JP2010182209A - Drive recorder - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a drive recorder capable of properly setting various pieces of information which can be recorded in a recording means, or the like, depending on the condition. <P>SOLUTION: A drive recorder (2) includes imaging means (3, 4, and 5) for imaging image information, state detecting sections (50 and 51) for detecting state information representing a state of a vehicle (1), and a control section (20) which performs control so as to record the image information and the state information into a recording means (7). The control section is configured so as to be able to set whether recording the image information into the recording means and recording the state information into the recording means is to be executed, in synchronism or in asynchronism. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a drive recorder, and more particularly to a drive recorder capable of recording various information such as image information, status information, and audio information.

  There has been proposed a so-called drive recorder that captures an image of the periphery of a vehicle with a camera installed in the vehicle and records the captured image information. By installing a drive recorder in the vehicle, it is possible to find out the cause of an accident in the event of an accident, and to provide safe driving education for crew members.

  Patent Documents 1 and 2 disclose a drive recorder that cyclically stores an image captured by an in-vehicle camera and records the image stored in the event of an accident in other recording means. Patent Documents 3 and 4 disclose drive recorders that circulate and store travel data such as vehicle speed and transmission shift position and record the travel data stored in the event of an accident in other recording means.

JP-A 63-16785 Japanese Patent Laid-Open No. 06-237463 Japanese Patent Application Laid-Open No. 06-331391 Japanese Patent Laid-Open No. 06-186061

  In a drive recorder, there is a case where image information captured by an imaging unit such as a camera and state information indicating the state of the vehicle are recorded on the recording unit in synchronization. However, when image information cannot be recorded for some reason, there is a problem that not only image information with a large data size but also state information with a small data size cannot be recorded.

  In a drive recorder, when predetermined recording conditions are satisfied, such as when an accident occurs, image information or the like is recorded on the recording means, and image information or the like is regularly recorded on the recording means (always recording). . Also, the drive recorder may acquire audio information when recording conditions are established and always record, and record the audio information together with the image information in a recording unit. However, there is a problem in that the recording capacity of the recording unit is compressed by recording unnecessary audio information.

Accordingly, an object of the present invention is to provide a drive recorder capable of appropriately setting various information that can be recorded in a recording unit such as a recording unit according to conditions.
It is another object of the present invention to provide a drive recorder capable of appropriately recording image information and status information on a recording unit such as a recording unit.
Furthermore, an object of the present invention is to provide a drive recorder capable of appropriately recording image information and audio information on recording means such as recording means.

  In the drive recorder according to the present invention, an image pickup unit that picks up image information, a state detection unit that detects state information indicating the state of the vehicle, and a control unit that controls the image information and the state information to be recorded in the recording unit. And the control unit is configured to be able to set whether to record the image information in the recording unit and to record the state information in the recording unit synchronously or asynchronously. To do.

  In the drive recorder according to the present invention, the recording of the image information in the recording means and the recording of the status information in the recording means can be executed asynchronously, so that when the image information cannot be recorded for some reason, In addition, it is possible to record the state information as a record, and it is possible to secure a room for investigating the cause of the actual accident at a later date.

  Further, in the drive recorder according to the present invention, it is possible to set whether or not to record audio information in the recording by the establishment of the recording condition and the continuous recording, respectively. It became possible to prevent the recording capacity from being pressed.

  Furthermore, in the drive recorder according to the present invention, since common reference information is added to each of the image information and the sound information, it is possible to reproduce the image information and the sound information in appropriate synchronization.

It is a figure which shows the example which mounts the drive recorder in the vehicle (truck). It is a perspective view of the main body of a drive recorder. It is a figure which shows the example of an external appearance of a reproducing | regenerating apparatus. It is a block diagram which shows the electric constitution of a drive recorder. It is a block diagram which shows the electric constitution of a reproducing | regenerating apparatus. It is a figure which shows the whole processing flow of a drive recorder. It is a figure which shows the usage example of the recording area of a memory card. It is a figure which shows the video image acquisition method. It is a figure which shows an example of the recording method to a memory card. It is a figure which shows an example of the formation method of a thumbnail image. It is a figure which shows an example of the reproducing method of image information. It is a figure which shows the outline of the change flow of setting conditions. It is a figure which shows the example of a screen for displaying image information. It is a figure (1) which shows the reproduction | regeneration method of image information and audio | voice information. It is FIG. (2) which shows the reproduction | regeneration method of image information and audio | voice information. It is a figure which shows the example which mounts the drive recorder in another vehicle (taxi).

  Hereinafter, embodiments for carrying out the present invention will be described in detail with reference to the drawings. It should be noted that the technical scope of the present invention is not limited to these embodiments, but extends to the invention described in the claims and equivalents thereof. In addition, various modifications and / or additions of changes can be made without departing from the spirit of the present invention.

  FIG. 1 is a diagram showing an example in which a drive recorder 2 is mounted on a vehicle (truck) 1.

  A drive recorder 2 is installed in the vehicle 1 and is connected to a first camera 3 that images the front of the vehicle 1, a second camera 4 that images the crew of the vehicle 1, and a third camera 5 that images the loading platform of the vehicle 1. Yes. Image information captured by the first camera 3 to the third camera 5 is cyclically recorded in the RAM 6 that is a semiconductor recording unit in the drive recorder 2. The drive recorder 2 is connected to a terminal 10 having an operation unit 12 including a display unit 11 and a plurality of buttons for performing various inputs.

  In the drive recorder 2, when predetermined recording conditions are satisfied, it is possible to record image information that is cyclically recorded in the RAM 6 on the memory card 7 (recording when the recording conditions are satisfied). Satisfaction of the predetermined recording condition means a case where an impact is applied to the vehicle 1 due to the occurrence of an accident or the like, and details of the recording due to the establishment of the recording condition will be described later. Further, the drive recorder 2 can record the image information recorded in the RAM 6 on the memory card 7 constantly (always recording). Details of the constant recording will be described later. Furthermore, in the drive recorder 2, it is possible to acquire the state information regarding the state of the vehicle including the speed information of the vehicle 1 in addition to the image information, and record it in the memory card 7 in association with the image information ( Recording of state information). Details of the recording of the status information will be described later. Further, the drive recorder 2 can record operation plan information and operation information such as loading and unloading input from the terminal 10 in the memory card 7 (recording of operation related information). Details of the operation-related information recording will be described later. Furthermore, the drive recorder 2 can also record audio information acquired by the microphone 26 in the memory card 7 (recording of audio information). Details of recording of audio information will be described later. Further, the drive recorder 2 can determine violation items used for eco / safety driving diagnosis and record the number of times for each item (recording violation item information). Details of recording the violation item information will be described later.

  In the drive recorder 2, with respect to recording due to establishment of recording conditions, continuous recording, status information recording, operation related information recording, audio information recording, and violation item information recording, It is possible to change the setting at the timing or during the initial setting or operation. Specific procedures for initial setting and setting change of the drive recorder 2 will be described later.

  FIG. 2 is a perspective view of the main body of the drive recorder 2.

  As shown in FIG. 2, a slot 24, a buzzer 26, a microphone 27, an LED 28, an I / F 29 for connecting to the terminal 10 in a line, a power switch 61, an opening / closing knob 70, etc. Has been placed.

  The microphone 27 collects sound in the vehicle 1. The buzzer 26 and the LED 27 have a function of notifying the user of the status of the drive recorder 2 by generating light emission, warning sound, or the like.

  After the memory card 7 is inserted into the slot 24, the open / close knob 70 is slid and positioned to protect the memory card 7 (state shown in FIG. 2). When removing the memory card 7, the open / close knob 70 is slid in the direction of arrow A. Further, the drive recorder 2 has an open / close sensor 52 that is linked to the open / close knob 70. When the open / close knob 70 is slid to the upper part of the memory card 7 (the state shown in FIG. 2), the drive recorder 2 is OFF indicating the closed state. A signal is output and an ON signal indicating an open state is output in a state where the memory card 7 can be extracted.

  FIG. 3 is a diagram illustrating an example of the appearance of the playback device.

  The playback device 400 is disposed in a center or the like that manages a plurality of vehicles 1 on which the drive recorder 2 is mounted, and transfers various types of information including image information recorded on the memory card 7 from the memory card 7 for storage. . The playback device 400 is configured by a personal computer or the like, and is configured to be able to display various information stored and information obtained from the various information. The operator of the playback apparatus 400 can perform vehicle operation management, traveling state, or investigation of the cause of an accident, etc. by verifying the displayed and reproduced image information and the like.

  FIG. 4 is a block diagram showing an electrical configuration of the drive recorder 2.

  The first camera 3, the second camera 4, and the third camera 5 are composed of a CCD image sensor (Charge Coupled Device Image Sensor) as a two-dimensional image sensor, and are used for general-purpose image signals of NTSC (National Television System Committee) standard. An image is captured at a frequency (59.94 Hz), and an analog video signal corresponding to the captured image is output. The first camera 3 images the front of the vehicle 1, the second camera 4 images the crew of the vehicle 1, and the third camera 5 is disposed to image the cargo bed.

  In the example of FIG. 4, three cameras are connected to the drive recorder 2. However, the present invention is not limited to this, and only one or two cameras may be connected to the drive recorder 2. The above cameras may be connected. In the example of FIG. 4, an NTSC standard camera composed of a CCD image sensor is used. However, a camera composed of a CMOS image sensor (Complementary Metal Oxide Semiconductor Image Sensor) or a PAL (Phase Alternating Line) standard is used. A camera that captures an image at a frequency for general-purpose image signals (50 Hz) may be used. Furthermore, a camera (described in detail later) for preventing the display color of the traffic light from becoming indistinguishable due to the relationship between the blinking cycle and the capture cycle of the traffic light when an LED traffic light is imaged is provided in the drive recorder 2. You may make it connect with.

  The memory card 7 is a recording means that is removable from the drive recorder 2 and is composed of an SD card (Secure Digital Memory Card) that is a programmable nonvolatile semiconductor memory card. The memory card 7 stores image information, status information, operation related information, audio information, and violation item information. Further, the memory card 7 includes various information such as a unique ID of the memory card 7, an ID or name of a user (for example, a truck crew member) who uses the memory card 7, a vehicle ID, and setting conditions described later. To be recorded.

  In the present embodiment, an SD card is used as removable recording means, but the present invention is not necessarily limited to this. Other removable memory cards (for example, a CF card (Compact Flash Card) or a memory) Sticks, etc.), removable hard disks, HDDs, various memories, etc. can also be used.

  The terminal 10 includes a display unit 11 constituted by a thin liquid crystal display and the like, an operation unit 12 constituted by various buttons for inputting operation information and the like, and a dedicated interface (I / F) of the drive recorder. ) Is connected to the drive recorder 2 via a line 29. In particular, when the drive recorder 2 is mounted in a taxi or the like, a shooting SW (switch) that outputs an operation signal when operated is connected to the drive recorder 2 via the I / F 29 instead of the terminal 10. You may make it connect (refer FIG. 15).

  A CPU (Central Processing Unit) 20 operates as a control device of the drive recorder 2 and is configured by a microcomputer or the like. The CPU 20 executes control of each element of the drive recorder 2 and the terminal 10, arithmetic processing, and the like based on a control program 41 described later.

  The video changeover switch (hereinafter referred to as “video SW”) 21 is a switch for switching video signals from the first camera 3 to the third camera 5. A video signal from one of the three cameras is selected by a selection signal from the CPU 20 and input to the image IC 22. A method for switching video signals from the first camera 3 to the third camera 5 will be described later.

  The image IC 22 is a JPEG-IC (Joint Photographic coding Experts Group-Integrated Circuit) that converts a video signal selected by the video SW 21 into a digital signal among the video signals output from the first camera 3 to the third camera 5. It is configured to create and output image information in JPEG format at 30 fps (30 frames per second).

  The RAM 6 functions as a semiconductor recording unit that cyclically records image information converted by the image IC 22 and state information corresponding to the image information. The RAM 6 is composed of an SDRAM (Synchronous Dynamic Random Access Memory), is connected to a DMA (Direct Memory Access) circuit in the CPU 20 and operates in synchronization with the clock of the CPU 20. Further, the RAM 6 has a capacity capable of cyclically recording image information and status information for at least 40 seconds.

  The slot 24 constitutes a slot for the memory card 7 provided in the drive recorder 2. The slot 24 transfers image information, status information, and the like that are cyclically recorded in the RAM 6 to the inserted memory card 7, and transfers various information stored in advance in the memory card 7 to the CPU 20.

  An RTC (Real Time Clock) 25 generates a signal corresponding to the current time and transmits it to the CPU 20.

  The microphone 26 is electrically connected to the CPU 20, and is configured to collect sound inside or outside the vehicle 1 to create sound data and transmit the sound data to the CPU 20. The audio data is converted into a digital signal by an analog / digital converter in the CPU 20, and recorded as audio information collected as one block every 100 ms. In order not to unnecessarily collect noise on the road, the microphone 26 is preferably a unidirectional microphone having high front sensitivity.

  The buzzer 27 is configured to generate a predetermined warning sound by the CPU 20 and notify the user of the occurrence of an abnormality when an abnormality occurs in the drive recorder 2 or the like.

  The LED 28 is lit while the drive recorder 2 is activated due to the supply of power from the CPU 20, and notifies the user that the drive recorder 2 is being activated. Further, when an abnormality occurs in the drive recorder 2, the CPU 20 performs predetermined blinking to notify the user of the occurrence of the abnormality.

  The I / F 29 includes a plug for connecting to the terminal 10 or an imaging SW (not shown).

  The drive frequency generating unit 30 includes a frequency switching unit 31, a first frequency transmitter 32, and a second frequency transmitter 33. The first frequency transmitter 32 outputs the first clock frequency of the general-purpose frequency (59.94 Hz) of the NTSC standard, and the first clock frequency output from the first frequency transmitter 32 by the frequency switching unit 31 to the image IC 22. When input, the image IC 22 operates based on the NTSC standard general-purpose frequency (59.94 Hz). The second frequency transmitter 33 outputs a second clock frequency (59.5 Hz) that is not affected by the blinking of the LED traffic light, and the second clock frequency output from the second frequency transmitter 32 by the frequency switching unit 31 is the same as the second clock frequency. When input to the image IC 22, the image IC 22 operates based on a clock frequency (59.5 Hz) that is not affected by the blinking LED traffic light. The first frequency transmitter 32 may output a PAL standard general-purpose frequency (50 Hz).

  The nonvolatile ROM 40 stores a control program 41 and the like for comprehensively controlling the hardware resources constituting the drive recorder 2. As the nonvolatile ROM 40, a mask ROM may be used. However, if a flash memory which is a programmable nonvolatile semiconductor memory, an EEPROM (Erasable Programmable Read Only Memory), a ferroelectric memory, or the like is used, a program can be written or erased. It becomes possible.

  The control program 41 is stored in the non-volatile ROM 40 and is read by the CPU 20 when the drive recorder 2 is activated, and functions as a program for controlling each part and for data calculation processing.

  The acceleration sensor 50 includes a so-called G sensor (Gravity Accelerative Sensor) that detects the magnitude of an impact applied to the vehicle 1 as a gravitational acceleration. The acceleration sensor 50 detects the magnitude of gravity acceleration according to three axes (x axis, y axis, and z axis) that are orthogonal to each other, and outputs the gravity acceleration information to the CPU 20. In addition, the acceleration sensor 50 may detect the magnitude of the gravitational acceleration corresponding to the two axes orthogonal to each other.

  A GPS (Global Positioning System) receiver 51 receives radio signals including satellite orbits from a plurality of GPS satellites and time data from atomic clocks mounted on the satellites, and the time difference between the received radio waves To obtain the current position information (latitude and longitude information) by calculating a relative distance difference from each satellite. The GPS receiver 51 can determine the position on a plane on the earth by capturing radio waves of at least three satellites. The GPS receiver 51 transmits GPS information including current position information and time information to the CPU 20.

  The open / close sensor 52 is configured to output an ON signal and an OFF signal to the CPU 20 in accordance with the movement of the open / close knob accompanying the insertion / removal of the memory card 7.

  The vehicle speed sensor 53 is configured by a magnetic sensor or an optical sensor that outputs the rotation of a rotor provided on the wheel shaft of the vehicle 1 as a rotation pulse signal. The CPU 20 calculates speed information of the vehicle 1 by calculating the number of wheel rotations per unit time from the pulse signal received from the vehicle speed sensor 53.

  The door opening / closing sensor 54 is a sensor provided on the door on the driver's seat side of the vehicle 1, and is configured to output an open signal or a close signal to the CPU 20 according to the opening / closing of the door on the driver's seat side. .

  The seat belt sensor 55 is a sensor provided in the seat belt of the seat on the driver's seat side of the vehicle 1, and outputs a mounting signal or a non-wearing signal to the CPU 20 according to the state of the seat belt of the seat on the driver's seat side. Is configured to do.

  The seating sensor 56 is a pressure sensor provided in the seat on the driver's seat side of the vehicle 1 and outputs a seating signal or a non-sitting signal to the CPU 20 according to the seating state of the driver on the seat on the driver's seat side. It is configured as follows.

  The accessory switch (ACC switch) 57 is electrically integrated with a key cylinder for engine start provided in the vehicle 1. When the ACC switch 57 is turned ON by the crew member's key operation, an ON signal is transmitted to the CPU 20 and the power supply circuit 60, and when the ACC switch 57 is turned OFF, an OFF signal is transmitted to the CPU 20. When receiving the ON signal, the drive recorder 2 is supplied with power from the power supply circuit 60 and starts control.

  The ignition switch (IG switch) 58 is electrically integrated with a key cylinder for engine start provided in the vehicle 1. The IG switch 58 transmits an ON / OFF signal to the CPU 20 in response to a user key operation.

  The power supply circuit 60 supplies power from the battery 62 to each part of the CPU 20 and the drive recorder 2.

  The power switch (power SW) 61 transmits a power-on signal to the CPU 20 and the power circuit 60 of the drive recorder 2 when the user performs a switch operation. This can be used when it is desired to operate the drive recorder 2 without turning on the ACC switch 57.

  The battery 62 is provided in the vehicle 1 and supplies power to the drive recorder 2 via the power supply circuit 60. The battery 62 may be any battery that can be installed in the vehicle 1 and can generate an electromotive force of 12V.

  The drive recorder 2 may be housed in the same housing as the first camera 3, the second camera 4, the third camera 5, and / or the terminal 10 as an apparatus dedicated to image recording, and may be configured integrally. The drive recorder 2 can also be configured as a function of the in-vehicle navigation device. The door opening / closing sensor 54, the seat belt sensor 55, and the seating sensor 56 are sensors for detecting arrival and departure of the vehicle 1, as will be described later, and therefore, not all sensors are necessarily connected to the drive recorder 2. May be. Further, it is not always necessary to connect the drive recorder 2 to both the ACC switch 57 and the IG switch 58.

  FIG. 5 is a block diagram showing an electrical configuration of the playback device 400.

  The CPU 401 operates as a control device of the playback device 400 and is configured by a microcomputer or the like. The CPU 401 executes display of recorded image information, calculation processing of various information, and the like by executing an application program.

  The ROM 402 stores a control program for comprehensively controlling the hardware resources constituting the playback device 400, and the RAM 403 stores image information, status information, operation related information, and audio information transferred from the memory card 7 by the CPU 401. It is used for temporarily storing data when processing violation item information and the like.

  The slot 404 is an insertion port of the memory card 7 provided in the playback device 400, and is connected to the memory card 7 to record image information, status information, operation related information, audio information, and violations recorded therein. Item information and the like are transferred to the playback device 400 side.

  The operation unit 405 includes a keyboard, a mouse, and the like, and is used as a means for performing an operation input to the CPU 401 when the operator operates the playback device 400. The display unit 406 includes a liquid crystal display device and the like, and is used to appropriately display image information, status information, operation related information, audio information, violation item information, and the like recorded in the memory card 7.

  The recording unit 407 includes an HDD (hard disk drive) or the like, and various application programs are installed in advance. The map information recording unit 408 is configured by recording means such as an HDD or a DVD, and stores map information including road information and speed limit information. The card information recording unit 409 is configured by an HDD or the like, and is used for recording image information, operation information, and the like recorded on the memory card 7. The recording unit 407, the map information recording unit 408, and the card information recording unit 409 may be configured as the same HDD.

  FIG. 6 is a diagram showing an overall processing flow of the drive recorder 2.

  The process flow shown in FIG. 6 is mainly executed by the CPU 20 of the drive recorder 2 in cooperation with each component of the drive recorder 2 according to the control program 41. It is assumed that the memory card 7 is inserted in the slot 24 of the drive recorder 2 and the rated voltage is supplied to the drive recorder 2 when the processing flow shown in FIG.

  When the ACC switch 57 (or IG switch 58) is turned on or the power switch 61 is turned on and the operation of the drive recorder 2 is instructed, the CPU 20 causes the first area 201 of the memory card 7 (see FIG. 7). ) Is initially set (S10), and the read setting conditions are recorded in a predetermined area (such as an internal memory of the CPU) in the drive recorder 2, and according to the setting contents, Perform the action.

  Next, the CPU 20 cyclically records image information and the like captured by the first camera 3 to the third camera 5 in the RAM 6 (S11).

  Next, the CPU 20 determines whether or not the recording condition is satisfied (S12). The case where the recording condition is satisfied means the following three cases. Note that when the recording condition is satisfied, one or two of them may be used instead of all of the following three, and other conditions other than the following three may be set.

    1. G detection: A case where the acceleration sensor 50 detects a gravitational acceleration of 0.40 G or more. The reason why the recording condition is satisfied is that when such a gravitational acceleration is applied to the vehicle 1, it can be recognized that an accident has occurred or that the accident has been imminent. The set value (0.40G) is an example, and other values can be adopted, and are included in the set conditions read in S10.

    2. Speed trigger: A case where the speed difference within a predetermined period of the vehicle 1 detected from the vehicle speed sensor 53 is equal to or greater than a threshold value. Specifically, when traveling at 60 km / h or more and the deceleration for one second becomes 14 km / h or more, it is determined that the recording condition is satisfied. The reason why the recording condition is satisfied is that when the vehicle 1 undergoes such a speed change, it can be recognized that an accident has occurred or that the accident has been imminent. Note that the above set value (deceleration for one second during traveling at 60 km / h or more, 14 km / h or more) is an example, and other values can be adopted and read in S10. It is included in the setting conditions.

    3. Imaging SW: A case where a predetermined button (imaging button; not shown) included in the operation unit 12 of the terminal 10 is operated. Image information and the like can be recorded according to instructions from the crew.

  If it is determined in S12 that the recording condition is satisfied, the CPU 20 corresponds to, for example, image information for a total of 20 seconds, 12 seconds before the recording condition is satisfied and 8 seconds after the recording condition is satisfied, and the image information. The status information to be recorded is recorded in the memory card 7 as one folder (S15). Note that the period recorded when the recording condition is satisfied (a total of 20 seconds including 12 seconds before the recording condition is satisfied and 8 seconds after the recording condition is satisfied) is an example, and another period may be selected. Is possible. Further, when the recording condition is satisfied, the drive recorder 2 includes, for example, audio information for a total of 20 seconds, 12 seconds before the recording condition is satisfied and 8 seconds after the recording condition is satisfied, together with the above-described image information. You may make it record on the memory card 7 as one folder.

  State information refers to the following information.

    1. Gravity acceleration information (G value) detected by the acceleration sensor 50.

    2. Current position information (latitude and longitude information) and current time information of the vehicle 1 detected from the GPS receiver 51.

    3. Speed information of the vehicle 1 detected from the vehicle speed sensor 53.

    4). ON / OFF information of the ACC switch 57. Instead of the information from the ACC switch 57, ON / OFF information of the IG switch 58 may be employed.

    5. ID information of the imaged camera.

  Note that the content of the state information is not necessarily limited to the above information, such as information on the engine rotation status, information on the accelerator opening, information on the cumulative travel distance since the drive recorder 2 was mounted, etc. Other information may be included.

  If it is determined in S12 that the recording condition is not satisfied, the CPU 20 determines whether the constant recording is set in the setting condition read in S10 (S13).

  If it is determined in S13 that continuous recording has been set, the CPU 20 performs continuous recording (S14). In the continuous recording, regardless of the establishment of the recording condition, a predetermined number of pieces of image information (for example, one piece per minute) and state information corresponding to the image information are recorded in the memory card 7 at predetermined intervals.

  Next, the CPU 20 determines whether or not the mode has been changed to the setting condition change mode (S16). If it is determined that the mode has been changed to the setting condition change mode, the setting condition change process (S17) and The changed setting condition is stored (S18).

  In the storage process (S18), the CPU 20 records the changed setting conditions in the first area 201 of the memory card 7 and a predetermined area in the drive recorder 2 (such as the internal memory of the CPU), and then changes. Various operations of the drive recorder 2 are executed based on the set conditions.

  Further, the CPU 20 separately records the setting condition immediately before the change in the first area 201 of the memory card 7 in the storage process (S18). With this process, the drive recorder 2 can refer to the past setting conditions later, and even if the setting conditions are changed in the middle, under what setting conditions the image information before the change is made, etc. It became possible to grasp clearly what was recorded in. As a result, it is possible to accumulate in a complete form know-how for determining under what setting conditions image information and the like are recorded most efficiently and usefully.

  Next, the CPU 20 determines whether or not an end signal based on the OFF signal of the ACC switch 57 or the OFF signal of the power switch 61 has been received (S20). When the end signal is received, the series of processing ends. To do. If the end signal has not been received, S12 to S20 are repeatedly executed.

  As described above, the drive recorder 2 cyclically records image information, status information, and the like in the RAM 6 while predetermining a predetermined image when the recording condition is satisfied and when recording is always performed (the recording may not always be performed). Information, status information, and the like are recorded in a predetermined area of the memory card 7. Further, as will be described later, the drive recorder 2 can record predetermined information in a predetermined area of the memory card 7 even when a condition for determining violation items used for eco / safety driving diagnosis is satisfied. is there. Further, the drive recorder 2 can record operation information in a predetermined area of the memory card 7 as will be described later.

  FIG. 7 is a diagram illustrating a usage example of the recording area of the memory card 7.

  The recording area 200 of the memory card 7 includes a first area 201 in which various information such as a crew member's name and setting conditions are recorded, and a second area in which image information and state information are recorded when the recording conditions are satisfied. 202, a third area 203 in which image information and state information by continuous recording are recorded, and a fourth area 204 in which operation-related information and violation item information are recorded are allocated.

  When the drive recorder 2 is attached to all the vehicles in order to manage and manage a plurality of trucks in a shipping company or the like, the recording conditions are established in the second area 202 in consideration of the truck operating conditions. In this case, it is preferable that the image information and the status information have a recording capacity capable of recording at least 15 events, and the third area 203 has a recording capacity capable of recording the image information and the status information by continuous recording for at least 8 hours. It is preferable to have.

  FIG. 8 is a diagram illustrating a video image acquisition method. FIG. 8A, FIG. 8B, and FIG. 8C each show an example of an image acquisition method from three cameras.

  In FIG. 8A, an image from the first camera 3 is acquired at time T0, an image from the second camera 4 is acquired at time T1, an image from the first camera 3 is acquired at time T2, and the time At T3, an image from the third camera is acquired, and thereafter, an image from each camera is repeatedly acquired in the same order. Switching of the video image is performed by the video SW 21 according to a control signal from the CPU 20. As will be described later, since the image IC 22 outputs still image information at a rate of 30 frames per second (30 fps), the video SW 21 may be switched at 1/30 second intervals accordingly. In continuous recording, images from each camera may be repeatedly acquired at intervals of 1 minute in the order shown in FIG.

  In FIG. 8B, an image from the first camera 3 is acquired at time T0, an image from the second camera 4 is acquired at time T1, an image from the third camera 5 is acquired at time T2, and the time At T3, an image from the first camera is acquired, and thereafter, an image from each camera is repeatedly acquired in the same order. Switching of the video image is performed by the video SW 21 according to a control signal from the CPU 20. As will be described later, since the image IC 22 outputs still image information at a rate of 30 frames per second (30 fps), the video SW 21 may be switched at 1/30 second intervals accordingly. In continuous recording, images from each camera may be repeatedly acquired at 1 minute intervals in the order shown in FIG.

  In FIG. 8C, the order in which video images are acquired from each camera is the same as that in FIG. 8B, but the intervals are changed. That is, the interval from time T0 to time T2 is 1/30 second interval, and the interval between time T2 to time T3 and time T3 to time T4 is 1 minute interval.

  As described above, it is possible to appropriately acquire video images from the three cameras by switching the video SW 21 at a predetermined timing by a control signal from the CPU 20. In the three examples described above, the ratio of acquiring video images from the first camera 3 that captures the front front of the vehicle 1 is set to be large (so that the amount of information increases). An appropriate ratio can be determined by setting conditions according to the position and number. In any of the photographing methods, the first camera 3 is preferentially recorded as compared with other cameras, because the first camera 3 is a camera that reflects the front of the vehicle and is more important than the other cameras. is there.

  FIG. 9 is a diagram illustrating an example of a recording method on the memory card.

  The image IC 22 outputs image information to the RAM 6 at 640 × 480 pixels and 30 frames / second based on the video image switched by the video SW 21, and the RAM 6 receives the image information for 40 seconds input from the image IC 22. It is stored cyclically. For example, when the video SW 21 is switched in the order of FIG. 8A, the image information of the first camera 3 → the image information of the second camera 4 → the image information of the first camera 3 → the image information of the third camera 5 → The image information is output to the RAM 6 in the order of the image information of the first camera 3. The RAM 6 is also set so that status information corresponding to each image information is also recorded. When the recording condition is satisfied and when the recording is always performed, the image information and the status information are output from the RAM 6 to the memory card 7 and recorded at a predetermined timing. Further, depending on the setting conditions, the audio information acquired by the microphone 26 may be stored cyclically in the RAM 6 and recorded in the memory card 7 at a predetermined timing.

  FIG. 9 shows an example of recording on the memory card 7 from time T10 to time T14, and it is assumed that the recording condition is satisfied at time T12.

  When the recording condition is satisfied at time T12, for example, among the image information recorded in the RAM 6 in a circular manner, the CPU 20 starts from 12 seconds before the recording condition is satisfied (time T11) to 8 seconds after the recording condition is satisfied (time The image information and status information for 20 seconds until T13) are output to the slot 24. As a result, 30 × 20 = 600 frames of still image information from time T11 to time T13 is recorded in the second area 101 of the memory card 7 as one file.

  In the continuous recording, for example, the CPU 20 outputs one piece of image information and status information corresponding to the image information among the image information and the like that are cyclically recorded in the RAM 6 to the slot 24 every second. As a result, the still image information at time T10 to time T14 is recorded in the third area 203 of the memory card 7.

  Note that voice recording can be performed even in the case of continuous recording. In that case, when acquiring image information at a predetermined timing and a predetermined frame rate, audio information for each predetermined period (for example, audio information for every 10 seconds when acquiring one piece of image information per minute) To get and record.

  As described above, the drive recorder 2 can record information for steady recording on the memory card 7 for a long time, and also provides detailed and clear information to the memory card 7 in an important period where there is a possibility of a serious accident or the like. It became possible to record. Note that the frame rate and the recording time when the above-described recording condition is satisfied and when recording is always performed are merely examples, and the present invention is not limited to these, and various conditions can be set by changing the setting conditions.

  By the way, in the example of FIG. 9, at time T11 to T13, the recording by the establishment of the recording condition and the recording by the constant recording are overlapped. Therefore, in order to efficiently use the recording capacity of the memory card 7, it is preferable that the recording is not always performed at times T11 to T13, particularly at times T12 to T13 after the recording condition is satisfied.

  In the above-described example, it is set so that the image information and the status information are acquired and recorded in the memory card 7 in synchronization in the recording by the establishment of the recording condition and the continuous recording. However, if the acquisition speed of image information is faster than the writing speed to the memory card 7 or the allocated area of the memory card 7 is full, the image information and the status information are synchronized. In some cases, it could not be recorded. However, even in such a state, in fact, only state information with a small capacity may be recorded on the memory card 7. Therefore, the image information and the status information may be set to be recorded on the memory card 7 at different timings (asynchronous). As described above, when the image information and the state information are set to be recorded at different timings, only the state information may be recorded without losing all the information. It becomes possible to grasp and guess later whether or not a situation has occurred using the state information. Note that it is preferable that whether image information and state information are recorded on the memory card 7 synchronously or at different timings (asynchronous) can be set according to setting conditions described later.

  FIG. 10 is a diagram illustrating a method for forming thumbnail images.

  FIG. 10A shows the image information that is cyclically recorded in the RAM 6, as in FIG. The still image information for 600 sheets (30 fps × 20 s) for 20 seconds until time T13 corresponding to 8 seconds after the establishment of is shown. Although not explicitly shown in FIG. 10A, each piece of still image information is stored in the order described in FIG. 8A (first → second → first → third → first →... ), Still image information corresponding to video images captured by the first camera 3 to the third camera 5 is recorded in order.

  As described above, when any one of the three recording conditions is satisfied, the CPU 20 performs 20 seconds from time T11 corresponding to 12 seconds before the recording condition is satisfied to time T13 corresponding to 8 seconds after the recording condition is satisfied. , The still image information for 600 sheets (30 fps × 20 s) is collected as one folder and recorded on the memory card 7 (see S15 in FIG. 6).

  Further, as will be described later, when the playback apparatus 400 plays back image information that satisfies the recording conditions, a thumbnail based on a representative image is used to distinguish a specific image from many recorded images. An image (an image obtained by reducing the image) is created and displayed, and may be used as an index for each recorded image. Needless to say, image information at the time when the recording condition is satisfied is preferable as a representative image.

  However, as shown in FIG. 10C, since the image information at the time when the recording condition is satisfied is in the substantially central portion of the folder, the playback device 400 searches the image information at the time when the recording condition is satisfied. There is a problem that a lot of processing time is required to form thumbnail images corresponding to many recorded images.

  Therefore, in the drive recorder 2, as shown in FIG. 10B, when the CPU 20 forms a folder on the memory card 7, the still image information 210 at the time when the recording condition is satisfied is specified and used for the thumbnail image. The still image information 210 is set to be copied immediately after the folder header 212. Therefore, in the playback apparatus 400, when creating a thumbnail image as an index of the Nth folder, it is sufficient to use still image information immediately after the header 212, and the search time shown in FIG. 10C is not required. There is an advantage (see FIG. 27). The header 212 records data such as the ID of the vehicle on which the drive recorder 2 is mounted, the driver's ID, the date and time when the recording condition is satisfied, and the type of recording condition that is satisfied.

  Instead of automatically selecting still image information at the time when the recording condition is satisfied as still image information for the thumbnail image, the image is captured by a specific camera (for example, the first camera 3) immediately after the recording condition is satisfied. More preferably, still image information based on video images is always selected. This is because when still image information captured by a plurality of cameras is alternately recorded, it is more useful as an index that the thumbnail image is always the still image information captured by a specific camera.

  Note that the thumbnail image can be used not only when the recorded image is reproduced in the reproduction apparatus 400 but also as an index when the recorded image is reproduced in the display unit 11 of the terminal 10.

  FIG. 11 is a diagram illustrating an example of a method for reproducing image information.

  FIG. 11A is a diagram showing an example of the Nth folder including still image information recorded on the memory card 7 according to the order of FIG. 8A when the recording condition is satisfied. As described with reference to FIG. 10B, the still image information 211 for the thumbnail image is copied to the Nth folder immediately after the header 212, and then the total captured by the first camera 3 to the third camera 5 600 pieces of still image information are included in order along the direction of arrow A.

  As described above, since the image information captured by the three cameras is alternately included, when the image information is reproduced as it is, a plurality of viewpoints are switched at an early timing, and the moving image becomes very difficult for the crew to view. Therefore, in particular, when playing back on the display unit 11 of the terminal 10, it is preferable to perform control so that only still images captured by a predetermined camera are played back continuously.

  FIG. 11B is a diagram showing a case in which still image information captured by the second camera 4 among the still image information recorded alternately is reproduced in order along the direction of the arrow B. . The CPU 20 identifies the camera on which the still image information is captured based on the state information recorded corresponding to each still image information, and corresponds to a preset camera (for example, the second camera 4). Control is performed so that only the still image information is selected and reproduced on the display unit 11. A camera that captures image information to be reproduced is set in advance by a method described later. By such control, image information captured by a plurality of cameras can be recorded alternately and can be easily reproduced by the crew.

  In the playback device 400, when playing back, as will be described later, it is possible to form a plurality of screens on one screen and play back moving images captured by three cameras at once (see FIG. 26). ).

  Hereinafter, setting of setting conditions (operation conditions of the drive recorder 2) and changing of the settings will be described.

  The setting conditions described later are recorded in the first area 201 of the memory card 7 at the same time when the operation plan information described later is recorded in the memory card 7 (see processing flow S102 in FIG. 18). In this case, the setting condition to be recorded is determined in advance by the operation manager side of the playback device 400. However, when it is desired to change the preset setting conditions, the setting conditions can be changed using the operation unit 12 of the terminal 10 connected to the drive recorder 2 in accordance with a setting condition changing flow described later.

  In addition, a plurality of setting conditions are recorded in the memory card 7 in advance, and after inserting the memory card 7 into the drive recorder 2, one of the setting conditions is selected using the operation unit 12 of the terminal 10. You may do it. For example, it is possible to set a plurality of setting conditions in advance such that the setting condition A is for a large truck, the setting condition B is for a light truck, and the setting condition C is for a taxi. The means for selecting the setting condition is not limited to the operation unit 12 of the terminal 10, and other operation means such as a photographing SW may be used.

  Furthermore, the correspondence relationship between the crew ID or vehicle ID and the setting condition is recorded in advance in the memory card 7, and after inserting the memory card 7 into the drive recorder 2, the crew member ID or When the vehicle ID is input, the CPU 20 may be set to automatically select a setting condition corresponding to the input crew ID or vehicle ID.

  FIG. 12 is a diagram showing an outline of a setting condition changing flow.

  The process flow shown in FIG. 12 shows the details of S17 and S18 of FIG. 6, and is mainly executed by the CPU 20 of the drive recorder 2 using the terminal 10 in accordance with the control program 41. It is assumed that the memory card 7 is inserted in the slot 24 of the drive recorder 2 and the rated voltage is supplied to the drive recorder 2 when the processing flow shown in FIG.

  First, when a predetermined operation is performed on the operation unit 12 of the terminal 10 to enter the maintenance mode, the setting mode (S30) for changing a preset setting condition and the preset setting condition are browsed. The inspection mode (S31) can be selected.

  In the setting mode (S31), when the setting conditions are actually changed, the vehicle number or crew ID of the vehicle 1 is input as a password, and matches the vehicle ID or crew ID of the vehicle 1 recorded in advance. It is preferable that the setting condition can be changed only in the case.

  When the setting mode (S31) is entered, as shown in FIG. 12, it is possible to change the settings for 10 items from “basic item (S40)” to “voice recording item (S49)”. The “basic item (S40)”, “image recording item (S45)”, and “always recording item (S46)” further have a plurality of fine setting items. The crew member operates the operation unit 12 of the terminal 10 to select an item whose condition setting is to be changed, and changes the specific condition setting. Each item will be described below. Note that the transition to the maintenance mode and the operation in the mode are not limited to the operation by the operation unit 12 of the terminal 10.

1. When “Basic Item (S40)” is selected, “Date / Time Setting Item (S60)”, “Equipment Installation Direction Item (S61)”, and “Camera Connection Number Item (S62)” are further selected. It is possible.

  When a date / time setting item is selected, settings such as date / time and vehicle number can be changed. When the device installation direction item is selected, the setting of the installation direction of the main body of the drive recorder 2 can be changed. The installation direction of the main body of the drive recorder 2 is set because which of the three axes of the built-in acceleration sensor 50 corresponds to the longitudinal direction of the vehicle 1 and which axis corresponds to the lateral direction of the vehicle 1. It is for determining. When the number of cameras connected item is selected, settings such as the number of cameras connected to the drive recorder 2 and the above-mentioned camera standards (selection of dedicated cameras having capture frequencies not affected by blinking / NTSC standard cameras), etc. It is possible to change.

2. “Buzzer guidance item (S41)” When the buzzer guidance item is selected, settings such as the volume level of the buzzer 27, the level of the buzzer 27, and the presence / absence of a buzzer sound when the recording conditions are met are set. It is possible to change.

3. About “Vehicle Speed Item (S42)” When the vehicle speed item is selected, it is possible to change settings such as the system of pulses output from the vehicle speed sensor 53 connected to the drive recorder 2 and the type of the vehicle speed sensor. is there.

4). About “Dangerous Driving Item (S43)” When a dangerous driving item is selected, it is possible to change the setting of the judgment condition of the violation item used for the eco / safety driving diagnosis. Below, 6 example violation items used for eco-safe driving diagnosis will be described. However, the six violation items used for the eco-safety driving diagnosis shown below are examples, and other items can be adopted.

    B) Excessive speed: When the vehicle 1 is driven at a speed higher than a predetermined speed (for example, 80 km / h at the initial setting) on a general road for a predetermined time (for example, initial setting, 10 seconds) or more, and at a predetermined speed ( For example, the initial setting is a case where the vehicle is driven at a speed higher than 100 km / h) for a predetermined time (for example, initial setting, 10 seconds) or more. When the above condition is satisfied, the CPU 20 records the occurrence of “overspeed” in the first area 201 of the memory card 7. If the above speed excess condition is satisfied a plurality of times while the vehicle 1 is traveling, the number of satisfied conditions is also recorded in the memory card 7.

    (B) Rapid acceleration: A case where the speed increases for a predetermined time (for example, the initial setting is 1 second) or more by a predetermined increase value (for example, the initial setting is 13 km / h). When the above condition is satisfied, the CPU 20 records that the “rapid acceleration” has occurred in the first area 201 of the memory card 7. In addition, when the conditions for the rapid acceleration are satisfied a plurality of times while the vehicle 1 is traveling, the number of satisfied conditions is also recorded in the memory card 7. A determination acceleration value (for example, 0.3 G or more) can be determined together with the predetermined time and the predetermined increase value.

    (C) Rapid deceleration: A case where the speed is reduced by a predetermined decrease value (for example, the initial setting is 13 km / h) or more during a predetermined time (for example, the initial setting is 1 second). When the above condition is satisfied, the CPU 20 records that “rapid deceleration” has occurred in the first area 201 of the memory card 7. In addition, when the above-mentioned rapid deceleration condition is satisfied a plurality of times while the vehicle 1 is traveling, the number of satisfied times is also recorded in the memory card 7. A determination acceleration value (for example, 0.3 G or more) can be determined together with the predetermined time and the predetermined decrease value.

    D Steep steering: A case where the gravitational acceleration in the left-right direction of the vehicle 1 is equal to or greater than a predetermined detection value (for example, the initial setting is 0.45 G) for a predetermined time (for example, the initial setting is 500 milliseconds). When the above condition is satisfied, the CPU 20 records the occurrence of the “steep handle” in the first area 201 of the memory card 7. In addition, when the condition of the sudden handle is satisfied a plurality of times while the vehicle 1 is traveling, the number of satisfied conditions is also recorded in the memory card 7.

    Wheeling: A case where the output of the ACC switch 57 (or the IG switch 58) is ON and the speed of 0 km / h continues for a predetermined time (for example, the initial setting is 5 minutes) or more. When the above condition is satisfied, the CPU 20 records the occurrence of “idling” in the first area 201 of the memory card 7. Note that if the idling condition is satisfied a plurality of times while the vehicle 1 is traveling, the number of established conditions is also recorded in the memory card 7.

    F Long-time operation: A case where the output of the ACC switch 57 (or IG switch 58) has not been turned OFF for a predetermined time (for example, the initial setting is 2 hours) or longer. When the above condition is satisfied, the CPU 20 records that the “long-time operation” has occurred in the first area 201 of the memory card 7. In addition, when the long-time driving condition is satisfied a plurality of times while the vehicle 1 is traveling, the number of satisfied times is also recorded in the memory card 7.

5). Regarding “Recording Condition Item (S44)” When the recording condition item is selected, the G detection (for example, the initial setting is 0.40 G or more is 100 milliseconds or more) and the speed among the above-mentioned three recording conditions. It is possible to change the setting of a trigger (for example, the initial setting is a deceleration of 1 km or more during traveling at 60 km / h or more). Of the three recording conditions described above, the other one is only the ON / OFF of the imaging SW. Therefore, the setting cannot be changed in this example. However, the setting can be changed using this item. It may be configured as possible. Furthermore, when other conditions other than the three recording conditions described above are set, it is preferable that the setting can be changed using this item.

6). When “Image Recording Item (S45)” is selected, “Frame Rate Item (S70)”, “Recording Number Item (S71)”, and “Recording Time Item (S72)” are further selected. It is possible.

  When the frame rate item is selected, the output setting (for example, the initial setting is shown in FIG. 8A) of each camera (the first camera 3 to the third camera 5 in this example) connected to the drive recorder 2. In the order shown, it is possible to change 30 × 2/4 fps for the first camera 3, 30/4 fps for the second camera 4, and 30/4 fps for the third camera 5. When the recording count item is selected, the setting of the number of folders to be recorded in the second area 202 of the memory card 7 (for example, the initial setting is 15) can be changed when the recording condition is satisfied. is there. When the recording time item is selected, the recording time to be recorded when the recording condition is satisfied (for example, the initial setting is 20 seconds in total from 12 seconds before the recording condition is satisfied to 8 seconds after the recording condition is satisfied). It is possible to change the setting.

7). Regarding “always recording item (S46)” When the always recording item is selected, “always recording / non-recording item (S80)”, “always recording camera item (S81)”, “frame rate item (S82)” ) ”,“ Always recording upper limit item (S83) ”, and“ voice recording item (S84) ”.

  When the item with / without constant recording is selected, it is possible to change the setting for whether or not to perform constant recording (see S13 in FIG. 6) (for example, the initial setting is with constant recording). . When the constantly recording camera item is selected, it is possible to change the setting of the camera that captures image information to be recorded constantly (for example, the initial setting is the first camera 3). If the frame rate item is selected, it is possible to change the setting of the frame rate (for example, the initial setting is 1 fpm: 1 frame per minute) for continuous recording. When the always recording upper limit item is selected, the setting of the upper limit (for example, the initial setting is 512 MB) of the capacity of the third area 203 of the memory card 7 that always records can be changed. If a voice recording item is selected, it is possible to change the setting of whether or not voice recording is being performed at all times (for example, the initial setting is no voice recording).

8). Regarding “Video Output Item (S47)” When the video output item is selected, when the image information recorded on the display unit 11 of the terminal 10 is reproduced, the camera that captures the image information to be reproduced (see FIG. 11). (For example, the initial setting is the first camera 3) can be changed.

9. “SW Item (S48)” When the SW item is selected, what happens when the imaging SW (imaging SW included in the operation unit 12 of the terminal 10) is pressed as one of the conditions for establishing the recording condition? It is possible to change the setting for recording various information (for example, the initial setting is image information + audio information) and the number of recordings (for example, the initial setting is 5 times).

10. “Voice recording item (S49)” When voice recording is set when the imaging SW as one of the conditions for establishing the recording condition is pressed (see “SW item (S48)”), once It is possible to change the setting of the recording time of voice recording by pressing (for example, the initial setting is 10 minutes).

  When the change of the setting item described above is completed, the process proceeds to the storage mode (S90), and whether the changed setting is to be stored (S91) or not to be stored (S92) is selected, and the setting mode 30 is ended. Note that the storage mode (S90) corresponds to S18 in FIG. 6, and changes in the settings are saved (S91), and thereafter, various functions of the drive recorder 2 are executed under the changed conditions. Further, the conditions before the setting change are also recorded, and not only the latest setting conditions but also the previous setting conditions are recorded in the memory card 7.

  As described above, since the setting condition of the drive recorder 2 can be changed, the setting can be adjusted individually after the drive recorder 2 is attached to the vehicle, so that the number of work steps at the time of attachment can be reduced. became. Further, since the setting conditions (initially set conditions and setting conditions changed thereafter) are recorded in the memory card 7, image information and the like recorded by inserting the memory card 7 into the playback device 400 are stored. When moving from the memory card 7 to the playback device 400, it is possible to copy the setting conditions relating to a predetermined vehicle recorded on the memory card 7 to the playback device 400. As a result, the reproducing apparatus 400 can record the copied setting conditions in the memory card 7 used for another vehicle, and reflect the same setting conditions to the other vehicle. Furthermore, the memory card 7 in which the setting conditions (initially set conditions and subsequently changed setting conditions) are recorded is directly inserted into the drive recorder of another vehicle, and the setting conditions recorded in the memory card 7 Thus, it is possible to control the drive recorder. Accordingly, it is possible to easily reflect the same setting condition on other vehicles without using the playback device 400.

  In the above-described example, the drive recorder 2 is configured such that the set condition can be changed for each item using the operation unit 12 of the terminal 10. However, a plurality of patterns (A pattern (for truck), B pattern (for taxi), C pattern (for delivery), etc.) are prepared in advance for each type, function or application of the vehicle, and the setting conditions are collectively set. You may comprise so that it may change.

  In addition, as described above, it is set whether to record the image information and the state information on the memory card 7 in synchronization or at different timings in the recording when the recording condition is satisfied and the continuous recording. It is also possible to determine by conditions.

  FIG. 13 is a diagram illustrating an example of a screen for displaying image information.

  By performing a predetermined operation, it is possible to display a screen example 560 as shown in FIG.

  A screen example 560 shown in FIG. 13 includes a crew member name 561, a vehicle ID 562, an information display area 563 regarding the established recording conditions, a state information display area 570, a first display area 571 for image information, and a second display area 572 for image information. , A third display area 573 for image information, a route display area 580 for which recording conditions are satisfied, a screen switching button 581, a screen control button 582, and a button 583 for transitioning to the previous screen.

  In the information display area 563 regarding the established recording condition, the established recording condition is “speed trigger”, the date and time when the recording condition is established, and the condition of “speed trigger” are displayed.

  Since the screen example 560 can be displayed on a relatively large screen of the display unit 406 of the playback device 400, three display areas 571 to 573 are displayed so that images captured by the first camera 3 to the third camera 5 can be displayed at a time. have. Recognize the difference from the display on the display unit 11 of the terminal 10 described with reference to FIG. The contents displayed in the first display area 571, the second display area 572, and the third display area 573 are set so as to be switched in the order of the arrows shown in the display area 571 by the operation of the screen switching button 581. . That is, in the screen example 560, image information captured by the first camera 3 in the first display area 571, image information captured by the second camera 4 in the second display area 572, and the third camera 5 in the third display area 573. The captured image information is displayed. Therefore, once the screen switching button 581 is operated, the image information captured by the third camera 5 in the first display area 571, the image information captured by the first camera 3 in the second display area 572, and the third display area 573 are displayed. It switches so that the image information imaged with the 2nd camera 4 may be displayed, respectively.

  In the status information indication area 570, status information recorded corresponding to the image information displayed in the first display area 571 is displayed. For example, when the image information is displayed in the first display area 571 at 30 × 2/4 fps while being switched, the state information is displayed so as to be switched accordingly.

  The route display area 580 where the recording condition is satisfied indicates that the portion where the recording condition is satisfied is a travel section between “XX office” and “XX corporation”.

  FIG. 14 is a diagram (1) illustrating a method for reproducing image information and audio information.

  Although FIG. 13 shows an example of a method for reproducing image information, a method for reproducing image information and audio information when image information and audio information are recorded in the drive recorder 2 will be described below. The Nth folder shown in FIG. 14 is acquired with the microphone 26 and the image information captured by the first camera 3 to the third camera 5 according to the order of FIG. 8A according to the setting conditions when the recording condition is satisfied. An example of data contents when audio information is collectively recorded in the Nth folder is shown. The Nth folder includes a header 600, thumbnail image information 601, a plurality of image information, and a plurality of audio information. Image information 1-1, 1-2, etc. indicate image information captured by the first camera 3, image information 2-1, 2-2, etc. indicate image information captured by the second camera 4, and image information Reference numerals 3-1 and 3-2 indicate image information captured by the third camera 5. In this example, since the image information is recorded at 30 fps as a whole and the sound information is set to be recorded in units of 100 ms, one sound information is recorded for three pieces of image information. However, this is only an example, and other methods may be adopted.

  Each piece of image information is recorded in a format called frame information 610, detailed information 611, and actual data 612. The frame information 610 includes information for distinguishing between image / sound and information indicating which image information is captured by any of the first camera 3 to the third camera 5. The detailed information 611 includes time information (elapsed time information since the start of the drive recorder 2) when the image information was captured. The actual data 612 includes image data.

  Each piece of audio information is recorded in the format of frame information 620, detailed information 621, and actual data 622. The frame information 620 includes information for distinguishing image / sound. The detailed information 621 includes time information when the recording of the audio information is started (elapsed time information since the drive recorder 2 was started at that time). The actual data 622 includes audio data. The time information may be time information at which recording of 100 ms of audio information of one block is completed (elapsed time information since the start of the drive recorder 2 at that time).

  In addition, as described above, the image information and the sound information are not in a general format (for example, “wav” format), but are in an original format, so that it is possible to provide an environment that is difficult to forge. There is also.

  For example, when displaying the image information 1-1, 1-2, 1-3, etc. captured by the first camera 3 in the first display area 571 of FIG. 13, the first camera 3 is based on the frame information 610. What is necessary is just to display continuously the image information imaged in (1). As described above, the frame rate when only the image information captured by the first camera 3 is considered is 30 × 2/4 fps. Therefore, the playback apparatus 400 synchronizes with the audio information to be played back so as to match the frame rate of the image information captured by the first camera 3. The synchronization between the image information and the audio information can be based on the elapsed time information (reference information) from the start of the drive recorder 2 included in the detailed information. With such a configuration, it is possible to output audio information synchronized with image information reproduced by the reproduction apparatus 400 from a speaker (not shown) connected to the reproduction apparatus 400.

  FIG. 15 is a diagram (2) illustrating a method for reproducing image information and audio information.

  As shown in FIG. 14, the audio information is output in synchronism with the image information based on the elapsed time information from the start of the drive recorder 2 in which the audio information is recorded. However, since the audio information is recorded in units of 100 ms for each block, there may be a case where the elapsed time information of the audio information is not connected well and continuously.

  FIG. 15A shows a state in which the elapsed time information of the audio information is well connected every 100 ms. For example, the elapsed time information (Tn) of the Nth audio information 630, the elapsed time information (Tn + 1) of the N + 1th audio information 631, and the elapsed time information (Tn + 2) of the N + 2th audio information 632 are exactly 100 ms. In some cases, as shown in FIG. 15A, the actual data of the music information 630, 631 and 632 may be output continuously.

  FIG. 15B shows a state in which there is audio information 630 corresponding to the elapsed time information (Tn) and audio information 632 corresponding to the elapsed time information (Tn + 2), but audio information that should be in between is missing. Is shown. In such a case, it is preferable that the playback apparatus 400 performs silent playback by setting the sound level during this period to 0 in order to prevent noise generation.

  FIG. 15 (c) shows that the elapsed time information (Tn) and the elapsed time information (Tn + 1) do not exist at an interval of exactly 100 ms, and the Nth time is considered from the elapsed time information (Tn) and the elapsed time information (Tn + 1). This shows a case where the audio information 630 and a part of the (N + 1) th audio information 650 overlap each other.

  In the case of FIG. 15 (c), FIG. 15 (d) gives priority to the subsequent N + 1th audio information 650, and deletes two audios by deleting a part of the previous Nth audio information 630. It shows a method of connecting information. Further, FIG. 15 (e) shows a case in which, in the case of FIG. 15 (c), the preceding Nth audio information 630 is prioritized and a part of the subsequent N + 1th audio information 650 is deleted. Shows a method of connecting two pieces of audio information. Further, in FIG. 15 (f), in the case of FIG. 15 (c), the subsequent N + 1th audio information 650 is prioritized, and the actual data of the previous Nth audio information 630 is thinned out. This shows a method for connecting audio information.

  As described above, when the playback apparatus 400 determines that a part of two pieces of continuous audio information is overlapped in consideration of the elapsed time information, FIGS. 15D, 15E, and 15F are used. ) Is used to control the audio information to be output without interruption.

  FIG. 16 is a diagram illustrating an example in which a drive recorder is mounted on another vehicle.

  In the above-described example, the description has been made based on the example in which the drive recorder 2 is mounted on a truck (see FIG. 1). However, the drive recorder 2 can be mounted on a taxi vehicle 1 ′ which is another vehicle, for example. Is possible. In that case, the drive recorder 2 is installed in the vehicle 1 ′, the first camera 3 that images the front of the vehicle 1, the second camera 4 that images the crew of the vehicle 1 ′, and the rear seat for the passenger of the vehicle 1 ′. It connects with the 3rd camera 5 to image. Note that when the drive recorder 2 is mounted in a taxi, the terminal 10 is not used, and instead, a button 15 for executing the imaging SW, which is one of the recording conditions, is appropriately set in the vehicle 1 ′. It is preferable to provide at a location.

DESCRIPTION OF SYMBOLS 1 Vehicle 2 Drive recorder 3 1st camera 4 2nd camera 5 3rd camera 6 RAM
7 memory card 10 terminal 11 display unit 12 operation unit 15 button 20 CPU
22 Image IC
24 slots 40 non-volatile ROM
DESCRIPTION OF SYMBOLS 50 Acceleration sensor 51 GPS receiver 53 Vehicle speed sensor 57 ACC switch 58 IG switch 60 Power supply circuit 70 Opening / closing knob 100 Poly switch 400 Playback apparatus 401 CPU
405 Operation unit 406 Display unit 407 Recording means 408 Map information storage unit 409 Card information storage unit

Claims (5)

Imaging means for imaging image information;
A state detector that detects state information representing the state of the vehicle;
A control unit that controls to record the image information and the state information in a recording unit,
The control unit is configured to be able to set whether the recording of the image information in the recording unit and the recording of the state information in the recording unit are performed synchronously or asynchronously.
A drive recorder characterized by that. A voice detection unit for detecting voice information;
The control unit controls to record the audio information in a recording unit;
The drive recorder according to claim 1, wherein the control unit is configured to be able to set whether to record the audio information in a recording unit. The control unit controls to record at least the image information on the recording unit when a predetermined recording condition is satisfied, and controls to record at least the image information on the recording unit on a regular basis,
3. The drive recorder according to claim 2, wherein the control unit is configured to be able to set whether to record the audio information in a recording unit in each of recording when a recording condition is established and steady recording. .   4. The control unit according to claim 1, wherein reference information for synchronizing the image information and the audio information is added to the image information and the audio information and is recorded in a recording unit. The drive recorder according to one item.   The drive recorder as described in any one of Claims 1-4 which further has a setting part for setting the information which a control part records on a recording means.

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