JP6605950B2 - Information recording apparatus, information recording method, information recording program, and recording medium - Google Patents

Description

  The present application belongs to the technical field of an information recording apparatus, an information recording method, an information recording program, and a recording medium. More specifically, it belongs to the technical field of an information recording apparatus and information recording method for recording image information and the like, a program for the information recording apparatus, and a recording medium on which the program is recorded.

  In recent years, for example, a so-called drive recorder is mounted on a vehicle for the purpose of security in the vehicle. As a prior art document disclosing the prior art regarding such a drive recorder, for example, the following Patent Document 1 can be cited. In the technology described in Patent Document 1, in the drive recorder, for example, after an ACC (Accessory) switch is turned off due to a stop of a vehicle in which the drive recorder is mounted, for example, power supply to the drive recorder itself is performed. A delay circuit that stops after being delayed (continued) by using a battery or the like is provided. According to this configuration, even when the vehicle is stopped, for example, information necessary for the next start-up of the drive recorder can be recorded on a temporary recording medium such as a RAM (Random Access Memory), and further, the recording can be performed. It is also possible to record (transfer) recorded information or the like on a non-volatile recording medium.

JP 2007-141214 A (for example, paragraphs [0073] and [0074] of the specification)

  However, even with the technique described in Patent Document 1, it is necessary to newly record another information while the power supply is delayed after the ACC switch is turned off. In such a case, there is a problem in that there is a possibility that the other information is not recorded / saved because there is not enough time to delay, or a part of the information is recorded / saved but the rest cannot be recorded / saved until the end. is there.

  In addition, as a countermeasure against the fact that the information to be recorded is not recorded, it may be possible to set the delay time uniformly long as much as necessary, but in this case, even when the other information does not need to be recorded, it is long every time. It is necessary to provide a delay time. In this case, there is a problem in that battery power is unnecessarily consumed.

  Therefore, the present application has been made in view of the above-described problems, and an example of the problem is an information recording apparatus capable of reliably recording necessary recording information while suppressing unnecessary power consumption and An information recording method, a program for the information recording apparatus, and a recording medium on which the program is recorded are provided.

  In order to solve the above problem, the invention according to claim 1 is characterized in that acquisition means for acquiring at least one of image information and sound information as recording information, detection means for detecting applied acceleration, When the acceleration is equal to or higher than a preset threshold, the recording control means for starting recording of the recording information to the recording means, and the power supply is stopped when a preset standby time elapses after the external power supply is stopped. And stop control means for extending the waiting time when the acceleration equal to or greater than the threshold is detected within the waiting time.

  In order to solve the above problems, the invention according to claim 8 is an acquisition step of acquiring at least one of image information and sound information as recording information, a detection step of detecting applied acceleration, When the acceleration is equal to or higher than a preset threshold, the recording control process for starting recording of the recording information to the recording means, and the power supply is stopped when the preset standby time elapses after the external power supply is stopped And a stop control step of extending the waiting time when the acceleration equal to or greater than the threshold is detected within the waiting time.

  In order to solve the above-mentioned problems, the invention described in claim 9 provides a computer connected to the recording means described in any one of claims 1 to 7 according to claim 1. It functions as the information recording device described in any one of the items.

  In order to solve the above-mentioned problem, an information recording program according to claim 9 is recorded so as to be readable by the computer according to claim 9.

1 is a block diagram showing a schematic configuration of an information recording apparatus according to an embodiment. It is a block diagram which shows the schematic structure of the drive recorder which concerns on an Example. It is a flowchart which shows the recording process which concerns on an Example. It is a figure which illustrates concretely the preservation | save time etc. which concern on an Example, (a) is a figure which shows a 1st example, (b) is a figure which shows a 2nd example.

  Next, the form for implementing this application is demonstrated using FIG. FIG. 1 is a block diagram illustrating a schematic configuration of the information recording apparatus according to the embodiment.

  As shown in FIG. 1, the information recording apparatus S according to the embodiment includes an acquisition unit 1, a detection unit 2, a recording control unit 3 connected to the recording unit R, and a stop control unit 4. Has been.

  In this configuration, the acquisition unit 1 acquires at least one of image information and sound information as recording information.

  On the other hand, the detection means 2 detects the applied acceleration.

  Thereby, the recording control means 3 starts recording the recording information on the recording means R when the applied acceleration is equal to or greater than a preset threshold value.

  The stop control means 4 stops the power supply when the preset standby time has elapsed after the external power supply is stopped, and when the acceleration equal to or greater than the threshold is detected within the standby time, Extend.

  As described above, according to the operation of the information recording apparatus S according to the embodiment, when at least one of image information and sound information is acquired as recording information and the applied acceleration is equal to or higher than a predetermined threshold value, Recording of recording information to the recording means R is started. On the other hand, after the external power supply is stopped, the power supply is stopped when a predetermined standby time has elapsed. And when the acceleration beyond a threshold value is detected within waiting time, the said waiting time is extended. Therefore, when acceleration greater than the predetermined threshold is detected during the standby time after stopping power supply from the outside, the standby time is extended and the power supply to the recording control means 3 is continued. When acceleration exceeding a predetermined threshold is detected by deceleration or the like, it is possible to reliably record recording information that will be required later. In addition, since the standby time is extended when an acceleration equal to or greater than the threshold is detected within the standby time, it is possible to suppress the occurrence of unnecessary power consumption by extending the standby time until it is unnecessary.

  Next, specific examples corresponding to the above-described embodiment will be described with reference to FIGS. In addition, the Example demonstrated below is an Example at the time of applying this application with respect to the drive recorder which makes an imaging range the front etc. of a vehicle etc., for example.

  FIG. 2 is a block diagram showing a schematic configuration of the drive recorder according to the embodiment, FIG. 3 is a flowchart showing recording processing according to the embodiment, and FIG. 4 is a diagram illustrating storage time and the like according to the embodiment. It is. At this time, in FIG. 2, the same member numbers as those of the constituent members in the information recording apparatus S are used for the constituent members of the examples corresponding to the constituent members in the information recording apparatus S according to the embodiment shown in FIG. ing.

  The drive recorder according to the embodiment is mounted on, for example, a vehicle, and the front of the drive recorder is an imaging range. As shown in FIG. 2, the drive recorder DR according to the embodiment includes a power receiving unit 11 connected to an external power source EB such as a vehicle battery, the drive recorder DR itself, and a battery main body and its control unit. A battery unit B, an operation unit 10 including operation buttons, a camera unit 1 including a CCD (Charge-Coupled Device) or a CMOS (Complementary Metal Oxide Semiconductor) sensor, and a biaxial or triaxial acceleration sensor, for example. Shock detection unit 2 composed of, etc., state management unit 3 composed of CPU, RAM, ROM (Read Only Memory), etc., power management unit 12, volatile unit RA composed of RAM, etc., SSD (Solid State Drive) or HDD And a recording part R including a non-volatile part RO composed of (Hard Disc Drive). At this time, as an example of the external power source EB, an external power source EB (in other words, a battery of the vehicle itself) connected to the power receiving unit 11 via, for example, a so-called cigar socket of a vehicle on which the drive recorder DR is mounted can be cited. It is done. The camera unit 1 corresponds to an example of the acquisition unit 1 according to the embodiment, the impact detection unit 2 corresponds to an example of the detection unit 2 according to the embodiment, and the recording unit R corresponds to the recording unit R according to the embodiment. It corresponds to an example. Further, the state management unit 3 corresponds to an example of the recording control unit 3 and the stop control unit 4 according to the embodiment, the battery unit B corresponds to an example of “battery unit” according to the present application, and the power management unit 12. Corresponds to an example of the “remaining power amount detecting means” according to the present application. Further, in FIG. 2, in the drive recorder DR, constituent members corresponding to an example of the information recording device S according to the embodiment are indicated by broken lines.

  In this configuration, when the power receiving unit 11 can receive power from the external power source EB, the power receiving unit 11 receives the power under the control of the state management unit 3, and the camera unit 1, the impact detection unit 2, and the like. Necessary power is distributed / supplied to each component of the drive recorder DR. In addition, when the power receiving unit 11 cannot receive power from the external power supply EB due to, for example, the physical connection with the external power supply EB being cut off, the power cut-off signal indicating that fact And output to the state management unit 3. Here, the case where the physical connection with the external power source EB is cut off means that, for example, the insertion part to the cigar socket is caused by an impact caused by sudden acceleration or sudden deceleration of the vehicle. It can be considered that it falls off or the insertion portion is artificially extracted.

  On the other hand, under the control of the state management unit 3, the camera unit 1 captures, for example, the front of the vehicle on which the drive recorder DR is mounted, and outputs image information corresponding to the imaging result to the volatile unit RA of the recording unit R. This is continued after the start of power supply via the power receiving unit 11. Then, the state management unit 3 performs temporary recording and holding of the image information in the volatile unit RA, for example, for 12 seconds from the recording timing, and thereafter, every time image information is newly recorded, the old image is recorded. The recording unit R is controlled so that erasure from the volatile unit RA is repeated in order from the information. By the control of the state management unit 3 described above, the image information for the latest 12 seconds, for example, is temporarily recorded while being constantly updated in the volatile unit RA.

  Next, the state management unit 3 is normally supplied with power necessary for its operation from the external power source EB via the power reception unit 11. On the other hand, when the state management unit 3 receives the power cutoff signal from the power reception unit 11, the state management unit 3 controls the battery unit B to start supplying power to the power reception unit 11. Thereby, the power receiving unit 11 distributes / supplies the power supplied from the battery unit B to each of the above-described components until a preset standby time elapses. At this time, the power management unit 12 monitors the remaining power amount in the battery unit B, sequentially generates a remaining amount signal indicating the remaining power amount, and outputs the remaining amount signal to the state management unit 3.

  The standby time set in advance here is information necessary for the next start-up of the drive recorder DR when the power cut-off signal indicates that power from the external power supply EB cannot be received. , The time for recording in the non-volatile part RO of the recording part R. Specifically, the waiting time is set to 1 second, for example. The “information required at the next start-up” includes, for example, setting information as the drive recorder DR at a timing when power supply from the external power supply EB is stopped, position information indicating a position at the timing, or A part of image information (for example, image information for one screen) recorded in the volatile unit RA at the timing is included. In the following description, the information necessary for the next activation is simply referred to as “next activation information”. Then, the state management unit 3 controls the recording unit R, the camera unit 1 and the like so that the next activation information is recorded in the non-volatile unit RO within the standby time.

  On the other hand, when it is detected that the acceleration of a preset magnitude and direction is applied to the drive recorder DR (in other words, a vehicle equipped with the drive recorder DR), the impact detection unit 2 indicates that fact. A detection signal is generated and output to the state management unit 3. This detection signal is a signal that means that the acceleration of the predetermined magnitude and direction is applied due to an impact caused by, for example, sudden acceleration or sudden deceleration of the vehicle.

  When the detection signal is output from the impact detection unit 2 within the standby time, the state management unit 3 extends the standby time so that power is distributed / supplied from the battery unit B. 11 and the power management unit 12 are controlled. As a result, the power management unit 12 controls the battery unit B so as to distribute and supply power until a later-described storage time (for example, 20 seconds) obtained by extending the standby time.

  Then, the state management unit 3 immediately after the timing when the detection signal is output and the image information temporarily recorded in the volatile unit RA at the storage time corresponding to the timing when the detection signal is output. For example, image information for 8 seconds is recorded in the non-volatile part RO of the recording part R. At this time, for example, 12 seconds of image information temporarily recorded in the volatile unit RA at the timing when the detection signal is output is transferred from the volatile unit RA to the non-volatile unit RO. For example, image information for 8 seconds is recorded directly from the camera unit 1 into the non-volatile unit RO. At this time, at the timing when the detection signal is output, image information for, for example, 12 seconds immediately before is temporarily recorded in the volatile unit RA, and as a result, before and after the timing, For example, image information for a total of 20 seconds corresponding to the storage time is recorded in the nonvolatile portion RO. In addition, the state management unit 3 is a non-volatile unit corresponding to the storage time of the storage time itself and image information before and after the timing at which the detection signal is output based on the remaining amount signal from the power management unit 12. The recording time to the RO is controlled.

  After that, when the storage time elapses, the state management unit 3 stops the distribution / supply of power from the battery unit B and turns off the power of the drive recorder DR as a whole.

  Next, a recording process of the image information in the non-volatile part RO in the drive recorder DR according to the embodiment (hereinafter simply referred to as “recording process according to the embodiment”) will be specifically described with reference to FIGS. 3 and 4. explain. Note that the recording process according to the embodiment is mainly executed mainly by the state management unit 3.

  The recording process according to the embodiment starts from the timing when the ACC switch of the vehicle in which the drive recorder DR is mounted is turned on when power is supplied from the external power source EB via the power receiving unit 11. Is done. Then, during the operation as the drive recorder DR (step S1), the state management unit 3 monitors whether or not the power from the external power source EB can no longer be received depending on the presence or absence of the power cut-off signal ( Step S2). When the power supply from the external power source EB is continued in the monitoring in step S2 (step S2: NO), the state management unit 3 returns to step S1 and continues the normal operation as the drive recorder DR.

  On the other hand, when the power cut-off signal is detected during the monitoring in step S2 (step S2: YES), the state management unit 3 switches to power supply from the battery unit B and waits for power off as the drive recorder DR ( In step S3), the next activation information within the waiting time is recorded in the nonvolatile portion RO (step S4).

  Next, the state management unit 3 determines whether or not the detection signal is output from the impact detection unit 2, in other words, the disappearance of the power supply from the external power source EB monitored in step S2 causes the vehicle to accelerate rapidly. It is determined whether or not it is due to a sudden deceleration or the like (step S5). When the detection signal is not output in the determination in step S5 (step S5: NO), it is assumed that the loss of power supply from the external power source EB is, for example, artificial, and the state management unit 3 will be described later. The process proceeds to step S9. On the other hand, when the detection signal is output in the determination in step S5 (step S5: YES), the state management unit 3 extends the standby time so that the storage time is secured (step S6). The state management unit 3 is a non-volatile unit for the image information recorded in the volatile unit RA and the image information from the camera unit 1 (in other words, the image information for the storage time including the timing at which the detection signal is output). Recording on the RO is started (step S7), and after the necessary amount of recording is completed, the recording is terminated (step S8). At this time, based on the remaining amount signal from the power management unit 12, the state management unit 3 records the image information before the detection signal is output (that is, the transfer time from the volatile unit RA), and The recording time from the camera unit 1 of the image information after the timing is adjusted.

  Here, the adjustment of each recording time will be specifically described with reference to FIG. In FIG. 4, the remaining power amount of the battery unit B is “remaining amount”, the recording time of the image information before the timing at which the detection signal is output is “before detection”, and the recording of the image information after that timing. Each time is expressed as “after detection”.

  As illustrated in FIG. 4A, the holding time is controlled so as to change based on the remaining power amount of the battery unit B. More specifically, the holding time is controlled to be shorter as the remaining power amount of the battery unit B is smaller. For example, when the remaining power amount of the battery unit B is close to 100%, the holding time is set to 20 seconds as described above. In this case, the ratio of the recording time of the image information before the timing at which the detection signal is output and the recording time of the image information after the timing within the storage time is approximately 3: 2 (specifically, 12 seconds: 8 seconds). In addition, when the fraction below a decimal point arises in each recording time based on the said ratio, each recording time is set by rounding off, for example. Further, when the remaining power amount of the battery unit B at the timing when the detection signal is output is small, and thus the storage time must be shortened, the ratio of the recording times is set to approach 1: 1, for example. The As illustrated in FIG. 4B, when a so-called margin as a storage time is added for 2 seconds, each recording time is also set longer by about 1 second. As described above, the reason why the recording time of the image information before the timing at which the detection signal is output is set longer than the recording time of the image information after the timing is because of a subsequent cause such as sudden acceleration or sudden deceleration. This is because, in surveys and the like, it is important to record the behavior of the vehicle up to sudden acceleration or sudden deceleration, such as the traveling direction of the vehicle immediately before sudden acceleration or sudden deceleration. The relationship between the recording time of the image information before the timing at which the detection signal is output and the recording time of the image information after the timing can be arbitrarily set, and indicates each set recording time. The information is preferably recorded in, for example, the non-volatile portion RO in the form of a table shown in FIG. Further, according to the subsequent use of the image information recorded in the non-volatile portion RO, the recording time of the image information after the timing at which the detection signal is output is set to zero, and the recording time of the image information before the timing is set to zero. You may comprise so that it may set longer.

  When the necessary amount of image information has been recorded in the nonvolatile portion RO by the processing up to step S8 (see step S8), the state management unit 3 next determines whether the standby time has elapsed (step S9). When the standby time has not elapsed in the determination in step S9 (step S9: NO), the state management unit 3 returns to step S3 and repeats the series of processes described above. On the other hand, when the image information is recorded in the non-volatile portion RO, the standby time has elapsed (step S9: YES), so the state management unit 3 turns off the power as the drive recorder DR ( Step S10), the recording process according to the embodiment is terminated.

  As described above, according to the recording process according to the embodiment, when an acceleration greater than or equal to the predetermined value is detected within the standby time, the standby time is extended and the power supply from the battery unit B is continued. Therefore, for example, when acceleration greater than a predetermined value is detected due to rapid acceleration, rapid deceleration, or the like, image information that will be required later can be recorded reliably. Further, since the standby time is extended when an acceleration equal to or greater than the predetermined value is detected within the standby time, it is possible to suppress the occurrence of unnecessary power consumption by extending the standby time until it is unnecessary.

  Furthermore, since the recording of the image information is continued until the end of the extended standby time (in other words, the end of the storage time), the image information corresponding to the desired recording time can be recorded.

  Furthermore, since the power from the battery unit B is supplied until the end of the standby time after the power supply from the external power source EB is stopped, the next start-up information and the image information can be reliably recorded until the end of the standby time. Can do.

  Further, since the time corresponding to the extension of the standby time is controlled based on the remaining amount of the battery part B, necessary information can be reliably recorded according to the remaining amount of the battery part B. Further, at this time, as the remaining amount of the battery unit B is smaller, the time corresponding to the extension is controlled to be shorter (see FIG. 4), so that necessary information is recorded more reliably according to the remaining amount of the battery unit B. be able to.

  Furthermore, since the recording time of the image information before the timing at which the detection signal is output is set longer than the recording time of the image information after the timing within the storage time, an acceleration equal to or higher than a predetermined value is detected. It is possible to more reliably record image information that will be required later in connection with the above.

  Further, since the image information is recorded in the non-volatile portion RO, it is possible to reliably record the image information after the acceleration of a predetermined value or more is applied.

  In the above-described embodiment, the next activation information and image information are recorded in the non-volatile unit RO. However, in addition to this, audio information (sound information) in the same time zone as the image information, and the impact Information indicating a specific value or direction of the acceleration detected by the detection unit 2 may be recorded together.

  Further, in the above-described embodiment, the impact detection unit 2 is mounted with the drive recorder DR (in other words, the drive recorder DR) due to the impact caused by sudden acceleration or sudden deceleration of the vehicle. When it is applied to a vehicle, a detection signal indicating that is generated. However, the impact detection unit 2 is not limited to the rapid acceleration and rapid deceleration described above, and generates a detection signal indicating that when an acceleration having a preset magnitude and direction is applied. If you can.

  Furthermore, in the above-described embodiment, both the recording process during the standby time and the recording process during the storage time obtained by extending the standby time are performed by supplying power from the battery unit B. In addition to this, the recording during the standby time is performed. The process may be performed by a delay circuit related to power-off of the drive recorder DR, and only the recording process during the storage time may be performed by supplying power from the battery unit B.

  Furthermore, when the power of the drive recorder DR itself is turned off during recording of image information from the camera unit 1 to the nonvolatile unit RO, the state management unit 3 requests the camera unit 1 to interrupt the recording. It is preferable to transmit a signal to that effect.

  Also, a program corresponding to the flowchart shown in FIG. 3 is recorded on a recording medium such as an optical disk or a hard disk, or obtained via a network such as the Internet, and read out to a general-purpose microcomputer or the like. By executing this, it is possible to cause the microcomputer or the like to function as the state management unit 3 according to the embodiment.

1 Acquisition means (camera part)
2 Detection means (impact detector)
3. Recording control means (status management unit)
4 Stop control means R Recording means (recording section)
S Information recording device B Battery part RA Volatile part RO Non-volatile part DR Drive recorder EB External power supply

Claims (10)

Acquisition means for acquiring at least one of image information and sound information as recording information;
Detection means for detecting applied acceleration;
A recording control unit that starts recording the recording information on the recording unit when the acceleration is equal to or greater than a preset threshold;
Stop control means for stopping the power supply when a preset standby time elapses after the external power supply is stopped, and extending the standby time when the acceleration equal to or greater than the threshold is detected within the standby time; ,
An information recording apparatus comprising: The information recording apparatus according to claim 1,
The information recording apparatus characterized in that the stop control means controls the recording control means so as to continue recording the recording information in the recording means until the end of the extended waiting time. In the information recording device according to claim 1 or 2,
Battery means for supplying power to the recording control means;
After the external power supply is stopped, the stop control means controls the battery means so as to supply power from the battery means to the recording control means until the end of the standby time. Information recording device. The information recording apparatus according to claim 3,
Further comprising a remaining power amount detecting means for detecting a remaining power amount of the battery means;
The information recording apparatus according to claim 1, wherein the stop control unit controls a time corresponding to an extension of the standby time based on the detected remaining power amount. The information recording apparatus according to claim 4,
The information recording apparatus according to claim 1, wherein the stop control unit controls the time corresponding to the extension to be shorter as the detected remaining power amount is smaller. In the information recording device according to any one of claims 1 to 5,
The recording control means sets the recording time of the recording information before detection of the acceleration equal to or greater than the threshold based on the extended waiting time from the recording time of the recording information after detection of the acceleration equal to or greater than the threshold. An information recording apparatus characterized in that the recording information is recorded in the recording means with a longer length. In the information recording device according to any one of claims 1 to 6,
The information recording apparatus, wherein the recording means is nonvolatile. An information recording method executed by an information recording apparatus,
An acquisition step of acquiring at least one of image information and sound information as recording information;
A detection step of detecting applied acceleration;
A recording control step of starting recording of the recording information on a recording means when the acceleration is equal to or greater than a preset threshold;
A stop control step of stopping power supply when a preset standby time elapses after external power supply is stopped, and extending the standby time when the acceleration equal to or greater than the threshold is detected within the standby time; ,
An information recording method comprising:   A computer connected to the recording means according to any one of claims 1 to 7 is caused to function as the information recording device according to any one of claims 1 to 7. Information recording program.   10. A recording medium in which the information recording program according to claim 9 is recorded so as to be readable by the computer according to claim 9.

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