JP2020135597A - Recording/reproducing device, recording/reproducing method, and program - Google Patents

Abstract

To provide a recording/reproducing device and the like that reproduce stored data without performing a complicated operation.SOLUTION: A recording/reproducing device 10 has: a photographic data acquisition unit 120 that acquires photographic data; and an event detection unit 127 that detects that an event for a moving body has occurred. The recording/reproducing device 10 also has: a recording control unit 123 that, based on detection of the event, stores photographic data for a previously set period in at least a part of the photographic data as event recording data; a mobile body information acquisition unit 130 that acquires mobile body information concerning a state of the moving body; and a reproduction control unit 124 that, in a case where it is detected that a power source of the moving body has changed from the ON state to the OFF state in a first period which is the previously set period since detection of the event based on the mobile body information, starts reproduction of the event recording data.SELECTED DRAWING: Figure 1

Description

The present invention relates to a recording / reproducing device, a recording / reproducing method and a program.

It has a means for acquiring data such as images by photographing the surrounding conditions of the vehicle and a means for detecting that the vehicle has received some kind of impact, and has a predetermined period based on the time when the impact on the vehicle is detected. Drive recorders that store images and the like in a playable manner are widespread. For example, Patent Document 1 discloses a drive recorder that records video data based on a transition of acceleration. Such a drive recorder reproducibly saves the situation of an accident when an event due to an accident or the like is detected. In addition, the drive recorder reproducibly saves the dangerous driving situation when an abnormal acceleration is detected due to dangerous driving or the like.

Japanese Unexamined Patent Publication No. 2009-087007

However, drive recorder users are often not familiar with how to operate the drive recorder. In addition, when an event such as an accident occurs, the user cannot perform complicated operations. Therefore, the user may not be able to properly reproduce the video of the event saved by the drive recorder.

The present invention has been made to solve such a problem, and provides a recording / reproducing device or the like that reproduces stored data without performing complicated operations.

The recording / reproducing device according to the present invention is installed in a moving body and records and reproduces shooting data taken by a camera, and is a shooting data acquisition unit, an event detection unit, a recording control unit, a moving body information acquisition unit, and It has a reproduction control unit. The shooting data acquisition unit acquires shooting data. The event detection unit detects that an event has occurred for the moving body. The recording control unit saves shooting data for a preset period from at least a part of the shooting data based on the detection of the event as event recording data. The moving body information acquisition unit acquires moving body information regarding the state of the moving body. The playback control unit has detected that the power source of the moving body has changed from the on state to the off state based on the moving body information within the first period, which is a preset period from the time when the event is detected. If so, start playing the event recording data.

The memory / reproduction method according to the present invention includes a photographing data acquisition step, an event detection step, a recording control step, a moving body information acquisition step, and a reproduction control step. The shooting data acquisition step acquires shooting data. The event detection step detects that an event has occurred for the moving object. The recording control step saves shooting data for a preset period from at least a part of the shooting data based on the detection of the event as event recording data. The moving body information acquisition step acquires moving body information regarding the state of the moving body. The playback control step has detected that the power source of the moving body has changed from the on state to the off state based on the moving body information within the first period, which is a preset period from the time when the event is detected. If so, start playing the event recording data.

The program according to the present invention is to be executed by a computer operating a recording / reproducing device, and has a photographing data acquisition step, an event detection step, a recording control step, a moving body information acquisition step, and a reproduction control step. The shooting data acquisition step acquires shooting data. The event detection step detects that an event has occurred for the moving object. The recording control step saves shooting data for a preset period from at least a part of the shooting data based on the detection of the event as event recording data. The moving body information acquisition step acquires moving body information regarding the state of the moving body. The playback control step has detected that the power source of the moving body has changed from the on state to the off state based on the moving body information within the first period, which is a preset period from the time when the event is detected. If so, start playing the event recording data.

INDUSTRIAL APPLICABILITY According to the present invention, it is possible to provide a recording / reproducing device or the like that reproduces stored data without performing complicated operations.

It is a block diagram which shows the structure of the recording / reproduction apparatus which concerns on Embodiment 1. FIG. It is a right side view of the recording / reproduction apparatus which concerns on Embodiment 1. FIG. It is a rear view of the recording / reproduction apparatus which concerns on Embodiment 1. FIG. It is a front view of the recording / reproduction apparatus which concerns on Embodiment 1. FIG. FIG. 1 is a first diagram showing a relationship between time and shooting data stored in a recording / playback device. It is a 2nd figure which shows the relationship between the photographing data stored in a recording / reproduction apparatus, and time. It is a flowchart when the recording / playback apparatus detects the occurrence of an event. It is a flowchart when the recording / reproduction apparatus which concerns on Embodiment 1 reproduces event recording data. It is a flowchart when the recording / reproduction apparatus which concerns on Embodiment 2 reproduces event recording data. It is a block diagram which shows the structure of the recording / reproduction apparatus which concerns on Embodiment 3. It is a flowchart when the recording / reproduction apparatus which concerns on Embodiment 3 reproduces event recording data.

For the sake of clarity, the following description and drawings have been omitted and simplified as appropriate. In each drawing, the same elements are designated by the same reference numerals, and duplicate explanations are omitted as necessary.

<Embodiment 1>
Hereinafter, the configuration of the first embodiment will be described with reference to the drawings. The recording / reproducing device 10 according to the present embodiment is used by being installed in a vehicle such as an automobile which is a moving body, and records and reproduces the photographing data photographed by the camera, for example, in a device called a drive recorder. is there. The recording / reproducing device 10 has a function of reproducibly recording shooting data for a preset period as "event recording data" by using the impact applied when a sudden impact or the like is applied as a trigger. ing. The driver of the automobile or the like can grasp the situation of the event by reproducing the event record data and viewing the video of the reproduced event record data.

FIG. 1 is a block diagram showing a configuration of a recording / playback device according to the first embodiment. As shown in the figure, the recording / reproducing device 10 has a control unit 100 that controls the control of each component and a plurality of components connected to the control unit 100. The control unit 100 is a control device having a circuit board on which a CPU (Central Processing Unit), a GPU (Graphics Processing Unit), a memory, a plurality of interfaces, and the like are mounted, and executes various stored programs. Executes the processing of.

The details of the control unit 100 will be described below. The control unit 100 includes a shooting data acquisition unit 120, a buffer memory 121, a shooting data processing unit 122, a recording control unit 123, a reproduction control unit 124, an operation control unit 125, a display control unit 126, an event detection unit 127, and a position information acquisition unit. It has 128, a timer 129, and a moving body information acquisition unit 130, and a configuration for executing these processes and controls is realized by a program executed by the control unit 100. For convenience, each of these configurations is expressed as if it were connected to the bus line 110.

The shooting data acquisition unit 120 acquires the shooting data supplied from the camera 150. The shooting data acquisition unit 120 supplies the shooting data to the buffer memory 121 via the bus line 110.

The buffer memory 121 is a volatile or non-volatile memory device. The buffer memory 121 sequentially receives the shooting data periodically generated by the camera 150 via the shooting data acquisition unit 120, and temporarily stores the received shooting data. The shooting data temporarily stored in the buffer memory 121 is for a preset period. The buffer memory 121 sequentially erases the shooting data that has passed the preset period, or sequentially overwrites the newly received shooting data.

The shooting data processing unit 122 generates a shooting file in a format conforming to a preset method from the shooting data stored in the buffer memory 121. The preset method includes, for example, H. It is a method such as 264 or MPEG-4 (Moving Picture Experts Group).

The shooting data processing unit 122 may process the shooting data and generate a shooting file having a preset angle of view. Further, the shooting data processing unit 122 processes the shooting data output by the buffer memory 121, generates shooting data at a preset time or a preset angle of view, and adds header information such as a file name. You may generate a shooting file. Further, the shooting data processing unit 122 may process the shooting data output by the buffer memory 121 to perform noise removal, distortion correction, etc. of the shooting data, and the shooting data includes time information, vehicle speed information, or vehicle position. You may generate a shooting file that displays information and the like.

The recording control unit 123 controls the recording device 160 to save the shooting file generated by the shooting data processing unit 122. When the event detection unit 127 detects an event, the recording control unit 123 saves the shooting file for a preset period based on the detection of the event in the recording device 160 as event recording data for which overwriting is prohibited. The recording control unit 123 stores the event recording data in a predetermined recording area in the recording device 160. The predetermined recording area is, for example, a recording area for which overwriting or erasure is prohibited. Alternatively, the event recording data supplied to the recording device 160 by the recording control unit 123 may be saved by including a flag in the file indicating that overwriting or erasing is prohibited.

Further, the recording control unit 123 records in the recording device 160 information indicating whether or not the event recording data stored in the recording device 160 has been reproduced by the reproduction control unit 124 in the past. As a result, the reproduction control unit 124 can identify which event recorded data has not been reproduced.

If the event detection unit 127 does not detect an event, the recording control unit 123 may store the shooting file in the recording device 160 as an overwriteable state. A shooting file different from the event recording data stored in the recording device 160 is referred to as a "normal file" here. When the storage capacity of the recording device 160 reaches the upper limit, the recording control unit 123 may erase the old normal file and record the newly generated normal file in the recording device 160.

The reproduction control unit 124 performs a process for reproducing the stored event recording data under preset conditions. The preset condition is a case where it is detected that the power source of the moving body has changed from the on state to the off state within the first period, which is a preset period from the time when the event event is detected. .. In this case, the reproduction control unit 124 receives a signal from the moving body information acquisition unit 130 indicating that the power source of the moving body has changed from the on state to the off state.

The reproduction control unit 124 monitors the timer 129 and determines whether or not the first period has elapsed from the time when the event was detected. When the event recording data is reproduced, the reproduction control unit 124 reads the event recording data recorded in the recording device 160 and supplies the read event recording data to the display control unit 126. The first period is a period after an event such as an accident occurs, such as 1 minute or 3 minutes, until the vehicle is stopped due to the occurrence of the event.

The reproduction control unit 124 changes the power source of the moving body from the on state to the off state within the first period from the time when the event is detected and after the storage of the event recording data based on the detected event is completed. When it is detected that the event has been recorded, the saved event recording data is started to be played back. The reproduction control unit 124 changes the power source of the moving body from the on state to the off state within the first period from the time when the event is detected and before the storage of the event recording data based on the detected event is completed. If it is detected that the event recording data has been saved, the saved event recording data may be started to be played after the saving of the event recording data is completed, and the event recording data may be played back before the saving of the event recording data is finished. If possible, the reproduction of the event recording data may be started. In this case, the shooting file to be saved as event recording data may be played back.

The operation control unit 125 acquires the operation information received by the operation unit 140, and outputs an operation instruction based on the operation information to each component. When the operation control unit 125 acquires the selection instruction of various data to be reproduced from the operation unit 140, the operation control unit 125 causes the reproduction control unit 124 to select a file or the like recorded in the recording device 160. When the operation control unit 125 obtains an instruction regarding reproduction of various data from the operation unit 140, the operation control unit 125 causes the reproduction control unit 124 to perform processing related to reproduction. The instructions regarding the reproduction of various data are, for example, reproduction start, pause, reproduction stop, enlarged display, and the like.

The display control unit 126 controls the display unit 141 to display various information. For example, the display control unit 126 causes the display unit 141 to display the shooting data being shot by the camera 150. Further, the display control unit 126 receives the event recording data supplied from the reproduction control unit 124, and causes the display unit 141 to display the received event recording data. When the touch sensor is superimposed on the display unit 141 as a function of the operation unit 140, the display control unit 126 causes the display unit 141 to appropriately display an icon or the like corresponding to the touch sensor.

The event detection unit 127 receives information on the acceleration detected by the acceleration sensor 142, and detects that a predetermined event has occurred from the signal magnitude and signal pattern of the received information. The acceleration received from the outside is an acceleration received by the recording / reproducing device 10 from the outside of the recording / reproducing device, and is an acceleration generated by, for example, an impact generated when an automobile collides with another object. Further, the acceleration received from the outside includes an impact directly received by the user or the like on the recording / playback device 10 itself.

When the event detection unit 127 detects that the information received from the acceleration sensor 142 corresponds to the occurrence of a predetermined event, the event detection unit 127 supplies a signal indicating that the occurrence of the event has been detected to the photographing data processing unit 122. The occurrence of an event is when an acceleration generated in the case of an accident, such as an impact due to sudden braking or an impact when an object collides with a vehicle, is detected. For example, when an acceleration exceeding a preset magnitude is detected in a preset direction beyond a preset period, or when a change in acceleration is large during a preset period, etc. In addition, the event detection unit 127 detects the occurrence of an event. The event detection unit 127 may detect the acceleration of the X-axis, the Y-axis, and the Z-axis, which are the coordinate axes of the three-axis coordinates, or detect the acceleration in at least one of these directions. May be good. Further, the acceleration received from these three axial directions may be weighted. Further, the event detection unit 127 also supplies a signal indicating that the occurrence of an event has been detected to the timer 129.

The position information acquisition unit 128 receives a signal from a GPS satellite received by a GPS (Global Positioning System) reception unit 143, acquires position information which is information on the current position from the received signal, and records and controls the acquired position information. Supply to unit 123. The position information includes, for example, the latitude and longitude of the vehicle at the time when the signal is received from the GPS satellite.

The timer 129 receives a signal indicating that the occurrence of an event has been detected from the event detection unit 127, resets the count value of the timer using this as a trigger signal, and starts operation. When the timer 129 starts operating, it counts up to the first period, which is a preset period.

The moving body information acquisition unit 130 acquires the moving body information via the communication unit 170. The moving body information is information on the state of the vehicle which is the moving body, and is, for example, the position of the shift lever, the lighting state of the hazard lamp, the activation state of the main power supply, and the like. The moving body information also includes the state of the power source of the vehicle. In the present embodiment, the power source of the vehicle is a drive source for moving the vehicle, for example, an engine when the vehicle has a fossil fuel engine, and a drive motor when the vehicle is moved by a motor. Is. Alternatively, the power source is an essential power source (main power source for the vehicle) for driving these means of transportation.

The change of the power source of the moving body from the on state to the off state means, for example, the change from the state in which the engine is operating (on state) to the state in which the engine is not operating (off state). Further, when the power source of the moving body changes from the on state to the off state, it means that the drive motor changes from a driveable state (on state) to a non-driveable state (off state). Alternatively, changing the power source of the moving body from the on state to the off state means changing from a state in which power is supplied to the circuit controlling the movement (on state) to a state in which power is not supplied (off state).

Next, each configuration connected to the control unit 100 will be described. The recording / reproducing device 10 includes an operation unit 140, a display unit 141, an acceleration sensor 142, a GPS receiving unit 143, a camera 150, a recording device 160, and a communication unit 170.

The operation unit 140 is a user interface that accepts operations performed by the user on the recording / playback device 10. The user interface may be, for example, an operation button or a touch sensor installed so as to be superimposed on the display unit 141. Further, the user interface may be a receiving unit for infrared rays or wireless communication and may receive a signal transmitted from a remote controller or the like. The operation unit 140 supplies the operation information, which is information about the received operation, to the control unit 100 via a predetermined interface. The operation information is, for example, an instruction to start event recording, an instruction to reproduce event recording data, or the like.

The display unit 141 is a display device that displays various information under the control of the display control unit 126. The display unit 141 has at least a display panel such as a liquid crystal panel or an organic EL (Electro Luminescence). The display unit 141 is connected to the display control unit 126 and displays a signal supplied from the display control unit 126. The display unit 141 is configured to display an image included in the event recording data.

The acceleration sensor 142 is, for example, a 3-axis acceleration sensor, and is installed at an arbitrary location in the recording / playback device 10. The acceleration sensor 142 detects the acceleration applied to the acceleration sensor 142, and supplies information on the detected acceleration to the control unit 100 according to the detected acceleration. The acceleration sensor 142 is connected to the event detection unit 127, and supplies information on the detected acceleration to the event detection unit 127. As for the state related to the acceleration supplied by the acceleration sensor 142 to the control unit 100, other configurations can be used as appropriate, and more specifically, the reproduction control unit 124 also uses the information regarding the acceleration received from the acceleration sensor 142. .. The acceleration sensor 142 may be a 1-axis or 2-axis acceleration sensor instead of the 3-axis acceleration sensor.

The GPS receiving unit 143 receives information on the current position of the vehicle by a satellite positioning system called GPS or GNSS (Global Navigation Satellite System). The GPS receiving unit 143 may be an antenna for receiving GPS signals, or may be a communication interface for receiving position information acquired by the vehicle. The GPS receiving unit 143 supplies the received signal regarding the current position to the position information acquisition unit 128.

The camera 150 is an image pickup device having an objective lens, an image pickup element, an AD (Analog to Digital) conversion element, and the like. The camera 150 captures an image including the scenery around the moving vehicle, and generates shooting data which is the data of the captured image. The camera 150 supplies the generated shooting data to the shooting data acquisition unit 120.

The recording device 160 is a recording device that stores the shooting data supplied from the camera 150. The recording device 160 is, for example, a memory card including a flash memory, or a non-volatile recording device such as an SSD (Solid State Drive) or an HDD (Hard Disc Drive). The recording device 160 connects to the recording control unit 123, receives predetermined data from the recording control unit 123, and records the received data. Further, the recording device 160 supplies an event file including the event recording data recorded to the reproduction control unit 124 in response to the instruction of the reproduction control unit 124. The recording device 160 may be configured to be removable from the recording / reproducing device 10, or may be configured not to be removable.

The communication unit 170 is an interface for connecting to the in-vehicle network provided in the vehicle in which the recording / playback device 10 is installed, and the information received from the vehicle via the in-vehicle network is received by the control unit 200 as mobile body information. It is supplied to the acquisition unit 130. The in-vehicle network is, for example, CAN (Controller Area Network), Ethernet (registered trademark), Flexray, or the like.

Next, the mechanical configuration of the recording / reproducing device 10 will be described with reference to FIGS. 2 to 4. FIG. 2 is a right side view of the recording / reproducing device 10 according to the first embodiment. FIG. 3 is a rear view of the recording / reproducing device 10 according to the first embodiment as viewed from the photographing direction. FIG. 4 is a front view of the recording / reproducing device 10 according to the first embodiment as viewed from the display direction. As a convenience for explaining the positional relationship of the components, FIGS. 2 to 4 have a right-handed Cartesian coordinate system. Further, in the following figures, when the Cartesian coordinate system is attached, the X-axis, Y-axis, and Z-axis directions of FIGS. 2 to 4 and the X-axis, Y-axis, and Z-axis directions of these Cartesian coordinate systems. Are in agreement.

As shown in FIG. 2, the recording / reproducing device 10 is fixed to the windshield WS of the vehicle via the bracket 900. The bracket 900 has an adhesive portion 901, a holding portion 902, and a ball joint 903.

The adhesive portion 901 is a member to which an adhesive is applied to the surface in contact with the windshield WS. The bracket 900 is fixed by the adhesive portion 901 being adhered to an arbitrary position of the windshield WS.

The holding unit 902 is fitted so that the recording / reproducing device 10 that can be attached to / detached from / detached / attached to the attachment / detachment portion 921 of the recording / reproducing device 10 does not come off when the vehicle is running or the like, and the shooting orientation is not deviated. For example, the holding portion 902 has ribs or grooves that can be slid and engaged with the detachable portion 921 of the recording / reproducing device 10 in a predetermined direction, and when slid to a predetermined dimension, a locking mechanism (not shown). ) To lock and fix without rattling.

The ball joint 903 is a joint mechanism provided so that the angle between the adhesive portion 901 and the holding portion 902 can be adjusted, and is movable when a predetermined external force is applied. In a state where the adhesive portion 901 is adhered to the windshield WS and the holding portion 902 is fitted with the recording / reproducing device 10, the ball joint 903 is configured not to move unless a predetermined external force is applied.

The user who uses the recording / reproducing device 10 adheres the adhesive portion 901 to the windshield WS and fits the attachment / detachment portion 921 of the recording / reproducing device 10 to the holding portion 902. As a result, the recording / reproducing device 10 is fixed to the vehicle.

When removing the recording / reproducing device 10 fixed to the vehicle, the user releases the attachment / detachment portion 921 of the recording / reproducing device 10 from the holding portion 902. When releasing the detachable portion 921 from the holding portion 902, the user releases the lock mechanism (not shown) and then slides the detachable portion 921 so as to pull it away from the holding portion 902. As a result, the recording / reproducing device 10 is removed from the vehicle, and the user can grasp the recording / reproducing device 10.

As shown in FIGS. 2 to 4, the recording / playback device 10 has a substantially rectangular parallelepiped shape in which the front surface and the back surface thereof are rectangular main surfaces and have a thickness of about a fraction of the short side of the rectangle projected from the front surface. Is made up of. The periphery of the recording / reproducing device 10 is covered with a resin case 920. The recording / playback device 10 is provided with a display panel included in the display unit 141 on the front surface, an objective lens of the camera 150 exposed on the back surface, and a detachable unit 921 on the upper surface. Therefore, in the recording / playback device 10, the attachment / detachment portion 921 provided on the upper surface is fitted to the holding portion of the bracket 900, the objective lens of the camera 150 is exposed in the traveling direction of the vehicle, and the display panel of the display unit 141 is the driver. It is arranged facing the user side. By installing the recording / reproducing device 10 in this way, the recording / reproducing device 10 captures an image in the traveling direction and displays the captured image to the user. The size of the display panel of the recording / reproducing device 10 is, for example, about 1.5 inches to 4 inches diagonally. Further, the size of the case 920 is, for example, about 5 cm to 10 cm in the width direction (X-axis direction).

The recording / playback device 10 has a cable 922 extending from the upper surface of the case 920. The cable 922 connects to the in-vehicle network. The recording / playback device 10 is connected to the in-vehicle network by a cable 922 to acquire mobile body information. Further, the recording / reproducing device 10 may be supplied with power from the vehicle by the cable 922. Further, the recording / reproducing device 10 may acquire the mobile body information by using wireless communication without using the cable 922.

Next, the shooting data will be described with reference to FIG. FIG. 5 is a first diagram showing the relationship between the shooting data stored in the recording / playback device and the time. The horizontal axis of the figure represents time, and indicates that time elapses in the direction of the arrow (to the right) from time t10 to time t11.

The elongated shape shown along the time axis is the photographing data C11 at time t11. The shooting data C11 is shooting data generated by the camera 150 and is stored in the buffer memory 121. The recording / playback device 10 is set to always store the shooting data of Pn for a preset period. The period Pn is, for example, a period of 60 seconds, 120 seconds, or 150 seconds. The shooting data C11 at the time t11 is the shooting data from the time t10 to the time t11 that goes back from the time t11 to the period Pn. Further, as for the shooting data stored in the buffer memory 121, the shooting data in the past from the period Pn are sequentially deleted with the passage of time.

Here, in the example shown in FIG. 5, it is assumed that the recording / playback device 10 detects the occurrence of an event at time t11. Therefore, the recording / playback device 10 then performs a process of generating event recording data with reference to the time t11.

Next, the shooting data and the event recording data after the occurrence of the event is detected will be described with reference to FIG. FIG. 6 is a second diagram showing the relationship between the shooting data stored in the recording / playback device and the time. FIG. 6 shows the structure of data at time t21 after time t11. What is stored in the buffer memory 121 at the time t21 is the shooting data C21 from the time t20 to the time t21, which is traced back from the time t21 to the period Pn.

The rectangle shown below the shooting data C21 is the event recording data E11. The event recording data E11 is extracted from the shooting data according to the event detected at the time t11. In the present embodiment, the recording / reproducing device 10 sets the time ts retroactive from the time t11 to the period P1 as the start time of the event recording data, based on the time t11 when the event is detected. Further, in the present embodiment, the recording / reproducing device 10 sets the time te when the period P2 has elapsed with reference to the time t11 when the event is detected as the end time of the event recording data. The period P1 and the period P2 are periods such as, for example, 10 seconds, 15 seconds, or 20 seconds. That is, the recording / reproducing device 10 stores the shooting data in the period from the time ts to the time te as the event recording data E11.

By generating the event recording data as described above, the recording / playback device 10 can store the shooting data for the period before and after the event that has occurred. Therefore, the user can visually recognize the situation around the vehicle before and after the event occurrence by reproducing the event recording data saved by the recording / reproducing device 10 after the event occurs.

The recording / playback device 10 may record a normal file in the recording device 160 in addition to the event recording data. In that case, the recording / playback device 10 extracts the shooting data for a predetermined period from the shooting data stored in the buffer memory 121, and records the extracted shooting data as a normal file in the recording device 160. The recording / playback device 10 may perform a process of recording a normal file and a process of storing event recording data in parallel.

Next, the processing performed by the recording / reproducing device 10 will be described with reference to FIG. 7. FIG. 7 is a flowchart when the recording / playback device detects the occurrence of an event. FIG. 7 shows a process performed by the control unit 100 when the recording / playback device 10 detects an event. The flowchart shown in FIG. 7 is started under arbitrary conditions such as power being supplied from the vehicle to the recording / reproducing device 10 based on the start of operation of the vehicle or the like.

First, the control unit 100 starts acquiring shooting data (step S10). In step S10, the control unit 100 also starts detecting an event. The shooting data is periodically supplied from the camera 150 (for example, 30 frames per second). The shooting data acquisition unit 120 supplies the shooting data supplied from the camera 150 to the buffer memory 121. The buffer memory 121 stores the shooting data for a preset period (for example, 60 seconds), and after the shooting data for the preset period is stored, the new shooting data is sequentially stored while deleting the old shooting data. ..

Next, the event detection unit 127 determines whether or not the occurrence of an event has been detected from the information supplied from the acceleration sensor 142 (step S11). When it is determined that the occurrence of an event has been detected (step S11: Yes), the recording control unit 123 generates event recording data and causes the recording device 160 to record the event (step S12). On the other hand, if it is not determined in step S11 that the occurrence of the event has been detected (step S11: No), the control unit 100 does not generate the event recording data and proceeds to step S13.

Next, the control unit 100 determines whether or not to end a series of processes (step S13). If it is not determined that the process is completed (step S13: No), the control unit 100 returns to step S11 and determines whether or not the occurrence of the event is detected again. On the other hand, when it is determined to end the process (step S13: Yes), the control unit 100 ends the process.

Next, the reproduction processing of the event recording data performed by the control unit 100 will be described with reference to FIG. FIG. 8 is a flowchart in the case where the recording / reproducing device 10 reproduces the event recording data. The process of FIG. 8 is started when step S11 in the process of FIG. 7 becomes Yes, that is, when an event is detected.

First, when the event is detected, the reproduction control unit 124 resets the count value of the timer 129 (step S110), and then starts the operation of the timer 129 (step S111). The timer 129 sequentially increments the count value with the passage of time. Next, the reproduction control unit 124 reads the count value of the timer 129 and determines whether or not the count value has passed the first period (step S112). When it is determined that the count value has passed the first period (step S112: Yes), the control unit 100 ends the process shown in FIG.

When it is not determined in step S112 that the count value has passed the first period (step S112: No), the reproduction control unit 124 uses the moving body information acquired by the moving body information acquisition unit 130 as the power source of the vehicle. It is determined whether or not the state has changed from the operating state to the stopped state (step S113). Here, the vehicle in which the recording / reproducing device 10 according to the present embodiment is installed is equipped with an engine as a power source. Therefore, the reproduction control unit 124 determines whether or not the engine has stopped from the moving body information acquired via the communication unit 170.

If it is not determined that the engine has stopped (step S113: No), the control unit 100 proceeds to step S112. On the other hand, when it is determined in step S113 that the engine has changed to the stopped state (step S113: Yes), the reproduction control unit 124 stops the counting of the timer 129 (step S114), and the event recording data to be reproduced is recorded. Playback is started (step S115). The event recording data to be reproduced is the event recording data saved in the processing of FIG. 7 based on the event that triggered the start of the processing of FIG. 8, that is, the event recording data saved immediately before the engine is stopped.

Next, the reproduction control unit 124 determines whether or not to end the reproduction of the event recorded data (step S116). Specifically, the reproduction control unit 124 detects, for example, whether or not the operation control unit 125 that accepts the user's operation has accepted the stop of the reproduction of the event recording data. When the operation of ending the reproduction is not accepted (step S116: No), the control unit 100 continues the reproduction of the event recorded data. In this case, the reproduction control unit 124 may repeatedly reproduce the event recording data until the operation of the end of reproduction is accepted. On the other hand, when the operation of ending the reproduction is accepted (step S116: Yes), the reproduction control unit 124 performs a process of ending the reproduction of the event recording data (step S117), and ends the process shown in FIG.

The reproduction process of the event recording data performed by the control unit 100 has been described above. In the above-mentioned processing, the order of steps S114 and S115 may be changed, or simultaneous processing may be executed.

In step S115, when starting the reproduction of the event recording data, a display prompting the user to perform an operation for permitting the start of the reproduction may be performed, and the reproduction of the event recording data may be started when the user gives permission. As a result, the recording / reproducing device 10 reproduces the event recording data according to the user's intention without requiring complicated operations.

In step S113 of the above process, the control unit 100 or the regeneration control unit 124 may detect that the state of the transmission of the vehicle has changed to the parking position instead of the stopped state of the engine. When the vehicle has a motor as a power source, the control unit 100 or the reproduction control unit 124 may detect that the power supply that supplies the current to the motor has changed to the off state. Alternatively, the control unit 100 or the reproduction control unit 124 may be conditional on the main power supply of the vehicle being turned off. As described above, in step S113, the control unit 100 or the reproduction control unit 124 detects that the vehicle has stopped instead of being in a movable state (pause state) by acquiring the moving body information.

Although the first embodiment has been described above, the recording / reproducing device 10 according to the first embodiment is not limited to the above-described configuration. For example, when the engine is stopped but power is supplied to the display device, communication device, or the like of the vehicle, the recording / playback device 10 does not have the display unit 141, but the vehicle has it via the communication unit 170. The event recording data may be reproduced by transmitting the event recording data to the display device. Further, the recording / reproducing device 10 may transmit / receive signals to / from the vehicle equipment by wireless communication without having the cable 922.

The first embodiment has been described above. With the above configuration, the recording / reproducing device 10 reproduces the unreproduced event recording data when the power source of the vehicle is stopped before the first period elapses after the occurrence of the predetermined event. As a result, after the occurrence of an event that is an accident, the event record data is reproduced in a stopped state, so that the state of the event can be confirmed without requiring any special operation. Therefore, according to the first embodiment, it is possible to provide a recording / reproducing device or the like that reproduces the stored data without performing complicated operations.

<Embodiment 2>
Next, the second embodiment will be described. The recording / reproducing device 10 according to the second embodiment is different from the first embodiment in the process of reproducing the event recorded data. FIG. 9 is a flowchart showing a process in which the recording / reproducing device 10 according to the second embodiment reproduces event recorded data. The flowchart shown in FIG. 9 is different from the flowchart according to the first embodiment shown in FIG. 8 in that step S120 is provided between steps S113 and S114. The points different from the first embodiment will be mainly described below.

When it is determined in step S113 that the engine has stopped (step S113: Yes), the reproduction control unit 124 reads the information of the moving body information acquisition unit 130 and determines whether or not the vehicle has turned on the hazard lamp. (Step S120). When it is not determined that the vehicle is turning on the hazard lamp (step S120: No), the control unit 100 ends the process shown in FIG. The determination in step S120 may be the determination that the hazard lamp is lit when the engine is stopped, and within a predetermined period such as 60 seconds after the determination that the engine has changed to the stopped state in step S113. It may be determined whether or not the hazard lamp is turned on.

On the other hand, when it is determined that the vehicle is turning on the hazard lamp (step S120: Yes), the reproduction control unit 124 stops the counting of the timer 129 (step S114) and reproduces the event recording data to be reproduced. Start (step S115).

In step S120 described above, instead of detecting the hazard lamp lighting, or in addition to detecting the hazard lamp lighting, when the second period elapses after the engine, which is the power source of the vehicle, is stopped, that is, the power of the vehicle. The second period of the state in which the source engine has stopped may be a condition for reproducing the event recorded data. By setting in this way, the recording / reproducing device 10 reproduces the event recording data at a suitable timing for the user to visually recognize the event recording data after the power source of the vehicle is turned off after the occurrence of an event such as an accident. To do.

The second embodiment has been described above. With the above configuration, the recording / reproducing device 20 provides a hazard lamp that indicates that the vehicle has stopped when the power source of the vehicle is stopped before the first period elapses after the occurrence of a predetermined event. When the light is on, the event record data is played back. As a result, the recording / reproducing device 20 regenerates the event recording data after alerting the other vehicle that the accident vehicle is stopped after the occurrence of the event that is the accident. As a result, the recording / reproducing device 20 can confirm the state of the event in a safe state without requiring any special operation. Therefore, according to the second embodiment, it is possible to provide a recording / reproducing device or the like that reproduces the stored data without performing complicated operations.

<Embodiment 3>
Next, the third embodiment will be described. FIG. 10 is a block diagram of the recording / playback device according to the third embodiment. The recording / reproducing device 20 according to the third embodiment has a control unit 200 instead of the control unit 100. The control unit 200 is different from the control unit 100 in that it has a retracted state detection unit 131. The recording / reproducing device 20 is also different from the first embodiment in that it further has a map database 171 connected to the evacuation state detection unit 131.

The evacuation state detection unit 131 acquires information on the position of the vehicle in which the recording / playback device 20 is installed from the position information acquisition unit 128, and also acquires information on the evacuation position where the vehicle can evacuate around the current position of the vehicle. Then, it is detected that the vehicle is in the evacuated state from this information. The retracted state means that the vehicle is in the retracted position. The evacuation position is a place different from the travel path, such as a parking lot, a shoulder of the travel path, or a shelter. The evacuation state detection unit 131 detects that the vehicle exists at the evacuation position by collating the information regarding the position of the vehicle acquired from the position information acquisition unit 128 with the information regarding the evacuation position acquired from the map database 171.

The map database 171 is a database stored in a non-volatile storage device, and includes at least information on a retracted position of a moving body. The map database 171 is configured to be able to identify which position is the evacuation position and which position is not the evacuation position by using, for example, latitude and longitude.

Next, the reproduction process of the event recorded data according to the third embodiment will be described with reference to FIG. FIG. 11 is a flowchart when the recording / reproducing device according to the third embodiment reproduces the event recording data. The flowchart shown in FIG. 11 is different from the flowchart according to the first embodiment shown in FIG. 8 in that step S210 is provided between steps S113 and S114. The points different from the first embodiment will be mainly described below.

When it is determined in step S113 that the engine has stopped (step S113: Yes), the reproduction control unit 124 reads the information of the evacuation state detection unit 131 and determines whether or not the vehicle is in the evacuation state (step S210). When the vehicle is not determined to be in the retracted state (step S210: No), the control unit 100 ends the process shown in FIG.

On the other hand, when it is determined that the vehicle is in the evacuation state (step S210: Yes), the reproduction control unit 124 stops the counting of the timer 129 (step S114) and starts the reproduction of the event recording data to be reproduced (step S114). ).

In the process of FIG. 11, after the engine is stopped (step S113: Yes), the determination in step S210 may be executed when the current position of the vehicle is, for example, on the traveling lane on the traveling road.

The third embodiment has been described above. According to the above configuration, the recording / reproducing device 20 has not been reproduced when the power source of the vehicle is stopped before the first period elapses after the occurrence of the predetermined event and the vehicle is in the retracted state. Play back the event record data of. As a result, after the event that is an accident occurs, the vehicle is evacuated and the event record data is reproduced, so that the event status can be confirmed in a safer state without requiring any special operation. can do. Therefore, according to the third embodiment, it is possible to provide a recording / reproducing device or the like that reproduces the stored data without performing complicated operations. As a matter of course, the setting of the second embodiment may be added to the configuration of the third embodiment.

The above-mentioned programs can be stored and supplied to a computer using various types of non-transitory computer-readable media. Non-transitory computer-readable media include various types of tangible recording media. Examples of non-temporary computer-readable media include magnetic recording media (eg, flexible disks, magnetic tapes, hard disk drives), magneto-optical recording media (eg, magneto-optical disks), CD-ROMs (Read Only Memory) CD-Rs, CDs. -R / W, including semiconductor memory (for example, mask ROM, PROM (Programmable ROM), EPROM (Erasable PROM), flash ROM, RAM (Random Access Memory)). The program may also be supplied to the computer by various types of temporary computer-readable media. Examples of temporary computer-readable media include electrical, optical, and electromagnetic waves. The temporary computer-readable medium can supply the program to the computer via a wired communication path such as an electric wire and an optical fiber, or a wireless communication path.

Further, the present invention is not limited to the above-described embodiment, and can be appropriately modified without departing from the spirit. For example, the above-mentioned recording / reproducing device has been described as an example of a drive recorder mounted on an automobile, but the recording / reproducing device may be mounted on various types of vehicles such as motorcycles and bicycles. Further, the target on which the recording / reproducing device is mounted is not limited to a vehicle, and may be a moving body such as a railroad, a ship, or an aircraft. Further, the recording / reproducing device may be worn and used by a human being, a walking robot, or the like.

10, 20 Recording / playback device 100, 200 Control unit 110 Bus line 120 Shooting data acquisition unit 121 Buffer memory 122 Shooting data processing unit 123 Recording control unit 124 Playback control unit 125 Operation control unit 126 Display control unit 127 Event detection unit 128 Position information Acquisition unit 129 Timer 130 Mobile information acquisition unit 131 Evacuation state detection unit 140 Operation unit 141 Display unit 142 Acceleration sensor 143 GPS receiver 150 Camera 160 Recording device 170 Communication unit 171 Map database 900 Bracket 901 Adhesion unit 902 Holding unit 903 Ball joint 920 Case 921 Detachable part 922 Cable C11, C21 Shooting data E11 Event recording data WS Windshield

Claims (7)

A recording / playback device that is installed on a moving body and records and reproduces shooting data taken by a camera.
A shooting data acquisition unit that acquires the shooting data,
An event detection unit that detects that an event has occurred for the moving body,
A recording control unit that saves the shooting data for a preset period from at least a part of the shooting data as event recording data based on the detection of the event.
A moving body information acquisition unit that acquires moving body information regarding the state of the moving body, and
When it is detected that the power source of the moving body has changed from the on state to the off state based on the moving body information within the first period which is a preset period from the time when the event is detected. , A recording / reproducing device including a reproduction control unit for starting reproduction of the event recording data. The reproduction control unit detects that the power source has changed from the on state to the off state, and then when the second period, which is a preset period for the off state of the power source, elapses, the event recording data. The recording / playback device according to claim 1, wherein the playback of the above is started. When the reproduction control unit detects that the power source has changed from the on state to the off state, and detects from the moving body information that the hazard lamp of the moving body is in the on state, the event The recording / reproducing device according to claim 1 or 2, wherein the reproduction of the recorded data is started. A retracted state detection unit for detecting that the moving body is in the retracted state is further provided.
The recording / reproducing device according to any one of claims 1 to 3, wherein the reproduction control unit starts reproduction of the event recording data when it detects that the moving body is in the retracted state. The recording / reproduction according to any one of claims 1 to 4, wherein the reproduction control unit repeats reproduction of the event recording data after the reproduction of the event recording data is started until an instruction to stop reproduction of the event recording data is received. apparatus. The shooting data acquisition step to acquire the shooting data taken by the camera installed in the moving body, and
An event detection step for detecting that an event for the moving body has occurred, and
A recording control step of saving the shooting data for a preset period from at least a part of the shooting data as event recording data based on the detection of the event.
A moving body information acquisition step for acquiring moving body information regarding the state of the moving body, and
When it is detected that the power source of the moving body has changed from the on state to the off state based on the moving body information within the first period which is a preset period from the time when the event is detected. , A recording / reproducing method including a reproduction control step for starting reproduction of the event recording data. A program that is executed by a computer that operates a recording / playback device.
Shooting data acquisition step to acquire shooting data and
An event detection step that detects that an event has occurred for a moving object,
A recording control step of saving the shooting data for a preset period from at least a part of the shooting data as event recording data based on the detection of the event.
A moving body information acquisition step for acquiring moving body information regarding the state of the moving body, and
When it is detected that the power source of the moving body has changed from the on state to the off state based on the moving body information within the first period which is a preset period from the time when the event is detected. , A program including a reproduction control step for starting reproduction of the event recorded data.

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