Vehicle recording control device and recording control method

Abstract

To appropriately record an event.SOLUTION: A control device 100 includes: a shooting data acquisition unit 111 that acquires video data shot by a camera 211 that shoots the surroundings of a vehicle; an event detection unit 117 that detects an event based on acceleration added to the vehicle; an operation control unit 116 that accepts an event recording operation through a user operation; and a recording control unit 122 that records the video data acquired by the shooting data acquisition unit 111 and in a case where the operation control unit 116 accepts the event recording operation, and in a case where acceleration more than or equal to a predetermined value not determined by the event detection unit 117 as an event is detected before the event recording operation is accepted, generates, from the video data, event data that tracks further than that in a case where acceleration more than or equal to the predetermined value not determined by the event detection unit 117 as an event is not detected before the event recording operation is accepted, and stores the event data.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a recording control device and a recording control method for a vehicle. [Background technology]

[0002] Event recording in a vehicle's drive recorder may be due to detection of a collision based on acceleration, or due to a user operation. A technique for changing the event recording time of a drive recorder has also been proposed (see, for example, Patent Document 1). The technique described in Patent Document 1 lengthens the event recording time before an event is detected based on the vehicle's running speed. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2018-191207 A Summary of the Invention [Problem to be solved by the invention]

[0004] The event data is, for example, video data for a period of 10 seconds before and after the event detection time or the operation reception time. However, in the event recording by the user operation, depending on the situation in which the operation to instruct the event recording is performed, the user may not be able to quickly instruct the event recording, and a time lag may occur between the occurrence of the event to be saved as event data and the operation. For this reason, the event may not be properly recorded in the recorded event data. Event recording by the user operation is performed when recording an accident of another vehicle in which the vehicle is not a party, when recording an event other than an accident based on the user's interest, etc., in addition to when the vehicle may be a party to an accident, but the magnitude of the acceleration applied to the vehicle is not the acceleration that is judged as an event, and when the event recording based on the acceleration is not performed.

[0005] The present disclosure has been made in consideration of the above, and aims to appropriately record events. [Means for solving the problem]

[0006] In order to solve the above-mentioned problems and achieve the objective, the vehicle recording control device of the present disclosure includes a shooting data acquisition unit that acquires video data captured by a camera that captures the surroundings of the vehicle, an event detection unit that detects an event based on acceleration applied to the vehicle, an operation control unit that accepts an event recording operation by a user, and a recording control unit that records the video data acquired by the shooting data acquisition unit, and when the operation control unit accepts the event recording operation, generates and stores event data going back a longer period from the video data if acceleration of a predetermined value or more that the event detection unit does not determine as an event was detected before the event recording operation was accepted, compared to a case where acceleration of a predetermined value or more that the event detection unit does not determine as an event was not detected before the event recording operation was accepted.

[0007] The recording control method according to the present disclosure includes a recording control device for a vehicle, which includes a shooting data acquisition step of acquiring video data captured by a camera that captures the surroundings of the vehicle, an event detection step of detecting an event based on acceleration applied to the vehicle, an operation control step of accepting an event recording operation by a user, and a recording control step of recording the video data acquired by the shooting data acquisition step, and, when the event recording operation is accepted by the operation control step, generating and storing event data going back a longer period from the video data if acceleration of a predetermined value or more that is not determined to be an event by the event detection step was detected before the event recording operation was accepted, compared to a case where acceleration of a predetermined value or more that is not determined to be an event by the event detection step was not detected before the event recording operation was accepted. Effect of the Invention

[0008] According to the present disclosure, an effect of enabling events to be appropriately recorded is achieved. [Brief description of the drawings]

[0009] [Figure 1] FIG. 1 is a block diagram showing an example of the configuration of a vehicle-mounted recording device having a control device according to the first embodiment. [Diagram 2] FIG. 2 is a diagram showing an example of a recording period of event data. [Diagram 3] FIG. 3 is a flowchart showing an example of a processing flow in the control device according to the first embodiment. [Figure 4] FIG. 4 is a diagram showing another example of the recording period of the event data. [Diagram 5] FIG. 5 is a flowchart showing an example of a process flow in the control device according to the second embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a vehicle record control device and a record control method according to the present disclosure will be described in detail below with reference to the accompanying drawings. Note that the present invention is not limited to the following embodiment.

[0011] [First embodiment] <Vehicle Recording Device> FIG. 1 is a block diagram showing an example of the configuration of a vehicle recording device 10 having a vehicle recording control device (hereinafter referred to as a "control device") 100 according to the first embodiment. The vehicle recording device 10 is a so-called drive recorder that records events that occur in a vehicle. When an acceleration equal to or greater than a predetermined value that is not determined as an event is detected before an operation to record an event is accepted, the vehicle recording device 10 generates and stores event data from video data going back a longer period compared to when an acceleration equal to or greater than a predetermined value that is not determined as an event is not detected before an operation to record an event is accepted.

[0012] The vehicular recording device 10 may be a device installed in the vehicle, or may be a portable device that can be used in the vehicle. The vehicular recording device 10 may be realized by including the functions or configurations of a device that is pre-installed in the vehicle, a navigation device, etc. The vehicular recording device 10 includes a camera 211, a recording unit 212, an operation unit 213, an acceleration sensor 214, a GNSS (Global Navigation Satellite System) receiving unit 215, a display unit 216, and the control device 100.

[0013] The camera 211 is a camera that captures the surroundings of the vehicle. The camera 211 may be a group of multiple cameras. The camera 211 is arranged, for example, at a position in the front of the vehicle interior where it can capture the view ahead of the vehicle. In this embodiment, the camera 211 captures video at all times while the accessory power of the vehicle is ON. The camera 211 outputs the captured video data to the captured data acquisition unit 111 of the control device 100. The video data is, for example, a moving image composed of images of 27.5 frames per second.

[0014] The recording unit 212 is used for temporary storage of data in the vehicle recording device 10. The recording unit 212 is, for example, a recording unit such as a semiconductor memory element such as a random access memory (RAM) or a flash memory, or a memory card. Alternatively, the recording unit 212 may be an external recording unit wirelessly connected via a communication device (not shown). The recording unit 212 records the loop recorded video data or the event data based on a control signal output from the recording control unit 122 of the control device 100.

[0015] The operation unit 213 can accept various operations for the vehicular recording device 10. The operation unit 213 is, for example, a touch panel arranged over the display screen of the display unit 216. The operation unit 213 may be, for example, a microphone that picks up voice commands uttered by the user. For example, the operation unit 213 can accept an operation to manually save the captured video data as event data in the recording unit 212. For example, the operation unit 213 can accept an operation to play the loop recorded video data or event data recorded in the recording unit 212. For example, the operation unit 213 can accept an operation to erase the event data recorded in the recording unit 212. For example, the operation unit 213 can accept an operation to end the loop recording. The operation unit 213 outputs operation information to the operation control unit 116 of the control device 100.

[0016] The acceleration sensor 214 is a sensor that detects acceleration occurring with respect to the vehicle. The acceleration sensor 214 outputs a detection result to the event detection unit 117 of the control device 100. The acceleration sensor 214 is a sensor that detects acceleration in, for example, three axial directions. The three axial directions are the forward / rearward direction, the left / right direction, and the up / down direction of the vehicle.

[0017] The GNSS receiving unit 215 is configured with a GNSS receiver that receives GNSS signals from GNSS satellites, etc. The GNSS receiving unit 215 outputs the received position information signal to the position information acquisition unit 118 of the control device 100.

[0018] The display unit 216 is, for example, a display device specific to the vehicular recording device 10, or a display device shared with other systems including a navigation system. The display unit 216 may be formed integrally with the camera 211. The display unit 216 is, for example, a display including a liquid crystal display or an organic EL (Electro-Luminescence) display. In this embodiment, the display unit 216 is disposed in front of the driver of the vehicle on a dashboard, an instrument panel, a center console, or the like. The display unit 216 displays an image based on a video signal output from the display control unit 119 of the control device 100. The display unit 216 displays an image captured by the camera 211 or an image recorded in the recording unit 212.

[0019] <Vehicle Recording Control Device> The control device 100 is an arithmetic processing device (control device) configured with, for example, a CPU (Central Processing Unit) and the like. The control device 100 loads a stored program into a memory and executes instructions included in the program. The control device 100 includes an internal memory (not shown), which is used for temporary storage of data in the control device 100, and the like. The control device 100 has, as its configuration and functions realized by the program, an image data acquisition unit 111, a buffer memory 112, an image data processing unit 113, an operation control unit 116, an event detection unit 117, a position information acquisition unit 118, a display control unit 119, a playback control unit 121, and a recording control unit 122.

[0020] The image data acquisition unit 111 acquires image data of the surroundings captured by the camera 211 that captures the surroundings of the vehicle. The image data acquisition unit 111 outputs the acquired image data to the buffer memory 112.

[0021] The buffer memory 112 is an internal memory included in the control device 100, and is a memory for temporarily recording a certain period of video data acquired by the image capture data acquisition unit 111 while updating it.

[0022] The image capturing data processing unit 113 converts the video data temporarily stored in the buffer memory 112 into an arbitrary file format, such as MP4 format, encoded with an arbitrary codec, such as H.264 or MPEG-4 (Moving Picture Experts Group). The image capturing data processing unit 113 generates video data as a file for a certain period of time from the video data temporarily stored in the buffer memory 112. As a specific example, the image capturing data processing unit 113 generates 60 seconds of video data as a file in the order of recording from the video data temporarily stored in the buffer memory 112. The image capturing data processing unit 113 outputs the generated video data to the recording control unit 122. The image capturing data processing unit 113 also outputs the generated video data to the display control unit 119 after decoding the image through the playback control unit 121. The period of the video data generated as a file is set to 60 seconds as an example, but is not limited to this. The video data referred to here may be data including audio in addition to the video captured by the camera 211.

[0023] The operation control unit 116 acquires operation information of an operation accepted by the operation unit 213. For example, the operation control unit 116 acquires save operation information indicating a manual save operation of video data, play operation information indicating a play operation, or delete operation information indicating a delete operation of video data, and outputs a control signal. For example, the operation control unit 116 acquires end operation information indicating an operation to end loop recording, and outputs a control signal. For example, the operation control unit 116 accepts an event recording operation by a user operation. The event recording operation by a user operation accepted by the operation control unit 116 is, for example, an event recording operation instructed by operating a touch panel or the like, or an event recording operation instructed by inputting a voice command.

[0024] The event detection unit 117 detects an event based on the acceleration applied to the vehicle. More specifically, the event detection unit 117 detects an event based on the detection result of the acceleration sensor 214. The event detection unit 117 detects that an event has occurred when the acceleration information acquired by the event detection unit 117 from the acceleration sensor 214 is equal to or greater than a threshold value.

[0025] The position information acquisition unit 118 acquires position information indicating the current position of the vehicle. The position information acquisition unit 118 calculates the position information of the current position of the vehicle based on the GNSS signal received by the GNSS receiving unit 215 by a known method.

[0026] The display control unit 119 controls the display of video data on the display unit 216. The display control unit 119 outputs a video signal that causes the video data to be output to the display unit 216. More specifically, the display control unit 119 outputs a video signal that displays the video captured by the camera 211, or the loop recorded video data or event data recorded in the recording unit 212 by playing back the video.

[0027] The playback control unit 121 performs control so as to play back the loop recorded video data or event data recorded in the recording unit 212, based on a playback operation control signal output from the operation control unit 116. The playback control unit 121 includes a decoder (not shown), and plays back various types of data by decoding the compressed data supplied thereto.

[0028] The recording control unit 122 controls the recording unit 212 to record the video data filed by the image capture data processing unit 113. During a period in which the loop recording process is being performed, such as when the vehicle accessory power source is ON, the recording control unit 122 records the video data filed by the image capture data processing unit 113 as overwritable video data in the recording unit 212. More specifically, during a period in which the loop recording process is being performed, the recording control unit 122 continues to record the video data generated by the image capture data processing unit 113 in the recording unit 212, and when the capacity of the recording unit 212 becomes full, the recording control unit 122 overwrites the oldest video data with new video data and records it.

[0029] When an event is detected by the event detection unit 117, the recording control unit 122 stores video data corresponding to the detection of the event. The video data corresponding to the detection of the event is video data for a predetermined period in the video data generated by the shooting data processing unit 113. The recording control unit 122 stores the video data corresponding to the detection of the event in the recording unit 212 as event data that is prohibited from being overwritten. When an event is detected by the event detection unit 117, the recording control unit 122 copies video data for a predetermined period of about 10 seconds before and after the time point at which the event is detected (hereinafter referred to as the "event detection time point") from the buffer memory 112 and stores the video data as event data. For example, the recording control unit 122 generates and stores event data from video data from a time point going back a first retroactive period P1 from the event detection time point to a time point after a first elapsed period P1' from the event detection time point.

[0030] The recording control unit 122 records the video data acquired by the photographing data acquisition unit 111, and when the operation control unit 116 accepts an operation for recording an event, if an acceleration equal to or greater than a predetermined value that the event detection unit 117 does not judge as an event is detected within a predetermined period prior to the operation acceptance time when the operation for recording an event is accepted by a manual operation by the user or an operation by a voice command (hereinafter referred to as an "event operation acceptance time"), the recording control unit 122 generates and stores event data going back a longer period from the video data compared to when an acceleration equal to or greater than a predetermined value that the event detection unit 117 does not judge as an event is not detected within a predetermined period prior to the event operation acceptance time. More specifically, the recording control unit 122 records the video data acquired by the photographing data acquisition unit 111, and when an acceleration equal to or greater than a predetermined value that the event detection unit 117 does not judge as an event is detected within a predetermined period prior to the event operation acceptance time, the recording control unit 122 generates and stores event data going back a longer period from the video data compared to when an acceleration equal to or greater than a predetermined value that the event detection unit 117 does not judge as an event is not detected within a predetermined period prior to the event operation acceptance time.

[0031] An acceleration equal to or greater than a predetermined value that is not judged as an event is an acceleration that is less than the acceleration detected as an event. For example, when a detected acceleration of 1.0 G is judged as an event, an acceleration equal to or greater than a predetermined value that is not judged as an event is an acceleration between 0.5 G and less than 1.0 G. Specifically, it is a state in which an acceleration equal to or greater than a predetermined value is applied, such as a collision between a vehicle and an object or sudden braking, but is less than the acceleration that is judged as an event.

[0032] The predetermined period is, for example, 30 to 120 seconds.

[0033] When the operation control unit 116 detects an acceleration of a predetermined value or more that is not determined as an event within a predetermined period before the event operation reception time, the recording control unit 122 generates and stores event data going back a longer period from the video data compared to when acceleration of a predetermined value or more that is not determined as an event is not detected within a predetermined period before the event operation reception time. In other words, when acceleration of a predetermined value or more that is not determined as an event is detected within a predetermined period before the event operation reception time, the recording control unit 122 stores event data for a longer period compared to when acceleration of a predetermined value or more that is not determined as an event is not detected within a predetermined period before the event operation reception time.

[0034] In this embodiment, when the acceleration equal to or greater than a predetermined value that is not determined as an event by the event detection unit 117 is detected within a predetermined period before the recording control unit 122 receives an event recording operation, the recording control unit 122 generates and stores event data in which the second retrospective period P2 from the time point when the event recording operation is received is longer than the first retrospective period P1 from the time point when the event recording operation is received in the case where the acceleration equal to or greater than a predetermined value that is not determined as an event by the event detection unit 117 is not detected within a predetermined period before the recording control unit 122 receives an event recording operation. More specifically, when the acceleration equal to or greater than a predetermined value that is not determined as an event is detected within a predetermined period before the event operation reception time point, the recording control unit 122 stores event data in which the second retrospective period P2 (P1 < P2) from the event operation reception time point is longer than the first retrospective period P1 from the event detection time point as compared with the case where the acceleration equal to or greater than a predetermined value that is not determined as an event is not detected within a predetermined period before the event operation reception time point. For example, the recording control unit 122 generates and stores event data from the video data between the time point retrogressed by the second retrospective period P2 from the event operation reception time point and the time point after the second elapsed period P2´ (P1´ = P2´) from the event operation reception time point.

[0035] FIG. 2 is a diagram showing an example of a recording period of event data. During the period in which the loop recording process is performed, the video data generated by the photographing data processing unit 113 is continuously recorded as loop recording video data. The period of event data generated by an event recording operation when acceleration equal to or greater than a predetermined value that is not determined as an event is not detected within a predetermined period before the event operation reception time is between a point going back a first retroactive period P1 from the event operation reception time to a point after a first elapsed period P1' from the event operation reception time. The period of event data generated by an event recording operation when acceleration equal to or greater than a predetermined value that is not determined as an event is detected within a predetermined period before the event operation reception time is between a point going back a second retroactive period P2 from the event operation reception time to a point after a second elapsed period P2' from the event operation reception time. The period of event data generated by an event recording operation when acceleration equal to or greater than a predetermined value that is not determined as an event is detected within a predetermined period before the event operation reception time is longer than the period of event data generated by an event recording operation when acceleration equal to or greater than a predetermined value that is not determined as an event is not detected within a predetermined period before the event operation reception time. For example, when the first retroactive period P1 is 10 seconds, the second retroactive period P2 is set to 15 to 20 seconds, etc. Furthermore, the first elapsed period P1' and the second elapsed period P2' are set to 10 seconds, etc.

[0036] <Information processing in a vehicle recording control device> Next, the flow of processing in the control device 100 will be described with reference to Fig. 3. While the vehicular recording device 10 is running, the processing of the flowchart shown in Fig. 3 is executed.

[0037] The control device 100 starts loop recording (step S201). More specifically, the captured data processing unit 113 starts loop recording. The control device 100 also starts event detection. The start of event detection is detection of acceleration by the acceleration sensor 214 at a set acceleration threshold value by the event detection unit 117, and detection of acceptance of an event recording operation by the operation control unit 116. The control device 100 proceeds to step S202.

[0038] The control device 100 judges whether or not an event has been detected based on the detection result by the event detection unit 117 (step S202). If the acceleration detected by the event detection unit 117 is equal to or greater than a threshold, the control device 100 judges that an event has been detected (Yes in step S202) and proceeds to step S203. Alternatively, if the event detection unit 117 judges that the acceleration detected is not equal to or greater than the threshold, the control device 100 judges that an event has not been detected (No in step S202) and proceeds to step S204.

[0039] If it is determined that an event has been detected (Yes in step S202), the recording control unit 122 generates and stores event data going back a first retroactive period P1 from the event detection time point (step S203). More specifically, the recording control unit 122 causes the recording unit 212 to store, as event data, video data captured during the period from the time point going back a first retroactive period P1 from the event detection time point to the time point after a first elapsed period P1' from the event detection time point, while prohibiting overwriting. The control device 100 proceeds to step S208.

[0040] If it is not determined that an event has been detected (No in step S202), it is determined whether or not an operation to record an event has been accepted (step S204). If the operation control unit 116 determines that an operation to record an event by a user operation has been accepted (Yes in step S204), the process proceeds to step S205. If the operation control unit 116 does not determine that an operation to record an event by a user operation has been accepted (No in step S204), the process proceeds to step S208.

[0041] When it is determined that the event record operation has been received (Yes in step S204), the control device 100 determines whether or not an acceleration equal to or greater than a predetermined value that is not an event has been detected within a predetermined period before the event record operation has been received (step S205). More specifically, the control device 100 determines whether or not an acceleration equal to or greater than a predetermined value that is not an event has been detected within a predetermined period before the event record operation has been received. When the control device 100 determines that an acceleration equal to or greater than a predetermined value that is not an event has been detected within a predetermined period before the event record operation has been received (Yes in step S205), the control device 100 proceeds to step S206. When the control device 100 does not determine that an acceleration equal to or greater than a predetermined value that is not an event has been detected within a predetermined period before the event record operation has been received (No in step S205), the control device 100 proceeds to step S207.

[0042] When it is determined that an acceleration equal to or greater than a predetermined value that is not an event has been detected within a predetermined period before the event record operation is accepted (Yes in step S205), the recording control unit 122 generates and stores event data going back a second retroactive period P2 from the time of the event record operation (step S206). More specifically, the recording control unit 122 causes the recording unit 212 to store, as event data, the video data captured during the period from the time going back the second retroactive period P2 from the time of the event operation acceptance to the time after the second elapsed period P2' from the time of the event operation acceptance, while prohibiting overwriting. The control device 100 proceeds to step S208.

[0043] If it is not determined that an acceleration equal to or greater than a predetermined value that is not an event has been detected within a predetermined period before the event record operation is accepted (No in step S205), the recording control unit 122 generates and stores event data going back a first retroactive period P1 from the time of the event record operation (step S207). More specifically, the recording control unit 122 causes the recording unit 212 to store, as event data, the video data captured during the period from the time going back a first retroactive period P1 from the time of the event operation acceptance to the time after the first elapsed period P1' from the time of the event operation acceptance, while prohibiting overwriting. The control device 100 proceeds to step S208.

[0044] The control device 100 determines whether or not to end the loop recording (step S208). For example, the control device 100 determines to end the loop recording when the power or motive power of the vehicle is turned off or the operation unit 213 is operated. If the control device 100 determines to end the loop recording (Yes in step S208), it ends this process. If the control device 100 does not determine to end the loop recording (No in step S208), it executes the process of step S202 again.

[0045] <Effects> As described above, in this embodiment, when an operation for recording an event is received, if an acceleration equal to or greater than a predetermined value that is not determined as an event is detected within a predetermined period prior to the reception of the event operation, event data going back a longer period can be generated from video data and saved, compared to a case where an acceleration equal to or greater than a predetermined value that is not determined as an event is not detected within a predetermined period prior to the reception of the event operation. According to this embodiment, when a user is unable to promptly give an instruction for recording an event, and there is a time lag between the occurrence of an event that the user wishes to save as event data and the operation, it is possible to prevent an event from not being properly recorded in the recorded event data. In this way, according to this embodiment, it is possible to properly record an event.

[0046] In this embodiment, event data can be generated from video data and saved such that a second retroactive period P2 from the time point at which the event operation is received when acceleration equal to or greater than a predetermined value that is not determined to be an event is detected within a predetermined period prior to the time point at which the event operation is received is longer than a first retroactive period P1 from the time point at which the event is recorded when acceleration equal to or greater than a predetermined value that is not determined to be an event is not detected within a predetermined period prior to the time point at which the event operation is received.

[0047] [Second embodiment] The vehicle recording device 10 according to this embodiment will be described with reference to Figs. 4 and 5. Fig. 4 is a diagram showing another example of the recording period of event data. Fig. 5 is a flowchart showing an example of the flow of processing in the control device according to the second embodiment. The basic configuration of the vehicle recording device 10 is similar to that of the vehicle recording device 10 of the first embodiment. In the following description, components similar to those of the vehicle recording device 10 are given the same or corresponding reference numerals, and detailed description thereof will be omitted. In this embodiment, the processing in the recording control unit 122 differs from that of the first embodiment.

[0048] If no acceleration of a predetermined value or more that event detection unit 117 does not determine as an event is detected within a predetermined period before receiving the operation to record the event, recording control unit 122 sets the time when the operation to record the event is received as a second starting point and saves the video data for a predetermined period before and after the second starting point as event data.If acceleration of a predetermined value or more that event detection unit 117 does not determine as an event is detected within a predetermined period before receiving the operation to record the event, recording control unit 122 sets the time when acceleration of a predetermined value or more that event detection unit 117 does not determine as an event as a third starting point and generates and saves event data from the video data for a predetermined period before and after the third starting point.

[0049] The recording period of the event data will be described with reference to FIG. 4. The period of the event data when acceleration equal to or greater than a predetermined value that is not determined as an event is not detected within a predetermined period before the event operation reception time is a predetermined period before and after the second starting point, with the event operation reception time as the second starting point. Specifically, it is a period from a point going back from the second starting point by the first retroactive period P1 to a point after the first elapsed period P1' has elapsed from the second starting point. The period of the event data when acceleration equal to or greater than a predetermined value that is not determined as an event is detected within a predetermined period before the event operation reception time is a predetermined period before and after the third starting point, with the point of time when acceleration equal to or greater than a predetermined value that is not determined as an event is detected as the third starting point. Specifically, it is a period from a point going back from the third starting point by the third retroactive period P3 to a point after the third elapsed period P3' has elapsed from the third starting point. For example, the third retroactive period P3 and the third elapsed period P3' are set to 15 seconds to 20 seconds, etc. The second retroactive period P2 and the second elapsed period P2' are the same as those in the first embodiment.

[0050] Next, the flow of processing in the control device 100 will be described with reference to Fig. 5. The processing in steps S211 to S215 and step S218 is similar to the processing in steps S201 to S205 and step S208 in the flowchart shown in Fig. 3.

[0051] When it is determined that an acceleration equal to or greater than a predetermined value that is not an event was detected within a predetermined period before the event recording operation was accepted (Yes in step S215), the recording control unit 122 stores video of a predetermined period before and after the third starting point, which is the time point at which an acceleration equal to or greater than a predetermined value that is not an event was detected, as event data (step S216). More specifically, the recording control unit 122 generates event data from video data captured during the period from a point going back a third retroactive period P3 from the third starting point to a point after a third elapsed period P3' from the third starting point, and stores the event data in the recording unit 212. The control device 100 proceeds to step S218.

[0052] If it is not determined that an acceleration equal to or greater than a predetermined value that is not an event has been detected within a predetermined period before the event recording operation was accepted (No in step S215), the recording control unit 122 stores video images of a predetermined period before and after the second base point, which is the time of the event recording operation, as event data (step S217). More specifically, the recording control unit 122 causes the recording unit 212 to store, as event data, video data captured during the period from a point going back a second retrospective period P2 from the second base point to a point after a second elapsed period P2' from the second base point. The control device 100 proceeds to step S218.

[0053] As described above, in this embodiment, if acceleration equal to or greater than a predetermined value that does not result in an event being detected within a predetermined period prior to the time the event operation is received, the time point at which the event operation is received is set as a second starting point, and video data for a predetermined period before and after the second starting point is saved as event data. If acceleration equal to or greater than a predetermined value that does not result in an event is detected within a predetermined period prior to the time the event operation is received, the time point at which acceleration equal to or greater than a predetermined value that does not result in an event being detected is set as a third starting point, and event data can be generated and saved from video data for a predetermined period before and after the third starting point.

[0054] The vehicular recording device 10 according to the present disclosure may be embodied in various different forms other than the above-described embodiment.

[0055] Each component of the illustrated vehicular recording device 10 is a functional concept, and does not necessarily have to be physically configured as illustrated. In other words, the specific form of each device is not limited to that shown in the figure, and all or part of the devices may be functionally or physically distributed or integrated in any unit depending on the processing load and usage status of each device.

[0056] The configuration of the vehicle recording device 10 is realized, for example, as software by a program loaded into a memory. In the above embodiment, the functional blocks are described as being realized by the cooperation of these hardware and software. In other words, these functional blocks can be realized in various forms by only hardware, only software, or a combination of both.

[0057] The above-mentioned components include those that a person skilled in the art can easily imagine and those that are substantially the same. Furthermore, the above-mentioned configurations can be appropriately combined. Furthermore, various omissions, substitutions, or modifications of the configurations are possible without departing from the scope of the present invention. [Explanation of symbols]

[0058] 10 Vehicle Recording Device 100 Control device (vehicle recording control device) 111 Shooting data acquisition section 112 Buffer Memory 113 Shooting data processing section 116 Operation control section 117 Event detection unit 118 Location information acquisition unit 119 Display control section 121 Playback control section 122 Recording control section 211 Camera 212 Recording Department 213 Operation section 214 Acceleration Sensor 215 GNSS receiver 216 Display section P1 First retrospective period P1´ First Transition Period P2 Second retroactive period P2´ Second Transition Period P3 Third retroactive period P3´ Third Transition Period

Claims

1. a photographic data acquisition unit that acquires video data captured by a camera that captures images of the periphery of the vehicle; an event detection unit that detects an event based on acceleration applied to the vehicle; an operation control unit that accepts an event recording operation by a user; a recording control unit that records the video data acquired by the shooting data acquisition unit, and when the operation control unit receives an operation to record an event, if acceleration equal to or greater than a predetermined value that the event detection unit does not determine as an event is detected before the operation to record the event, goes back a longer period than when acceleration equal to or greater than the predetermined value that the event detection unit does not determine as an event is detected before the operation to record the event, and generates and stores event data from the video data for a period including the time when acceleration equal to or greater than the predetermined value that the event detection unit does not determine as an event is detected; A recording control device for a vehicle comprising:

2. the recording control unit generates and stores event data from the video data, such that a second retroactive period from the time of receiving the event recording operation in a case where acceleration equal to or greater than a predetermined value that the event detection unit does not determine as an event is detected before receiving the event recording operation is longer than a first retroactive period from the time of receiving the event recording operation in a case where acceleration equal to or greater than a predetermined value that the event detection unit does not determine as an event is detected before receiving the event recording operation; The recording control device for a vehicle according to claim 1.

3. When an acceleration equal to or greater than a predetermined value that the event detection unit does not determine as an event is not detected before an operation to record an event is accepted, the recording control unit sets the time when the operation to record the event is accepted as a second starting point and saves video data for a predetermined period before and after the second starting point as event data; when an acceleration equal to or greater than a predetermined value that the event detection unit does not determine as an event is detected before an operation to record an event is accepted, the recording control unit sets the time when the acceleration equal to or greater than a predetermined value that the event detection unit does not determine as an event is detected as a third starting point and generates and saves event data from video data for a predetermined period before and after the third starting point. The recording control device for a vehicle according to claim 1.

4. When the event detection unit detects an event, the recording control unit generates and stores event data from the video data going back a first retroactive period from the time the event was detected.

4. The recording control device for a vehicle according to claim 2 or 3.

5. a photographed data acquisition step of acquiring video data photographed by a camera photographing the periphery of the vehicle; an event detection step of detecting an event based on acceleration applied to the vehicle; an operation control step of accepting an event recording operation by a user operation; a recording control step of recording the video data acquired by the photographing data acquisition step, and when an operation to record an event is accepted by the operation control step, if an acceleration equal to or greater than a predetermined value that is not determined to be an event is detected by the event detection step before the operation to record the event, going back a longer period than when an acceleration equal to or greater than the predetermined value that is not determined to be an event is detected by the event detection step before the operation to record the event, and generating and saving event data from the video data for a period including the time when an acceleration equal to or greater than the predetermined value that is not determined to be an event is detected by the event detection step; The recording control method is executed by a vehicle recording control device.

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