JPWO2008041339A1 - Server apparatus, information recording method, information recording program, and computer-readable recording medium - Google Patents

Abstract

In the information recording apparatus (100) for overwriting and recording video information related to peripheral video of the mobile body that is continuously transmitted from a plurality of mobile bodies, the receiving unit (101) is a communication unit including identification information for identifying the mobile body. Receive communication information about the request from the mobile. The authentication unit (102) authenticates the mobile object using the identification information in the received communication information. A transmission part (103) transmits the communication permission information which permits communication with respect to the authenticated mobile body. In addition, as a result of the transmission of the communication permission information, the receiving unit (101) receives travel state information including behavior information relating to the behavior of the moving body and video information relating to the surrounding video transmitted from the moving body. Then, the determination unit (104) refers to the received behavior information to determine whether or not the behavior of the moving object is dangerous, and the storage unit (105) determines that the behavior of the moving object is dangerous. If it is determined, the video information that has been overwritten is saved.

Description

  The present invention relates to an information recording apparatus for recording 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 computer-readable recording medium.

  2. Description of the Related Art Conventionally, a drive recorder that records the surrounding situation of a running vehicle is known in the same manner as a flight recorder mounted on an airplane. Such a drive recorder is mounted on a vehicle and has a front camera for photographing the front of the vehicle, a rear camera for photographing 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. The recording information obtained by adding the vehicle position information and the time information to the image memory information is constantly recorded in the buffer memory.

  And if a drive recorder detects the impact more than predetermined value with an impact detection sensor, it will preserve | save in the storage memory the recording information between predetermined time from a detection time. As described above, when an incident such as a escaping incident is encountered, the recorded vehicle stored in the storage memory can be confirmed to identify the escaping vehicle (for example, see Patent Document 1 below).

JP 2004-224105 A

  However, in the above-described prior art, there is a problem that the storage memory provided for each drive recorder becomes insufficient in capacity when an impact exceeding a predetermined value is detected many times. On the other hand, when almost no impact exceeding a predetermined value is detected, the capacity of the storage memory provided for each drive recorder is hardly used, and the problem that the hardware resources cannot be effectively used is an example.

  In addition, since the storage memory is mounted on the vehicle, it is necessary to use a special specification to prevent vibration during driving and to maintain robustness when detecting impacts, and users are forced to increase costs. The problem is given as an example.

  In order to solve the above-described problems and achieve the object, the information recording apparatus according to the first aspect of the present invention overwrites and records video information relating to peripheral video of the mobile body that is continuously transmitted from a plurality of mobile bodies. In the recording apparatus, using communication information receiving means for receiving communication information relating to a communication request including identification information for identifying the mobile body from the mobile body, and using the identification information in the communication information received by the communication information receiving means. Authentication means for authenticating the mobile body, transmission means for transmitting communication permission information for permitting communication to the mobile body authenticated by the authentication means, and communication permission information transmitted by the transmission means. As a result, traveling that receives traveling state information including behavior information relating to the behavior of the moving body and video information relating to surrounding images transmitted from the moving body. A state information receiving unit, a determination unit that determines whether or not the behavior of the mobile body is dangerous with reference to the behavior information received by the traveling state information reception unit, and the mobile unit by the determination unit Storage means for storing the video information that has been overwritten when it is determined that the behavior is dangerous.

  According to a tenth aspect of the present invention, there is provided an information recording method for overwriting and recording video information relating to a peripheral image of a moving body continuously transmitted from a plurality of moving bodies. A communication information receiving step for receiving communication information related to a communication request including information from the mobile body, and an authentication step for authenticating the mobile body using the identification information in the communication information received by the communication information receiving step; A transmission step of transmitting communication permission information for permitting communication to the mobile body authenticated by the authentication step, and a result of transmission of the communication permission information by the transmission step, as a result of transmission from the mobile body. A driving state information receiving step for receiving driving state information including behavior information relating to the behavior of the moving body and video information relating to surrounding images; With reference to the behavior information received by the receiving step, a determination step for determining whether or not the behavior of the moving body is dangerous, and the determination step determines that the behavior of the moving body is dangerous. A storage step of storing the video information that has been overwritten.

  According to an eleventh aspect of the present invention, an information recording program causes a computer to execute the information recording method according to the tenth aspect.

  According to a twelfth aspect of the present invention, a computer-readable recording medium records the information recording program according to the eleventh aspect.

FIG. 1 is a block diagram showing an example of a functional configuration of the information recording apparatus according to the present embodiment. FIG. 2 is a flowchart showing the contents of processing of the information recording apparatus according to the present embodiment. FIG. 3 is an explanatory diagram showing an overview of the drive recorder system according to the present embodiment. FIG. 4 is a block diagram illustrating an example of the hardware configuration of the server according to the present embodiment. FIG. 5 is a block diagram illustrating an example of a hardware configuration of the in-vehicle terminal according to the present embodiment. FIG. 6 is a flowchart illustrating the processing contents of the server according to the present embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 Information recording device 101 Receiving part 102 Authentication part 103 Transmission part 104 Determination part 105 Storage part 106 Setting part

  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 are explained in detail below with reference to the accompanying drawings.

(Embodiment)
(Functional configuration of information recording device)
The functional configuration of the information recording apparatus according to this embodiment will be described with reference to FIG. FIG. 1 is a block diagram showing an example of a functional configuration of the information recording apparatus according to the present embodiment.

  In FIG. 1, an information recording apparatus 100 that overwrites and records video information related to peripheral video of a mobile body that is continuously transmitted from the mobile body includes a reception unit 101, an authentication unit 102, a transmission unit 103, and a determination unit 104. , A storage unit 105 and a setting unit 106.

  The receiving unit 101 receives communication information related to a communication request including identification information for identifying the mobile body from the mobile body. The identification information may be, for example, an ID (IDentifier) number assigned to the mobile object. Further, the communication information may be information relating to the end of communication instead of a communication request, for example.

  In addition, as a result of transmission of communication permission information by the transmission unit 103 described later, the reception unit 101 receives traveling state information including behavior information regarding the behavior of the moving body and video information regarding surrounding video transmitted from the moving body. It is good.

  The authentication unit 102 authenticates the mobile object using the identification information in the communication information received by the reception unit 101. The mobile object may be authenticated, for example, by using the identification information transmitted from the mobile object to authenticate whether or not the mobile object that has transmitted the communication information is a pre-registered mobile object.

  The transmission unit 103 transmits communication permission information for permitting communication to the mobile body authenticated by the authentication unit 102.

  The determination unit 104 refers to the behavior information received by the reception unit 101 and determines whether the behavior of the moving object is dangerous. The behavior information is information including a detection value of a sensor that detects the behavior of the moving object, for example.

  Specifically, for example, the determination unit 104 compares the detected value of the sensor in the behavior information received by the receiving unit 101 with a threshold value indicating the dangerous behavior of the moving object, thereby determining the behavior of the moving object. It may be determined whether or not is dangerous.

  The storage unit 105 overwrites and records the video information regarding the peripheral video received by the reception unit 101 in the overwrite recording area. The entire running state information including the behavior information related to the behavior of the moving object and the video information related to the surrounding video may be overwritten and recorded.

  In addition, when the determination unit 104 determines that the behavior of the moving object is dangerous, the storage unit 105 stores the video information that has been overwritten. Specifically, for example, the storage unit 105 may store the video information and the identification information of the moving body that is the transmission source of the video information in association with each other. Further, the storage unit 105 may store the behavior information and the video information in association with each other when it is determined that the behavior of the moving object is dangerous.

  In addition, when the determination unit 104 determines that the behavior of the moving object is dangerous, the storage unit 105 stores the video information overwritten in the overwrite recording area for the recording area set by the setting unit 106 described later. It is good also as saving to a preservation | save area | region.

  Further, when the communication of the video information transmitted from the mobile body is interrupted, the storage unit 105 stores the video information overwritten in the overwrite recording area for the recording area set by the setting unit 106 to be described later. It may be stored. Thereby, it is possible to store video information when communication is broken due to an accident and communication is interrupted without sending behavior information at that time. Further, when it can be determined that communication is simply interrupted due to communication circumstances, such as when communication is restored within a predetermined time, the video information stored in the storage area may be deleted and overwriting recording of the video information may be resumed. .

  Further, the storage unit 105 may archive the video information stored in the storage area when the reception unit 101 receives communication information regarding the end of communication.

  The setting unit 106 sets a recording area including an overwrite recording area to be overwritten and a storage area to be saved for video information transmitted from the mobile body authenticated by the authentication unit 102.

(Contents of information recording device processing)
Next, the processing contents 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 receiving unit 101 determines whether a communication request has been received (step S201).

  In step S201, after waiting for a communication request to be received (step S201: Yes), the authentication unit 102 uses the identification information included in the communication request received in step S201 to Authentication is performed (step S202).

  Next, the setting unit 106 sets a recording area including an overwrite recording area to be overwritten and a storage area to be saved for the video information transmitted from the mobile body authenticated in step S202 (step S203).

  Subsequently, the transmission unit 103 transmits communication permission information for permitting communication to the mobile body authenticated in step S202 (step S204). In the flowchart of FIG. 2, in step S203 and step S204, the communication permission information is transmitted after the recording area is set. However, the order is not limited. Specifically, for example, the recording area may be set after transmitting the communication permission information.

  Next, as a result of the transmission of the communication permission information in step S204 by the transmission unit 103, the driving state information including behavior information relating to the behavior of the moving body and video information relating to the surrounding video transmitted from the moving body is received (step S205). ).

  And the determination part 104 determines the behavior of a moving body based on the driving | running | working state information received in step S205 (step S206). For example, the behavior of the moving object is determined by comparing the detected value of the sensor in the behavior information received in step S205 with a threshold value indicating the dangerous behavior of the moving object. It may be determined whether or not there is.

  Next, when the storage unit 105 determines that the behavior of the moving object is dangerous in step S206, the video information overwritten in the overwrite recording area is stored in the storage area for the recording area set in step S203. Save (step S207).

  Then, the receiving unit 101 determines whether or not the end of communication has been received. If received (step S208: Yes), the video information stored in the storage area is archived (step S209), and a series of processes is performed. Exit.

  If the end of communication is not accepted in step S208 (step S208: No), the process returns to step S205 and the process is repeated.

  Although not described in the flowchart of FIG. 2, instead of determining the behavior of the moving body in step S206, when communication of video information transmitted from the moving body is interrupted, it is overwritten in the overwrite recording area. The video information may be stored in a storage area. With such a configuration, even when an abnormality other than dangerous behavior occurs in the moving body, video information can be appropriately stored.

  Furthermore, if communication is restored within a specified time after communication is interrupted, or behavior information at the time when communication is interrupted after communication is recovered, it is determined that there is no dangerous moving body behavior from the behavior information. When it can be determined that the communication is simply interrupted due to communication circumstances, the video information stored in the storage area may be deleted and overwriting recording of the video information may be resumed. By adopting such a configuration, overwriting recording can be continued if there is no abnormality in the moving body just by passing through a location where communication is difficult.

  Further, when communication is restored, the video information and behavior information during communication interruption may be requested and acquired, and the behavior information may be determined to store necessary video information.

  Also, when communication is restored, first request and obtain behavior information while communication is interrupted, and if it is determined that the behavior of the moving body is dangerous by judging the behavior information, before and after The video information may be requested, acquired, and stored.

  As described above, according to the present embodiment, the driving state information is received from the moving body by communication to determine the behavior, and the video information around the moving body is stored when the behavior of the moving body is dangerous. be able to. Therefore, appropriate video information can be stored without depending on the specifications and conditions of the memory mounted on the mobile body.

  In addition, according to the present embodiment, a recording area is set for a mobile body that has requested communication among a plurality of mobile bodies, video information is overwritten and stored, and the recording area is recorded upon completion of communication. The configuration is canceled. Therefore, video information of a plurality of moving bodies can be managed in a unified manner, and a recording area can be shared with a plurality of moving bodies, so that the recording area can be effectively used.

  Examples of the present invention will be described below. In this embodiment, for example, a server that receives video information and a G value output from a G sensor that detects an impact from a vehicle-mounted terminal mounted on a moving body such as a vehicle (including a four-wheeled vehicle and a two-wheeled vehicle) An example when the information recording apparatus of the invention is implemented will be described.

(Overview of drive recorder system)
The outline of the drive recorder system according to the present embodiment will be described with reference to FIG. FIG. 3 is an explanatory diagram showing an overview of the drive recorder system according to the present embodiment.

  In FIG. 3, the drive recorder system 300 includes a server 301 and in-vehicle terminals 302 (302a, 302b, 302c) mounted on a plurality of vehicles.

  The server 301 has a drive recorder function based on video information and G values transmitted from the in-vehicle terminals 302 (302a, 302b, 302c). Specifically, for example, the server 301 records video information in the storage areas 310 (310a, 310b, 310c) set in the recording medium for each in-vehicle terminal 302 (302a, 302b, 302c).

  Although details will be described with reference to FIG. 6, the server 301 receives a communication request including a transmission permission request and vehicle identification information from the in-vehicle terminal 302 (302a, 302b, 302c), and uses the received vehicle identification information. Then, it is authenticated whether or not the vehicle on which the in-vehicle terminal 302 (302a, 302b, 302c) that transmitted the communication request is a registered vehicle registered in advance.

  Next, when the vehicle equipped with the in-vehicle terminal 302 (302a, 302b, 302c) that has transmitted the communication request is authenticated, the server 301 sends a communication permission notification for permitting communication to the in-vehicle terminal 302 (302a, 302b, 302c). ). Subsequently, the server 301 sets a storage area 310 (310a, 310b, 310c) for recording video information and G values transmitted from a vehicle on which the in-vehicle terminal 302 (302a, 302b, 302c) is mounted.

  The capacity of the storage area 310 (310a, 310b, 310c) may be a predetermined capacity, for example, or based on the past storage amount history in the in-vehicle terminals 302 (302a, 302b, 302c) mounted on the respective vehicles. It may be set.

  The accumulation area 310 (310a, 310b, 310c) may be composed of, for example, an overwrite recording area for overwriting and a storage area when a trigger is detected. More specifically, for example, in the setting of the storage area 310 (310a, 310b, 310c), when a communication request is received from the in-vehicle terminal 302a, the vehicle in which the in-vehicle terminal 302a is mounted is authenticated and a communication permission notification is transmitted. In addition to transmitting to the terminal 302a, the storage area 310a is set.

  The setting of the storage area 310 (310a, 310b, 310c) may be changed according to the stored capacity, for example. Specifically, for example, the setting of the accumulation area 310 (310a, 310b, 310c) may be configured such that once the predetermined rate P is accumulated, the allocation is changed until the accumulated amount is reduced to the predetermined rate Q. More specifically, for example, the setting of the storage area 310 (310a, 310b, 310c) is performed when the capacity of 100 MB (megabytes) is initially allocated with P being 80% and Q being 50%. When the storage capacity reaches 80 MB, the capacity of the storage area 310 (310a, 310b, 310c) may be increased to 160 MB so that 80 MB becomes 50%.

  In addition, the storage area 310 (310a, 310b, 310c), for example, is recorded sequentially from a vacant area of the recording medium instead of being set for each vehicle, and the recorded position and the vehicle are managed. Alternatively, the vehicle identification information may be added to the video information and recorded.

  Then, the server 301 overwrites and records the video information transmitted from each in-vehicle terminal 302 (302a, 302b, 302c) in the storage area 310 (310a, 310b, 310c), and also each in-vehicle terminal 302 (302a, 302b). , 302c) is constantly monitored.

  The G value monitor detects, for example, when the received G value is greater than or equal to a specified value or when transmission is interrupted as a trigger, and for a predetermined time before and after the trigger is detected (transmission is interrupted). To save the information. In this way, by monitoring the G value, it is possible to save video information when the vehicle receives a G value greater than a specified value or encounters an accident in which transmission is interrupted.

  Here, after transmission is interrupted, when it is determined that a communication error has occurred after a predetermined time, the stored video information may be deleted and overwrite recording may be continued. In other words, if the cause of the transmission interruption is not an accident but a passage through a difficult communication point, the video information need not be stored.

  Further, when the server 301 detects a trigger, the server 301 may transmit a trigger detection notification to the in-vehicle terminal 302 (302a, 302b, 302c) to prompt a check as to whether or not there has been a contact due to an accident or the like. For example, the detection notification may be collectively performed after a transmission end notification described later, or by determining the possibility of contact based on the size of the G value and the image, and determining whether to transmit immediately. Also good. Also, the stored video information may be transmitted to the in-vehicle terminal 302 (302a, 302b, 302c) together with the detection notification.

  Thus, by performing detection notification, the vehicle user can accurately recognize accidents and dangerous driving, and can safely drive. Further, video information that is not an accident may be deleted as unnecessary information.

  Then, the server 301 receives a communication end notification including the transmission end notification and the vehicle identification information from the in-vehicle terminal 302 (302a, 302b, 302c), and transmits the communication end notification using the received vehicle identification information. It is authenticated whether or not the vehicle on which the in-vehicle terminal 302 (302a, 302b, 302c) is a registered vehicle. When authenticated, an authentication notification or the like may be returned to the in-vehicle terminal 302 (302a, 302b, 302c).

  When the vehicle equipped with the in-vehicle terminal 302 (302a, 302b, 302c) that transmitted the communication end notification is authenticated, the server 301 stores the stored video information in the archive. The archive is, for example, a place where video information saved in the past is stored, and may be on the hard disk of the server 301 or a recording medium such as an optical disk. In addition, the archive may be divided into discs or areas for each vehicle or user, or sequentially recorded from the vacant area of the archive to manage the recorded position and the vehicle, or video information It is good also as adding and recording vehicle identification information.

  After storing the video information in the archive, the server 301 deletes the video information stored on the hard disk and stores the storage area 310 (310a, 310b, 310c) set in the in-vehicle terminal 302 (302a, 302b, 302c). Is released. The released storage area 310 (310a, 310b, 310c) is assigned to the in-vehicle terminal 302 (302a, 302b, 302c) that next requested the communication.

  With such a configuration, video information of a plurality of vehicles can be centrally managed and a plurality of vehicles can share the storage area 310 (310a, 310b, 310c). It leads to use.

  Note that the video information stored in the archive may be deleted after a predetermined storage period has elapsed or after the accident verification or insurance process is completed.

  The in-vehicle terminals 302 (302a, 302b, 302c) transmit a communication request including a transmission permission request and vehicle identification information of the own vehicle to the server 301 when the engine of each vehicle is activated. The transmission of the communication request may be, for example, detecting the release of the parking brake or detecting the start of traveling based on the traveling speed instead of detecting the start of the engine.

  As a result of transmitting the communication request to the server 301 as a result of transmitting the communication request to the server 301, the in-vehicle terminal 302 (302 a, 302 b, 302 c) activates the camera and continues to capture images in a predetermined direction. In addition, the in-vehicle terminal 302 (302a, 302b, 302c) continues to acquire the G value by the G sensor in accordance with the imaging of the video in the predetermined direction, and continues to acquire the current time and position information of the current time.

  The in-vehicle terminal 302 (302a, 302b, 302c) transmits the video information, G value, vehicle identification information, position information, time information, and the like to the server 301 in real time by always-on wireless communication.

  Further, the in-vehicle terminal 302 (302a, 302b, 302c) may be configured to include a buffer memory in order to cover a communication time lag. Specifically, for example, when the server 301 detects a communication error during reception of video information, the buffer memory is used when a retransmission request is made to the in-vehicle terminal 302 (302a, 302b, 302c). The video information that matches the retransmission request may be retransmitted from the video information recorded in the buffer memory of the in-vehicle terminal 302 (302a, 302b, 302c) that has accepted the request. In this case, the capacity of the buffer memory is a capacity capable of recording video information for the time required for detecting a communication error and transmitting a retransmission request by the server 301 and for retransmission by the in-vehicle terminal 302 (302a, 302b, 302c).

  In FIG. 3, the constant communication has been described. However, the above-described buffer memory may be used to perform intermittent communication. Specifically, for example, intermittent communication may be recorded in a buffer memory such as video information and G values for a predetermined time and transmitted to the server 301 collectively.

  The in-vehicle terminal 302 (302a, 302b, 302c) transmits a communication end notification including a transmission end notification and vehicle identification information to the server 301 when the vehicle engine is stopped. The transmission end notification may be transmitted, for example, by detecting that the parking brake is applied during parking or detecting the end of traveling based on the traveling speed instead of detecting the stop of the engine.

  When a communication request and a communication end notification are transmitted by detecting a parking brake, a traveling speed, and the like, the in-vehicle terminal 302 (302a, 302b, 302c) transmits a communication request and a communication each time the vehicle temporarily stops and resumes traveling. An end notification will be sent.

  Further, when transmitting a communication request and a communication end notification by detecting the start and stop of the engine, the in-vehicle terminal 302 (302a, 302b, 302c) is a video if the engine is starting even when parked. Information and the like are transmitted to the server 301.

  Furthermore, in addition to starting and stopping the engine, a parking brake, a traveling speed, and the like may be detected, and transmission pause / resumption notification such as video information may be transmitted to the server 301. In this case, when receiving the transmission suspension, the server 301 suspends the overwrite recording while holding the storage area 310 (310a, 310b, 310c) assigned to the in-vehicle terminal 302 (302a, 302b, 302c). Also good. And it is good also as not making it the trigger which preserve | saves video information that communication has been interrupted until a restart notification is received.

(Hardware configuration of server 301)
Here, the hardware configuration of the server 301 according to the present embodiment will be described with reference to FIG. FIG. 4 is a block diagram illustrating an example of the hardware configuration of the server according to the present embodiment.

  4, the server 301 includes a CPU 401, a ROM 402, a RAM 403, a magnetic disk drive 404, a magnetic disk 405, an optical disk drive 406, an optical disk 407, an audio I / F (interface) 408, and a speaker 409. , An input device 411, a video I / F 412, a display 413, and a communication I / F 414. Each component 401 to 414 is connected by a bus 420.

  First, the CPU 401 governs overall control of the server 301. The ROM 402 stores various programs such as a boot program, an authentication program, and an information recording program. The RAM 403 is used as a work area for the CPU 401.

  The authentication program causes a vehicle equipped with the in-vehicle terminal 302 to be authenticated. Specifically, for example, the authentication is performed by authenticating whether the vehicle identification information transmitted from the in-vehicle terminal 302 is a registered vehicle registered in advance.

  When the trigger is detected by the G value transmitted from the in-vehicle terminal 302, the information recording program switches the recording destination of the video information of the vehicle that has always been overwritten. The recording destination of the video information may have, for example, an overwrite recording area for always overwriting and a storage recording area for storing the video information when a trigger is detected, or a recording medium for overwriting recording And a storage medium for storage. The overwrite recording area and the storage recording area may be set for each authenticated in-vehicle terminal 302.

  The trigger is, for example, an output of a sensor that triggers storage of an image for a drive recorder imaged by a camera in the in-vehicle terminal 302, and the output value transmitted from the in-vehicle terminal 302 is determined by the CPU 401. The configuration may be such that a trigger is detected when the output value exceeds the threshold value. This threshold value may be a value that can determine, for example, the occurrence of a contact accident 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 on which the in-vehicle terminal 302 is mounted exceeds a threshold value determined by the CPU 401. Also, trigger information may be recorded together with the drive recorder image.

  Moreover, a trigger is good also as a trigger, for example, when communication with the vehicle-mounted terminal 302 stops. In other words, the information recording program can store the video information when an accident where transmission is interrupted is encountered. In addition, after transmission is interrupted, when it is determined that a communication error has occurred after a predetermined time, the stored video information may be deleted to continue overwriting.

  The magnetic disk drive 404 controls the reading / writing of the data with respect to the magnetic disk 405 according to control of CPU401. The magnetic disk 405 records data written under the control of the magnetic disk drive 404. As the magnetic disk 405, for example, an HD (hard disk) or an FD (flexible disk) can be used.

  The optical disc drive 406 controls reading / writing of data with respect to the optical disc 407 according to the control of the CPU 401. The optical disc 407 is a detachable recording medium from which data is read according to the control of the optical disc drive 406. As the optical disc 407, a writable recording medium can be used. In addition to the optical disk 407, the removable recording medium may be an MO, a memory card, or the like.

  As an example of information recorded on the magnetic disk 405 and the optical disk 407, information on a registered vehicle registered in advance can be cited. The server 301 authenticates the vehicle on which the in-vehicle terminal 302 is mounted based on the information regarding the registered vehicle.

  The audio I / F 408 is connected to a speaker 409 for audio output, and audio is output from the speaker 409.

  Examples of the input device 411 include a remote controller including a plurality of keys for inputting characters, numerical values, various instructions, a keyboard, a mouse, a touch panel, and the like.

  The video I / F 412 is connected to the display 413. Specifically, the video I / F 412 includes, for example, a graphic controller that controls the entire display 413, a buffer memory such as a VRAM (Video RAM) that temporarily records image information that can be displayed immediately, and a graphic controller. Based on the output image data, the display 413 is configured by a control IC that controls display.

  The display 413 displays icons, cursors, menus, windows, or various data such as characters and images. As the display 413, for example, a CRT, a TFT liquid crystal display, a plasma display, or the like can be adopted.

  Further, the communication I / F 414 is connected to a network via wireless and functions as an interface between the server 301 and the CPU 401. The communication I / F 414 is further connected to a communication network such as the Internet via wireless, and also functions as an interface between the communication network and the CPU 401.

  Note that the reception unit 101, the authentication unit 102, the transmission unit 103, the determination unit 104, the storage unit 105, and the setting unit 106 included in the information recording apparatus 100 illustrated in FIG. 1 are the ROM 402, the RAM 403, The CPU 401 executes a predetermined program using programs and data recorded on the magnetic disk 405, the optical disk 407, etc., and controls each part in the server 301 to realize the function.

  That is, the server 301 according to the present embodiment executes the program recorded in the ROM 402 as a recording medium in the server 301, so that the functions provided in the information recording apparatus 100 shown in FIG. Can be done with.

(Hardware configuration of in-vehicle terminal 302)
Next, the hardware configuration of the in-vehicle terminal 302 according to the present embodiment will be described with reference to FIG. FIG. 5 is a block diagram illustrating an example of a hardware configuration of the in-vehicle terminal according to the present embodiment.

  In FIG. 5, an in-vehicle terminal 302 is mounted on a moving body such as a vehicle, and includes a CPU 501, ROM 502, RAM 503, magnetic disk drive 504, magnetic disk 505, optical disk drive 506, optical disk 507, and audio. I / F (interface) 508, speaker 509, microphone 510, input device 511, video I / F 512, display 513, communication I / F 514, GPS unit 515, various sensors 516, and camera 517 And. In addition, the components 501 to 517 are connected by a bus 520, respectively.

  First, the CPU 501 governs overall control of the in-vehicle terminal 302. The ROM 502 records various programs such as a boot program. The RAM 503 is used as a work area for the CPU 501.

  The magnetic disk drive 504 controls the reading / writing of the data with respect to the magnetic disk 505 according to control of CPU501. The magnetic disk 505 records data written under the control of the magnetic disk drive 504. As the magnetic disk 505, for example, an HD (hard disk) or an FD (flexible disk) can be used.

  The optical disk drive 506 controls reading / writing of data with respect to the optical disk 507 according to the control of the CPU 501. The optical disk 507 is a detachable recording medium from which data is read according to the control of the optical disk drive 506. As the optical disc 507, a writable recording medium can be used. In addition to the optical disk 507, the removable recording medium may be an MO, a memory card, or the like.

  The audio I / F 508 is connected to a speaker 509 for audio output and a microphone 510 for audio input. Audio is output from the speaker 509, and the audio received by the microphone 510 is A / D converted in the audio I / F 508. In addition, the audio | voice input from the microphone 510 can be transmitted to the server 301 with the video information mentioned later as audio | voice data.

  Further, examples of the input device 511 include a remote controller, a keyboard, a mouse, a touch panel, and the like provided with a plurality of keys for inputting characters, numerical values, various instructions, and the like.

  The video I / F 512 is connected to the display 513 and the camera 517. Specifically, the video I / F 512 includes, for example, a graphic controller that controls the entire display 513, a buffer memory such as a VRAM (Video RAM) that temporarily records image information that can be displayed immediately, and a graphic controller. Based on the output image data, the display 513 is configured by a control IC or the like.

  The display 513 displays icons, cursors, menus, windows, or various data such as characters and images. As the display 513, for example, a CRT, a TFT liquid crystal display, a plasma display, or the like can be adopted.

  The camera 517 captures images inside or outside the vehicle. The video may be either a still image or a moving image. For example, the camera 517 captures the behavior of the passenger inside the vehicle, and transmits the captured video information to the server 301 via the video I / F 512 and the communication I / F 514. In addition, the camera 517 captures a situation outside the vehicle, and transmits the captured video information to the server 301 via the video I / F 512 and the communication I / F 514. The video information transmitted to the server 301 is overwritten and stored as a drive recorder image.

  In addition, the communication I / F 514 is connected to a network via wireless and functions as an interface between the in-vehicle terminal 302 and the CPU 501. The communication I / F 514 is further connected to a communication network such as the Internet via wireless, and also functions as an interface between the communication network and the CPU 501.

  Further, the GPS unit 515 uses information received from GPS satellites and output values from various sensors 516 described later (for example, an angular velocity sensor, an acceleration sensor, a tire rotation number, etc.) to indicate information indicating the current position of the vehicle. calculate. The information indicating the current location is information for specifying one point on the map information such as latitude / longitude and altitude.

  The various sensors 516 are a vehicle speed sensor, an acceleration sensor, a G sensor, an angular velocity sensor, and the like, and their output values are used for calculation of the current location by the GPS unit 515, measurement of changes in speed and direction, and the like. Specifically, for example, the various sensors 516 output an odometer, a speed change amount, an azimuth change amount, and the like. Based on this output value, it is possible to analyze dynamics such as sudden braking and sudden steering.

  The various sensors 516 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 operation, turn signal input, accelerator pedal depression, brake pedal depression, or the like. The output values of the various sensors 516 are transmitted to the server 301 together with the video information via the communication I / F 514.

(Contents of processing of server 301)
Here, the contents of the processing of the server 301 according to the present embodiment will be described with reference to FIG. FIG. 6 is a flowchart illustrating the processing contents of the server according to the present embodiment. In the flowchart of FIG. 6, first, it is determined by the communication I / F 414 whether or not a communication request has been received from the in-vehicle terminal 302 (step S601). The communication request is information including, for example, a transmission permission request from the in-vehicle terminal 302 and vehicle identification information of the vehicle on which the in-vehicle terminal 302 is mounted.

  In step S601, the communication request is waited for and received (step S601: Yes). The CPU 401 authenticates the vehicle on which the in-vehicle terminal 302 that transmitted the communication request is installed, and each in-vehicle terminal 302 is authenticated. A storage area 310 is allocated to the communication terminal (step S602), and a communication permission notification for permitting communication is transmitted to the in-vehicle terminal 302 through the communication I / F 414 (step S603).

  Subsequently, as a result of transmitting the communication permission notification in step S603 by the communication I / F 414, the video information and the G value transmitted from the in-vehicle terminal 302 are received (step S604).

  Then, the video information received in step S604 is overwritten and recorded by a recording medium such as the magnetic disk 405 or the optical disk 407 (step S605). For the overwrite recording, for example, the overwrite recording area of the storage area 310 allocated in step S602 may be used.

  Subsequently, it is determined whether or not a communication end notification including a transmission end notification and vehicle identification information is received from the in-vehicle terminal 302 through the communication I / F 414 (step S606).

  When the communication end notification is received in step S606 (step S606: Yes), the CPU 401 stores the video information stored in the storage area of the storage area 310 in the archive (step S607).

  After the video information is stored in the archive, the CPU 401 deletes the video information stored in the storage area and cancels the allocation of the storage area 310 set for the in-vehicle terminal 302 (step S608). A series of processing ends.

  If no communication end notification is received in step S606 (step S606: No), it is determined whether a trigger is detected based on the G value received in step S604 (step S609). The detection of the trigger may be determined, for example, by comparing the G value with a specified value.

  When a trigger is detected in step S609 (step S609: Yes), the CPU 401 stores the video information before and after the trigger is detected in the storage area of the accumulation area 310 (step S610). The video information before and after the image may be, for example, video information of a time before and after a predetermined time from when the trigger is detected so that a video capable of specifying the trigger factor is included.

  If no trigger is detected in step S609 (step S609: No), the process returns to step S604 and the process is repeated.

  Then, the communication I / F 414 transmits a trigger detection notification to the server 301 (step S611), returns to step S604, and repeats the process.

  Although not described in the flowchart of FIG. 6, instead of using a G value equal to or greater than the specified value as a trigger in step S <b> 609, a case where transmission is interrupted may be detected as a trigger. In that case, after transmission is interrupted, when it is determined that a communication error has occurred after a predetermined time, the stored video information may be deleted and overwrite recording may be continued. In other words, if the cause of the transmission interruption is not an accident but a passage through a difficult communication point, the video information need not be stored.

  As described above, according to the present embodiment, by providing the server with a drive recorder function, video information of a plurality of vehicles can be stored by using a low-cost recording medium that is not specially specified, such as vibration countermeasures. be able to. Further, since it is easy to add a recording medium such as a hard disk in the server, the storage capacity is insufficient, and video information at the time of the accident can be recorded without leaking. Further, since the server does not break even if the vehicle is in an accident, the server can securely store the video information.

  In addition, according to the present embodiment, since the video information is not stored in the in-vehicle terminal of the vehicle used by each user, it is possible to prevent the video information from being tampered with by the user.

  Moreover, according to the present Example, the video information of several vehicle-mounted terminals can be managed centrally. In other words, a plurality of in-vehicle terminals can share one server. In addition, since the vehicle user transmits the video information to the server, the vehicle user can recognize that the vehicle is managed by the server and can drive safely.

  Further, according to the present embodiment, since the storage area is allocated only while the vehicle is traveling, the hardware area is effectively used without wastefully using the storage area while the vehicle is not traveling. Can be achieved.

  In addition, since there is room in the storage area for storing video information for each vehicle, if the prescribed value that triggers is set low, it is possible to reliably detect the occurrence of an accident and store the video information of the accident. it can.

  Furthermore, if the server according to the present embodiment is installed in the transportation company and the in-vehicle device of the present embodiment is installed in the vehicle used by the transportation company, the video information is managed in an integrated manner. Without investigating the vehicle drive recorder, it is possible to respond quickly and appropriately in the event of an accident. Further, it is possible to eliminate the accidental omission of the accident of each vehicle, and to perform appropriate driving guidance to each driver.

  Further, if the server manages the video information for each area, the video information of the vehicles that have collided can be specified, and the accident processing can be performed quickly and appropriately.

  The information recording method described in the present embodiment can be realized by executing a program prepared in advance on a computer such as a personal computer or a workstation. 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 being read from the recording medium by the computer. The program may be a transmission medium that can be distributed via a network such as the Internet.

  The present invention relates to a server device for recording 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 server device, information recording method, information recording program, and computer-readable recording medium.

  2. Description of the Related Art Conventionally, a drive recorder that records the surrounding situation of a running vehicle is known in the same manner as a flight recorder mounted on an airplane. Such a drive recorder is mounted on a vehicle and has a front camera for photographing the front of the vehicle, a rear camera for photographing 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. The recording information obtained by adding the vehicle position information and the time information to the image memory information is constantly recorded in the buffer memory.

  And if a drive recorder detects the impact more than predetermined value with an impact detection sensor, it will preserve | save in the storage memory the recording information between predetermined time from a detection time. As described above, when an incident such as a escaping incident is encountered, the recorded vehicle stored in the storage memory can be confirmed to identify the escaping vehicle (for example, see Patent Document 1 below).

JP 2004-224105 A

  However, in the above-described prior art, there is a problem that the storage memory provided for each drive recorder becomes insufficient in capacity when an impact exceeding a predetermined value is detected many times. On the other hand, when almost no impact exceeding a predetermined value is detected, the capacity of the storage memory provided for each drive recorder is hardly used, and the problem that the hardware resources cannot be effectively used is an example.

  In addition, since the storage memory is mounted on the vehicle, it is necessary to use a special specification to prevent vibration during driving and to maintain robustness when detecting impacts, and users are forced to increase costs. The problem is given as an example.

  In order to solve the above-described problems and achieve the object, the server device according to the invention of claim 1 is a server device capable of recording information transmitted from a plurality of mobile objects, and identifies the mobile objects Communication information receiving means for receiving communication information related to a communication request including information from the mobile body, authentication means for authenticating the mobile body using identification information indicated by the received communication information, and the authenticated An overwriting recording area for overwriting and recording information transmitted from a mobile unit for which communication is permitted (hereinafter referred to as a communication-permitted mobile unit). And a setting means for setting a storage area for storing the information overwritten and recorded in the overwrite recording area, and after transmitting the communication permission information, Until the notification indicating completion is received, the running state information including video information related to the surrounding video of the communication-permitted mobile body continuously transmitted from the communication-permitted mobile body and behavior information about the behavior of the communication-permitted mobile body Recording means for always recording in the overwrite recording area, and when the received behavior information indicates that the behavior of the communication-permitted mobile body is dangerous, the video information recorded in the overwrite recording area Storing means for storing the data in the storage area.

  According to an eighth aspect of the present invention, there is provided an information recording method for a server device capable of recording information transmitted from a plurality of mobile objects, and a communication request including identification information for identifying the mobile objects. A communication information receiving step for receiving communication information from the mobile body, an authentication step for authenticating the mobile body using identification information indicated by the received communication information, and the authenticated mobile body A transmission step of transmitting communication permission information for permitting communication, an overwrite recording area for overwriting recording of information transmitted from a mobile body permitted to communicate (hereinafter referred to as a communication permitted mobile body), and the overwrite recording area A setting step for setting a storage area for storing the overwritten information, and after transmitting the communication permission information, a notification indicating the end of the communication is received from the communication permitted mobile body. Until this time, traveling state information including video information related to the surrounding video of the communication-permitted mobile body that is continuously transmitted from the communication-permitted mobile body and behavior information about the behavior of the communication-permitted mobile body is constantly recorded in the overwrite recording area. And when the received behavior information indicates that the behavior of the communication-permitted mobile body is dangerous, the video information recorded in the overwrite recording area is stored in the storage area. And a storage step.

  An information recording program according to claim 9 causes a computer to execute the information recording method according to claim 8.

  According to a tenth aspect of the present invention, a computer-readable recording medium records the information recording program according to the ninth aspect.

It is a block diagram which shows an example of a functional structure of the information recording device concerning this Embodiment. It is a flowchart which shows the content of the process of the information recording device concerning this Embodiment. It is explanatory drawing which shows the outline | summary of the system for drive recorders concerning a present Example. It is a block diagram which shows an example of the hardware constitutions of the server concerning a present Example. It is a block diagram which shows an example of the hardware constitutions of the vehicle-mounted terminal concerning a present Example. It is a flowchart which shows the content of the process of the server concerning a present Example.

  Exemplary embodiments of a server device, an information recording method, an information recording program, and a computer-readable recording medium according to the present invention will be explained below in detail with reference to the accompanying drawings.

(Embodiment)
(Functional configuration of information recording device)
The functional configuration of the information recording apparatus according to this embodiment will be described with reference to FIG. FIG. 1 is a block diagram showing an example of a functional configuration of the information recording apparatus according to the present embodiment.

  In FIG. 1, an information recording apparatus 100 that overwrites and records video information related to peripheral video of a mobile body that is continuously transmitted from the mobile body includes a reception unit 101, an authentication unit 102, a transmission unit 103, and a determination unit 104. , A storage unit 105 and a setting unit 106.

  The receiving unit 101 receives communication information related to a communication request including identification information for identifying the mobile body from the mobile body. The identification information may be, for example, an ID (IDentifier) number assigned to the mobile object. Further, the communication information may be information relating to the end of communication instead of a communication request, for example.

  In addition, as a result of transmission of communication permission information by the transmission unit 103 described later, the reception unit 101 receives traveling state information including behavior information regarding the behavior of the moving body and video information regarding surrounding video transmitted from the moving body. It is good.

  The authentication unit 102 authenticates the mobile object using the identification information in the communication information received by the reception unit 101. The mobile object may be authenticated, for example, by using the identification information transmitted from the mobile object to authenticate whether or not the mobile object that has transmitted the communication information is a pre-registered mobile object.

  The transmission unit 103 transmits communication permission information for permitting communication to the mobile body authenticated by the authentication unit 102.

  The determination unit 104 refers to the behavior information received by the reception unit 101 and determines whether the behavior of the moving object is dangerous. The behavior information is information including a detection value of a sensor that detects the behavior of the moving object, for example.

  Specifically, for example, the determination unit 104 compares the detected value of the sensor in the behavior information received by the receiving unit 101 with a threshold value indicating the dangerous behavior of the moving object, thereby determining the behavior of the moving object. It may be determined whether or not is dangerous.

  The storage unit 105 overwrites and records the video information regarding the peripheral video received by the reception unit 101 in the overwrite recording area. The entire running state information including the behavior information related to the behavior of the moving object and the video information related to the surrounding video may be overwritten and recorded.

  In addition, when the determination unit 104 determines that the behavior of the moving object is dangerous, the storage unit 105 stores the video information that has been overwritten. Specifically, for example, the storage unit 105 may store the video information and the identification information of the moving body that is the transmission source of the video information in association with each other. Further, the storage unit 105 may store the behavior information and the video information in association with each other when it is determined that the behavior of the moving object is dangerous.

  In addition, when the determination unit 104 determines that the behavior of the moving object is dangerous, the storage unit 105 stores the video information overwritten in the overwrite recording area for the recording area set by the setting unit 106 described later. It is good also as saving to a preservation | save area | region.

  Further, when the communication of the video information transmitted from the mobile body is interrupted, the storage unit 105 stores the video information overwritten in the overwrite recording area for the recording area set by the setting unit 106 to be described later. It may be stored. Thereby, it is possible to store video information when communication is broken due to an accident and communication is interrupted without sending behavior information at that time. Further, when it can be determined that communication is simply interrupted due to communication circumstances, such as when communication is restored within a predetermined time, the video information stored in the storage area may be deleted and overwriting recording of the video information may be resumed. .

  Further, the storage unit 105 may archive the video information stored in the storage area when the reception unit 101 receives communication information regarding the end of communication.

  The setting unit 106 sets a recording area including an overwrite recording area to be overwritten and a storage area to be saved for video information transmitted from the mobile body authenticated by the authentication unit 102.

(Contents of information recording device processing)
Next, the processing contents 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 receiving unit 101 determines whether a communication request has been received (step S201).

  In step S201, after waiting for a communication request to be received (step S201: Yes), the authentication unit 102 uses the identification information included in the communication request received in step S201 to Authentication is performed (step S202).

  Next, the setting unit 106 sets a recording area including an overwrite recording area to be overwritten and a storage area to be saved for the video information transmitted from the mobile body authenticated in step S202 (step S203).

  Subsequently, the transmission unit 103 transmits communication permission information for permitting communication to the mobile body authenticated in step S202 (step S204). In the flowchart of FIG. 2, in step S203 and step S204, the communication permission information is transmitted after the recording area is set. However, the order is not limited. Specifically, for example, the recording area may be set after transmitting the communication permission information.

  Next, as a result of the transmission of the communication permission information in step S204 by the transmission unit 103, the driving state information including behavior information relating to the behavior of the moving body and video information relating to the surrounding video transmitted from the moving body is received (step S205). ).

  And the determination part 104 determines the behavior of a moving body based on the driving | running | working state information received in step S205 (step S206). For example, the behavior of the moving object is determined by comparing the detected value of the sensor in the behavior information received in step S205 with a threshold value indicating the dangerous behavior of the moving object. It may be determined whether or not there is.

  Next, when the storage unit 105 determines that the behavior of the moving object is dangerous in step S206, the video information overwritten in the overwrite recording area is stored in the storage area for the recording area set in step S203. Save (step S207).

  Then, the receiving unit 101 determines whether or not the end of communication has been received. If received (step S208: Yes), the video information stored in the storage area is archived (step S209), and a series of processes is performed. Exit.

  If the end of communication is not accepted in step S208 (step S208: No), the process returns to step S205 and the process is repeated.

  Although not described in the flowchart of FIG. 2, instead of determining the behavior of the moving body in step S206, when communication of video information transmitted from the moving body is interrupted, it is overwritten in the overwrite recording area. The video information may be stored in a storage area. With such a configuration, even when an abnormality other than dangerous behavior occurs in the moving body, video information can be appropriately stored.

  Furthermore, if communication is restored within a specified time after communication is interrupted, or behavior information at the time when communication is interrupted after communication is recovered, it is determined that there is no dangerous moving body behavior from the behavior information. When it can be determined that the communication is simply interrupted due to communication circumstances, the video information stored in the storage area may be deleted and overwriting recording of the video information may be resumed. By adopting such a configuration, overwriting recording can be continued if there is no abnormality in the moving body just by passing through a location where communication is difficult.

  Further, when communication is restored, the video information and behavior information during communication interruption may be requested and acquired, and the behavior information may be determined to store necessary video information.

  Also, when communication is restored, first request and obtain behavior information while communication is interrupted, and if it is determined that the behavior of the moving body is dangerous by judging the behavior information, before and after The video information may be requested, acquired, and stored.

  As described above, according to the present embodiment, the driving state information is received from the moving body by communication to determine the behavior, and the video information around the moving body is stored when the behavior of the moving body is dangerous. be able to. Therefore, appropriate video information can be stored without depending on the specifications and conditions of the memory mounted on the mobile body.

  In addition, according to the present embodiment, a recording area is set for a mobile body that has requested communication among a plurality of mobile bodies, video information is overwritten and stored, and the recording area is recorded upon completion of communication. The configuration is canceled. Therefore, video information of a plurality of moving bodies can be managed in a unified manner, and a recording area can be shared with a plurality of moving bodies, so that the recording area can be effectively used.

  Examples of the present invention will be described below. In this embodiment, for example, a server that receives video information and a G value output from a G sensor that detects an impact from a vehicle-mounted terminal mounted on a moving body such as a vehicle (including a four-wheeled vehicle and a two-wheeled vehicle) An example when the information recording apparatus of the invention is implemented will be described.

(Overview of drive recorder system)
The outline of the drive recorder system according to the present embodiment will be described with reference to FIG. FIG. 3 is an explanatory diagram showing an overview of the drive recorder system according to the present embodiment.

  In FIG. 3, the drive recorder system 300 includes a server 301 and in-vehicle terminals 302 (302a, 302b, 302c) mounted on a plurality of vehicles.

  The server 301 has a drive recorder function based on video information and G values transmitted from the in-vehicle terminals 302 (302a, 302b, 302c). Specifically, for example, the server 301 records video information in the storage areas 310 (310a, 310b, 310c) set in the recording medium for each in-vehicle terminal 302 (302a, 302b, 302c).

  Although details will be described with reference to FIG. 6, the server 301 receives a communication request including a transmission permission request and vehicle identification information from the in-vehicle terminal 302 (302a, 302b, 302c), and uses the received vehicle identification information. Then, it is authenticated whether or not the vehicle on which the in-vehicle terminal 302 (302a, 302b, 302c) that transmitted the communication request is a registered vehicle registered in advance.

  Next, when the vehicle equipped with the in-vehicle terminal 302 (302a, 302b, 302c) that has transmitted the communication request is authenticated, the server 301 sends a communication permission notification for permitting communication to the in-vehicle terminal 302 (302a, 302b, 302c). ). Subsequently, the server 301 sets a storage area 310 (310a, 310b, 310c) for recording video information and G values transmitted from a vehicle on which the in-vehicle terminal 302 (302a, 302b, 302c) is mounted.

  The capacity of the storage area 310 (310a, 310b, 310c) may be a predetermined capacity, for example, or based on the past storage amount history in the in-vehicle terminals 302 (302a, 302b, 302c) mounted on the respective vehicles. It may be set.

  The accumulation area 310 (310a, 310b, 310c) may be composed of, for example, an overwrite recording area for overwriting and a storage area when a trigger is detected. More specifically, for example, in the setting of the storage area 310 (310a, 310b, 310c), when a communication request is received from the in-vehicle terminal 302a, the vehicle in which the in-vehicle terminal 302a is mounted is authenticated and a communication permission notification is transmitted. In addition to transmitting to the terminal 302a, the storage area 310a is set.

  The setting of the storage area 310 (310a, 310b, 310c) may be changed according to the stored capacity, for example. Specifically, for example, the setting of the accumulation area 310 (310a, 310b, 310c) may be configured such that once the predetermined rate P is accumulated, the allocation is changed until the accumulated amount is reduced to the predetermined rate Q. More specifically, for example, the setting of the storage area 310 (310a, 310b, 310c) is performed when the capacity of 100 MB (megabytes) is initially allocated with P being 80% and Q being 50%. When the storage capacity reaches 80 MB, the capacity of the storage area 310 (310a, 310b, 310c) may be increased to 160 MB so that 80 MB becomes 50%.

  In addition, the storage area 310 (310a, 310b, 310c), for example, is recorded sequentially from a vacant area of the recording medium instead of being set for each vehicle, and the recorded position and the vehicle are managed. Alternatively, the vehicle identification information may be added to the video information and recorded.

  Then, the server 301 overwrites and records the video information transmitted from each in-vehicle terminal 302 (302a, 302b, 302c) in the storage area 310 (310a, 310b, 310c), and also each in-vehicle terminal 302 (302a, 302b). , 302c) is constantly monitored.

  The G value monitor detects, for example, when the received G value is greater than or equal to a specified value or when transmission is interrupted as a trigger, and for a predetermined time before and after the trigger is detected (transmission is interrupted). To save the information. In this way, by monitoring the G value, it is possible to save video information when the vehicle receives a G value greater than a specified value or encounters an accident in which transmission is interrupted.

  Here, after transmission is interrupted, when it is determined that a communication error has occurred after a predetermined time, the stored video information may be deleted and overwrite recording may be continued. In other words, if the cause of the transmission interruption is not an accident but a passage through a difficult communication point, the video information need not be stored.

  Further, when the server 301 detects a trigger, the server 301 may transmit a trigger detection notification to the in-vehicle terminal 302 (302a, 302b, 302c) to prompt a check as to whether or not there has been a contact due to an accident or the like. For example, the detection notification may be collectively performed after a transmission end notification described later, or by determining the possibility of contact based on the size of the G value and the image, and determining whether to transmit immediately. Also good. Also, the stored video information may be transmitted to the in-vehicle terminal 302 (302a, 302b, 302c) together with the detection notification.

  Thus, by performing detection notification, the vehicle user can accurately recognize accidents and dangerous driving, and can safely drive. Further, video information that is not an accident may be deleted as unnecessary information.

  Then, the server 301 receives a communication end notification including the transmission end notification and the vehicle identification information from the in-vehicle terminal 302 (302a, 302b, 302c), and transmits the communication end notification using the received vehicle identification information. It is authenticated whether or not the vehicle on which the in-vehicle terminal 302 (302a, 302b, 302c) is a registered vehicle. When authenticated, an authentication notification or the like may be returned to the in-vehicle terminal 302 (302a, 302b, 302c).

  When the vehicle equipped with the in-vehicle terminal 302 (302a, 302b, 302c) that transmitted the communication end notification is authenticated, the server 301 stores the stored video information in the archive. The archive is, for example, a place where video information saved in the past is stored, and may be on the hard disk of the server 301 or a recording medium such as an optical disk. In addition, the archive may be divided into discs or areas for each vehicle or user, or sequentially recorded from the vacant area of the archive to manage the recorded position and the vehicle, or video information It is good also as adding and recording vehicle identification information.

  After storing the video information in the archive, the server 301 deletes the video information stored on the hard disk and stores the storage area 310 (310a, 310b, 310c) set in the in-vehicle terminal 302 (302a, 302b, 302c). Is released. The released storage area 310 (310a, 310b, 310c) is assigned to the in-vehicle terminal 302 (302a, 302b, 302c) that next requested the communication.

  With such a configuration, video information of a plurality of vehicles can be centrally managed and a plurality of vehicles can share the storage area 310 (310a, 310b, 310c). It leads to use.

  Note that the video information stored in the archive may be deleted after a predetermined storage period has elapsed or after the accident verification or insurance process is completed.

  The in-vehicle terminals 302 (302a, 302b, 302c) transmit a communication request including a transmission permission request and vehicle identification information of the own vehicle to the server 301 when the engine of each vehicle is activated. The transmission of the communication request may be, for example, detecting the release of the parking brake or detecting the start of traveling based on the traveling speed instead of detecting the start of the engine.

  As a result of transmitting the communication request to the server 301 as a result of transmitting the communication request to the server 301, the in-vehicle terminal 302 (302 a, 302 b, 302 c) activates the camera and continues to capture images in a predetermined direction. In addition, the in-vehicle terminal 302 (302a, 302b, 302c) continues to acquire the G value by the G sensor in accordance with the imaging of the video in the predetermined direction, and continues to acquire the current time and position information of the current time.

  The in-vehicle terminal 302 (302a, 302b, 302c) transmits the video information, G value, vehicle identification information, position information, time information, and the like to the server 301 in real time by always-on wireless communication.

  Further, the in-vehicle terminal 302 (302a, 302b, 302c) may be configured to include a buffer memory in order to cover a communication time lag. Specifically, for example, when the server 301 detects a communication error during reception of video information, the buffer memory is used when a retransmission request is made to the in-vehicle terminal 302 (302a, 302b, 302c). The video information that matches the retransmission request may be retransmitted from the video information recorded in the buffer memory of the in-vehicle terminal 302 (302a, 302b, 302c) that has accepted the request. In this case, the capacity of the buffer memory is a capacity capable of recording video information for the time required for detecting a communication error and transmitting a retransmission request by the server 301 and for retransmission by the in-vehicle terminal 302 (302a, 302b, 302c).

  In FIG. 3, the constant communication has been described. However, the above-described buffer memory may be used to perform intermittent communication. Specifically, for example, intermittent communication may be recorded in a buffer memory such as video information and G values for a predetermined time and transmitted to the server 301 collectively.

  The in-vehicle terminal 302 (302a, 302b, 302c) transmits a communication end notification including a transmission end notification and vehicle identification information to the server 301 when the vehicle engine is stopped. The transmission end notification may be transmitted, for example, by detecting that the parking brake is applied during parking or detecting the end of traveling based on the traveling speed instead of detecting the stop of the engine.

  When a communication request and a communication end notification are transmitted by detecting a parking brake, a traveling speed, and the like, the in-vehicle terminal 302 (302a, 302b, 302c) transmits a communication request and a communication each time the vehicle temporarily stops and resumes traveling. An end notification will be sent.

  Further, when transmitting a communication request and a communication end notification by detecting the start and stop of the engine, the in-vehicle terminal 302 (302a, 302b, 302c) is a video if the engine is starting even when parked. Information and the like are transmitted to the server 301.

  Furthermore, in addition to starting and stopping the engine, a parking brake, a traveling speed, and the like may be detected, and transmission pause / resumption notification such as video information may be transmitted to the server 301. In this case, when receiving the transmission suspension, the server 301 suspends the overwrite recording while holding the storage area 310 (310a, 310b, 310c) assigned to the in-vehicle terminal 302 (302a, 302b, 302c). Also good. And it is good also as not making it the trigger which preserve | saves video information that communication has been interrupted until a restart notification is received.

(Hardware configuration of server 301)
Here, the hardware configuration of the server 301 according to the present embodiment will be described with reference to FIG. FIG. 4 is a block diagram illustrating an example of the hardware configuration of the server according to the present embodiment.

  4, the server 301 includes a CPU 401, a ROM 402, a RAM 403, a magnetic disk drive 404, a magnetic disk 405, an optical disk drive 406, an optical disk 407, an audio I / F (interface) 408, and a speaker 409. , An input device 411, a video I / F 412, a display 413, and a communication I / F 414. Each component 401 to 414 is connected by a bus 420.

  First, the CPU 401 governs overall control of the server 301. The ROM 402 stores various programs such as a boot program, an authentication program, and an information recording program. The RAM 403 is used as a work area for the CPU 401.

  The authentication program causes a vehicle equipped with the in-vehicle terminal 302 to be authenticated. Specifically, for example, the authentication is performed by authenticating whether the vehicle identification information transmitted from the in-vehicle terminal 302 is a registered vehicle registered in advance.

  When the trigger is detected by the G value transmitted from the in-vehicle terminal 302, the information recording program switches the recording destination of the video information of the vehicle that has always been overwritten. The recording destination of the video information may have, for example, an overwrite recording area for always overwriting and a storage recording area for storing the video information when a trigger is detected, or a recording medium for overwriting recording And a storage medium for storage. The overwrite recording area and the storage recording area may be set for each authenticated in-vehicle terminal 302.

  The trigger is, for example, an output of a sensor that triggers storage of an image for a drive recorder imaged by a camera in the in-vehicle terminal 302, and the output value transmitted from the in-vehicle terminal 302 is determined by the CPU 401. The configuration may be such that a trigger is detected when the output value exceeds the threshold value. This threshold value may be a value that can determine, for example, the occurrence of a contact accident 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 on which the in-vehicle terminal 302 is mounted exceeds a threshold value determined by the CPU 401. Also, trigger information may be recorded together with the drive recorder image.

  Moreover, a trigger is good also as a trigger, for example, when communication with the vehicle-mounted terminal 302 stops. In other words, the information recording program can store the video information when an accident where transmission is interrupted is encountered. In addition, after transmission is interrupted, when it is determined that a communication error has occurred after a predetermined time, the stored video information may be deleted to continue overwriting.

  The magnetic disk drive 404 controls the reading / writing of the data with respect to the magnetic disk 405 according to control of CPU401. The magnetic disk 405 records data written under the control of the magnetic disk drive 404. As the magnetic disk 405, for example, an HD (hard disk) or an FD (flexible disk) can be used.

  The optical disc drive 406 controls reading / writing of data with respect to the optical disc 407 according to the control of the CPU 401. The optical disc 407 is a detachable recording medium from which data is read according to the control of the optical disc drive 406. As the optical disc 407, a writable recording medium can be used. In addition to the optical disk 407, the removable recording medium may be an MO, a memory card, or the like.

  As an example of information recorded on the magnetic disk 405 and the optical disk 407, information on a registered vehicle registered in advance can be cited. The server 301 authenticates the vehicle on which the in-vehicle terminal 302 is mounted based on the information regarding the registered vehicle.

  The audio I / F 408 is connected to a speaker 409 for audio output, and audio is output from the speaker 409.

  Examples of the input device 411 include a remote controller including a plurality of keys for inputting characters, numerical values, various instructions, a keyboard, a mouse, a touch panel, and the like.

  The video I / F 412 is connected to the display 413. Specifically, the video I / F 412 includes, for example, a graphic controller that controls the entire display 413, a buffer memory such as a VRAM (Video RAM) that temporarily records image information that can be displayed immediately, and a graphic controller. Based on the output image data, the display 413 is configured by a control IC that controls display.

  The display 413 displays icons, cursors, menus, windows, or various data such as characters and images. As the display 413, for example, a CRT, a TFT liquid crystal display, a plasma display, or the like can be adopted.

  Further, the communication I / F 414 is connected to a network via wireless and functions as an interface between the server 301 and the CPU 401. The communication I / F 414 is further connected to a communication network such as the Internet via wireless, and also functions as an interface between the communication network and the CPU 401.

  Note that the reception unit 101, the authentication unit 102, the transmission unit 103, the determination unit 104, the storage unit 105, and the setting unit 106 included in the information recording apparatus 100 illustrated in FIG. 1 are the ROM 402, the RAM 403, The CPU 401 executes a predetermined program using programs and data recorded on the magnetic disk 405, the optical disk 407, etc., and controls each part in the server 301 to realize the function.

  That is, the server 301 according to the present embodiment executes the program recorded in the ROM 402 as a recording medium in the server 301, so that the functions provided in the information recording apparatus 100 shown in FIG. Can be done with.

(Hardware configuration of in-vehicle terminal 302)
Next, the hardware configuration of the in-vehicle terminal 302 according to the present embodiment will be described with reference to FIG. FIG. 5 is a block diagram illustrating an example of a hardware configuration of the in-vehicle terminal according to the present embodiment.

  In FIG. 5, an in-vehicle terminal 302 is mounted on a moving body such as a vehicle, and includes a CPU 501, ROM 502, RAM 503, magnetic disk drive 504, magnetic disk 505, optical disk drive 506, optical disk 507, and audio. I / F (interface) 508, speaker 509, microphone 510, input device 511, video I / F 512, display 513, communication I / F 514, GPS unit 515, various sensors 516, and camera 517 And. In addition, the components 501 to 517 are connected by a bus 520, respectively.

  First, the CPU 501 governs overall control of the in-vehicle terminal 302. The ROM 502 records various programs such as a boot program. The RAM 503 is used as a work area for the CPU 501.

  The magnetic disk drive 504 controls the reading / writing of the data with respect to the magnetic disk 505 according to control of CPU501. The magnetic disk 505 records data written under the control of the magnetic disk drive 504. As the magnetic disk 505, for example, an HD (hard disk) or an FD (flexible disk) can be used.

  The optical disk drive 506 controls reading / writing of data with respect to the optical disk 507 according to the control of the CPU 501. The optical disk 507 is a detachable recording medium from which data is read according to the control of the optical disk drive 506. As the optical disc 507, a writable recording medium can be used. In addition to the optical disk 507, the removable recording medium may be an MO, a memory card, or the like.

  The audio I / F 508 is connected to a speaker 509 for audio output and a microphone 510 for audio input. Audio is output from the speaker 509, and the audio received by the microphone 510 is A / D converted in the audio I / F 508. In addition, the audio | voice input from the microphone 510 can be transmitted to the server 301 with the video information mentioned later as audio | voice data.

  Further, examples of the input device 511 include a remote controller, a keyboard, a mouse, a touch panel, and the like provided with a plurality of keys for inputting characters, numerical values, various instructions, and the like.

  The video I / F 512 is connected to the display 513 and the camera 517. Specifically, the video I / F 512 includes, for example, a graphic controller that controls the entire display 513, a buffer memory such as a VRAM (Video RAM) that temporarily records image information that can be displayed immediately, and a graphic controller. Based on the output image data, the display 513 is configured by a control IC or the like.

  The display 513 displays icons, cursors, menus, windows, or various data such as characters and images. As the display 513, for example, a CRT, a TFT liquid crystal display, a plasma display, or the like can be adopted.

  The camera 517 captures images inside or outside the vehicle. The video may be either a still image or a moving image. For example, the camera 517 captures the behavior of the passenger inside the vehicle, and transmits the captured video information to the server 301 via the video I / F 512 and the communication I / F 514. In addition, the camera 517 captures a situation outside the vehicle, and transmits the captured video information to the server 301 via the video I / F 512 and the communication I / F 514. The video information transmitted to the server 301 is overwritten and stored as a drive recorder image.

  In addition, the communication I / F 514 is connected to a network via wireless and functions as an interface between the in-vehicle terminal 302 and the CPU 501. The communication I / F 514 is further connected to a communication network such as the Internet via wireless, and also functions as an interface between the communication network and the CPU 501.

  Further, the GPS unit 515 uses information received from GPS satellites and output values from various sensors 516 described later (for example, an angular velocity sensor, an acceleration sensor, a tire rotation number, etc.) to indicate information indicating the current position of the vehicle. calculate. The information indicating the current location is information for specifying one point on the map information such as latitude / longitude and altitude.

  The various sensors 516 are a vehicle speed sensor, an acceleration sensor, a G sensor, an angular velocity sensor, and the like, and their output values are used for calculation of the current location by the GPS unit 515, measurement of changes in speed and direction, and the like. Specifically, for example, the various sensors 516 output an odometer, a speed change amount, an azimuth change amount, and the like. Based on this output value, it is possible to analyze dynamics such as sudden braking and sudden steering.

  The various sensors 516 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 operation, turn signal input, accelerator pedal depression, brake pedal depression, or the like. The output values of the various sensors 516 are transmitted to the server 301 together with the video information via the communication I / F 514.

(Contents of processing of server 301)
Here, the contents of the processing of the server 301 according to the present embodiment will be described with reference to FIG. FIG. 6 is a flowchart illustrating the processing contents of the server according to the present embodiment. In the flowchart of FIG. 6, first, it is determined by the communication I / F 414 whether or not a communication request has been received from the in-vehicle terminal 302 (step S601). The communication request is information including, for example, a transmission permission request from the in-vehicle terminal 302 and vehicle identification information of the vehicle on which the in-vehicle terminal 302 is mounted.

  In step S601, the communication request is waited for and received (step S601: Yes). The CPU 401 authenticates the vehicle on which the in-vehicle terminal 302 that transmitted the communication request is installed, and each in-vehicle terminal 302 is authenticated. A storage area 310 is allocated to the communication terminal (step S602), and a communication permission notification for permitting communication is transmitted to the in-vehicle terminal 302 through the communication I / F 414 (step S603).

  Subsequently, as a result of transmitting the communication permission notification in step S603 by the communication I / F 414, the video information and the G value transmitted from the in-vehicle terminal 302 are received (step S604).

  Then, the video information received in step S604 is overwritten and recorded by a recording medium such as the magnetic disk 405 or the optical disk 407 (step S605). For the overwrite recording, for example, the overwrite recording area of the storage area 310 allocated in step S602 may be used.

  Subsequently, it is determined whether or not a communication end notification including a transmission end notification and vehicle identification information is received from the in-vehicle terminal 302 through the communication I / F 414 (step S606).

  When the communication end notification is received in step S606 (step S606: Yes), the CPU 401 stores the video information stored in the storage area of the storage area 310 in the archive (step S607).

  After the video information is stored in the archive, the CPU 401 deletes the video information stored in the storage area and cancels the allocation of the storage area 310 set for the in-vehicle terminal 302 (step S608). A series of processing ends.

  If no communication end notification is received in step S606 (step S606: No), it is determined whether a trigger is detected based on the G value received in step S604 (step S609). The detection of the trigger may be determined, for example, by comparing the G value with a specified value.

  When a trigger is detected in step S609 (step S609: Yes), the CPU 401 stores the video information before and after the trigger is detected in the storage area of the accumulation area 310 (step S610). The video information before and after the image may be, for example, video information of a time before and after a predetermined time from when the trigger is detected so that a video capable of specifying the trigger factor is included.

  If no trigger is detected in step S609 (step S609: No), the process returns to step S604 and the process is repeated.

  Then, the communication I / F 414 transmits a trigger detection notification to the server 301 (step S611), returns to step S604, and repeats the process.

  Although not described in the flowchart of FIG. 6, instead of using a G value equal to or greater than the specified value as a trigger in step S <b> 609, a case where transmission is interrupted may be detected as a trigger. In that case, after transmission is interrupted, when it is determined that a communication error has occurred after a predetermined time, the stored video information may be deleted and overwrite recording may be continued. In other words, if the cause of the transmission interruption is not an accident but a passage through a difficult communication point, the video information need not be stored.

  As described above, according to the present embodiment, by providing the server with a drive recorder function, video information of a plurality of vehicles can be stored by using a low-cost recording medium that is not specially specified, such as vibration countermeasures. be able to. Further, since it is easy to add a recording medium such as a hard disk in the server, the storage capacity is insufficient, and video information at the time of the accident can be recorded without leaking. Further, since the server does not break even if the vehicle is in an accident, the server can securely store the video information.

  In addition, according to the present embodiment, since the video information is not stored in the in-vehicle terminal of the vehicle used by each user, it is possible to prevent the video information from being tampered with by the user.

  Moreover, according to the present Example, the video information of several vehicle-mounted terminals can be managed centrally. In other words, a plurality of in-vehicle terminals can share one server. In addition, since the vehicle user transmits the video information to the server, the vehicle user can recognize that the vehicle is managed by the server and can drive safely.

  Further, according to the present embodiment, since the storage area is allocated only while the vehicle is traveling, the hardware area is effectively used without wastefully using the storage area while the vehicle is not traveling. Can be achieved.

  In addition, since there is room in the storage area for storing video information for each vehicle, if the prescribed value that triggers is set low, it is possible to reliably detect the occurrence of an accident and store the video information of the accident. it can.

  Furthermore, if the server according to the present embodiment is installed in the transportation company and the in-vehicle device of the present embodiment is installed in the vehicle used by the transportation company, the video information is managed in an integrated manner. Without investigating the vehicle drive recorder, it is possible to respond quickly and appropriately in the event of an accident. Further, it is possible to eliminate the accidental omission of the accident of each vehicle, and to perform appropriate driving guidance to each driver.

  Further, if the server manages the video information for each area, the video information of the vehicles that have collided can be specified, and the accident processing can be performed quickly and appropriately.

  The information recording method described in the present embodiment can be realized by executing a program prepared in advance on a computer such as a personal computer or a workstation. 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 being read from the recording medium by the computer. The program may be a transmission medium that can be distributed via a network such as the Internet.

DESCRIPTION OF SYMBOLS 100 Information recording device 101 Receiving part 102 Authentication part 103 Transmission part 104 Determination part 105 Storage part 106 Setting part

Claims (12)

In an information recording apparatus for overwriting and recording video information relating to peripheral video of the mobile body that is continuously transmitted from a plurality of mobile bodies,
Communication information receiving means for receiving communication information relating to a communication request including identification information for identifying the mobile body from the mobile body;
Authentication means for authenticating the mobile object using the identification information in the communication information received by the communication information receiving means;
Transmitting means for transmitting communication permission information for permitting communication to the mobile body authenticated by the authentication means;
As a result of transmission of communication permission information by the transmission means, traveling state information receiving means for receiving traveling state information including behavior information relating to the behavior of the moving body and video information relating to surrounding images transmitted from the moving body;
Determining means for determining whether the behavior of the moving body is dangerous with reference to the behavior information received by the running state information receiving means;
A storage unit that stores the video information that has been overwritten when the determination unit determines that the behavior of the moving object is dangerous;
An information recording apparatus comprising: The storage means includes
The information recording apparatus according to claim 1, wherein the video information and the identification information of the mobile body that is a transmission source of the video information are stored in association with each other. The storage means includes
The information recording apparatus according to claim 1, wherein the behavior information when the behavior of the moving body is determined to be dangerous and the video information are stored in association with each other. The video information transmitted from the mobile body authenticated by the authentication means, further comprising a setting means for setting a recording area consisting of an overwrite recording area to be overwritten and a storage area to be saved,
The storage means includes
2. The video information that is overwritten and recorded in the overwrite recording area is stored in the storage area when the determination unit determines that the behavior of the moving body is dangerous. Information recording device. The storage means includes
When communication of the video information transmitted from the mobile body is interrupted, the video information that is overwritten in the overwrite recording area is stored in the storage area, and when communication is restored, the video information is overwritten. The information recording apparatus according to claim 4, wherein the information recording apparatus is resumed. The storage means includes
When communication of the video information transmitted from the mobile body is interrupted, the video information overwritten and recorded in the overwrite recording area is stored in the storage area, and when communication is restored within a predetermined time, the storage is performed. 5. The information recording apparatus according to claim 4, wherein the video information stored in the area is erased and overwriting recording of the video information is resumed. The communication information receiving means includes
Receiving communication information about the end of communication from the mobile,
The setting means includes
5. The information recording apparatus according to claim 4, wherein when the communication information regarding the end of communication is received by the communication information receiving means, the setting of the recording area is canceled. The storage means includes
5. The information recording apparatus according to claim 4, wherein when the communication information regarding the end of communication is received by the communication information receiving means, the video information stored in the storage area is archived. The behavior information is
Including a detection value of a sensor for detecting the behavior of the moving object,
The determination means includes
By comparing the detected value in the behavior information received by the traveling state information receiving means with a threshold value indicating the dangerous behavior of the moving object, it is determined whether or not the behavior of the moving object is dangerous. The information recording apparatus according to claim 1, wherein the information recording apparatus determines. In an information recording method for overwriting recording of video information related to peripheral video of the mobile body that is continuously transmitted from a plurality of mobile bodies,
A communication information receiving step for receiving communication information related to a communication request including identification information for identifying the mobile body from the mobile body;
An authentication step of authenticating the mobile body using the identification information in the communication information received by the communication information receiving step;
A transmission step of transmitting communication permission information for permitting communication to the mobile body authenticated by the authentication step;
As a result of transmission of communication permission information by the transmission step, a driving state information receiving step of receiving driving state information including behavior information related to the behavior of the moving body and video information related to surrounding video transmitted from the moving body;
A determination step of determining whether or not the behavior of the moving body is dangerous with reference to the behavior information received by the traveling state information reception step;
If it is determined by the determination step that the behavior of the moving body is dangerous, a storage step of storing the video information that has been overwritten,
An information recording method comprising:   An information recording program for causing a computer to execute the information recording method according to claim 10.   A computer-readable recording medium on which the information recording program according to claim 11 is recorded.

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