WO2021255810A1

WO2021255810A1 - Recording control device, drive recorder, and recording control method

Info

Publication number: WO2021255810A1
Application number: PCT/JP2020/023494
Authority: WO
Inventors: 史郎小倉
Original assignee: 三菱電機株式会社
Priority date: 2020-06-16
Filing date: 2020-06-16
Publication date: 2021-12-23

Abstract

The present invention comprises: a vehicle state data acquisition unit (111) that acquires vehicle state data; a vehicle data acquisition unit (112) that acquires vehicle data; a data determination unit (121) that performs a determination, based on the vehicle data, of whether the vehicle state data is normal recording data recorded during normal operation, or event recording data recorded when an abnormality has occurred in the vehicle; and a data recording control unit (13) that, based on the determination result determined by the data determination unit (121) of whether the vehicle state data is normal recording data or event recording data, records the vehicle state data in a first recording physical area (211) among a plurality of recording physical areas, or in a second recording physical area (221) in which wear leveling is performed independently of the first recording physical area (211).

Description

Recording control device, drive recorder, and recording control method

The present disclosure relates to a recording control device, a drive recorder provided with the recording control device, and a recording control method.

Conventionally, the drive recorder records data related to the vehicle condition on a recording medium. Here, the data related to the vehicle condition is video data or audio data, or both video data and audio data. The data recorded on the recording medium by the drive recorder includes data that is constantly recorded and data that is recorded when an abnormality occurs in the vehicle. Hereinafter, the data that is constantly recorded is referred to as "constantly recorded data". Further, the data recorded when an abnormality occurs in the vehicle is called "event record data". It should be noted that the event record data needs to be prevented from being automatically overwritten so that the user can later confirm the situation when an abnormality occurs in the vehicle. In such a conventional drive recorder, there is known a technique for logically separating a recording area for constantly recorded data on a recording medium and a recording area for event recording data (for example, Patent Document 1).

Japanese Unexamined Patent Publication No. 2001-106123

The recording medium used in the drive recorder as described above deteriorates as the number of writes increases. Therefore, in general, in a recording medium, control that the number of writes to each memory cell is equalized by dynamically converting the memory address so that the data is overwritten evenly, so-called wear leveling. Is done. Wear leveling is performed on the entire memory of the recording medium.
Therefore, even if the recording area where the constant recording data is recorded and the recording area where the event recording data is recorded are logically separated as in the prior art, the continuous recording data or the event recording data is written. As a result, the entire memory of the recording medium deteriorates evenly. Then, the recording medium reaches the end of the life of the entire memory at the same timing. As a result, the entire memory of the recording medium cannot be used at the same timing, and there is a problem that the event recording data is not recorded by the drive recorder until the recording medium is replaced.

This disclosure is made to solve the above-mentioned problems, and it is intended to prevent the drive recorder from falling into a situation where event recording data is not recorded due to the end of the memory of the recording area. The purpose.

The record control device according to the present disclosure is a record control device for performing record control of data in a drive recorder, and has a vehicle status data acquisition unit that acquires vehicle status data related to a situation outside the vehicle and a vehicle data related to the vehicle. Based on the vehicle data acquisition unit to be acquired and the vehicle data acquired by the vehicle data acquisition unit, the vehicle status data acquired by the vehicle status data acquisition unit is always recorded data, or an abnormality has occurred in the vehicle. Based on the data judgment unit that determines whether the event record data is to be recorded at the time, and the judgment result of whether the vehicle status data is the constant recording data or the event recording data determined by the data judgment unit, the vehicle concerned. Data recording control for recording status data in the first recording physical area or the second recording physical area where wear leveling is performed independently of the first recording physical area among a plurality of recording physical areas. It is equipped with a part.

According to the present disclosure, it is possible to prevent the drive recorder from falling into a situation where event recording data is not recorded due to the end of the memory of the recording area.

It is a figure which shows the structural example of the drive recorder provided with the recording control apparatus which concerns on Embodiment 1. FIG. FIG. 2A is a diagram for explaining a recording image of constantly recorded data or event recording data recorded in a recording area by a recording control device according to the first embodiment, and FIG. 2A shows a recording image of constantly recorded data. 2B shows a recorded image of event recorded data. It is a flowchart for demonstrating the operation which the recording control apparatus which concerns on Embodiment 1 record vehicle condition data on a recording medium. It is a figure for demonstrating the image of the recording area of a general recording medium which was logically divided. In Embodiment 1, it is a flowchart for demonstrating operation of the record control device when the record control device performs record control of vehicle condition data by another record control method. 6A and 6B are diagrams showing an example of the hardware configuration of the recording control device according to the first embodiment.

Hereinafter, embodiments of the present disclosure will be described in detail with reference to the drawings.
Embodiment 1.
FIG. 1 is a diagram showing a configuration example of a drive recorder 100 including the recording control device 1 according to the first embodiment.
The drive recorder 100 is mounted on a vehicle (not shown) and includes a recording control device 1 and a recording medium 2. The drive recorder 100 is connected to a camera 200, a microphone 300, a vehicle sensor 400, and an output device 500.

The camera 200 includes a camera 200 that captures a situation inside the vehicle and a camera 200 that captures a situation outside the vehicle. In FIG. 1, the camera 200 is provided outside the drive recorder 100, but this is only an example. The camera 200 may be provided in the drive recorder 100, for example. Further, the camera 200 may be shared with, for example, a so-called "driver monitoring system (DMS)".
The camera 200 records a captured image (hereinafter referred to as "in-vehicle captured image") of an image of the inside of the vehicle and an captured image (hereinafter referred to as "outside captured image") of an image of the situation outside the vehicle. Output to 1. In the following description, the image captured inside the vehicle and the image captured outside the vehicle are collectively referred to as "video data".

The microphone 300 is installed inside or outside the vehicle and collects the brake sound, the collision sound, the voice of the occupant, and the like of the vehicle. In FIG. 1, the microphone 300 is provided outside the drive recorder 100, but this is only an example. The microphone 300 may be provided in the drive recorder 100, for example.
The microphone 300 outputs the collected sound or data related to voice (hereinafter referred to as “voice data”) to the recording control device 1.

The vehicle sensor 400 is a sensor mounted on a vehicle and detecting data related to the vehicle. Specifically, the vehicle sensor 400 includes an acceleration sensor that detects the acceleration of the vehicle, an impact sensor that detects the impact of the vehicle, a brake sensor that detects the brake opening degree, a steering angle sensor that detects the steering angle of the steering wheel, and the like. include. The vehicle sensor 400 outputs the detected acceleration, impact, brake opening degree, data on the steering angle of the steering wheel, and the like to the recording control device 1. In the first embodiment, the data related to the acceleration, impact, brake opening degree, steering angle, and the like detected by the vehicle sensor 400 are collectively referred to as "vehicle data".
In FIG. 1, the vehicle sensor 400 is provided outside the drive recorder 100, but this is only an example. For example, among the vehicle sensors 400, the acceleration sensor or the impact sensor may be provided in the drive recorder 100.

The recording control device 1 acquires the video data output from the camera 200 or the audio data output from the microphone 300. In the first embodiment, the data acquired by the recording control device 1 are collectively referred to as "vehicle condition data". The "vehicle condition data" includes at least one of the video data output from the camera 200 and the audio data output from the microphone 300. The "vehicle condition data" may include both video data and audio data.
Further, the recording control device 1 acquires vehicle data from the vehicle sensor 400.
When the recording control device 1 acquires the vehicle status data, the recording control device 1 records the vehicle status data on the recording medium 2. The recording control device 1 determines whether the vehicle status data is constantly recorded data or event recording data with respect to the vehicle status data, and records the vehicle status data on the recording medium 2 based on the determination result. Control recording to the area.

Generally, the vehicle status data recorded on the recording medium 2 in the drive recorder 100 includes constant recording data and event recording data. The constantly recorded data and the event recorded data are both video data and audio data, or both video data and audio data, but the constantly recorded data is data that can be continuously recorded during the operation of the drive recorder 100. The event record data is data recorded when an abnormality occurs in the vehicle.

The recording control device 1 detects that an abnormality has occurred in the vehicle based on the vehicle data acquired from the vehicle sensor 400. The recording control device 1 determines whether the vehicle status data acquired from the camera 200 or the microphone 300 is constantly recorded data or event recorded data, depending on whether or not it has been detected that an abnormality has occurred in the vehicle.
In the first embodiment, "an abnormality has occurred in the vehicle" specifically means that, for example, an abnormal acceleration or impact is applied to the vehicle. The recording control device 1 detects that an abnormality has occurred in the vehicle, for example, when the acceleration data included in the vehicle data is equal to or higher than a preset threshold value (hereinafter referred to as “acceleration determination threshold value”). do. Further, in the recording control device 1, for example, when the impact data included in the vehicle data is equal to or higher than a preset threshold value (hereinafter referred to as “impact determination threshold value”), an abnormality has occurred in the vehicle. You may detect that. The recording control device 1 may detect that an abnormality has occurred in the vehicle by an appropriate method based on the vehicle data.

The recording control device 1 records the vehicle status data in the first recording physical possessed by the first recording medium 21 based on the determination result of determining whether the vehicle status data is constantly recorded data or event recording data. It controls whether to record in the area 211 or the second recording physical area 221 of the second recording medium 22. The details of the recording control of the vehicle condition data performed by the recording control device 1 will be described later.

As shown in FIG. 1, the recording medium 2 includes a first recording medium 21 and a second recording medium 22. In the first embodiment, the first recording medium 21 and the second recording medium 22 are separate recording media 2, and for example, two SD cards are assumed.
The first recording medium 21 and the second recording medium 22 have a first recording physical area 211 and a second recording physical area 221 inside, respectively. In the first embodiment, the recording physical area having the larger capacity among the two recording physical areas is referred to as the first recording physical area 211. It is desirable that the capacity of the first recording physical area 211 is larger than the capacity of the second recording physical area 221. However, the capacity of the first recording physical area 211 and the capacity of the second recording physical area 221 May be the same size. The capacity of the first recording physical area 211 may be equal to or larger than the capacity of the second recording physical area 221. The ratio of the capacity of the first recording physical area 211 to the capacity of the second recording physical area 221 can be appropriately set.
In the first embodiment, the first recording physical area 211 or the second recording physical area 221 is also simply referred to as a "recording area".

The first recording medium 21 performs wear leveling in the first recording physical area 211. Further, the second recording medium 22 performs wear leveling in the second recording physical area 221.
In the recording medium 2 such as an SD card, a NAND flash memory is generally used as a memory element. Since the characteristics of the NAND flash memory deteriorate due to data writing, there is a problem that the number of times the memory cell can be written is limited in the recording medium 2 in which the NAND flash memory is used. In other words, the recording medium 2 in which the NAND flash memory is used has a problem that the memory has a limited life. Therefore, in the recording medium 2 such as an SD card in which the NAND flash memory is used, the logical address and the physical address are dynamically converted inside the recording medium 2, and the number of times of writing to each memory cell in the entire recording medium 2 is performed. We perform so-called wear leveling so that the numbers are even. This has the effect of extending the life of the memory. In the first embodiment, the first recording medium 21 and the second recording medium 22 also perform such general wear leveling.

Note that, in the first embodiment, as described above, it is assumed that the first recording medium 21 and the second recording medium 22 are separate recording media 2, but this is only an example. As long as the internal recording area can be physically divided and used, one recording medium 2 itself may be used. However, in that case, wear leveling shall be performed independently in each recording area that is physically divided and used.

Here, FIG. 2 is a diagram for explaining a recording image of continuous recording data or event recording data recorded in the recording area by the recording control device 1 in the first embodiment. FIG. 2A shows a recorded image of constantly recorded data, and FIG. 2B shows a recorded image of event recorded data.

In the recording medium 2, in the continuous recording data recording area, the constant recording data is sequentially written, and when the recording area becomes full, the oldest continuous recording data is overwritten. (See FIG. 2A). In FIG. 2A, the constantly recorded data N is shown as the latest constantly recorded data, and the constantly recorded data N-59 is shown as the oldest constantly recorded data. In the state of the recording area as shown in FIG. 2A, the constantly recorded data to be recorded next to the constantly recorded data N is overwritten on the portion of the constantly recorded data N-59. It should be noted that each of the constantly recorded data N to N-59 is, for example, one minute of constantly recorded data, and in FIG. 2A, 60 pieces of constantly recorded data in the entire recording area of the constantly recorded data, that is, for the past one hour. Shows the image in which the constantly recorded data of is recorded.

On the other hand, in the recording medium 2, in the event recording data recording area, the event recording data is written only when it becomes necessary to record the event recording data. FIG. 2B shows an image in which two event recording data (event recording data K and event recording data K-1) are recorded as an example.
Since the frequency of occurrence of event recording data is generally low, a recording area having a capacity smaller than the capacity of the recording area of constant recording data is allocated to the recording area of event recording data. Further, as described above, the event record data is vehicle status data when an abnormality occurs in the vehicle, and is important data such that the user needs to confirm the status when an abnormality occurs in the vehicle later. .. Therefore, the recording control device 1 prevents the event recording data from being automatically overwritten in the recording area.

In the first embodiment, the recording control device 1 is physically divided, and FIG. 2 is shown in either the first recording physical area 211 or the second recording physical area 221 in which wear leveling is independently performed. The constant recording data or the event recording data is recorded by the recording method as described in the image.

Further, the recording control device 1 can also read out the vehicle status data recorded on the recording medium 2 and output it to the output device 500. Further, the recording control device 1 can also output information for promoting the effect of the first recording medium 21 or the second recording medium 22 (hereinafter referred to as “exchange promotion information”) to the output device 500. Details of the record control device 1 for outputting vehicle status data or exchange promotion information will be described later.

The output device 500 is, for example, a display or a speaker mounted on a vehicle. In FIG. 1, the output device 500 is provided outside the drive recorder 100, but this is only an example. The output device 500 may be provided in, for example, the drive recorder 100.
The output device 500 outputs various data output from the recording control device 1. For example, when the vehicle status data is output from the recording control device 1, the output device 500 outputs video or audio, or both video and audio based on the vehicle status data. Further, for example, when the exchange promotion information is output from the recording control device 1, the output device 500 outputs video or audio, or both video and audio based on the exchange promotion information. For example, when the output device 500 is a display, the display displays based on the vehicle status data or exchange promotion information output from the recording control device 1. Further, for example, when the output device 500 is a speaker, the speaker outputs voice based on the vehicle status data or exchange promotion information output from the recording control device 1.
The recording control device 1 outputs data such as an electric signal to a device other than the output device 500, and outputs the data such as an electric signal to a device other than the output device 500 as video, audio, or video. After converting to both of the audio, the converted video or audio, or both the video and audio may be output by the output device 500.

Returning to FIG. 1, the configuration of the recording control device 1 according to the first embodiment will be described in detail.
The recording control device 1 includes a data acquisition unit 11, a data recording control unit 12, and an output control unit 13.
The data acquisition unit 11 includes a vehicle status data acquisition unit 111 and a vehicle data acquisition unit 112. The data recording control unit 12 includes a data determination unit 121.

The data acquisition unit 11 acquires various data.
The vehicle status data acquisition unit 111 of the data acquisition unit 11 acquires vehicle status data at least related to the situation outside the vehicle. The vehicle status data acquisition unit 111 may be adapted to acquire vehicle status data regarding the conditions outside and inside the vehicle. Specifically, the vehicle status data acquisition unit 111 receives both the video data captured by the camera 200 or the audio data collected by the microphone 300, or the video data captured by the camera 200 and the audio data collected by the microphone 300. Acquired as vehicle status data.
The vehicle status data acquisition unit 111 outputs the acquired vehicle status data to the data recording control unit 12. Further, the vehicle status data acquisition unit 111 causes the data storage unit (not shown) to record the acquired vehicle status data. The data storage unit is provided in, for example, the recording control device 1. The data storage unit may be provided in a place outside the recording control device 1 where the recording control device 1 can be referred. The data storage unit temporarily stores vehicle status data for a predetermined period (hereinafter referred to as "recording period"). When the recording period elapses, the vehicle status data stored in the data storage unit is deleted by the data recording control unit 12. It is assumed that the vehicle status data acquired by the vehicle status data acquisition unit 111 is provided with information regarding the acquisition date and time of the vehicle status data. Alternatively, when the vehicle status data acquisition unit 111 acquires the vehicle status data, information regarding the acquisition date and time may be added. The data recording control unit 12 may specify the vehicle status data to be deleted from the information regarding the acquisition date and time given to the vehicle status data.

The vehicle data acquisition unit 112 of the data acquisition unit 11 acquires vehicle data related to the vehicle. Specifically, the vehicle data acquisition unit 112 acquires vehicle data regarding acceleration, impact, brake opening degree, or steering angle detected by the vehicle sensor 400.
The vehicle data acquisition unit 112 outputs the acquired vehicle data to the data recording control unit 12.

The data recording control unit 12 records the vehicle status data acquired by the data acquisition unit 11 in either the first recording physical area 211 or the second recording physical area 221.
More specifically, first, the data determination unit 121 of the data recording control unit 12 constantly records the vehicle status data acquired by the vehicle status data acquisition unit 111 based on the vehicle data acquired by the vehicle data acquisition unit 112. It is determined whether the data is recorded data or event recorded data to be recorded when an abnormality occurs in the vehicle.

To give a specific example, the data determination unit 121 detects, for example, that an abnormality has occurred in the vehicle when the acceleration data included in the vehicle data is equal to or greater than the acceleration determination threshold value. Further, the data determination unit 121 detects that an abnormality has occurred in the vehicle, for example, when the impact data included in the vehicle data is equal to or higher than the impact determination threshold value. When the data determination unit 121 detects that an abnormality has occurred in the vehicle, the data determination unit 121 determines that the vehicle condition data acquired by the vehicle condition data acquisition unit 111 is event record data.
On the other hand, if the data determination unit 121 does not detect that an abnormality has occurred in the vehicle, the data determination unit 121 determines that the vehicle condition data acquired by the vehicle condition data acquisition unit 111 is always recorded data.

The data determination unit 121 outputs to the data recording control unit 12 the determination result of whether the vehicle status data is determined to be constantly recorded data or event recording data. Hereinafter, the vehicle status data determined to be constantly recorded data by the data determination unit 121 is also simply referred to as "always recorded data", and the vehicle status data determined to be event recording data by the data determination unit 121 is simply referred to as "event". Also called "recorded data".

The data recording control unit 12 records the constantly recorded data in the first recording physical area 211. At this time, the data recording control unit 12 may record the continuous recording data in the first recording physical area 211 at preset time intervals (hereinafter referred to as “constant recording set time”). The constant recording set time is, for example, 1 minute.

On the other hand, the data recording control unit 12 records the event recording data in the second recording physical area 221. At this time, the data recording control unit 12 together with the event recording data is referred to as a preset time from the time when the data determination unit 121 detects that an abnormality has occurred in the vehicle (hereinafter referred to as “setting time before abnormality occurrence”). ) A preset time from the vehicle status data acquired by the vehicle status data acquisition unit 111 retroactively and the time when an abnormality is detected in the vehicle (hereinafter referred to as "set time after the abnormality occurs"). ) The vehicle status data acquired by the vehicle status data acquisition unit 111 by the time it has elapsed may be recorded in the second recording physical area 221. The set time before the occurrence of an abnormality is, for example, 30 seconds. The set time after the occurrence of an abnormality is, for example, 15 seconds.

The data recording control unit 12 may acquire the vehicle status data acquired retroactively from the time when the abnormality is detected to the set time before the abnormality occurrence from the data storage unit. Information regarding the acquisition date and time of the vehicle status data is added to the vehicle status data. In the first embodiment, it is assumed that the recording time is set to be longer than the abnormality occurrence set time. Further, the data recording control unit 12 obtains vehicle status data acquired from the time when the abnormality is detected until the set time elapses after the abnormality occurs from the data storage unit after the set time elapses after the abnormality occurs. You just have to get it.

Here, the data recording control unit 12 repeatedly records the constantly recorded data in the first recording physical area 211, in other words, repeatedly writes the constantly recorded data to the memory area of the first recording physical area 211. , The memory of the first recording physical area 211 reaches the end of its life. As described above, the ratio of the capacity of the first recording physical area 211 to the capacity of the second recording physical area 221 can be appropriately set, but the first recording physical area 211 in which the writing of the constantly recorded data is repeated is repeated. The capacity ratio is set so that the memory reaches the end of its life first.

When the data recording control unit 12 cannot constantly record the recorded data in the first recording physical area 211, the data recording control unit 12 determines that the memory of the first recording physical area 211 has reached the end of its life.
Even if the data recording control unit 12 cannot constantly record the recorded data in the first recording physical area 211, the data recording control unit 12 records the event recording data in the second recording physical area 221. Recording of the event recording data can be continued. That is, even if the memory of the first recording physical area 211 reaches the end of its life, the event recording data cannot be recorded and is not lost.

When the data recording control unit 12 determines that the memory of the first recording physical area 211 has reached the end of its life, information indicating that the memory of the first recording physical area 211 has reached the end of its life (hereinafter, "first area life"). "Arrival information") is output to the output control unit 13.

Further, when the data recording control unit 12 receives, for example, an output instruction of the vehicle status data recorded on the recording medium 2 from the user, the data recording control unit 12 acquires the vehicle status data from the recording medium 2 in accordance with the output instruction. Specifically, the reception unit (not shown) included in the recording control device 1 receives the output instruction. For example, the user operates a button (not shown) installed in the drive recorder 100 to specify desired vehicle status data and input an output instruction. For example, the user specifies the desired vehicle status data by designating the date and time when the vehicle status data was acquired. The reception unit receives an output instruction input by the user. The output instruction includes information on the date and time when the vehicle status data is specified. The reception unit outputs the received output instruction to the data recording control unit 12. For example, the data recording control unit 12 includes information on the date and time for designating the vehicle status data included in the output instruction, and the vehicle status recorded in the first recording physical area 211 or the second recording physical area 221. The information of the acquisition date and time given to the data is compared, and the matching vehicle status data is acquired from the first recording physical area 211 or the second recording physical area 221. Then, the data recording control unit 12 outputs the acquired vehicle condition data to the output control unit 13.

When the data recording control unit 12 outputs the first area life arrival information, the output control unit 13 outputs the exchange promotion information to the output device 500. Specifically, when the output device 500 is a display, the output control unit 13 outputs exchange promotion information by displaying a message such as "Please replace the SD card". Note that this is only an example, and for example, the output control unit 13 may display an icon prompting the replacement of the recording medium 2 on the display, or may make the display blink.
When the output device 500 is a speaker, the output control unit 13 outputs exchange promotion information by, for example, outputting a voice message "Please replace the SD card" by voice. Note that this is only an example, and for example, the output control unit 13 may output a buzzer sound from the speaker or may play a melody prompting the exchange.
The output control unit 13 may be configured to urge the user to exchange the recording medium 2 by outputting the exchange promotion information.

The operation of the recording control device 1 according to the first embodiment will be described.
FIG. 3 is a flowchart for explaining an operation in which the recording control device 1 according to the first embodiment records vehicle condition data on the recording medium 2. When the power is turned on, the recording control device 1 performs the operation shown in the flowchart shown in FIG.

The data acquisition unit 11 acquires various data (step ST301).
Specifically, the vehicle status data acquisition unit 111 of the data acquisition unit 11 acquires vehicle status data at least related to the situation outside the vehicle. The vehicle status data acquisition unit 111 may be adapted to acquire vehicle status data regarding the conditions outside and inside the vehicle. The vehicle status data acquisition unit 111 outputs the acquired vehicle status data to the data recording control unit 12, and causes the data storage unit to record the acquired vehicle status data.
Further, the vehicle data acquisition unit 112 of the data acquisition unit 11 acquires vehicle data related to the vehicle. The vehicle data acquisition unit 112 outputs the acquired vehicle data to the data recording control unit 12.

The data determination unit 121 of the data recording control unit 12 is constantly recorded data in which the vehicle status data acquired by the vehicle status data acquisition unit 111 is constantly recorded based on the vehicle data acquired by the vehicle data acquisition unit 112 in step ST301. It is determined whether or not the data is event record data to be recorded when an abnormality occurs in the vehicle (step ST302).
The data determination unit 121 outputs to the data recording control unit 12 a determination result of whether the vehicle status data is determined to be constantly recorded data or event recording data.

The data recording control unit 12 uses the vehicle status data as the first unit based on the determination result of whether the vehicle status data is the constant recording data or the event recording data determined by the data determination unit 121 in step ST302. Recording control for recording in either the recording physical area 211 or the second recording physical area 221 is performed (step ST303).
Specifically, when the data recording control unit 12 determines that the vehicle status data is the constant recording data by the data determination unit 121, the data recording control unit 12 records the constant recording data in the first recording physical area 211. On the other hand, when the data recording control unit 12 determines that the vehicle status data is event recording data by the data determination unit 121, the data recording control unit 12 records the event recording data in the second recording physical area 221.

When the data recording control unit 12 performs recording control for recording the constantly recorded data in the first recording physical area 211 in step ST303, whether or not the constantly recorded data can be recorded in the first recording physical area 211. (Step ST304).
When it is determined in step ST304 that the constant recording data cannot be recorded in the first recording physical area 211 (in the case of "NO" in step ST304), the data recording control unit 12 of the first recording physical area 211 It is determined that the memory has reached the end of its life. The data recording control unit 12 outputs the first area life arrival information to the output control unit 13. Then, the operation of the recording control device 1 proceeds to step ST305.

On the other hand, unless the data recording control unit 12 performs recording control for recording the constantly recorded data in the first recording physical area 211 in step ST303, the data recording control unit 12 constantly records in the first recording physical area 211 in step ST304. It is determined that the data has been recorded (in the case of "YES" in step ST304), and the operation of the recording control device 1 returns to step ST301.
When the data recording control unit 12 controls to record the event recording data in the second recording physical area 221 in step ST303, it is determined that the constant recording data can be recorded in the first recording physical area 211. The operation of the recording control device 1 returns to step ST301.

When the data recording control unit 12 outputs the first area life arrival information in step ST304, the output control unit 13 outputs the exchange promotion information to the output device 500 (step ST305). Then, the operation of the recording control device 1 returns to step ST301.

As described above, in the recording control device 1, the vehicle status data acquired from the camera 200 or the microphone 300 based on the vehicle data acquired from the vehicle sensor 400 is constantly recorded data, or an abnormality occurs in the vehicle. It is judged whether it is the event record data to be recorded at the time of the event. Then, the recording control device 1 performs wear leveling of the vehicle status data independently based on the determination result of whether the vehicle status data is the constant recording data or the event recording data, the first recording physics. Record in either area 211 or the second recording physical area 221.

For example, in the data recording control technique in the conventional drive recorder as described above, the continuous recording data recording area (first) is applied to a single recording medium 2A such as an SD card as shown in FIG. The recording logic area 211A) and the event recording data recording area (second recording logic area 221A) are logically divided. Even in the conventional recording control technique, the recording image of the constant recording data or the event recording data is the same as the recording image described with reference to FIG. However, in the conventional recording control technology, it is premised that the recording area to which the constant recording data or the event recording data is recorded is a logically divided recording logic area as described above.
Further, as described above, in general, the recording medium 2A performs wear leveling in order to extend the life of the memory cell.
In the conventional data recording control technique, the recording area where the constant recording data or the event recording data is recorded is not physically divided even if it is logically divided in the recording medium 2A. Therefore, wear leveling is performed on the entire memory cell of the recording area in the recording medium 2A, that is, the first recording logic area 211A and the second recording logic area 221A. Due to the wear leveling, the memory cells of the first recording logic area 211A and the second recording logic area 221A are uniformly deteriorated as a whole. Then, when the life of the memory is reached, there is a high possibility that any memory cell is in a state in which it cannot be written. As a result, in the conventional drive recorder, when the memory of the recording area of the recording medium 2A reaches the end of its life, event recording data can be recorded even if an abnormality occurs in the vehicle until the recording medium 2A is replaced. It did not play its most important role as a drive recorder.

On the other hand, the recording control device 1 according to the first embodiment records vehicle status data in the physically divided first recording physical area 211 or the second recording physical area 221 in the drive recorder 100. .. Wear leveling is independently performed for the first recording physical area 211 and the second recording physical area 221.
The recording control device 1 controls the recording of vehicle status data so as to make a difference between the number of writes in the first recording physical area 211 and the second recording physical area 221, in other words, the time when the memory reaches the end of its life. conduct. The recording control device 1 can continue recording the event recording data in the second recording physical area 221 even when the memory of the first recording physical area 211 reaches the end of its life. As a result, the recording control device 1 does not fall into a situation in which the event recording data is not recorded due to the end of the life of the memory of the recording area and the first recording physical area 211 in the first embodiment in the drive recorder. can do. Until the recording medium 2 is replaced, the drive recorder 100 may not be able to record event recording data when an abnormality occurs in the vehicle, and may not play the most important role as a drive recorder. Can be reduced.

In the above embodiment 1, when the data recording control unit 12 determines that the memory of the first recording physical area 211 has reached the end of its life, the recording destination of the constant recording data is set from the first recording physical area 211. It may be changed to the second recording physical area 221. When the recording destination of the constantly recorded data is changed from the first recording physical area 211 to the second recording physical area 221, the data recording control unit 12 is, for example, a data recording control unit inside the recording control device 1. The recording destination change flag "1" is set in a place where 12 can be referred. The recording destination change flag is initialized by the control unit (not shown) when the recording medium 2 is replaced, in other words, it is set to "0".
When the data recording control unit 12 determines that the memory of the first recording physical area 211 has reached the end of its life according to the operation shown in the flowchart shown in FIG. 3, the recording destination of the constantly recorded data is set to the first recording destination. The operation when the recording physical area 211 is changed to the second recording physical area 221 will be described. Since there is no change in the specific operations of step ST301 and step ST302 in FIG. 3, duplicated description will be omitted.

When the data recording control unit 12 controls the recording of the constantly recorded data in step ST303, the data recording control unit 12 also refers to the recording destination change flag to determine the recording destination of the vehicle status data.
Specifically, when the data recording control unit 12 records the continuous recording data, if the recording destination change flag is "1", the data recording control unit 12 records the constant recording data in the second recording physical area 221. .. The fact that the recording destination change flag is "1" means that the memory of the first recording physical area 211 has already reached the end of its life, and the data recording control unit 12 sets the recording destination of the constantly recorded data to the second. This is to indicate that the recording physical area 221 has been changed.
For example, after the memory of the first recording physical area 211 reaches the end of its life and the data recording control unit 12 changes the recording destination of the constantly recorded data to the second recording physical area 221, the constantly recorded data is recorded in the second. It is assumed that the power of the recording control device 1 is turned off while recording in the physical area 221. Then, it is assumed that the power of the recording control device 1 is turned on again without replacing the recording medium 2. In this case, since the recording destination change flag is set to "1", the data recording control unit 12 continues to record the continuous recording data in the second recording physical area 221 when the power is turned off last time. do.

If the recording destination change flag is "0", the data recording control unit 12 records the constantly recorded data in the first recording physical area 211.
For example, when the power of the recording control device 1 is turned on for the first time, or when the memory of the first recording physical area 211 has not reached the end of its life when the power of the recording control device 1 is turned off last time. "0" is set in the recording destination change flag. In this case, the data recording control unit 12 records the constant recording data in the first recording physical area 211.

Regarding the event recording data, the data recording control unit 12 records the event recording data in the second recording physical area 221 regardless of the set value of the recording destination change flag.

When the data recording control unit 12 performs recording control for recording the constantly recorded data in the first recording physical area 211 in step ST303, whether or not the constantly recorded data can be recorded in the first recording physical area 211. (Step ST304).
When it is determined in step ST304 that the constant recording data cannot be recorded in the first recording physical area 211 (in the case of "NO" in step ST304), the data recording control unit 12 of the first recording physical area 211 It is determined that the memory has reached the end of its life. The data recording control unit 12 outputs the first area life arrival information to the output control unit 13.
At this time, the data recording control unit 12 changes the recording destination of the constantly recorded data from the first recording physical area 211 to the second recording physical area 221. Then, the data recording control unit 12 sets the recording destination change flag “1”. Then, the operation of the recording control device 1 proceeds to step ST305. Since the specific operation of step ST305 is the same as the operation described, duplicate description will be omitted.
In step ST304, the operations after the case where the data recording control unit 12 determines that the continuous recording data can be recorded in the first recording physical area 211 (when “YES” in step ST304) are the described operations. Therefore, duplicate explanations will be omitted.
When the data recording control unit 12 controls to record the constantly recorded data in the second recording physical area 221 in step ST303, it is said that the constantly recorded data can be recorded in the first recording physical area 211. to decide.

As a result, the recording control device 1 can continue recording the constantly recorded data when the memory of the first recording physical area 211 reaches the end of its life, and can prevent the constantly recorded data from being lost.

Further, after the data recording control unit 12 changes the recording destination of the constantly recorded data from the first recording physical area 211 to the second recording physical area 221, the vehicle status data acquisition unit 111 of the data acquisition unit 11 acquires the data. The vehicle condition data may be recorded in the second recording physical area 221 by lowering the resolution of the vehicle condition data. At that time, the data recording control unit 12 may record only the constantly recorded data at a reduced resolution, or may record at a reduced resolution of both the constantly recorded data and the event recording data. The data recording control unit 12 may at least reduce the resolution of the constantly recorded data having a large amount of writing.
As a result, the recording control device 1 can extend the life of the memory of the second recording physical area 221. As a result, as a result, the recording control device 1 can reduce the possibility of failing to record the vehicle condition data. In addition, the user will be able to exchange the recording medium 2 with sufficient time.

Further, in the above-described first embodiment, the data recording control unit 12 first sets the recording destination of the constantly recorded data as the first recording physical area 211 and the recording destination of the event recording data as the second recording physical area 221. Recording control is to be performed. This is only an example, and the data recording control unit 12 can also perform recording control of vehicle status data by other methods, and will be described below. Since the configuration of the recording control device 1 in the case of the following other data recording control method is the same as the configuration described with reference to FIG. 1, duplicate description will be omitted.

For example, in the recording control device 1, the first recording physical area 211 is used as the main recording area, and the second recording physical area 221 is used as the spare recording area to control the recording of constant recording data and event recording data. You may.
Specifically, the data recording control unit 12 records the continuous recording data and the event recording data in the first recording physical area 211 until the data recording becomes impossible in the first recording physical area 211. .. When the data recording control unit 12 records the continuous recording data and the event recording data in the first recording physical area 211, the data recording control unit 12 sets a used area flag indicating that the first recording physical area is used. The used area flag is set, for example, in a place inside the recording control device 1 where the data recording control unit 12 can refer to. For example, the data recording control unit 12 sets "1" as a used area flag indicating that the first recording physical area 211 is used. The used area flag is initialized by the control unit when the recording medium 2 is replaced, in other words, it is set to "0".

When the data recording control unit 12 determines that the constant recording data and the event recording data cannot be recorded in the first recording physical area 211, it determines that the memory of the first recording physical area 211 has reached the end of its life. .. Then, the data recording control unit 12 changes the recording destination of the constant recording data and the event recording data from the first recording physical area 211 to the second recording physical area 221. At this time, the data recording control unit 12 updates the used area flag to the used area flag indicating that the second recording physical area 221 is used. For example, the data recording control unit 12 sets “2” as the used area flag.
Further, the data recording control unit 12 outputs the first area life arrival information to the output control unit 13. When the data recording control unit 12 outputs the first area life arrival information, the output control unit 13 outputs the exchange promotion information.

FIG. 5 is a flowchart for explaining the operation of the recording control device 1 when the recording control device 1 performs recording control of vehicle status data by another recording control method in the first embodiment. When the power is turned on, the recording control device 1 performs the operation shown in the flowchart shown in FIG.
In the following operation description, it is assumed that the first recording medium 21 and the second recording medium 22 are both unused recording media 2.
In FIG. 5, the specific operations of step ST501, step ST502, and step ST507 are the same as the specific operations of step ST301, step ST302, and step ST305 described with reference to FIG. 3, respectively. , Omit duplicate explanations.

The data recording control unit 12 uses the vehicle status data as the first unit based on the determination result of whether the vehicle status data is the constant recording data or the event recording data determined by the data determination unit 121 in step ST502. Recording control for recording in either the recording physical area 211 or the second recording physical area 221 is performed (step ST503).
Specifically, the data recording control unit 12 determines the recording destination of the vehicle status data from the used area flag. However, for example, when the first recording medium 21 and the second recording medium 22 are used by the drive recorder 100 for the first time, the initial value "0" is set in the used area flag. Now, since it is assumed that the first recording medium 21 and the second recording medium 22 are both unused recording media 2, the used area flag is set to "0". When the used area flag is set to "0", the data recording control unit 12 records the continuous recording data and the event recording data in the first recording physical area 211. Then, the data recording control unit 12 sets a usage area flag “1” indicating that the first recording physical area is being used.

Subsequently, the data recording control unit 12 determines whether or not the recording destination of the constant recording data and the event recording data is the first recording physical area 211 (step ST504). The data recording control unit 12 may determine the recording destination of the constant recording data and the event recording data from the used area flag.
In step ST504, when the recording destination of the constant recording data and the event recording data is the first recording physical area 211 (when “YES” in step ST504), the operation of the recording control device 1 proceeds to step ST505.
In step ST504, when the recording destination of the constant recording data and the event recording data is the second recording physical area 221 (when “NO” in step ST504), the operation of the recording control device 1 proceeds to step ST507.
Here, since the data recording control unit 12 sets the recording destination of the constant recording data and the event recording data to the first recording physical area 211, the operation of the recording control device 1 proceeds to step ST505.

The data recording control unit 12 determines whether or not the constant recording data and the event recording data can be recorded in the first recording physical area 211 (step ST505).
When it is determined in step ST505 that the constant recording data and the event recording data cannot be recorded in the first recording physical area 211 (in the case of "NO" in step ST505), the data recording control unit 12 performs the first recording. It is determined that the memory of the physical area 211 has reached the end of its life.
Then, the data recording control unit 12 changes the recording destination of the constant recording data and the event recording data from the first recording physical area 211 to the second recording physical area 221 (step ST506). At this time, the data recording control unit 12 updates the used area flag to the used area flag “2” indicating that the second recording physical area 221 is being used.
Further, the data recording control unit 12 outputs the first area life arrival information to the output control unit 13. Then, the operation of the recording control device 1 proceeds to step ST507.

On the other hand, in step ST505, when it is determined that the continuous recording data and the event recording data can be recorded in the first recording physical area 211 (in the case of "YES" in step ST505), the operation of the recording control device 1 is Return to step ST501.

In the above operation description, it is assumed that the first recording medium 21 and the second recording medium 22 are both unused recording media 2. However, the present invention is not limited to this, and for example, the recording control device 1 is turned off while the data recording control unit 12 is recording the continuous recording data and the event recording data in the first recording physical area 211, and the recording control is performed again. The power of the device 1 may be turned on. Further, for example, at the time of the previous activation of the recording control device 1, the data recording control unit 12 changes the recording destination of the constant recording data and the event recording data, and the constant recording data and the event recording data are stored in the second recording physical area 221. The power of the recording control device 1 may be turned off while recording is being performed, and the power of the recording control device 1 may be turned on again without replacing the recording medium 2. The operation of the recording control device 1 in this case will be described below with reference to the flowchart shown in FIG. The operations of steps ST501 and ST502 will be omitted because they are duplicated explanations.

For example, the recording control device 1 is turned off and the recording control device 1 is turned on again while the data recording control unit 12 is recording the continuous recording data and the event recording data in the first recording physical area 211. Suppose. In this case, since "1" is set for the used area flag, in step ST503, the data recording control unit 12 sets the recording destination of the constant recording data and the event recording data to the first recording physical area 211.
Since the recording destination of the vehicle status data is the first recording physical area 211 (in the case of "YES" in step ST504), the operation of the recording control device 1 proceeds to step ST505. Subsequent operations have already been explained and will be omitted.

Further, for example, at the time of the previous activation of the recording control device 1, the data recording control unit 12 changes the recording destination of the constant recording data and the event recording data, and the constant recording data and the event recording data are stored in the second recording physical area 221. It is assumed that the power of the recording control device 1 is turned off while recording in. Then, it is assumed that the power of the recording control device 1 is turned on again without replacing the recording medium 2. In this case, since "2" is set for the used area flag, in step ST503, the data recording control unit 12 sets the recording destination of the vehicle status data to the second recording physical area 221.
Since the recording destination of the vehicle status data is the second recording physical area 221 (in the case of "NO" in step ST504), the operation of the recording control device 1 proceeds to step ST507. Subsequent operations have already been explained and will be omitted.

In the above-mentioned other recording control method in the recording control device 1, the data recording control unit 12 sets the recording destination of the constant recording data and the event recording data from the first recording physical area 211 to the second recording physical area 221. When changing (see step ST506), the time when the second recording physical area 221 reaches the end of its life may be predicted. The time when the life of the second recording physical area 221 is reached is a guideline for the user to replace the recording medium 2.

The data recording control unit 12 determines the time when the life of the second recording physical area 221 is reached, for example, the ratio of the capacity of the first recording physical area 211 to the capacity of the second recording physical area 221 and the first area. It can be calculated from the period taken to reach the end of life. For example, it is assumed that the capacity of the first recording physical area 211 is 7 GB and the capacity of the second recording physical area 221 is 1 GB. Further, it is assumed that the first recording physical area 211 has reached the end of its life after being used for 21 months. The data recording control unit 12 assumes that the drive recorder 100 will be used at the same frequency in the future, and from the calculation result of 21 months × 1/7 = 3 months, the second recording physics is 3 months later. It is predicted that the life of area 221 will be reached. The same frequency means that, for example, the traveling time of the vehicle increases at the same pace as before.
The data recording control unit 12 sets a period in which a margin is provided, for example, two months, in the period predicted by the above formula as the time to reach the end of the life of the second recording physical area 221. You may.
Then, the output control unit 13 may output the life arrival time information regarding the life arrival time predicted by the data recording control unit 12 together with the exchange promotion information (see step ST507).

As described above, even if the recording control of the vehicle condition data is performed by another recording control method, the recording control device 1 writes the number of times in the first recording physical area 211 and the second recording physical area 221. In other words, it is possible to control the recording of vehicle status data so as to make a difference between the time when the life of the memory area is reached.
As a result, the recording control device 1 can continue recording the event recording data in the second recording physical area 221 even when the memory of the first recording physical area 211 reaches the end of its life. As a result, the recording control device 1 does not fall into a situation where the event recording data is not recorded due to the end of the life of the memory of the recording area and the first recording physical area 211 in the first embodiment in the drive recorder. Can be. Until the recording medium 2 is replaced, the drive recorder 100 may not be able to record event recording data when an abnormality occurs in the vehicle, and may not play the most important role as a drive recorder. Can be reduced.

6A and 6B are diagrams showing an example of the hardware configuration of the recording control device 1 according to the first embodiment.
In the first embodiment, the functions of the data acquisition unit 11, the data recording control unit 12, and the output control unit 13 are realized by the processing circuit 601. That is, the recording control device 1 includes a processing circuit 601 that controls the drive recorder 100 to record constant recording data or event recording data.
The processing circuit 601 may be dedicated hardware as shown in FIG. 6A, or may be a CPU (Central Processing Unit) 604 that executes a program stored in the memory 605 as shown in FIG. 6B.

When the processing circuit 601 is dedicated hardware, the processing circuit 601 may be, for example, a single circuit, a composite circuit, a programmed processor, a parallel programmed processor, an ASIC (Application Specific Integrated Circuit), or an FPGA (Field-Programmable). Gate Array) or a combination of these is applicable.

When the processing circuit 601 is the CPU 604, the functions of the data acquisition unit 11, the data recording control unit 12, and the output control unit 13 are realized by software, firmware, or a combination of software and firmware. The software or firmware is written as a program and stored in memory 605. The processing circuit 601 executes the functions of the data acquisition unit 11, the data recording control unit 12, and the output control unit 13 by reading and executing the program stored in the memory 605. That is, the recording control device 1 stores a program to be executed as a result of steps ST301 to ST305 in FIG. 3 and steps ST501 to ST507 in FIG. 5 when executed by the processing circuit 601. A memory 605 for the purpose is provided. Further, it can be said that the program stored in the memory 605 causes the computer to execute the procedure or method of the data acquisition unit 11, the data recording control unit 12, and the output control unit 13. Here, the memory 605 is, for example, a RAM, a ROM (Read Only Memory), a flash memory, an EPROM (Erasable Programmable Read Only Memory), an EEPROM (Electrically Erasable Projector), or an EPROM (Electrically Erasable Programle) A semiconductor memory, a magnetic disk, a flexible disk, an optical disk, a compact disk, a mini disk, a DVD (Digital Versaille Disc), or the like is applicable.

The functions of the data acquisition unit 11, the data recording control unit 12, and the output control unit 13 may be partially realized by dedicated hardware and partly realized by software or firmware. For example, for the data acquisition unit 11, the function is realized by the processing circuit 601 as dedicated hardware, and for the data recording control unit 12 and the output control unit 13, the processing circuit 601 reads the program stored in the memory 605. It is possible to realize the function by executing it.
Further, the recording control device 1 includes a device such as a camera 200, a microphone 300, a vehicle sensor 400, or an output device 500, and an input interface device 602 and an output interface device 603 for performing wired communication or wireless communication.

In the above-described first embodiment, in the recording control device 1, the recording area of the recording destination where the data recording control unit 12 records the vehicle status data is physically divided into the first recording physical area 211 and the second recording physical area 211. It is assumed that there are two recording areas of the recording physical area 221 of. However, this is just one example. The recording area of the recording destination where the data recording control unit 12 stores the vehicle status data may be three or more physically divided recording areas. In the recording control device 1, the recording area of the recording destination where the data recording control unit 12 records the vehicle status data may be a plurality of physically divided recording areas.
For example, it is assumed that the recording area has three recording areas, a first recording physical area 211, a second recording physical area 221 and a third recording physical area (not shown), and the data recording control unit 12 Can use the third physical recording area as a spare recording area.

As described above, the recording control device 1 according to the first embodiment includes a vehicle status data acquisition unit 111 that acquires vehicle status data related to the situation outside the vehicle, a vehicle data acquisition unit 112 that acquires vehicle data related to the vehicle, and a vehicle data acquisition unit 112. Based on the vehicle data acquired by the vehicle data acquisition unit 112, the vehicle status data acquired by the vehicle status data acquisition unit 111 is always recorded data or event recording recorded when an abnormality occurs in the vehicle. Based on the data judgment unit 121 that determines whether the data is data and the judgment result of whether the vehicle status data is constantly recorded data or event recording data determined by the data judgment unit 121, the vehicle status data is determined. Of the plurality of recording physical areas, the data recording control unit 12 for recording in the first recording physical area or the second recording physical area in which wear leveling is performed independently of the first recording physical area. It was configured to be prepared.
Therefore, the recording control device 1 can prevent the drive recorder 100 from falling into a situation where the event recording data is not recorded due to the end of the life of the memory in the recording area (first recording physical area 211). ..

More specifically, in the recording control device 1 according to the first embodiment, the data recording control unit 12 records the vehicle status data determined by the data determination unit 121 to be constant recording data in the first recording physical area 211. Then, the vehicle condition data determined by the data determination unit 121 to be the event recording data is recorded in the second recording physical area 221.
Therefore, the recording control device 1 can prevent the drive recorder 100 from falling into a situation where the event recording data is not recorded due to the end of the life of the memory in the recording area (first recording physical area 211). ..

Further, in the above-described configuration of the recording control device 1 in which the data recording control unit 12 constantly records the recorded data in the first recording physical area 211, the data recording control unit 12 determines the data in the first recording physical area 211. When the vehicle condition data determined to be constantly recorded data cannot be recorded by the unit 121, it is determined that the memory of the first recording physical area 211 has reached the end of its life, and the recording control device 1 determines that the data recording control unit 12 has reached the end of its life. Is configured to include an output control unit 13 that outputs exchange promotion information for prompting the exchange of the recording medium 2 when it is determined that the memory of the first recording physical area has reached the end of its life.
Therefore, the recording control device 1 can urge the user to replace the recording medium 2. Further, for the user, the operation of exchanging the recording medium while maintaining the state in which the event recording information can be recorded becomes possible, and the availability of the drive recorder 100 is improved.

Further, in the above-described configuration of the recording control device 1 in which the data recording control unit 12 constantly records the recorded data in the first recording physical area 211, the data recording control unit 12 determines the data in the first recording physical area 211. When the vehicle status data determined to be constantly recorded data cannot be recorded by the unit 121, it is determined that the memory of the first recording physical area 211 has reached the end of its life, and the recording destination of the vehicle status data is set to the first. It was configured to change from the recording physical area 211 of the above to the second recording physical area 221.
Therefore, the recording control device 1 can continue recording the constantly recorded data when the memory of the first recording physical area 211 reaches the end of its life, and can prevent the constantly recorded data from being lost.

Further, in the above-described configuration of the recording control device 1 in which the data recording control unit 12 records the constantly recorded data in the first recording physical area 211, the data recording control unit 12 has the data determination unit 121 constantly recording data. After changing the recording destination of the vehicle status data determined to be from the first recording physical area 211 to the second recording physical area 221, the vehicle status data acquired by the vehicle status data acquisition unit 111 is used as the vehicle status data. It was configured to reduce the resolution and record in the second recording physical area 221.
Therefore, the recording control device 1 can extend the life of the memory of the second recording physical area 221. As a result, the recording control device 1 can reduce the possibility of failing to record the vehicle condition data. In addition, the user will be able to exchange the recording medium 2 with sufficient time.

Further, in the recording control device 1 according to the first embodiment, the data recording control unit 12 determines that the data determination unit 121 is constantly recording data until the first recording physical area 211 becomes unable to record data. When the vehicle status data and the vehicle status data determined by the data determination unit 121 to be event recording data are recorded in the first recording physical area 211, and the data cannot be recorded in the first recording physical area 211. Is the recording destination of the vehicle status data determined by the data determination unit 121 to be constantly recorded data and the vehicle status data determined by the data determination unit 121 to be event recording data from the first recording physical area 211. It was configured to change to the second recording physical area 221.
Therefore, the recording control device 1 can prevent the drive recorder 100 from falling into a situation where the event recording data is not recorded due to the end of the life of the memory in the recording area (first recording physical area 211). ..

Further, the configuration of the recording control device 1 described above, in which the data recording control unit 12 records constant recording data and event recording data in the first recording physical area 211 until the first recording physical area 211 becomes unable to record data. In the data recording control unit 12, when the data recording becomes impossible in the first recording physical area 211, the data recording control unit 12 determines that the memory of the first recording physical area 211 has reached the end of its life, and the data recording control unit 12 is the first. When it is determined that the memory of the recording physical area 211 of No. 1 has reached the end of its life, the output control unit 13 for outputting the exchange promotion information for encouraging the exchange of the recording medium 2 is provided.
Therefore, the recording control device 1 can urge the user to replace the recording medium 2. Further, for the user, the operation of exchanging the recording medium while maintaining the state in which the event recording information can be recorded becomes possible, and the availability of the drive recorder 100 is improved.

Further, the configuration of the recording control device 1 described above, in which the data recording control unit 12 records constant recording data and event recording data in the first recording physical area 211 until the first recording physical area 211 becomes unable to record data. In the data recording control unit 12, the data recording control unit 12 sets the recording destination of the vehicle status data determined by the data determination unit 121 to be constantly recorded data and the vehicle status data determined by the data determination unit 121 to be event recording data. When changing to the recording physical area 221 of the above, the life reaching time when the second recording physical area reaches the life is predicted, and the output control unit 13 together with the exchange promotion information reaches the life predicted by the data recording control unit 12. It is configured to output the life end time information about the time.

Further, the configuration of the recording control device 1 described above, in which the data recording control unit 12 records constant recording data and event recording data in the first recording physical area 211 until the first recording physical area 211 becomes unable to record data. In the data recording control unit 12, the data recording control unit 12 first records the vehicle status data determined by the data determination unit 121 to be constantly recorded data and the vehicle status data determined by the data determination unit 121 to be event recording data. After changing from the recording physical area 211 of the above to the second recording physical area 221, the vehicle condition data acquired by the vehicle condition data acquisition unit 111 is transferred to the second recording physical area 221 by lowering the resolution of the vehicle condition data. Configured to record.
Therefore, the recording control device 1 can extend the life of the memory of the second recording physical area 221. As a result, the recording control device 1 can reduce the possibility of failing to record the vehicle condition data. In addition, the user will be able to exchange the recording medium 2 with sufficient time.

In this disclosure, it is possible to modify any component of the embodiment or omit any component of the embodiment.

The recording control device according to the present disclosure is configured so as not to fall into a situation where event recording data is not recorded due to the memory of the recording area reaching the end of its life, and thus can be applied to a drive recorder. ..

1 recording control device, 11 data acquisition unit, 111 vehicle status data acquisition unit, 112 vehicle data acquisition unit, 12 data recording control unit, 121 data judgment unit, 13 output control unit, 2 recording medium, 21 first recording medium, 211 1st recording physical area, 22 2nd recording medium, 221 2nd recording physical area, 100 drive recorder, 200 camera, 300 microphone, 400 vehicle sensor, 500 output device, 601 processing circuit, 602 input interface device, 603 output interface device, 604 CPU, 605 memory.

Claims

It is a recording control device for controlling the recording of data in a drive recorder.
The vehicle status data acquisition unit that acquires vehicle status data related to the situation outside the vehicle,
A vehicle data acquisition unit that acquires vehicle data related to the vehicle, and a vehicle data acquisition unit.
Based on the vehicle data acquired by the vehicle data acquisition unit, the vehicle status data acquired by the vehicle status data acquisition unit is constantly recorded data or is recorded when an abnormality occurs in the vehicle. The data judgment unit that judges whether it is event record data,
Based on the determination result of whether the vehicle status data is the constant recording data or the event recording data determined by the data determination unit, the vehicle status data is stored in the first of the plurality of recording physical areas. A recording control device including a data recording control unit for recording in a recording physical area or a second recording physical area where wear leveling is performed independently of the first recording physical area.
The data recording control unit records the vehicle condition data determined by the data determination unit to be the constant recording data in the first recording physical area, and determines that the data determination unit is the event recording data. The recording control device according to claim 1, wherein vehicle status data is recorded in the second recording physical area.
When the data recording control unit cannot record the vehicle status data determined by the data determination unit to be the constant recording data in the first recording physical area, the memory of the first recording physical area has reached the end of its life. Judging that it has reached
23. Recording control device.
When the data recording control unit cannot record the vehicle status data determined by the data determination unit to be the constant recording data in the first recording physical area, the memory of the first recording physical area has reached the end of its life. The recording control device according to claim 2, wherein the recording destination of the vehicle condition data is changed from the first recording physical area to the second recording physical area.
After the data recording control unit changes the recording destination of the vehicle status data determined by the data determination unit to be the constant recording data from the first recording physical area to the second recording physical area, the data recording control unit said. The recording control device according to claim 4, wherein the vehicle status data acquired by the vehicle status data acquisition unit is recorded in the second recording physical area by lowering the resolution of the vehicle status data.
Until the first recording physical area becomes unable to record data, the data recording control unit determines that the data determination unit is the constant recording data, and the data determination unit determines the event. Vehicle status data determined to be recorded data is recorded in the first recording physical area, and when data recording becomes impossible in the first recording physical area, the data determination unit uses the constant recording data. The recording destination of the vehicle status data determined to be present and the vehicle status data determined by the data determination unit to be the event recording data is changed from the first recording physical area to the second recording physical area. The recording control device according to claim 1, wherein the recording control device is characterized by the above.
When the data recording control unit cannot record data in the first recording physical area, the data recording control unit determines that the memory of the first recording physical area has reached the end of its life.
The sixth aspect of claim 6 is provided with an output control unit including an output control unit that outputs exchange promotion information for prompting the exchange of a recording medium when the data recording control unit determines that the memory of the first recording physical area has reached the end of its life. Recording control device.
The data recording control unit sets the recording destination of the vehicle status data determined by the data determination unit to be the constant recording data and the vehicle status data determined by the data determination unit to be the event recording data. When changing to the recording physical area of 2, predict the time when the second recording physical area will reach the end of its life, and
The recording control device according to claim 7, wherein the output control unit outputs the life arrival time information regarding the life arrival time predicted by the data recording control unit together with the exchange promotion information.
The data recording control unit sets the recording destination of the vehicle status data determined by the data determination unit to be the constant recording data and the vehicle status data determined by the data determination unit to be the event recording data. After changing from the recording physical area of 1 to the second recording physical area, the vehicle status data acquired by the vehicle status data acquisition unit is transferred to the second recording physical area by lowering the resolution of the vehicle status data. The recording control device according to claim 6, wherein the recording is performed.
A drive recorder provided with the recording control device according to any one of claims 1 to 9.
The recording control device according to any one of claims 1 to 9.
A drive recorder including the first recording physical area and a recording medium composed of a plurality of recording physical areas including the second recording physical area.
It is a recording control method for controlling the recording of data in a drive recorder.
The step in which the vehicle status data acquisition unit acquires vehicle status data related to the situation outside the vehicle,
A step in which the vehicle data acquisition unit acquires vehicle data related to the vehicle, and
Based on the vehicle data acquired by the vehicle data acquisition unit, the data determination unit determines whether the vehicle status data acquired by the vehicle status data acquisition unit is constantly recorded data or an abnormality occurs in the vehicle. The step to judge whether it is the event record data to be recorded at the time of
The data recording control unit records the vehicle status data in a plurality of recording physical areas based on the determination result of whether the vehicle status data is the constant recording data or the event recording data determined by the data determination unit. A recording control method including a step of recording in a first recording physical area or a second recording physical area in which wear leveling is performed independently of the first recording physical area.