JP2023107812A - Recording/reproducing control device recording/reproducing control method - Google Patents

Abstract

To allow a user to properly refer to event recording data that the user often neglects or misses.SOLUTION: A recording/reproducing control device includes an imaging data acquisition unit that acquires imaging data captured by a camera that images around a vehicle, an event detection unit that detects an event for the vehicle, a recording control unit that stores the imaging data for a first period based on detection of the event as event recording data, a vehicle information acquisition unit that acquires on-information or off-information of power of the vehicle, and an output control unit that when the number of event recording data relating to the event before a time of on or off of the power is a predetermined number or more, outputs the event recording data for the first period, and when the number of event recording data relating to the event before a time of on or off of the power is less than the predetermined number, outputs the event recording data for a second period shorter than the first period.SELECTED DRAWING: Figure 1

Description

The present invention relates to a recording/playback control device and a recording/playback control method.

In addition to events corresponding to accidents, some drive recorders detect so-called near-miss situations, which are not accidents, and store them as event record data.

For example, Patent Literature 1 discloses a drive recorder that records and reproduces potential dangers such as near misses.

JP 2017-175220 A

Event record data that records non-accidental near-miss situations is rarely referred to by the driver, but it is useful for the driver to refer to it for safe driving. In addition, event record data recorded while the vehicle is parked in the absence of the driver may not be noticed that the event has occurred when parking is finished and the vehicle is started to be used. Therefore, even with the technique described in Patent Document 1, if the reproduction of event recording data is left to the user, there is a possibility that the event recording data cannot be used effectively. In addition, there is a possibility that an event that is actually an accident but is not noticed by the driver may be left unattended.

An object of the present invention is to provide a recording/reproducing control device, a recording/reproducing control system, a recording/reproducing control method, and a recording/reproducing control program that allow a user to refer appropriately to event recorded data that tends to be neglected or overlooked. do.

A recording/playback control apparatus of the present invention includes a photographed data acquisition unit that acquires photographed data photographed by a camera that photographs the surroundings of a vehicle, an event detection unit that detects an event with respect to the vehicle, and the event detection unit that detects the event. a recording control unit for storing, as event recording data, photographed data for a first period based on detection of an event; a vehicle information acquisition unit for acquiring ON information or OFF information of power of the vehicle; and the vehicle information acquisition unit. When the unit obtains the power-on information or power-off information of the vehicle, if the number of event record data relating to an event that occurred before the power was turned on or off is equal to or greater than a predetermined number, the event record data is transferred to the second output for one period, and output the event record data for a second period that is shorter than the first period if the number of event record data relating to an event that occurred before the time when the power was turned on or off is less than a predetermined number; and an output control unit.

A recording/playback control device according to another aspect of the present invention includes a photographed data acquisition unit that acquires photographed data captured by a camera that photographs the surroundings of a vehicle, and an event detection unit that detects an event based on acceleration applied to the vehicle. a recording control unit for storing photographed data of a first period based on event detection as event record data when the event detection unit detects an event; When the information acquisition unit and the vehicle information acquisition unit acquire the power ON information or OFF information of the vehicle, the acceleration at the time of event detection in the event record data related to the event that occurred before the power ON or OFF time. If the acceleration rises sharply, the event record data is output for the first period, and the acceleration at the time of event detection of the event record data related to the event that occurred before the power is turned on or off is the acceleration that rises slowly. , an output control unit that outputs the event recording data for a second period that is shorter than the first period.

A recording/playback control method of the present invention includes a photographed data acquisition step of acquiring photographed data photographed by a camera that photographs the surroundings of a vehicle, an event detection step of detecting an event to the vehicle, and an event detected in the event detection step. a recording control step of storing photographed data of a first period based on event detection as event recording data; a vehicle information obtaining step of obtaining ON information or OFF information of the power of the vehicle; and the vehicle information obtaining step. When the vehicle power ON information or power OFF information is acquired in the step, if the number of event record data relating to an event that occurred before the power ON or OFF time point is equal to or greater than a predetermined number, the event record data is transferred to the above-mentioned third step. output for one period, and output the event record data for a second period that is shorter than the first period if the number of event record data relating to an event that occurred before the time when the power was turned on or off is less than a predetermined number; and an output control step are performed by the recording/playback control device.

A recording/playback control method according to another aspect of the present invention includes a photographed data acquisition step of acquiring photographed data captured by a camera that photographs the surroundings of a vehicle, and an event detection step of detecting an event based on acceleration applied to the vehicle. a record control step of storing, as event record data, photographed data of a first period based on event detection when an event is detected in the event detection step; an information acquisition step, and when the vehicle power ON information or OFF information is acquired in the vehicle information acquisition step, an acceleration at the time of event detection in event record data relating to an event occurring before the power ON or OFF time point is obtained. If the acceleration rises sharply, the event record data is output for the first period, and the acceleration at the time of event detection of the event record data related to the event that occurred before the power is turned on or off is the acceleration that rises slowly. , the recording/playback control device executes an output control step of outputting the event record data for a second period shorter than the first period.

According to the present invention, it is possible to appropriately refer to event record data that a user tends to neglect or overlook.

FIG. 1 is a block diagram showing the configuration of a recording/reproducing control system according to the first embodiment of the present invention. FIG. 2 is a diagram for explaining an example of additional information associated with event record data. FIG. 3 is a diagram for explaining the reproduction period of event record data. FIG. 4 is a diagram for explaining the reproduction period of event record data. FIG. 5 is a flow chart showing an example of the processing flow of the recording/playback control device according to the first embodiment of the present invention. FIG. 6 is a flow chart showing an example of the processing flow of the recording/playback control device according to the second embodiment of the present invention. FIG. 7 is a flow chart showing an example of the processing flow of the recording/playback control device according to the third embodiment of the present invention. FIG. 8 is a flow chart showing an example of the processing flow of the recording/playback control device according to the fourth embodiment of the present invention.

DETAILED DESCRIPTION OF THE INVENTION Embodiments according to the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that the present invention is not limited by this embodiment, and when there are a plurality of embodiments, a combination of each embodiment is also included.
[First embodiment]
A configuration of a recording/reproducing control system according to an embodiment of the present invention will be described with reference to FIG. FIG. 1 is a block diagram showing the configuration of a recording/reproducing control system according to an embodiment of the present invention.

As shown in FIG. 1, the recording/playback control system 1 includes a camera 10, a microphone 20, a storage unit 30, an operation unit 40, a display unit 50, a sensor unit 60, a GPS receiving unit 70, and a communication unit. 80 , a battery 90 , and a recording/playback control device 100 . Such a recording/playback control system 1 can be applied to, for example, a drive recorder mounted on a vehicle.

A camera 10 captures an image around the own vehicle. The camera 10, for example, captures an image of the surroundings of the own vehicle while it is running and parked. The camera 10 captures, for example, an image in front of the own vehicle. The camera 10 may add information such as a time stamp and latitude/longitude information to the captured video data so that the date and time and location of the captured image can be identified. The camera 10 can be realized by, for example, a camera mounted on a drive recorder. The camera 10 outputs captured video data to the captured data acquisition unit 121 .

The microphone 20 detects sounds inside and outside the own vehicle. The microphone 20 acquires, for example, vehicle collision sounds and human voices in a traffic accident that has occurred around the own vehicle. The microphone 20 may add time-related information, such as a time stamp, to the detected audio data so that the date and time of detection can be identified. Microphone 20 can be realized by a general microphone. The microphone 20 outputs the acquired voice to the voice data acquiring section 122 .

The storage unit 30 stores, for example, programs for realizing each unit of the recording/playback control device 100 . The storage unit 30 is realized by, for example, a semiconductor memory device such as RAM (Random Access Memory), ROM (Read Only Memory), flash memory, or a storage device such as a hard disk, solid state drive, or optical disk. can be done. The storage unit 30 may be composed of a plurality of different memories or the like. The storage unit 30 stores, for example, map information 32 and a recognition dictionary 33, and stores event record data 31 when an event is detected. Event recording data may be stored as overwrite-protected data. When the photographed data photographed by the camera 10 is constantly recorded, the storage unit 30 records the constantly recorded photographed data so as to be overwritable. Further, the map information 32 may use map information stored in a navigation device or another device.

The event recording data 31 is shooting data saved based on the detected event. Specifically, the event recording data 31 is, for example, photographed data that is stored when an event is determined based on the acceleration applied to the host vehicle. In addition, the event record data 31 is not limited to an event based on the acceleration applied to the own vehicle, and may be photographed data or the like stored based on the proximity of another vehicle or person to the own vehicle.

The map information 32 is, for example, information including information about roads and facilities.

The recognition dictionary 33 is dictionary data for the recording/playback control device 100 to recognize various objects included in video data. That is, the recording/playback control device 100 uses the recognition dictionary 33 to detect various objects from the video data. Specifically, the recording/playback control device 100 detects various objects included in the video data by comparing the shape data included in the recognition dictionary 33 with the shapes of the objects included in the video data. The recording/playback control device 100 uses, for example, the recognition dictionary 33 to recognize vehicles and people included in the video data. Note that the method by which the recording/reproducing control device 100 detects another vehicle is not limited to this. The recording/playback control device 100 may detect objects using other well-known methods.

The operation unit 40 receives various operations from the user on the recording/playback control device 100 . The operation unit 40 can be realized by, for example, physical operation means, a touch panel provided on the display unit 50, a remote control device, or the like.

The display unit 50 displays various images. The display unit 50 displays the reproduced event record data 31 when the output control unit 125 outputs, that is, reproduces, the event record data 31 stored in the storage unit 30, for example. The display unit 50 is a display including, for example, a liquid crystal display (LCD) or an organic EL (Organic Electro-Luminescence) display. In addition, the display part 50 is not limited to these.

The sensor unit 60 detects various types of information about the own vehicle. The sensor unit 60 is, for example, an acceleration sensor, and detects acceleration applied to the host vehicle. The sensor unit 60 is, for example, a gyro sensor, and detects information regarding the attitude of the host vehicle. The sensor section 60 outputs the detection result to the event detection section 128 .

The GPS receiving section 70 is composed of a GPS receiving circuit, a GPS receiving antenna, etc., and receives GPS signals. GPS receiver 70 outputs the received GPS signal to current position calculator 129 .

The communication unit 80 performs information communication with an external information processing device via a wired or wireless network (not shown). The communication unit 80 performs information communication, for example, between the recording/playback control device 100 and a terminal device owned by a user (for example, a driver). Specifically, the communication unit 80 transmits the event record data 31 output by the output control unit 125 to the terminal device owned by the user. Here, as a terminal device, a PC (Personal Computer), a smart phone, a tablet terminal, and the like can be cited, but the terminal device is not limited to these.

A battery 90 is a power source for operating the recording/reproducing control system 1 . For example, the recording/reproducing control system 1 is supplied with electric power from the own vehicle when the power of the own vehicle is on. Here, when the power of the host vehicle is on, the battery 90 is charged by supplying electric power to the battery 90 . The battery 90 supplies electric power to the recording/reproducing control system 1 when the power of the vehicle is off. Note that the recording/reproducing control system 1 does not necessarily need to provide the battery 90 if power can be secured by a method other than the battery 90 when the power of the host vehicle is off.

The recording/playback control device 100 is mounted on the own vehicle and controls functions of the recording/playback control system 1 such as playback of event record data 31 including event detection. The recording/playback control device 100 includes a photographed data acquisition unit 121, an audio data acquisition unit 122, a vehicle information acquisition unit 123, a storage control unit 124, an output control unit 125, an operation control unit 126, and a display control unit 127. , an event detector 128 , and a current position calculator 129 . A photographed data acquisition unit 121, an audio data acquisition unit 122, a vehicle information acquisition unit 123, a memory control unit 124, an output control unit 125, an operation control unit 126, a display control unit 127, and an event detection unit 128 , and the current position calculator 129 are connected via the bus 110 . The recording/playback control device 100 can be implemented by an electronic circuit including, for example, a CPU (Central Processing Unit).

The captured data acquisition unit 121 acquires captured data from the outside. The captured data acquisition unit 121 acquires, for example, video data captured by the camera 10 from the camera 10 . Note that the imaging data acquired by the imaging data acquisition unit 121 is not limited to this.

The audio data acquisition unit 122 acquires audio data from the outside. The audio data acquisition unit 122 acquires, for example, audio data detected by the microphone 20 from the microphone 20 . Note that the audio data acquired by the audio data acquisition unit 122 is not limited to this.

Data such as the event record data 31 stored in the storage unit 30 may include audio data acquired by the audio data acquisition unit 122 in addition to video data acquired by the imaging data acquisition unit 121 . Data such as the event recording data 31 stored in the storage unit 30 will be described as photographed data regardless of the presence or absence of audio data.

The vehicle information acquisition unit 123 acquires various vehicle information related to the own vehicle. The vehicle information acquisition unit 123 acquires, as vehicle information, for example, on information or off information, which is a switching signal between an on state and an off state of the power of the host vehicle. In this case, the vehicle information acquisition unit 123 outputs a power information signal indicating ON information or OFF information to the output control unit 125, for example. The vehicle information acquisition unit 123 acquires, for example, various types of information about the own vehicle from a CAN (Controller Area Network) or the like.

The vehicle information acquisition unit 123 determines ON information or OFF information of the power of the own vehicle based on whether power is supplied from the own vehicle to the recording/reproducing control system 1 . For example, when the recording/reproducing control system 1 is connected so as to be able to supply power from an accessory power supply in the own vehicle, it is determined whether the power of the own vehicle is on or off based on the presence or absence of power supply from the accessory power supply.

For example, when receiving a signal indicating that the engine has switched from on to off, the vehicle information acquisition unit 123 determines that the power has switched from on to off, and outputs a power control signal to the output control unit 125 . In this case, the vehicle information acquisition unit 123 can determine, for example, that the position information received from the current position calculation unit 129 indicates that the vehicle is waiting at a traffic light, waiting in a traffic jam, or temporarily stopping near an intersection. , it is not necessary to output the power control signal to the output control unit 125 . In other words, the vehicle information acquiring unit 123 determines that the power of the vehicle is switched from ON to OFF when the vehicle is parked in a parking lot or the like and the driver is likely to leave the vehicle for a predetermined period of time. It means a situation. The conditions for determining that the power has switched from on to off are not limited to these.

For example, when the engine is turned on from off, the vehicle information acquisition unit 123 determines that the power is switched from off to on, and outputs a power control signal to the output control unit 125 . For example, when the accessory power supply is turned on while the engine is off, the vehicle information acquisition unit 123 determines that the power has switched from the off state to the on state, and outputs a power control signal to the output control unit 125. good. For example, when the vehicle information acquisition unit 123 detects that the driver has sat in the driver's seat or fastened the seat belt, the vehicle information acquisition unit 123 determines that the power has been switched from the off state to the on state, and outputs the power control signal to the output control unit. 125 may be output. Vehicle information acquisition section 123 does not have to output the power control signal to output control section 125, for example, when a predetermined time period has not elapsed since the power was turned off.

The vehicle information acquisition unit 123 determines that the condition for determining that the engine has switched from on to off and the condition for determining that the engine has switched from off to on are that the power supply from the accessory power supply is turned on or off, The condition may be that the current position information is set in advance. For example, by setting the home position in advance, every time the user returns home, it is possible to refer to the event record data stored during the operation period from the time the user leaves home until the time the user returns home. In addition, by presetting the position of the company and a predetermined parking lot, for example, every time a business vehicle returns to the company, the event can be saved in the operation period from the time it leaves the company to the time it returns to the company. Recorded data can be referenced.

Storage control unit 124 stores various information in storage unit 30 . The storage control unit 124 stores the imaging data acquired by the imaging data acquisition unit 121 and the audio data acquired by the audio data acquisition unit 122 in the storage unit 30 . Specifically, when an event is detected by the event detection unit 128 in the imaged data or the audio data, the storage control unit 124 stores the imaged data for a predetermined period based on the detection of the event as the event recording data 31. Save in the storage unit 30 .

More specifically, when the event detection unit 128 detects an event, the storage control unit 124 stores at least the shooting data of the first period based on the detection of the event as the event recording data 31 . Here, the first period is a predetermined period before the event is detected so as to include the event detection point in the case where constant recording is performed while the vehicle is in operation or parked, for example. It is a period that includes captured data for a period and captured data for a predetermined period after an event is detected. An example of the first time period in this case is a period of time, such as 20 seconds, consisting of 10 seconds before the event is detected and 10 seconds after the event is detected. Further, as another example of the first period, it is a period in which recording is not always performed while the vehicle is parked, and event recording data is stored as event recording data triggered by the detection of an event. An example of the first period in this case is a period of 10 seconds or the like from the start of recording when an event is detected.

The memory control unit 124 may add, to the event recording data 31, the acceleration applied to the host vehicle when the event occurs, that is, the acceleration information acquired from the sensor unit 60 by the event detection unit 128, for example.

The output control section 125 reproduces the event recording data stored in the storage section 30 to output the event recording data. The output control unit 125 starts outputting the event record data stored in the storage unit 30 by operating the operation unit 40 . Further, the output control unit 125 outputs the event record data 31 of the first period stored in the storage unit 30 according to the power control signal received from the vehicle information acquisition unit 123 . The output control unit 125 outputs the event record data 31 of the first period to the display control unit 127, for example. For example, the output control unit 125 transmits the event recording data 31 of the first period to the external terminal device through the communication unit 80 . The output control unit 125 may output the event record data 31 of the first period to both the communication unit 80 and the display control unit 127, or may output to either one of them. When outputting event record data via the communication unit 80 , the output control unit 125 includes a function as a communication control unit that controls transmission of data by the communication unit 80 and the like. For example, when the driver is commuting to work or school and the time to drive is almost fixed, the output control unit 125 outputs the event record data only when the power control signal is received at a time near the time of returning home. 31 may be output to the outside. The output control unit 125 outputs the event record data 31 to the display control unit 127 based on the map information 32, for example, for route guidance display according to the current position.

More specifically, when output control unit 125 receives a power control signal from vehicle information acquisition unit 123, output control unit 125 outputs event record data 31 regarding an event that occurred before the power was switched on or off. For example, when the output control unit 125 receives a power control signal indicating an off state from the vehicle information acquisition unit 123, the output control unit 125 outputs event record data 31 regarding an event that occurred during an operation period before the power was turned off. For example, when the output control unit 125 receives a power control signal indicating an ON state from the vehicle information acquisition unit 123, the output control unit 125 outputs event record data 31 regarding an event that occurred during the parking period before the power was turned ON. The output control unit 125 may output the event record data 31 for a second period that is shorter than the first period saved as the event record data.

When a plurality of event record data 31 are stored, the output control unit 125 may output the event record data 31 in order of magnitude of acceleration applied to the own vehicle, for example. In this case, the output control unit 125 may output a predetermined number of event record data without outputting all the event record data 31, for example. When a plurality of pieces of event record data 31 are stored, the output control unit 125 outputs event record data in which, for example, the magnitude of acceleration applied to the own vehicle exceeds a predetermined threshold value. good.

Here, the additional information associated with the event record data 31 will be described with reference to FIG. FIG. 2 is a correspondence table showing an example of additional information associated with the event record data 31. As shown in FIG.

FIG. 2 is an example of a correspondence table of event record data saved when the host vehicle is powered on, that is, during an operation period. In FIG. 2, Event No. 1, Event No. 2, . . . , Event No. Each N indicates the event record data 31 . As shown in FIG. 3, each event recording data is associated with, for example, date and time, position information, and acceleration information. Although the location information shows the name of a specific location, it may be latitude and longitude information. Event no. 1 to event number. Since event No. N has the same configuration, hereinafter event No. 1 will be described as an example.

The date and time means the time when the event was detected. Location information is information about the place where the event occurred. The acceleration information is information including the magnitude of the acceleration applied to the host vehicle and the cause of the acceleration. Causes of acceleration include situations in which a large amount of acceleration is applied, such as sudden braking and sudden acceleration. In this embodiment, the event is detected when the acceleration exceeds the first threshold, and event record data is stored.

Event no. 1 indicates that it is an event detected at "14:36:12 on September 12, 2018" when referring to the column of date and time. Event no. 1 indicates that it is an event detected in the "parking lot of store A" by referring to the position information column. Event no. 1 is associated with acceleration information 1 when referring to the column of acceleration information.

Therefore, the output control unit 125 refers to the acceleration information to specify the magnitude of the acceleration applied to the own vehicle when the event occurs. Then, for example, when the power is turned off, the output control unit 125 determines whether or not to output each event record data based on the magnitude of the specified acceleration.

For example, based on each piece of acceleration information, the output control unit 125 selects an event No. associated with acceleration information with a large acceleration. event record data may be output in order. For example, the output control unit 125 is provided with a second threshold that is larger than the first threshold that is detected as an event, and outputs only event record data associated with acceleration information that exceeds the second threshold. You may make it output.

For example, if the detected event is an event based on an accident that occurred during the operation period, and if the driver, etc., is aware of the occurrence of the event, the driver, etc., will respond to the accident. Output processing of event record data such as form is unnecessary. However, event No. shown in FIG. As in 1, when the vehicle is temporarily parked during the operation period and the driver or the like is absent from the own vehicle, the driver or the like does not notice the occurrence of the event even though the event is detected. In this case, the occurrence of the event can be known by outputting the event record data when the power of the own vehicle is turned off. In addition to sudden braking, sudden acceleration, and sudden steering, which are not accidents but so-called near misses, the event record data based on events detected based on the proximity of other vehicles or people with the possibility of contact is recorded. By outputting event record data when the power of the own vehicle is turned off, it is useful for reviewing one's own driving and grasping dangerous spots.

The reproduction period of the event recording data 31 will be described with reference to FIGS. 3 and 4. FIG. 3 and 4 are schematic diagrams for explaining the reproduction period of the event recording data 31. FIG.

FIG. 3 is a diagram showing a reproduction period of event record data saved based on an event when constant recording is performed. In FIG. 3, assuming that the event detection time is t0, the captured data in the first period from the time t0-t1, which is t1 before t0, to t0+t1, which is t1 after t0, is the event record data 31. Indicates the saved case. In this case, for example, the storage unit 30 stores, as the event recording data 31, the photographed data for each period of 10 seconds before and after the event is detected. That is, when the output control unit 125 outputs the event recording data 31 of the first period, the images of 10 seconds before and after the occurrence of the event are reproduced. Here, the output control unit 125 controls the event recording data of the first period from the time point t0-t2, which is t2 shorter than t1 than t0, to the time point t0+t2, which is t2 shorter than t1 than t0. may output the second period of In this case, the output control unit 125 outputs the event record data 31 shortened to 3 seconds before and after the event detection time, for example. In this case, video images of 3 seconds before and after the event detection are reproduced.

FIG. 4 is a diagram showing a playback period of event recording data saved by starting recording based on event detection. FIG. 4 shows a case where, when the event detection time is t0, the shooting data for the first period from t0 to t0+t1 after t1 is stored as the event record data 31. FIG. In this case, for example, the storage unit 30 stores, as the event recording data 31, the shooting data for a period of 10 seconds after the event is detected. That is, when the output control unit 125 outputs the event recording data 31 of the first period, the image of 10 seconds after the occurrence of the event is reproduced. Here, the output control unit 125 may output the second period from t0 to t0+t2, which is t2 shorter than t1, with respect to the event recording data of the first period. In this case, the output control unit 125 outputs the event record data 31 shortened to, for example, 3 seconds after the event is detected. In this case, the video is reproduced for 3 seconds after the event is detected.

The event record data is useful information for verification when an accident occurs, but if the purpose is to check when the user starts or ends driving, there is little need to check the event record data for the first period. . This is particularly noticeable when there are multiple pieces of event record data. Therefore, by outputting the event record data for the second period, it is possible to check the event record data for a necessary period including at least the event detection point. The output control unit 125 may determine whether to output the event record data 31 for the first period or the second period based on the following conditions. For example, if the number of event record data to be checked at the start or end of operation is, for example, about 1 to 2, the event record data is output for the first period, and if it is more than that, the event record data is output for the second period. Output for two periods. Alternatively, the event record data based on the acceleration when the event is detected rises sharply indicating a collision such as a hit-and-run event is output for the first period, and the acceleration compared to the collision such as sudden braking, sudden acceleration, or sudden steering is output. The event record data based on the gentle acceleration of the second period may be output.

After the output control unit 125 outputs the event record data 31, the storage control unit 124 may delete the event record data 31, or may delete the event record data 31 after storing for a predetermined period. Alternatively, the storage control unit 124 may delete the event record data 31 after receiving an operation signal from the user to delete the event record data 31, for example.

The operation control unit 126 receives, for example, an operation signal for the recording/reproducing control device 100 received by the operation unit 40 from the user. The operation control unit 126 causes the output control unit 125 to output the event record data 31 based on the operation signal, for example. The operation control unit 126 also receives an operation signal regarding an event recording instruction received by the operation unit 40 from the user. When the operation control unit 126 receives an operation signal related to an event recording instruction, the storage control unit 124 sets the time point at which the operation signal related to the event recording instruction is received as the event occurrence time point, and converts the video data including the event occurrence time point into the event recording data. 31 is stored in the storage unit 30 .

The display control section 127 displays various images on the display section 50 . The display control unit 127 displays the event record data 31 on the display unit 50 under the control of the output control unit 125, for example.

The event detection unit 128 detects an event such as an accident involving the own vehicle, for example. For example, the event detection unit 128 detects, as events, various events called near misses that are not actually accidents but could lead to accidents.

For example, when the own vehicle is running, the event detection unit 128 detects an event based on the acceleration applied to the own vehicle detected by the sensor unit 60 . In this case, the event detection unit 128 detects an event when, for example, the sensor unit 60 detects an acceleration of a predetermined magnitude or more due to sudden braking, sudden acceleration, or sudden steering.

For example, even when the vehicle is parked, the event detection unit 128 detects an event based on the acceleration applied to the vehicle detected by the sensor unit 60 . In this case, the event detection unit 128 detects as an event, for example, when another vehicle collides with the host vehicle while the vehicle is parked and a predetermined acceleration or more is applied.

For example, when the own vehicle is parked, the event detection unit 128 detects a near-miss incident based on the captured data acquired by the captured data acquisition unit 121 . In this case, the event detection unit 128 detects people around the vehicle based on the recognition dictionary 33, for example. The event detection unit 128 detects, as an event, a robbery accident or a near-miss, for example, when an object is stolen from the own vehicle or a person who is not stolen but tries to open the door is detected.

For example, when the own vehicle is running or parked, the event detection unit 128 uses the photographed data photographed by the photographed data acquisition unit, the proximity sensor as the sensor unit 60, or the like to detect other vehicles or people from the own vehicle. The event is detected when the vehicle comes close to a certain level of possibility of contact.

The event detection unit 128 may detect, for example, an accident that has occurred in another vehicle or a sudden deceleration of another vehicle as an event. The event detection unit 128 detects, as an event, a case in which sudden deceleration due to a collision or sudden braking is detected, for example, based on the movement transition of another vehicle shown in the photographed data acquired by the photographed data acquisition unit 121 . In this case, for example, the event detection unit 128 calculates acceleration based on the movement transition of the other vehicle, and detects the event as an event related to the other vehicle based on the calculated acceleration.

The current position calculator 129 acquires GPS signals from the GPS receiver 70 . The current position calculator 129 calculates the current position of the host vehicle, for example, based on GPS signals. The current position calculator 129 outputs the calculated current position to the storage controller 124, for example.

Processing of the recording/playback control device 100 according to the first embodiment will be described with reference to FIG. FIG. 5 is a flow chart showing an example of the processing flow of the recording/playback control device 100 according to the first embodiment. The process illustrated in FIG. 5 shows the process of the recording/reproducing control device 100 when the power is switched from on to off.

As shown in FIG. 5, the recording/reproducing control device 100 determines whether or not the power of the own vehicle is turned off in step S101. Specifically, based on the vehicle information of the own vehicle acquired by the vehicle information acquisition unit 123, it is determined whether or not the power of the own vehicle has been turned off.

If the power of the own vehicle is not turned off ("No" in step S101), the recording/reproducing control device 100 executes the process of step S101 until the power of the vehicle is turned off. On the other hand, when the power of the own vehicle is turned off ("Yes" in step S101), the recording/reproducing control device 100 proceeds to step S102.

In step S102, the recording/reproducing control device 100 determines whether or not an event has occurred during the power-on operation period. Specifically, the recording/playback control device 100 determines whether an event is detected by the event detection unit 148 during the operation period of the host vehicle or whether event recording data is saved during the operation period. Determine the presence or absence of occurrence.

If no event has occurred during the operation period ("No" in step S102), the recording/playback control device 100 terminates the processing of FIG. On the other hand, if an event has occurred during the operation period ("Yes" in step S102), the recording/playback control device 100 proceeds to step S103.

Then, the recording/reproducing control device 100 outputs the event record data 31 of the event occurring during the operation period of the own vehicle (step S103). Specifically, the recording/playback control device 100 outputs the event recording data 31 by means of the output control section 125 .

As described above, in the first embodiment, when the power of the vehicle is switched from on to off, event record data generated during the operation period of the vehicle is output. As a result, the first embodiment can allow the driver to appropriately refer to the event record data that occurred during the operation period of the own vehicle.
[Second embodiment]
Processing of the recording/playback control device 100 according to the second embodiment will be described with reference to FIG. FIG. 6 is a flow chart showing an example of the processing flow of the recording/playback control device 100 according to the second embodiment. The process illustrated in FIG. 6 shows the process of the recording/reproducing control device 100 when the power is switched from off to on.

As shown in FIG. 6, the recording/reproducing control device 100 determines whether or not the power of the host vehicle is turned on in step S201. Specifically, based on the vehicle information of the own vehicle acquired by the vehicle information acquisition unit 123, it is determined whether or not the power of the own vehicle is turned on.

If the power of the host vehicle is not turned on ("No" in step S201), the recording/reproducing control device 100 executes the process of step S201 until the power of the vehicle is turned on. On the other hand, if the power of the own vehicle is turned on ("Yes" in step S201), the recording/reproducing control device 100 proceeds to step S202.

In step S202, the recording/reproducing control device 100 determines whether or not an event has occurred during the parking period in which the power is off. Specifically, the recording/reproducing control device 100 determines whether an event is detected by the event detection unit 148 while the host vehicle is parked, or whether the event record data is saved while the host vehicle is parked. Determine the presence or absence of occurrence.

If no event has occurred during the parking period ("No" in step S202), the recording/playback control device 100 terminates the processing of FIG. On the other hand, if an event has occurred during the parking period ("Yes" in step S202), the recording/playback control device 100 proceeds to step S203.

Then, the recording/playback control device 100 outputs the event record data 31 of the event that occurred while the host vehicle was parked (step S203). Specifically, the recording/playback control device 100 outputs the event recording data 31 by means of the output control section 125 .

As described above, in the second embodiment, when the power of the vehicle is switched from off to on, the event record data generated while the vehicle is parked is output. As a result, the second embodiment allows the driver to appropriately refer to the event record data that occurred while the host vehicle was parked.
[Third embodiment]
Processing of the recording/playback control device 100 according to the third embodiment will be described with reference to FIG. FIG. 7 is a flow chart showing an example of the processing flow of the recording/playback control device 100 according to the third embodiment. The process illustrated in FIG. 7 shows the process of the recording/reproducing control device 100 that shortens and outputs the event recording data 31 when the power is switched from on to off. In addition, although the processing when the power is switched from on to off will be described below, the same can be applied to the case where the power is switched from off to on.

Steps S301 and S302 illustrated in FIG. 7 are the same as steps S101 and S102 illustrated in FIG. 5, respectively, and thus description thereof is omitted. Moreover, this embodiment can also be applied to the second embodiment shown in FIG.

After "Yes" in step S302, the recording/playback control device 100 shortens and outputs the event record data 31 of the event that occurred during the operation period (step S303). Specifically, the recording/playback control device 100 causes the output control unit 125 to shorten and output the event recording data 31 . Then, the recording/playback control device 100 ends the processing of FIG. In the process of step S303, as described above, the event recording data made up of the shooting data for the first period is output for the second period, which is shorter than the first period.

As described above, in the third embodiment, event record data whose recording time is shorter than the event record data is output. As a result, the third embodiment allows the driver to efficiently refer to the event record data generated during the driving period or parking period of the own vehicle in a short time.
[Fourth embodiment]
The processing of the recording/playback control device 100 according to this embodiment will be described with reference to FIG. FIG. 8 is a flowchart showing an example of the processing flow of the recording/playback control device 100 according to this embodiment. The process illustrated in FIG. 8 shows the process of the recording/reproducing control device 100 for determining whether or not multiple events have occurred when the power is switched from on to off. In addition, although the processing when the power is switched from on to off will be described below, the same can be applied to the case where the power is switched from off to on.

Steps S401 and S402 illustrated in FIG. 8 are the same as steps S101 and S102 illustrated in FIG. 5, respectively, and thus description thereof is omitted. Moreover, this embodiment can also be applied to the second embodiment shown in FIG.

After "Yes" in step S402, the recording/playback control device 100 determines whether or not multiple events have occurred in step S403.

If the number of events that have occurred is not plural ("No" in step S403), the recording/reproducing control device 100 proceeds to step S404. In this case, the recording/playback control device 100 outputs one event record data captured during the operation period of the vehicle (step S404), as in step S103 shown in FIG. Then, the recording/reproducing control device 100 ends the processing of FIG.

On the other hand, if a plurality of events have occurred ("Yes" in step S403), the recording/playback control device 100 proceeds to step S405. In this case, the recording/playback control device 100 sequentially outputs the plurality of event record data 31 stored during the operation period of the own vehicle (step S405). Specifically, the recording/reproducing control device 100 sequentially outputs the plurality of event recording data 31 by means of the output control section 125 . Then, the recording/reproducing control device 100 ends the processing of FIG.

As described above, in the fourth embodiment, when a plurality of events occur while the host vehicle is running, the event record data are sequentially output when the power of the host vehicle is switched from on to off. As a result, in the fourth embodiment, when multiple events occur, the driver can efficiently refer to event record data that occurred while the host vehicle was running.

In addition, in the fourth embodiment, when a plurality of events occur, the event record data of events with large accelerations applied to the own vehicle at the time of event detection can be output in order. As a result, the fourth embodiment allows the driver to preferentially refer to event record data with a high degree of risk. In addition, when a plurality of events occur, the event record data of the events in which the acceleration applied to the own vehicle at the time of event detection is equal to or greater than a threshold value may be selectively output.

Although the embodiments of the present invention have been described above, the embodiments are not limited by the contents of these embodiments. In addition, the components described above include those that can be easily assumed by those skilled in the art, those that are substantially the same, and those that fall within the so-called equivalent range. Furthermore, the components described above can be combined as appropriate. Furthermore, various omissions, replacements, or modifications of components can be made without departing from the gist of the above-described embodiments.

1 Recording/playback control system 10 Camera 20 Microphone 30 Storage unit 31 Event recording data 32 Map information 33 Recognition dictionary 40 Operation unit 50 Display unit 60 Sensor unit 70 GPS receiver 80 Communication unit 90 Battery 100 Recording/playback control device 110 Bus 121 Photographed data Acquisition unit 122 Voice data acquisition unit 123 Vehicle information acquisition unit 124 Storage control unit 125 Output control unit 126 Operation control unit 127 Display control unit 128 Event detection unit 129 Current position calculation unit

Claims (4)

a photographed data acquisition unit for acquiring photographed data photographed by a camera that photographs the surroundings of the vehicle;
an event detection unit that detects an event for the vehicle;
a recording control unit that, when the event detection unit detects an event, saves captured data of a first period based on the detection of the event as event recording data;
a vehicle information acquisition unit that acquires ON information or OFF information of power of the vehicle;
When the vehicle information acquiring unit acquires the power ON information or OFF information of the vehicle, if the number of event record data relating to an event that occurred before the power ON or OFF time point is equal to or greater than a predetermined number, the event recording is performed. data is output for the first period of time, and if there are less than a predetermined number of event recorded data relating to events that occurred before the power on or off time, the event recorded data is output for a period shorter than the first period of time. an output control unit that outputs for two periods;
A recording/playback control device. a photographed data acquisition unit for acquiring photographed data photographed by a camera that photographs the surroundings of the vehicle;
an event detection unit that detects an event based on acceleration applied to the vehicle;
a recording control unit that, when the event detection unit detects an event, saves captured data of a first period based on the detection of the event as event recording data;
a vehicle information acquisition unit that acquires ON information or OFF information of power of the vehicle;
When the vehicle information acquiring unit acquires the power ON or OFF information of the vehicle, the acceleration at the time of event detection of the event record data relating to the event that occurred before the power ON or OFF is an acceleration that rises steeply. In one case, if the event record data is output for the first period, and the acceleration at the time of event detection of the event record data related to the event that occurred before the turning-on or turning-off of the power is a gentle rising acceleration, an output control unit that outputs the event recording data for a second period that is shorter than the first period;
A recording/playback control device. a photographed data acquisition step of acquiring photographed data photographed by a camera that photographs the surroundings of the vehicle;
an event detection step of detecting an event to the vehicle;
a record control step of, when an event is detected in the event detection step, storing captured data of a first period based on the detection of the event as event record data;
a vehicle information acquisition step of acquiring on-information or off-information of power of the vehicle;
When the vehicle information acquiring step acquires the power ON or OFF information of the vehicle, if the number of event record data relating to an event that occurred before the power ON or OFF time is equal to or greater than a predetermined number, the event recording is performed. data is output for the first period of time, and if there are less than a predetermined number of event recorded data relating to events that occurred before the power on or off time, the event recorded data is output for a period shorter than the first period of time. an output control step of outputting for two periods;
A recording/playback control method including: a photographed data acquisition step of acquiring photographed data photographed by a camera that photographs the surroundings of the vehicle;
an event detection step of detecting an event based on acceleration applied to the vehicle;
a record control step of, when an event is detected in the event detection step, storing captured data of a first period based on the detection of the event as event record data;
a vehicle information acquisition step of acquiring on-information or off-information of power of the vehicle;
When the vehicle power ON or OFF information is acquired in the vehicle information acquiring step, the acceleration at the time of event detection of the event record data relating to the event that occurred before the power ON or OFF is an acceleration that rises steeply. In one case, if the event record data is output for the first period, and the acceleration at the time of event detection of the event record data related to the event that occurred before the turning-on or turning-off of the power is a gentle rising acceleration, an output control step of outputting the event record data for a second period shorter than the first period;
A recording/playback control method including:

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