recording data file including the same, and the temporarily stored recording data or the recording data file including the same are stored in a specific folder, a specific folder. It is preferable to move or copy to a storage area or a specific storage medium to store the data. The temporary storage may be erased when the vehicle resumes running at a predetermined speed or higher.
In addition to the processing up to the stop of one stop before the stop for a predetermined time or more, similar overwrite control may be performed up to two or three stops before.

(J) As the predetermined stop state, a state in which the stop time of the vehicle is longer than a predetermined time is provided, and the time is stored every time the vehicle stops. It is preferable to suppress the overwriting of the video of the stored continuous recording for the predetermined time before and after the stop time stored before the predetermined time.
By doing so, for example, even if the vehicle is stopped several times when moving the car to a safe place after the accident, the image at the time of the accident and the image obtained when the vehicle is stopped more than once can be more reliably determined. Can be stored. Further, since the configuration is such that the time is stored, the required temporary storage capacity is smaller than in the configuration in which the video data is temporarily stored for each stop, so that an increase in cost can be easily suppressed.

The predetermined time may be the number of times or the time. For example, it may be set to four times, for example, five minutes. It is preferable to set both conditions of time and number of times. For example, it may be four times and five minutes.
The time may be a stop end time or a stop time, but may be a stop start time. It is preferable that the stop time of each stop is stored, and if there is a stop that continues for a predetermined time or more, the recordings before and after the start of the stop at a stop before a predetermined time may be stored.
More specifically, for example, when the vehicle stops, the time when the stop was started is stored each time the vehicle stops, and when the stop continues for a predetermined time or more, the start time of the stop and the start time of the stop until a predetermined time earlier than the stop time are stored. The continuous recording data in which recordings for a predetermined time before and after the recording are stored, or a continuous recording data file including the recording, may be moved or copied to a specific folder, a specific storage area, or a specific storage medium and stored.

(K) when it is determined that the vehicle is in the predetermined stop state, the plurality of different time points are determined as targets of overwrite suppression, and the overwrite suppression is performed on the recorded video including the determined time point and the time before and after the determined time point. It is good to do.
In this way, compared to a configuration in which the video data at each time and before and after the time is temporarily stored in a main memory such as a RAM at each time, the required storage capacity of the temporary storage is small and the cost increase can be easily suppressed. In addition to this, it is possible to more reliably store and save the video at the time of the accident and the video at the time related thereto.

(L) A configuration in which the determination of whether or not the vehicle is in the predetermined stop state is based on a condition that the stop time is equal to or longer than a predetermined time, and the vehicle is stopped and supplied from the vehicle before the stop is continued for a predetermined time or more. When the power supply is cut off, it is preferable that the vehicle stop is considered to have continued for a predetermined time or more.
If the engine is stopped immediately after the vehicle stops, the continuous recording will not proceed anymore, so it will not be erased by overwriting while the vehicle is stopped, but if the engine is started again and running starts, continuous recording will start and overwrite It is better to save it because it may be erased by
For example, in the configurations of (d) to (k), when the vehicle stops and the power supply from the vehicle is cut off before the stop continues for a predetermined time or more, it is determined that the stop has continued for a predetermined time and the saving process is performed. It is good to have composition.

  In addition, the configuration as shown in (l) facilitates a configuration in which the stop time does not need to include the time during which the engine is stopped. In such a configuration, it is not necessary to perform a process for determining the stop time at the time of power supply termination or power supply start. For example, in order to determine the stop time, for example, when power is supplied, it is not necessary to perform a process of determining the stop time from the final recording time before the engine is stopped and the time when the engine is started.

(M) When the power supply from the vehicle is cut off, it is determined that the vehicle is in the predetermined stop state, and when the overwriting is to be suppressed, the backup power supply is used, or the power is turned on next. The processing should be performed when the circuit is activated.
If the drive recorder is equipped with a battery, the operation can be stopped after the battery is saved.However, there are cases where the battery is not installed or the battery is exhausted. It is better to process when you put it.
For example, when the power supply from the vehicle is cut off as in (m), it is considered that the vehicle has stopped for a predetermined time or more, and for example, in any of the configurations (d) to (m), the vehicle has stopped for a predetermined time. As a result of the determination, it is particularly preferable to provide the configuration (i) in the configuration for suppressing overwriting.

(N) The stop may have a function of deeming that the stop is continued until the vehicle stops at a predetermined speed or more after the vehicle stops.
In this manner, when the speed is lower than the predetermined speed, the vehicle is regarded as a stop and the above-described configuration can be realized. In particular, the predetermined speed may be, for example, approximately several kilometers per hour, which corresponds to traffic congestion. For example, in a case where the vehicle stops slightly after traveling a little, such as during a traffic jam, it is possible to prevent a large number of overwrites from being suppressed. More preferably, the predetermined speed can be set by the user.

(O) The overwrite is suppressed by storing the video in any one of a predetermined folder, a predetermined storage area, and a predetermined storage medium, and the storage is set in advance to overwrite prohibition, overwrite permission, or setting change. In the case where overwriting is permitted, the probability that the memory is erased by overwriting may be lower than that of continuous recording.
If it is clear in advance whether overwriting is prohibited or permitted, which is optimal is set in advance from the beginning (for example, at the time of shipment), and if it is better to set according to the usage of the user, the setting can be changed. Even in the case where overwriting is permitted, by making the probability of erasing the memory by overwriting lower than that of continuous recording, it is possible to more reliably record a video at the time of an accident or the like.

(P) a configuration in which a constant recording function is provided, and the storage in the predetermined folder, the predetermined storage area, or the predetermined storage medium is stored in a different folder, storage area, or storage medium from the normal recording and the event recording. Good to do.
In this way, the effects of constant recording and event recording can be reduced. In addition, it is possible to reduce the influence on continuous recording and event recording. And search becomes easy.

(Q) A continuous recording function and an event recording function may be provided, and the continuous recording and the event recording may be continuously performed even during the stop.
In this way, for example, it is complemented when data is lost due to missing or overwriting. Further, when used in combination with continuous recording and event recording, the reliability of recording and saving in the event of an accident or the like is further improved.
The other configuration and operation and effect are the same as those of the other embodiments as long as no contradiction occurs.

  As described above, specific examples of the present invention have been described in detail as in the embodiments. However, these specific examples only disclose examples of the technology included in the claims. Needless to say, the scope of the claims should not be interpreted in a limited manner by the configuration or numerical values of the specific examples. The scope of the claims encompasses techniques in which the above-described specific examples are variously modified, changed, or appropriately combined using known techniques, knowledge of those skilled in the art, and the like.

Each of the illustrated configurations can be basically combined arbitrarily, and a plurality of configurations may be combined within a range where no contradiction occurs. At the time of combination, each item can be combined based on the idea of each configuration and exerting ordinary creative ability of a person skilled in the art. If the components described in each configuration have the same name, the components having the same name may be configured as different elements, but may be configured as the same element. For example, the “continuous recording function” is configured as a different continuous recording function for each configuration, and configured as n continuous recording functions such as “first continuous recording function”... “N-th continuous recording function”. However, some or all of them may have the same continuous recording function. Further, for example, the “predetermined stop state” may be such that, for example, the one described in each configuration is separately determined and, for example, the overwrite is suppressed for different recording targets. At least some or all of them may be combined and determined to suppress overwriting of the same recording target.
The components described in each embodiment, the components described in Means for Solving the Problems, and the elements to which the idea is applied may be arbitrarily combined with each other as long as no inconsistency occurs.

DESCRIPTION OF SYMBOLS 1 Drive recorder 2 Main body case 8, 9 Push button 13 CCD camera 15 Acceleration sensor 181 Insertion port 181A LED
24 GPS receiver 30 Control controller 311 SD card reader 32 Database 35 Personal computer 361 SD card reader / writer 45 Monitor

Claims (10)

In a recording device having a function of overwriting a video captured in a vehicle on a recorded video,
A function of suppressing overwriting according to the state of the vehicle,
An event recording function for performing recording while suppressing the overwrite recording,
With
Suppressing the overwriting is to prevent a predetermined image that has been recorded without using the event recording function before the suppression from being erased by overwriting due to recording by the event recording function. Recording device. The recording apparatus according to claim 1, wherein the function of suppressing the overwrite suppresses the overwrite when the vehicle is in a predetermined stop state. Preventing the overwriting by the overwriting is prohibited, overwriting to the predetermined video is prohibited, the predetermined video is copied to a non-overwriting area, or the predetermined video is moved to a non-overwriting area, The recording apparatus according to claim 1, further comprising at least one of the following. In a recording device having a function of overwriting a video captured in a vehicle on a recorded video,
A function of suppressing the overwriting according to the state of the vehicle,
An event recording function for performing recording while suppressing the overwrite recording,
With
Suppressing the overwriting means that, when it is detected that the impact of the vehicle is equal to or more than a predetermined threshold, the predetermined image recorded before the detection is not erased by overwriting. Characteristic recording device. In a recording device having a function of overwriting a video captured in a vehicle on a recorded video,
A function of suppressing the overwriting when the impact of the vehicle is detected to be equal to or greater than a predetermined threshold ,
With continuous recording function and
Suppressing the overwrite state, and are to ensure that a predetermined image recorded before the detection does not disappear by overwriting,
The overwrite recording is performed on the recorded video of the continuous recording function,
The recording device, wherein the predetermined video is a video that has been recorded by the continuous recording function. The image recording apparatus according to claim 5 , further comprising: an event recording function that prevents recording on a recording medium on which the video of the continuous recording function is recorded when the impact equal to or greater than the threshold is detected. Recording device. It impact of the vehicle is above a predetermined threshold value, any one of claims 4 to 6, characterized in that either direction of the impact direction of the three axes is not less than a predetermined threshold value The recording device according to claim 1. In a recording device having a function of overwriting a video captured in a vehicle on a recorded video,
When the impact of the vehicle is detected to be equal to or more than a predetermined threshold, a function of suppressing the overwrite is provided,
Suppressing the overwrite state, and are to ensure that a predetermined image recorded before the detection does not disappear by overwriting,
After being powered off before recording system is also when the power is supplied, the recording apparatus, characterized in that as the predetermined image does not disappear by overwriting. In a recording device having a function of overwriting a video captured in a vehicle on a recorded video,
When the impact of the vehicle is detected to be equal to or more than a predetermined threshold, a function of suppressing the overwrite is provided,
Suppressing the overwrite state, and are to ensure that a predetermined image recorded before the detection does not disappear by overwriting,
A recording apparatus, wherein when the traveling of the vehicle is started after the predetermined image is not erased by overwriting, the predetermined image can be overwritten. Program for realizing the functions of the recording apparatus according to a computer in any one of claims 1 to 9.

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