WO2008044294A1

WO2008044294A1 - Information recording apparatus, information recording method, information recording program, and computer readable recording medium

Info

Publication number: WO2008044294A1
Application number: PCT/JP2006/320328
Authority: WO
Inventors: Hiroaki Shibasaki
Original assignee: Pioneer Corporation
Priority date: 2006-10-11
Filing date: 2006-10-11
Publication date: 2008-04-17
Also published as: JPWO2008044294A1; JP4914450B2

Abstract

An input unit (101) receives the input of an video data around a moving body, which is picked up by an imaging device mounted on the moving body. A duplicating unit (102) duplicates the video data input by the input unit (101). A detection unit (103) detects an abnormality associated with recording of the video data when the moving body exhibits a dangerous behavior. A recording unit (104) then records the video data duplicated by the duplicating unit (102) when the abnormality associated with recording of the video data is detected by the detection unit (103).

Description

Specification

Information recording apparatus, information recording method, information recording program, and computer-readable recording medium

Technical field

[0001] The present invention relates to an information recording apparatus for recording insurance information, an information recording method, an information recording program, and a computer-readable recording medium. However, the use of the present invention is not limited to the above-described information recording apparatus, information recording method, information recording program, and recording medium readable by a computer.

Background art

[0002] Conventionally, a drive recorder that records the surrounding situation of a running vehicle is known, similar to a flight recorder mounted on an airplane. Such a drive recorder has, for example, a front camera that captures the front of the vehicle, a rear camera that captures the rear, and a function of writing the front and rear images in a predetermined area of the image memory in synchronization with the reference signal. In addition, recording information obtained by adding vehicle position information and time information to image memory information is regularly recorded in the buffer memory.

[0003] When the impact detection sensor detects an impact of a predetermined value or more, the drive recorder stores recording information for a predetermined time from the detection time in the storage memory. In this way, when an incident such as a escaping incident is encountered, the recorded information stored in the storage memory can be checked to identify the escaping vehicle (see, for example, Patent Document 1 below).

[0004] Patent Document 1: Japanese Patent Application Laid-Open No. 2004-224105

Disclosure of the invention

Problems to be solved by the invention

[0005] However, in the above-described conventional technology, when recording information is stored in a digital manner, the storage memory is damaged due to a physical impact or the like, the relationship between data before and after is lost, or the data position is recorded. An example is the problem that it becomes difficult to restore recorded information if the part is damaged. In particular, the digital method compresses recorded information. One example is the problem that it is difficult to restore the recorded information when the compressed information is stored.

[0006] On the other hand, when recording information by analog method, it is not easy to copy data compared to digital method, so it takes time and effort to share data between parties and insurance companies and police authorities. Is given as an example. An example of the problem with analog recording information is that digital image processing cannot be used to sharpen images or make it easier to identify accidents.

Means for solving the problem

In order to solve the above-described problems and achieve the object, an information recording apparatus according to the invention of claim 1 is configured to input video data around the moving body imaged by an imaging apparatus mounted on the moving body. Input means for receiving; duplicating means for duplicating the video data input by the input means; and detecting means for detecting an abnormality associated with recording of the video data when the moving body exhibits dangerous behavior; And a recording means for recording the duplicate video data duplicated by the duplicating means when an abnormality relating to the recording of the video data is detected by the sensing means.

[0008] Also, the information recording method according to the invention of claim 9 includes an input step of receiving input of video data around the moving body imaged by an imaging device mounted on the moving body, and the input step described above. A duplication process for duplicating the input video data, a detection process for detecting an abnormality related to the recording of the video data when the moving body shows a dangerous behavior, and the video data by the detection process. A recording step of recording the duplicate video data duplicated in the duplication step when an abnormality relating to the recording is detected.

[0009] An information recording program according to claim 10 causes a computer to execute the information recording method according to claim 9.

[0010] Further, a computer-readable recording medium according to the invention of claim 11 records the information recording program according to claim 10.

Brief Description of Drawings

[0011] FIG. 1 is a diagram showing an example of a functional configuration of an information recording apparatus according to the present embodiment. FIG.

FIG. 2 is a flowchart showing the contents of processing of the information recording apparatus according to the present embodiment.

[FIG. 3] FIG. 3 is a block diagram showing an example of a hardware configuration of a drive recorder that is useful in this embodiment.

[FIG. 4] FIG. 4 is a block diagram showing an example of a functional configuration of a drive recorder according to the present embodiment.

[FIG. 5] FIG. 5 is a flowchart showing the contents of the processing of the drive recorder which is useful in this embodiment.

Explanation of symbols

[0012] 100 information recording apparatus

101 Input section

102 Duplicate

103 Detector

104 Recording section

BEST MODE FOR CARRYING OUT THE INVENTION

[0013] Exemplary embodiments of an information recording apparatus, an information recording method, an information recording program, and a computer-readable recording medium according to the present invention will be described below in detail with reference to the accompanying drawings.

[0014] (Embodiment)

(Functional configuration of information recording device)

With reference to FIG. 1, the functional configuration of the information recording apparatus that is useful in the present embodiment will be described. FIG. 1 is a block diagram showing an example of a functional configuration of an information recording apparatus according to the present embodiment.

In FIG. 1, an information recording apparatus 100 includes an input unit 101, a duplication unit 102, a detection unit 103, and a recording unit 104.

[0016] The input unit 101 accepts input of image data around a moving body imaged by an imaging device mounted on the moving body. Specifically, for example, the input unit 101 is connected to the imaging device. Accepts video data input in digital or analog format.

The duplicating unit 102 duplicates the video data input by the input unit 101. For example, the video data may be copied in another data format different from the data format of the input video data. Specifically, for example, the duplicating unit 102 duplicates the video data that has been overwritten among the video data input by the input unit 101 in another data format.

[0018] In addition, the duplicating unit 102 may add authentication information that enables the duplication video data to be authenticated with the video data that is the duplication source of the duplication video data. Specifically, for example, the authentication information is information for proving that the duplicated video data and the duplicated video data are the same video data.

In addition, the duplicating unit 102 may duplicate the video data in the digital format input by the input unit 101 in an analog format, for example. Further, the duplicating unit 102 may duplicate the video data in the analog format input by the input unit 101 in a digital format.

[0020] The detection unit 103 detects an abnormality related to recording of video data when the moving body exhibits dangerous behavior. Specifically, for example, an abnormality relating to recording is a recording medium that records video data when the moving body behaves dangerously, for recording video data on a predetermined recording medium or the predetermined recording medium. An abnormality in the recording device is detected. The abnormality of the recording medium or the recording device may be, for example, physical damage or a state in which video data cannot be recorded due to an electrical failure.

[0021] Specifically, for example, the detection unit 103 records video data in a digital format input by the input unit 101 when the moving body exhibits dangerous behavior. An abnormality in the recording medium may be detected. In addition, the digital recording medium may record digital video data copied by the copying unit 102, for example, when the moving body exhibits dangerous behavior.

The recording unit 104 records the duplicated video data duplicated by the duplicating unit 102 when the detection unit 103 detects an abnormality related to the recording of the video data. Specifically, for example, recording of duplicate video data is performed when, for example, an abnormality of a predetermined recording medium is detected. In this case, the duplicate video data may be recorded on another recording medium different from the predetermined recording medium.

[0023] Specifically, for example, when an abnormality is detected in the digital recording medium, the recording unit 104 uses the analog recording medium (not shown) to copy the analog duplicated video data copied by the copying unit 102. To record. For example, when an abnormality is detected in the digital recording medium, the recording unit 104 records the analog-format video data that is the copy source of the digital-format copy video data copied by the copy unit 102. It may be recorded on a medium.

[0024] Further, the recording unit 104 may overwritely record the duplicate video data when no abnormality relating to the recording of the video data is detected. Specifically, for example, the recording unit 104 may be configured to overwrite and record the duplicate video data duplicated by the duplication unit 102 and record the duplicate video data when an abnormality of a predetermined recording medium is detected.

[0025] (Contents of processing of information recording apparatus)

Next, the contents of the processing of the information recording apparatus 100 according to the present embodiment will be described with reference to FIG. FIG. 2 is a flowchart showing the contents of processing of the information recording apparatus according to the present embodiment. In the flowchart of FIG. 2, first, the input unit 101 determines whether or not the input unit 101 has received an input of video data around the moving body imaged by the imaging device mounted on the moving body (step S201).

[0026] In step S201, the video data input in step S201 is duplicated by duplicating unit 102 if the video data input is accepted after waiting (step S201: Yes). (Step S202). For example, the video data may be copied in another data format different from the data format of the input video data.

Next, the detection unit 103 detects an abnormality of a predetermined recording medium that records video data when the moving body exhibits dangerous behavior (step S203). An abnormality of a predetermined recording medium may be, for example, physical damage or a state in which video data cannot be recorded due to an electrical failure. An abnormality of the recording apparatus for recording data may be detected. [0028] When the recording unit 104 detects an abnormality of a predetermined recording medium in step S203, the duplicated video data copied in step S202 is recorded (step S204), Terminate the process.

[0029] It should be noted that if an abnormality of a predetermined recording medium is not detected in step S203, which is not described in the flowchart of FIG. 2, the duplication video data may be overwritten and recorded by the recording unit 104.

[0030] It should be noted that the information recording apparatus, information recording method, information recording program, and recording medium readable by the computer according to the present invention have the functions realized by the information recording apparatus 100 shown in FIG. However, the configuration is not limited to the information recording apparatus 100, and a plurality of apparatuses may be used as long as the functional unit shown in FIG. When connecting each functional unit as a different device, the connection between the devices may be established by performing communication by Bluetooth (registered trademark) or the like, regardless of wired or wireless.

[0031] As described above, according to the present embodiment, when input video data is duplicated in a format different from the input video data, and there is an abnormality in the recording medium for recording the video data In addition, duplicate video data can be recorded. Therefore, by combining the records in each data format, it is possible to enhance data integrity such as when equipment is damaged.

Specifically, for example, by recording video data in a digital format, data sharing by digital copy can be easily performed between the parties concerned and those other than the parties. Digital image processing can also make video data clearer and make it easier to identify accidents.

Furthermore, according to the present embodiment, even when there is an abnormality in a recording medium that records video data in digital format, it is possible to record duplicate video data in analog format on another recording medium. If the recording is in analog format, it is possible to reproduce the video in the fragments even if other recording media become fragments, and it is possible to reproduce the images continuously by connecting the fragments.

[0034] In this way, it is possible to optimize the preservation of video data by combining the merits of the digital method and the analog method. [0035] Further, since the authentication information can be given to the video data recorded in the digital format and the analog format, even if the video data in both formats is circulated, it is proved that the video data is the same. Unauthorized use can be prevented.

[0036] Also, if it is proved that both are the same, if the data of both can be partially acquired, the overlapped portion is eliminated and the video data can be restored by connecting them together. It is out.

Example

[0037] Examples of the present invention will be described below. In the present embodiment, an example in which the information recording apparatus of the present invention is implemented by a drive recorder mounted on a moving body such as a vehicle (including a four-wheeled vehicle and a two-wheeled vehicle) will be described.

[0038] (Drive recorder hardware configuration)

With reference to FIG. 3, the hardware configuration of the drive recorder that is useful in this embodiment will be described. FIG. 3 is a block diagram showing an example of the hardware configuration of the drive recorder that is useful in this embodiment.

In FIG. 3, a drive recorder 300 is mounted on a moving body such as a vehicle, and includes a CPU 301, a ROM 302, a RAM 303, a magnetic disk drive 304, a magnetic disk 305, an optical disk drive 306, and an optical disk. 307, voice IZF (interface) 308, speed 309, microphone 310, input device 311, video IZF312, display 313, communication I / F314, GPS unit 315, various sensors 316, And a camera 317. Each component 301 to 317 is connected by a bus 320.

First, the CPU 301 governs overall control of the drive recorder 300. The ROM 302 records various programs such as a boot program and an information recording program. The RAM 303 is used as a work area for the CPU 301.

[0041] Further, the information recording program switches over the recording destination of the running state of the vehicle, which is always overwritten and recorded when a trigger is detected by various sensors 316 described later. The running state of the vehicle may be, for example, a drive recorder image captured by a camera 317 described later, output values from various sensors 316, or the like.

[0042] Further, the recording destination of the driving state is, for example, for overwriting that always overwrites and records the driving state. It may have a recording area and a storage recording area for storing a running state when a trigger is detected, or may be configured to include a recording medium for overwriting recording and a recording medium for storage. Further, there may be a plurality of overwriting recording areas and overwriting recording media.

[0043] The trigger is, for example, an output of various sensors 316 that triggers storage of an image for a drive recorder imaged by the camera 317, and a threshold value determined by the CPU 301 from the various sensors 316. A configuration in which a trigger is detected when there is an output value that exceeds it may be used. This threshold value may be, for example, a value capable of determining a contact accident encounter or dangerous driving.

More specifically, for example, the trigger is detected when the output of the G sensor that detects an impact on the vehicle exceeds a threshold value determined by the CPU 301. The trigger information may be recorded together with the drive recorder image.

In addition, the information recording program copies and records a drive recorder image captured by a camera 317 described later in a format different from the format captured by the camera 317. The force information recording program, which will be described in detail with reference to FIG. 4, allows the drive recorder image captured in digital format by the camera 317 to be overwritten and recorded, and the drive recorder image is duplicated and recorded in analog format. It is good as well. In addition, the information recording program may overwrite and record the drive recorder image captured in the analog format, and may duplicate and record the image as a drive recorder image in the digital format.

[0046] Furthermore, the information recording program has a format different from the format stored in the storage recording area or recording medium when there is an abnormality in the recording area or recording medium for storing the drive recorder image. It is also possible to save the drive recorder image that has been overwritten.

[0047] Specifically, for example, when an information recording program causes an image for a drive recorder input in a digital format to be overwritten and copied in an analog format, the information recording program is overwritten and recorded in a digital format when a trigger is detected. Save the image for the drive recorder. During the storage of the drive recorder image, the storage area for recording and the recording If there is a problem with the medium, it is possible to stop and save the overwrite recording of the drive recorder image that was overwritten in analog format.

[0048] In addition, for example, when an image for a drive recorder input in an analog format is overwritten and copied in a digital format, the information recording program is overwritten and recorded in a digital format after copying when a trigger is detected. Save the drive recorder image. If there is an error in the storage area or recording medium while saving the drive recorder image, the drive recorder image overwrite recording that was recorded in analog format is stopped and saved. ,.

The magnetic disk drive 304 controls reading and writing of data with respect to the magnetic disk 305 according to the control of the CPU 301. The magnetic disk 305 records data written under the control of the magnetic disk drive 304. As the magnetic disk 305, for example, HD (node disk) or FD (flexible disk) can be used.

In addition, the optical disk drive 306 controls data reading / writing to the optical disk 307 in accordance with the control of the CPU 301. The optical disc 307 is a detachable recording medium from which data is read according to the control of the optical disc drive 306. The optical disk 307 can use a writable recording medium. Further, the removable recording medium may be a power MO of the optical disc 307, a memory card, or the like.

[0051] Examples of information recorded on the magnetic disk 305 and the optical disk 307 include audio and video inside and outside the vehicle obtained by a microphone 310 and a camera 317, which will be described later, and the current position of the vehicle detected by a GPS unit 315, which will be described later Information, output values from various sensors 316 described later, and the like. Further, the trigger information may be accumulated and stored based on the detected triggers of the outputs of the various sensors 316. This information is used as data for verification when a traffic accident occurs.

Also, the audio IZF 308 is connected to a speaker 309 for audio output and a microphone 310 for audio input. Audio is output from the speaker 309, and the audio received by the microphone 310 is AZD converted in the audio IZF 308. Note that the sound input from the microphone 310 can be recorded on the magnetic disk 305 or the optical disk 307 as sound data.

[0053] The input device 311 includes a plurality of keys for inputting characters, numerical values, various instructions, and the like. Remote control, keyboard, mouse, touch panel and so on.

Further, the video IZF 312 is connected to the display 313 and the camera 317. Specifically, the video iZF 312 includes, for example, a graphic controller that controls the entire display 313, a buffer memory such as VRAM (Video RAM) that temporarily records image information that can be displayed immediately, and a graphic controller. It is configured by a control IC that controls display of the display 313 based on the output image data.

The display 313 displays icons, cursors, menus, windows, or various data such as characters and images. As this display 313, for example, a CRT, a TFT liquid crystal display, a plasma display, or the like can be adopted.

[0056] The camera 317 captures an image inside or outside the vehicle. The image can be either a still image or a moving image.For example, the camera 317 captures the behavior of passengers inside the vehicle, and the captured image is output to a recording medium such as the magnetic disk 305 or the optical disk 307 via the image IZF312. To do. In addition, the camera 317 captures the situation outside the vehicle, and outputs the captured image to a recording medium such as the magnetic disk 305 or the optical disk 307 via the video IZF 312. The video output to the recording medium is overwritten and recorded as a drive recorder image.

In addition, the communication I / F 314 is connected to a network via radio and functions as an interface between the drive recorder 300 and the CPU 301. The communication I / F 314 is further connected to a communication network such as the Internet via radio and functions as an interface between the communication network and the CPU 301.

[0058] Further, the GPS unit 315 uses a received wave from a GPS satellite and output values from various sensors 316 (for example, an angular velocity sensor, an acceleration sensor, and a tire rotation number) to be described later, Information indicating the point is calculated. The information indicating the current location is information for specifying one point on the map information such as latitude-longitude and altitude.

[0059] The various sensors 316 are a vehicle speed sensor, an acceleration sensor, a G sensor, an angular velocity sensor, etc., and their output values are used to calculate the current location by the GPS unit 315 and to measure changes in speed and direction. It is done. Specifically, for example, the various sensors 316 output an odometer, a speed change amount, an azimuth change amount, and the like. Depending on this output value, sudden braking and sudden Dynamics such as dollars can be analyzed.

[0060] The various sensors 316 also include sensors that detect each operation of the vehicle by the driver. The detection of each operation of the vehicle may be configured to detect, for example, steering wheel operation, turn signal input, accelerator pedal depression, or brake pedal depression. In addition, the output value of each sensor 316 may be data recorded by the drive recorder function.

[0061] Further, in the various sensors 316, when the trigger for storing the drive recorder image is detected as described above, the drive recorder image is stored in the magnetic disk 305, the optical disk 307, or the like. It is good. The trigger is, for example, a trigger for storing an image for a drive recorder. The trigger may be configured to use an output of various sensors 316 that exceeds a predetermined threshold or an output that approximates a predetermined pattern.

[0062] Further, various sensors 316 detect abnormality of the storage area for storing the drive recorder image and the recording medium. Abnormality detection may be, for example, detecting when there is no response from the storage area or recording medium, normal storage operation is delayed, or damage has occurred.

Note that the information recording apparatus 100 shown in FIG. 1 includes the input unit 101, the duplicating unit 102, the detecting unit 103, and the recording unit including the ROM 302, RAM 303, and magnetic disk 305 in the drive recorder 300 shown in FIG. The CPU 301 executes a predetermined program using the program and data recorded on the optical disk 307 and the like, and realizes its function by controlling each part in the drive recorder 300.

That is, the drive recorder 300 according to the present embodiment executes the program recorded in the ROM 302 as a recording medium in the drive recorder 300, so that the functions provided in the information recording apparatus 100 shown in FIG. It can be executed according to the procedure shown in 2.

[0065] (Functional configuration of drive recorder 300)

Next, the functional configuration of the drive recorder 300 that is useful in the present embodiment will be described with reference to FIG. FIG. 4 is a block diagram showing an example of the functional configuration of the drive recorder that works on the present embodiment.

In FIG. 4, the drive recorder 300 includes an imaging unit 401, a data processing unit 402, and an overwriting unit. The recording digital memory 403, the trigger detection unit 404, the recording digital memory 405, the overwriting recording analog recording medium 406, and the abnormality detection unit 407 are also configured.

The imaging unit 401 realizes its function by, for example, the camera 317 shown in FIG. 3, and captures an image inside or outside the vehicle. The video imaged by the camera 317 is input to the data processing unit 402 as video data in a format such as a digital system, for example.

The data processing unit 402 realizes its function by, for example, the CPU 301 shown in FIG. 3, and executes various processes on the video data input from the imaging unit 401. Various processes add, for example, authentication information for proving that the video data input in digital format is the same video data as the original digital format video data when copied in analog format.

[0069] The authentication information attached may be embedded with various types of information using a technique such as a watermark. The various types of information may be, for example, character string information updated every predetermined time or every predetermined number of frames, information specifying a device, date / time (location) information, and the like. With these pieces of authentication information, video data recorded in an overwrite recording digital memory 403, a recording digital memory 405, and an overwrite recording analog recording medium 406, which will be described later, can be collated.

[0070] That is, even if digital format video data and analog format video data are distributed as drive recorder images, it can be easily proved that they are the same video, and unauthorized video data distribution and alteration Etc. can be prevented. In addition, if both video data can be partially acquired, overlapping parts can be connected based on the authentication information.

Then, the data processing unit 402 outputs the processed video data to the overwriting recording digital memory 403.

The overwrite recording digital memory 403 realizes its function by, for example, a recording medium such as the magnetic disk 305, the optical disk 307, and other buffer memory, and overwrites and records the video data input from the data processing unit 402. In the overwrite recording, for example, the overwrite recording is repeated by using video data for a predetermined time as a drive recorder image.

[0073] The drive recorder image recorded in the overwrite recording digital memory 403 is: Not shown! It is copied in analog format via a DZA (digital Z analog) converter and output to an analog recording medium 406 for overwriting recording. For example, the duplication may be performed by analogizing the authentication information added by the data processing unit 402 and duplicating it. In other words, the analog drive recorder image is duplicated as the same video data as the original digital drive recorder image.

In the description of FIG. 4, the force data processing unit 402 is configured to output the drive recorder image from the overwrite recording digital memory 403 to the overwrite recording analog recording medium 406 via the DZA conversion unit. It is also possible to perform conversion and duplicate the digital drive recorder image in analog form.

Specifically, for example, the data processing unit 402 adds authentication information to the digital format video data input from the imaging unit 401 and copies it in an analog format. Then, the data processing unit 402 outputs the copy source video data to the overwrite recording digital memory 403 as a drive recorder image, and outputs the copied video data to the overwrite recording analog recording medium 406. Also good.

[0076] The trigger detection unit 404 realizes its function by, for example, the various sensors 316 shown in Fig. 3, and detects a trigger when the drive recorder image is stored. For example, the trigger may be configured such that the output from the various sensors 316 is equal to or higher than a predetermined threshold or an output similar to a predetermined pattern.

[0077] Then, when the trigger is detected by the trigger detection unit 404, the drive recorder image for a predetermined time before and after the trigger detection time is used by using the drive recorder image overwritten and recorded in the overwrite recording digital memory 403. Is stored in the recording digital memory 405.

[0078] The recording digital memory 405 realizes its function by, for example, the magnetic disk 305, the optical disk 307, and other recording media shown in FIG. 3, and stores the drive recorder image that is output as the overwriting recording digital memory 403. To do. Specifically, for example, a drive recorder image stored as a configuration for storing a drive recorder image for a predetermined time before and after the time point when the trigger is detected by the trigger detection unit 404 is, for example, traffic It will be used as data for verification when an accident occurs. The analog recording medium 406 for overwrite recording realizes its function by, for example, a recording medium such as the magnetic disk 305, the optical disk 307, and other buffer memory shown in FIG. 3, and is output from the digital memory 403 for overwrite recording. Overwrite and record the drive recorder image in analog format. In other words, the drive recorder image is overwritten and recorded in analog format in the same manner as the drive recorder image overwritten in the overwrite recording digital memory 403.

In addition, the overwriting recording analog recording medium 406 stops overwriting when an abnormality in the recording digital memory 405 is detected by an abnormality detection unit 407 described later. In other words, when an abnormality occurs in the recording digital memory 405, the overwriting recording is stopped and the drive recorder image that has been overwritten until then is saved.

The abnormality detection unit 407 realizes its function by, for example, the various sensors 316 shown in FIG. 3, and detects an abnormality in the recording digital memory 405. The abnormality of the recording digital memory 405 is, for example, when there is no response from the recording digital memory 405, normal storage operation is delayed, or damage occurs. In addition, instead of detecting an abnormality in the recording digital memory 405, it may be configured to detect power off of other peripheral devices.

With such a configuration, even if the drive recorder image cannot be stored in the recording digital memory 405, the immediately preceding drive recorder image is stored in the overwriting recording analog recording medium 406. Become. In addition, even if the drive recorder image stored in the recording digital memory 405 is lost due to damage to the device or data, the analog drive recorder image will be stored, and the device and data will be lost. Records can be maintained even in the case of serious accidents such as damage. In addition, since authentication information is added, it is possible to prevent confusion even if both digital and analog data remain.

In the description of FIG. 4, instead of the digital format, the digital format video data captured by the imaging unit 401 is input to the data processing unit 402. May be input.

[0084] In that case, various processes in the data processing unit 402 are input in an analog format, for example. In order to prove that the copied video data is the same video data as the original analog video data when copied in digital format in a way that is difficult to synthesize and modify the video data Authentication information will be added.

Then, the data processing unit 402 outputs the processed video data to the overwrite recording analog recording medium 406 instead of the overwrite recording digital memory 403.

[0086] After that, the overwriting recording analog recording medium 406 overwrites and records the video data input from the data processing unit 402, and the recorded image for the drive recorder has an A ZD (analog Z digital) conversion unit (not shown). And is output to the digital memory 403 for overwriting recording. In the duplication, for example, the authentication information attached by the data processing unit 402 may be digitalized and duplicated.

Here, the configuration is such that the drive recorder image is output from the overwriting recording analog recording medium 406 to the overwriting recording digital memory 403 via the AZD conversion unit. However, the data processing unit 402 performs AZD conversion. Also, copy analog drive recorder images in digital format.

Specifically, for example, the data processing unit 402 adds authentication information to the video data in the analog format input from the imaging unit 401 and copies it in a digital format. Then, the data processing unit 402 outputs the copy source video data as the drive recorder image to the analog recording medium 406 for overwriting recording, and outputs the copied video data to the overwriting recording digital memory 403. Good.

[0089] As shown in Fig. 4, if the drive recorder images are overwritten and recorded and stored in digital and analog formats, the advantages of both digital and analog formats can be utilized. Thus, the drive recorder image can be reliably maintained.

Note that by using different recording media for the overwrite recording digital memory 403, the recording digital memory 405, and the overwrite recording analog recording medium 406, the drive recorder image can be complemented reliably. .

[0091] The advantage of the digital format is that, for example, data replication is easier than with the analog format, so the parties and the insurance company, police authorities, etc. can share the drive recorder image, or the drive recorder image can be processed. To make it easier to identify accidents. The

[0092] In addition, the advantage of the analog format is that it is configured to record on magnetic tape, etc., so it is more robust than the digital format, and even if the tape is damaged, the drive recorder in the damaged fragment Images can be replayed, and fragments can be stitched together to reproduce drive recorder images more reliably.

[0093] In FIG. 4, the overwrite recording digital memory 403, the recording digital memory 405, and the overwriting recording analog recording medium 406 are described as separate configurations, but each function is realized by an integrated recording medium. It is good to do. Specifically, for example, each area may be divided by one recording medium such as a magnetic recording medium!

[0094] Even in this case, when playing back after an accident, it is possible to play back digitally recorded data in normal times. When the medium is damaged, it can be played back by joining pieces of analog-format recorded parts. You can take advantage of the format and analog format.

[0095] (Processing content of drive recorder 300)

Here, the contents of the processing of the drive recorder 300, which is useful in the present embodiment, will be described with reference to FIG. FIG. 5 is a flowchart showing the contents of the processing of the drive recorder that is useful in this embodiment. In the flowchart of FIG. 5, first, it is determined by the various sensors 316 whether or not the vehicle has started to travel (step S501). Judgment regarding traveling may be, for example, detecting the start or movement of the engine of the vehicle based on the output values of the various sensors 316.

[0096] In step S501, when the vehicle is started after waiting to start running (step S501: Yes), a drive recorder image is acquired by the camera 317 (step S502). In the flowchart of FIG. 5, the drive recorder image acquired from the camera 317 is in a digital format.

Next, the CPU 301 adds a watermark (digital watermark) to the drive recorder image acquired in step S502 (step S503). The watermark is, for example, authentication information for proving that copying in analog format is the same video data as the original digital format video data.

[0098] Recording media such as magnetic disk 305, optical disk 307, and other buffer memories Thus, the drive recorder image with the watermark attached in step S503 is overwritten and recorded (step S504). In the description of FIG. 5, in step S503 and step S504, the force to be overwritten after the watermark is added to the drive recorder image acquired in step S502, is acquired in step S502. Overwrite and record the image for the drive recorder and add a watermark to the power.

Next, the CPU 301 copies the drive recorder image overwritten in step S504 in an analog format (step S505), and overwrite-records it on the overwrite recording analog recording medium (step S506). The analog recording medium for overwrite recording is, for example, a recording medium such as a magnetic disk 305, an optical disk 307, or another buffer memory, and may be the analog recording medium 406 for overwrite recording shown in FIG.

[0100] Then, it is determined by various sensors 316 whether or not a trigger is detected (step S).

507). For example, the trigger may be detected when the output from the various sensors 316 exceeds the threshold value determined by the CPU 301. This threshold value may be a value that can be used to determine, for example, the occurrence of a contact accident or dangerous driving.

[0101] If a trigger is detected in step S507 (step S507: Yes), the drive recorder image overwritten in step S504 is saved (step S507).

508). For example, the drive recorder image may be stored in the recording digital memory 405 shown in FIG. 4, or the drive recorder image for a predetermined time before and after the trigger is detected may be stored.

[0102] Then, it is determined by the various sensors 316 whether or not the force that has detected the breakage of the device is detected (step S509).

[0103] If a trigger is not detected in step S507 (step S507: No), the process proceeds to step S509, and it is determined whether or not the force detected that the device is broken by various sensors 316 (step S509). .

[0104] If damage to the device is detected in step S509 (step S509: Yes), the overwriting recording in the analog format in step S506 is stopped (step S510). Terminate the process. For example, the overwriting recording is stopped by overwriting the overwriting recording analog recording medium 406 shown in FIG. Until then, it will be overwritten and saved.

[0105] In addition, in step S509, when damage to the device is not detected (step S509: No), it is determined by the various sensors 316 whether or not the vehicle has been driven (step S511).

[0106] In step S511, if the vehicle finishes running (step S511: Yes), the series of processing ends, and if the vehicle does not finish running (step S511: No), step Return to S502 and repeat the process.

[0107] As described above, according to the present embodiment, the drive recorder image is overwritten and recorded by the digital method and the analog method, and the digital method is used in the event of an accident. In addition, if the device is damaged, it is possible to reliably preserve the drive recorder image by stopping and saving the analog overwriting.

[0108] Furthermore, since the drive recorder image is saved in the digital format when a normal trigger is detected, and in the analog mode in the event of a serious accident that damages the device, a general-purpose digital format drive recorder image is acquired. On the other hand, even if it becomes difficult to acquire digital drive recorder images, it is possible to acquire drive recorder images in analog format. In other words, even if it is difficult to reproduce the digital drive recorder image, it is possible to comprehend the accident situation accurately by using the analog drive recorder image to complement the image.

[0109] Further, since authentication information such as a watermark can be added to the digital drive recorder image and the analog drive recorder image, both can be proved to be the same video. Even if the image for a drive recorder is acquired, it is possible to make an accurate judgment at the time of an accident without being confused and to prevent inappropriate tampering. In addition, by connecting the two images based on the authentication information, an accurate drive recorder image can be reproduced.

[0110] The information recording method described in the present embodiment is such that a program prepared in advance is executed on a computer such as a personal computer or a workstation. It can be realized more. This program is recorded on a computer-readable recording medium such as a hard disk, a flexible disk, a CD-ROM, an MO, and a DVD, and is executed by reading the recording medium force by the computer. The program may be a transmission medium that can be distributed through a network such as the Internet.

Claims

The scope of the claims

[1] An input means for receiving input of video data around the moving body imaged by an imaging device mounted on the moving body;

Duplicating means for duplicating the video data input by the input means; detecting means for detecting an abnormality related to recording of the video data when the moving body exhibits dangerous behavior;

A recording unit for recording the duplicate video data duplicated by the duplication unit when an abnormality relating to the recording of the video data is detected by the detection unit;

An information recording apparatus comprising:

[2] The copying means includes

2. The information recording apparatus according to claim 1, wherein the video data input by the input unit is duplicated in a data format different from the data format of the video data.

[3] The recording means includes:

2. The information recording apparatus according to claim 1, wherein when the abnormality related to the recording of the video data is not detected, the duplicate video data is overwritten and recorded.

[4] The recording means includes:

The information recording apparatus according to claim 1, wherein when an abnormality relating to recording of the video data is detected, the duplicate video data is recorded on another recording medium different from the predetermined recording medium.

[5] The duplicating means includes

Of the video data input by the input means, the video data that has been overwritten is copied in the other data format,

The recording means includes

2. The information recording apparatus according to claim 1, wherein the duplicate video data duplicated by the duplication unit is overwritten and recorded when the abnormality of the predetermined recording medium is detected. .

[6] The duplicating means includes: 2. The information recording apparatus according to claim 1, wherein authentication information that enables authentication with the video data that is a copy source of the duplicate video data is added to the duplicate video data.

[7] The input means includes

The imaging device force accepts the input of the video data in digital format, the duplicating means,

The video data in digital format input by the input means is copied in analog format,

The detection means includes

When the moving body exhibits a dangerous behavior, it detects an abnormality in a digital recording medium that records the digital data of the digital format input by the input unit, and the recording unit includes:

2. The information recording according to claim 1, wherein, when an abnormality of the digital recording medium is detected, the duplicate video data in the analog format duplicated by the duplicating means is recorded on the analog recording medium. apparatus.

[8] The input means includes

Accepting the input of the video data in analog form from the imaging device, the duplicating means,

The analog video data input by the input means is copied in digital format,

The detection means includes

When the moving body shows a dangerous behavior, it detects an abnormality in a digital recording medium that records the duplicated video data in the digital format duplicated by the duplicating means, and the recording means includes:

When an abnormality is detected in the digital recording medium, the video data in the analog format that is the copy source of the duplicate video data in the digital format copied by the copying unit is recorded on the analog recording medium. The information recording apparatus according to claim 1, wherein:

[9] An input step for receiving input of video data around the moving body imaged by an imaging device mounted on the moving body;

A duplication step of duplicating the video data input by the input step, and a detection step of detecting an abnormality related to the recording of the video data when the moving body exhibits a dangerous behavior;

A recording step of recording the duplicate video data duplicated by the duplication step when an abnormality relating to the recording of the video data is detected by the detection step;

An information recording method comprising:

[10] An information recording program causing a computer to execute the information recording method according to claim 9.

[11] A computer-readable recording medium on which the information recording program according to claim 10 is recorded.