JP7446639B2 - system - Google Patents

Description

The present invention relates to a system for recording video captured by an imaging device.

2. Description of the Related Art Among image recording devices that continuously record captured images, Patent Document 1 discloses an image recording device that has improved stability in recording operation of captured images. The image recording device disclosed in Patent Document 1 includes an imaging camera for acquiring image information, a medium storage unit that removably stores a storage medium, and a control that can execute control for recording a captured image on the storage medium. and means. The control means deletes the captured images in order from the oldest captured image, and sequentially secures free space in the storage area of the storage medium while storing new captured images in the free space, thereby erasing the captured images for a predetermined period in the past. It is possible to execute a control mode in which a series of captured images over a period of time are recorded using a storage medium. This image recording device includes at least two medium storage units.

Japanese Patent Application Publication No. 2014-220803

If at least two medium storage units are provided, for example, the user may be confused as to which medium storage unit should store the storage medium. For example, it may be difficult for the user to understand what kind of information is stored on a storage medium removed from one medium storage unit. An object of the present invention is to provide a system that improves convenience by alleviating user confusion or helping the user know what kind of information is stored on the storage medium removed from the medium storage unit. It is to be.

(1) at least two media storage units holding removable storage media;
The vehicle has a function of accessing the storage media stored in each of the medium storage sections, and has a function of storing an image captured by an imaging device mounted on the vehicle in the storage medium held in at least one of the medium storage sections. control means having;
The system preferably includes notification means for informing the user of the role played by the storage medium accessed by the control means.

The user can remove the storage medium in which the image captured by the imaging device mounted on the vehicle is stored from the medium storage unit and use it in another device. Furthermore, the user can recognize the role of the storage medium held or to be held in the medium storage unit. A user who recognizes the role of the storage medium can appropriately handle the storage medium according to its role when attaching or removing the storage medium to or from the medium storage unit or after removing the storage medium from the medium storage unit. This increases convenience for the user.

For example, the notification means may notify the user of the role played by the storage medium loaded into the medium storage section, before the user loads the storage medium into the medium storage section. The user can learn the role of the storage medium before loading the storage medium into the medium storage unit. For example, when the user removes the storage medium from the medium storage unit, the notification means may notify the user of the role played by the storage medium loaded in the medium storage unit. The user can know the role played by the storage medium removed from the medium storage unit. It is particularly preferable that the notification means informs the user of the role played by the storage medium both before the user attaches the storage medium to the medium storage unit and when the user removes the storage medium from the medium storage unit.

As the removable storage medium, for example, an SD card, a micro SD card, an XQD card, etc. can be used. For example, it is preferable to provide an insertion opening such as a slot in the system casing corresponding to the medium storage section. For example, the user can load the storage medium into the medium storage unit through the insertion port and remove the storage medium from the medium storage unit.

Accessing the storage medium accommodated in the medium storage unit may include at least one of writing data to the storage medium and reading data from the storage medium.

Next, the roles played by the storage media held in the two medium storage units will be illustrated.

(1.1) For example, it is preferable to record images captured by an imaging device mounted on a vehicle on both of the two storage media. This video may include, for example, video from when the vehicle's power is turned on until it is turned off, or video from a predetermined period of time before and after a predetermined event occurs while the vehicle's power is on. , a video taken during the parking period, a video taken at a predetermined time before and after a predetermined event occurs during the parking period, etc. A user can use a system including this imaging device as a drive recorder.

For example, it is preferable to simultaneously record the same video on storage media held in two media storage units, with one having the role of backing up the other. For example, one storage medium may have the role of recording video in real time, and the other storage medium may have the role of copying the recorded video. For example, one storage medium may have the role of recording high resolution or high frame rate video, and the other storage medium may have the role of recording video at low resolution or low frame rate for a long time.

For example, one video may be recorded alternately on two storage media at regular intervals, and the two storage media may have the role of complementing each other to form one video. For example, by switching between two storage media in a short period of time each time a video is written to the storage medium and alternately recording one video onto the two storage media, the apparent writing speed of the two storage media can be increased. It would be good to have a role to improve. For example, when a temporary write error occurs in one storage medium, the other storage medium may have the role of replacing the storage medium in which the write error occurred.

For example, one storage medium may have the role of constantly recording video from the time the vehicle is turned on to the time the vehicle is turned off, and the other storage medium may have the role of recording images at the time when a predetermined event occurs. It would be good to have the role of recording images before and after. For example, one storage medium may have the role of constantly recording images while the vehicle is powered on, and the other storage medium may have the role of recording images during the parking period.

For example, one storage medium may be set to a general-purpose format so that it can function as a storage medium for playing video on another general-purpose playback device, and the other storage medium may be set to a unique format. It is preferable to make it into a format so that it has the role of a storage medium for playing back videos only by this system and devices with unique playback functions.

For example, one storage medium has the role of recording images before and after a specific event (type 1 event), and the other storage medium has the role of recording images of an event different from the first type event (type 1 event). It is preferable to have the role of recording images before and after the occurrence of the second type of event). Information defining the first type event and the second type event is preferably stored in the control means in advance.

For example, a vehicle may be equipped with two imaging devices (a first imaging device and a second imaging device), and one storage medium may have the role of recording images captured by the first imaging device. It is preferable that the other storage medium has the role of recording the video imaged by the second imaging device.

(1.2) One storage medium has the role of recording images captured when the imaging device is mounted on a vehicle, and the other storage medium has the role of recording images captured when the imaging device is taken out from the vehicle, for example when outdoors. It is preferable to have the role of recording images taken while attached to equipment used for sports. Examples of outdoor sports include snowboarding, skiing, surfing, windsurfing, cycling, and jogging. A user can use a system including this imaging device as a drive recorder or as an action camera.

(1.3) One storage medium has the role of directly recording images taken by an imaging device mounted on the vehicle (images around the vehicle, especially images in front of the vehicle), and the other storage medium has the role of recording, for example, images taken by an imaging device mounted on the vehicle. It is preferable to have the role of recording a video obtained by combining other images with the video captured by the imaging device installed in the camera. The other image may be a warning image or the like that informs you that you are approaching a radar device. By fast-forwarding and playing back the video in which the alarm image has been combined, it is possible to easily find the video of the period when the radar device was approached. It is possible to check how the driver drove when a warning etc. was generated by comparing it with the contents of the warning.

(1.4) One storage medium has the role of recording images captured by an imaging device mounted on the vehicle, and the other storage medium has a log in which, for example, information about the vehicle while it is running is arranged in chronological order. It is good to have a role for recording data.

For example, one storage medium is assigned the role of recording images of the surroundings of the vehicle, especially in front of the vehicle, and the other storage medium is used to check for dangerous driving such as sudden starts, sudden turns, sudden braking, sudden acceleration, etc. It is good to have the role of recording the log data that is the basis for the process.

(1.5) One storage medium has the role of recording images captured by an imaging device mounted on a vehicle, and the other storage medium is used to extract a specific image from the images captured by the imaging device. It is good to have the role of recording template images for The template image may be, for example, an image of various traffic signs, an image of a specific person, an image of a specific vehicle number, or the like. By performing image recognition based on images of traffic signs on images acquired in real time, it is possible to detect traffic rules that apply to the current location. By performing image recognition based on an image of a specific person and an image of a specific vehicle number on images acquired in real time, it is possible to find a specific person or a specific vehicle.

(1.6) One storage medium has the role of recording images captured by an imaging device mounted on the vehicle, and the other storage medium has key information that allows various accesses to the system. It is preferable to have the role of storing (information indicating access authority). It is possible to prevent a user who only has lower access authority from performing a process that is permitted only to a person who has higher access authority. This can improve security.

(1.7) For one storage medium to have the role of recording images captured by an imaging device mounted on a vehicle, and for the other storage medium to specify conditions for marking recorded images. It is good to have the role of storing the information that is the basis of the information. The control means may apply a mark indicating the occurrence of an event to the video at the time when the occurrence of an event that satisfies the conditions for placing the mark is detected. After the video is recorded, the video at the time when a predetermined event occurred can be easily searched for using the mark attached to the video. A storage medium that has the role of recording video also has the role of recording a mark indicating the time when a predetermined event has occurred.

(1.8) One storage medium has the role of recording images captured by an imaging device mounted on a vehicle that regularly travels on a predetermined route, and the other storage medium It is preferable to have the role of recording images captured by an image capturing device mounted on a vehicle that traveled a designated route. Preferably, the control means plays back images captured in the past while the vehicle is traveling on a predetermined route. The driver can drive on a predetermined route without hesitation based on the video being played back.

(1.9) One storage medium has the role of recording images taken by an imaging device displayed inside the dealership instead of the imaging device installed in the vehicle, and the other storage medium It would be good to have the role of recording video images for sales promotion. A store can use a system including this imaging device as a demo device for sale. In addition, by playing promotional video footage, consumers can be informed of the system's functions and performance.

As a notification means, for example, a display device that displays an image, an audio output device that outputs audio, a communication device that sends a command to display an image on the display device or output audio to the audio output device, and a location that accommodates a storage medium. It is preferable to use characters, figures, etc. displayed on the surface of the casing in association with the . In addition, as a notification means, in a configuration in which the storage medium is inserted into the medium storage unit through the insertion opening of the housing, configurations in which the size of the insertion opening is different, configurations in which the shape of the insertion opening is different, and configurations in which the storage medium is inserted It is also possible to have a configuration in which the directions are different, and a configuration in which the difficulty level of access to the insertion port is varied.

For example, the role played by the storage medium is not fixed to one example (role mode) illustrated in (1.1) to (1.9) above, but which mode role the storage medium plays. It would be good to make it changeable. For example, it is preferable to provide a function that allows the user to select which mode the storage medium should play. When the storage media are removed from all the media storage units, it is preferable that the mode of the role played by the storage media is returned to a preset basic mode. The role mode may not be determined before the storage medium is installed in the medium storage unit, and the role mode may be determined after the storage medium is installed in the medium storage unit.

(2) The control means has a function of alternately recording images captured by the same imaging device on storage media respectively held in the medium storage units in a certain time unit,
Preferably, the control means further has a function of informing the user, through the notification means, that the storage media respectively held in the medium storage unit have the role of forming one video together as a set. .

The user can easily notice that the storage media held in each of the plurality of medium storage units form a set of images. After removing the storage medium from the medium storage unit, the user realizes that it is preferable to handle multiple storage media as a set, which may lead to a situation where the storage media in the set are scattered and cannot form a single image. It becomes difficult.

For example, when a storage medium held in one media storage is removed, the control means may cause the audio or It is best to prompt the user with an image. For example, when a storage medium is held in one medium storage unit, the control means may prompt the user by voice or image to cause the other medium storage unit to hold the other storage medium in the set. For example, the time unit for switching the storage medium for recording video may be from several minutes to several tens of minutes.

(3) When the control means detects that the storage medium held in one of the medium storage units is removed, the control unit also displays an image of the storage medium held in the other medium storage unit through the notification unit. It is preferable that the system has a function of notifying the user that it is necessary for playback.

When a user removes a storage medium from the medium storage unit in order to play back video recorded on the storage medium on another device, it is less likely that the user will forget to remove the other storage medium. This allows the video to be played back on other devices without having to go back. For example, in the configuration (2) above, the user can play back the video on another device by using a set of two storage media on which video is recorded alternately every certain time unit. For example, a video may be recorded on one storage medium, and information indicating the authority to reproduce the video (hereinafter referred to as key information) may be stored on the other storage medium. At this time, the user can play back the video on another device using the storage medium on which the video is recorded and the storage medium on which the key information is stored as a pair.

(4) Furthermore, it has a communication means for transmitting images,
The control means transfers a video recorded on a storage medium held in one of the medium storage units that has not been transmitted via the communication unit to a storage medium held in the other medium storage unit. It is recommended that the system has the function of reading and transmitting data during the recording period.

After recording the video on the storage medium, the control means can transmit the recorded video to an external device. The user can play back the video on an external device without removing the storage medium from the medium storage unit. Typically, removable storage media exhibits a tendency for write and read speeds to drop significantly when data is read while data is being written. While video is being recorded on a storage medium, the video recorded on the storage medium is not read out, and while video is being recorded on another storage medium, the video that could not be sent is read out and sent. Decrease in write and read speeds can be suppressed. Even if the video cannot be transmitted immediately due to a communication error or the like, the video can be read out from the storage medium and transmitted later. The storage medium plays the role of recording video, and also plays the role of a storage means for storing the video transmitted via the communication means until the transmission is completed.

For example, the control means may record the video imaged by the imaging device on a storage medium held in the medium storage unit, and transmit it to an external device immediately (in real time) through the communication means. For example, the communication means may transmit images by wireless communication. As the wireless communication technology, for example, a wireless communication technology compliant with the WiFi standard, a short-range wireless communication standard such as Bluetooth (registered trademark), a mobile communication system standard such as 4G, etc. can be used. For example, a server, a personal computer, a smart phone, a tablet terminal, etc. can be used as the external device.

(5) The control means has a buffer memory that temporarily stores images, and transfers images captured by the same imaging device from the buffer memory to a storage medium held in one of the medium storage units. The system may have a function of starting the transfer from the buffer memory to the storage medium held in the other medium storage unit before the transfer ends.

The apparent writing speed can be made faster than when recording video on a single storage medium. This makes it possible to record video at such a high frame rate and high resolution that the writing speed to a single storage medium would not be enough. The two storage media record short-time video that is temporally continuous, divided into pieces on the time axis, and the two storage media combine to record one temporally continuous video. Takes on the role of configuring.

For example, it is preferable to use DMA transfer to record video onto a storage medium, and to switch the transfer destination storage medium for each DMA transfer block.

It is preferable to prepare a buffer memory for each medium storage unit. When the process of transferring the video in one buffer memory to the storage medium is completed, a new video is buffered in the buffer memory where the video transfer has been completed, without depending on the transfer status of the video in the other buffer memory. Can be done. The memory space within one buffer memory may be divided into an area for one medium storage unit and an area for the other medium storage unit.

(6) at least two of the medium storage units support interface standards with mutually different maximum write speeds;
The control means writes the video imaged by the imaging device in real time to a storage medium held in the medium storage unit that supports an interface standard with a faster maximum writing speed, and writes the video imaged by the imaging device in real time in response to a command from a user. It is preferable that the system has a function of copying the written video to the storage medium held in the other medium storage unit.

Compared to recording video in real time on a storage medium with a slower writing speed, it becomes possible to record video in real time at a higher frame rate and higher resolution. When a video recorded on a storage medium with a faster writing speed is to be copied to another storage medium, the copy destination storage medium is not required to have a faster writing speed. Therefore, a lower cost storage medium can be used as the storage medium with a slower writing speed. This allows the same video to be copied onto multiple low-cost storage media and used for distribution. A storage medium held in a medium storage unit that supports an interface standard with a high maximum write speed is responsible for recording video in real time, for example, and a storage medium held in the other medium storage unit is responsible for recording video in real time, for example. It plays the role of copying the video that is being played. In particular, since this system has the configuration (1) above, the user can distinguish between a storage medium for recording video in real time and a storage medium for copying.

For example, an XQD card can be used as the storage medium with a faster maximum writing speed, and an SD card can be used as the storage medium with a slower maximum writing speed.

For example, the notification means may include information (e.g., location) that specifies the media storage unit into which the storage medium for recording images in real time should be installed, and information (e.g., location) that specifies the media storage unit into which the storage medium for copying should be installed. ) may be displayed on the display device.

(7) At least one of the medium storage units supports an interface standard with a storage medium having a wireless communication function,
The control means has a function of causing a storage medium having a wireless communication function to transmit an image captured by the imaging device, and reads out an image from a previous storage medium held in the other medium storage section. It is preferable that the system has a function of transmitting a video image.

An image captured by an imaging device can be wirelessly transmitted to an external device via a storage medium having a wireless communication function. Thereby, the user can play back the video on the external device without removing the storage medium from the medium storage unit. The storage medium held in one medium storage unit plays the role of wirelessly transmitting the video, and the storage medium held in the other medium storage unit plays the role of recording the video. Note that the storage medium that plays the role of wirelessly transmitting may also play the role of recording video.

As a storage medium having a wireless communication function, for example, an SDIO card having a communication function of the WiFi standard, an SDIO card having a communication function of the mobile communication system standard, an SDIO card having a communication function of the transfer jet standard, etc. can be used.

It is further preferable that the two medium storage units support an interface standard with a storage medium having a wireless communication function. For example, when an image is being recorded on a storage medium held in one medium storage unit, the image already recorded on a storage medium held in the other medium storage unit is It can be sent using the function.

(8) When one of the medium storage portions holds a storage medium in which a video imaged in the past by an imaging device mounted on a vehicle is recorded together with information on the location of the imaged image;
The control means may be a system having a function of reading an image corresponding to the corresponding position information from a storage medium held in the medium storage section and displaying it on the display means based on the current position of the vehicle.

The driver can drive while referring to the image displayed on the display means. It is preferable that the image taken in the past be taken while the vehicle is traveling along the recommended travel route. For drivers who are unfamiliar with the recommended driving route, the image displayed on the display means provides useful information for driving on the recommended driving route. For example, the storage medium held in one media storage unit has the role of recording images in real time, and the storage medium held in the other media storage unit has the function of providing images from past runs. .

(9) In the system of (8) above, the notification means may prompt the user to select one of the two medium storage units that is to hold the storage medium on which the video to be displayed on the display unit is recorded. It would be good to have a system that has a function to notify you.

The driver can easily know which medium storage unit should hold the storage medium in which previously captured images are recorded. Therefore, it becomes difficult to erroneously attach a storage medium to the medium storage unit.

(10) Furthermore, it has an internal power source that supplies power to the control means when the supply of power from the outside is stopped;
The control means records an image on a storage medium held in one of the medium storage units when power is supplied from the outside, and records the video from the internal power supply when the supply of power from the outside is stopped. It is preferable that the system has a function of receiving power supply and recording an image on a storage medium held in the other medium storage section.

The user can take the system out of the vehicle and image the desired object. A storage medium in which images captured while the system is mounted on a vehicle is recorded and a storage medium in which images captured while the system is taken out of the vehicle are recorded can be stored separately. When the system is installed in a vehicle, images captured by the imaging device are recorded on the storage medium held in one medium storage section, and the images are recorded outside the vehicle from the storage medium held in the other medium storage section. Recorded video can be read out.

For example, you can drive a vehicle and go on a vacation, and at the resort you can take this system out of the vehicle and use it as an action camera. Videos taken at the resort can be played back in the car on the way back from the vacation.

For example, one storage medium plays the role of recording images in real time while the vehicle is running, and the other storage medium plays the role of recording images captured when the vehicle is being used as an action camera, and the other storage medium plays the role of recording images captured when the vehicle is being used as an action camera. Its role is to provide images captured during use inside the vehicle. For example, the notification means may include information (e.g., location) specifying a medium storage unit that holds a storage medium that records images while the vehicle is running, and a storage medium that records images captured when the vehicle is used as an action camera. It is preferable to display information (for example, position) specifying the medium storage unit holding the medium on the display means. Thereby, the user can easily know which video is recorded on the storage medium held in which medium storage unit.

The system operates as a drive recorder while external power is supplied to the system, and when the external power supply stops while the system is operating as a drive recorder, the system operates as a parking surveillance recorder. When the main switch of the system is turned on with no external power supplied to the system, it is recommended to operate it as an action camera. When operating as a drive recorder or parking surveillance recorder, images are recorded on a storage medium held in one medium storage unit, and when operating as an action camera, images are stored in the other medium storage unit. It is advisable to record the video on a storage medium that is

After operating as an action camera, when the system is installed in a vehicle and power supply from the outside is started, it is preferable to automatically play back videos recorded during the period of operation as an action camera. The user can immediately view and enjoy the video captured by the action camera in the car.

After operating as an action camera, the current image captured by the imaging device is displayed on the display means until a predetermined period of time has elapsed from the time when the system is mounted on the vehicle and external power supply is started. After a predetermined period of time has elapsed, the video recorded during the period of operation as an action camera may be automatically played back. The user can adjust the posture of the imaging device while viewing the image displayed on the display device during a period in which the current video imaged by the imaging device is displayed on the display device.

(11) The control means records the video imaged by the imaging device mounted on the vehicle on a storage medium held in one of the medium storage units, and records the video imaged by the imaging device mounted on the vehicle. It is preferable that the system has a function of recording a composite image obtained by superimposing another image on a storage medium held in the other medium storage section.

Users can use the composite image for various purposes when checking the video recorded while the vehicle is running after driving, and can leave the unprocessed video as is on the other storage medium. can. When playing the video, the composite image and the unprocessed video can be compared. The unprocessed video provides a detailed understanding of the situation surrounding the vehicle at the time of the alarm. Furthermore, since it can be assumed that unaltered images have not been tampered with, they are considered to have higher evidentiary value than synthetic images. One storage medium plays the role of recording video in an unprocessed state, and the other storage medium plays the role of recording a composite image obtained by combining images such as alarm information with the captured video.

For example, an image generated by a computer may be used as an image to be superimposed on a video imaged by an imaging device. As the computer-generated image, it is preferable to employ, for example, alarm information detected by a device such as a radar detector. The warning information includes, for example, information indicating the distance to a warning target such as a radar speed control device, and information to call attention to the driver, such as information issued to the driver to urge the driver to reduce the speed. The person in charge of managing the vehicle can check what kind of driving the driver was doing when the warning was issued.

It is preferable to record the alarm information as an image by superimposing it on the video, and also emit a sound to notify the alarm and record the audio information. For example, a storage medium that stores unprocessed video may record audio picked up by a microphone in the vehicle, and a storage medium that stores a composite image may record only the audio of an alarm.

As a composite image, a translucent image representing alarm information may be superimposed on a video imaged by an imaging device. It is advisable to divide the screen and display a map of the area around the vehicle position at the time the warning is issued on a portion of the screen.

(12) The control means has a function of recording images taken by two imaging devices on storage media held in different medium storage units, and the notification means records images taken by two imaging devices and the medium. It is preferable to use a system that notifies the user of the correspondence relationship with the storage section.

The two storage media each play the role of recording images captured by different imaging devices. The notification means may display, as an image or text information, the correspondence between, for example, two medium storage units and an imaging device that captures an image to be recorded on a storage medium held in the medium storage units. It is possible to record images of a wide area that cannot be covered by one imaging device. The user can easily know which storage medium held in which medium storage unit records an image captured by which imaging device. The user can remove the storage medium on which the video he or she wants to check is recorded from the medium storage unit.

The control means may notify the user, through the notification means, that the images recorded on the storage media respectively held in the two medium storage units are images of different areas captured during the same period. A user who notices the notification through the notification means can associate images taken during the same period and, for example, display the images from the same time simultaneously on the display means for confirmation.

When the user removes only the storage medium held in one medium storage unit, the control means controls whether images captured during the same period are recorded on the storage medium held in the other medium storage unit. Therefore, it is preferable to prompt the user through the notification means to also remove the storage medium held in that medium storage unit. This notification makes it difficult to forget to remove the storage medium from the medium storage unit.

When checking the images of the storage media held in the two medium storage units, it is preferable that the playback device synchronizes the two images and displays the images at the same time on the display means at the same time. The user can easily check the situation around the vehicle at the same time.

For example, the two imaging devices may be devices that capture images of the front and rear of the vehicle, or the front and interior of the vehicle. After the vehicle is running, it is possible to check the situation both in front and behind the vehicle, or both in front and inside the vehicle.

For example, two imaging devices may be mounted on a work vehicle, one imaging the front of the vehicle and the other imaging the work area. For example, it is preferable that the work vehicle on which the imaging device is mounted is a forklift, and the work area to be imaged by one imaging device is the range of the lifting and lowering motion of the fork. The user can check the running status of the work vehicle and the work status on video after the work is completed.

For example, it is preferable to mount two imaging devices on a vehicle operating in a premises, one for imaging the front of the vehicle and the other for imaging the driver. By viewing the images captured by the two imaging devices, it is possible to verify whether the driver is following the driving rules within the premises. For example, it is possible to verify whether the user points and cheers when turning left or right. If audio is added to the video, it can be verified whether or not a cheer such as "Right, right, left" was cheered at a specific location.

For example, different types of imaging devices may be used as the two imaging devices. For example, a spherical camera may be used as one imaging device, and a normal camera may be used as the other imaging device. Based on the information notified through the notification means, the user selects a storage medium that stores images captured by a spherical camera and a storage medium that stores images captured by a normal camera. can be easily distinguished.

It is preferable that one of the two imaging devices is housed within the system housing, and the other is an external camera. Since the user only needs to connect one external camera to the housing, the connection work can be simplified.

Both of the two imaging devices may be external cameras. The user can select an external camera with suitable performance depending on the object to be imaged and the purpose of the imaged image. Furthermore, the arrangement position of the imaging device is not affected by the position of the system casing, increasing the degree of freedom in arrangement of the imaging device. It is preferable that the shapes of the connection terminals on the housing side of the system for connecting the external cameras are made different from each other. It is possible to prevent connection errors between two external cameras of different types.

The number of medium storage units may be three or more, and the number of imaging devices corresponding to the number of medium storage units may be prepared. By preparing three or more medium storage units and imaging devices, a wider range of images can be simultaneously captured and recorded on corresponding storage media.

(13) The control means records videos captured by the same imaging device on the storage media held in the two media storage units while changing recording conditions of at least one of frame rate and resolution. The notification means may be a system having a function of notifying the user of information based on the difference in recording conditions.

A storage medium that records under recording conditions with a low frame rate or resolution can be used for long-term recording, and a storage medium that records under recording conditions with a high frame rate or resolution can be used for long-term recording. It can be used for more detailed analysis of images. Based on the information notified through the notification means, the user can easily determine which storage medium to view the video stored in the storage medium according to the purpose of using the video.

A storage medium for long-term recording has a longer lifespan because it is rewritten fewer times than a storage medium for detailed analysis. For example, even if the video is not recorded on the storage medium for detailed analysis because it has exceeded its lifespan, the video remains on the storage medium for long-term recording. Furthermore, the probability that two storage media reach the end of their life at the same time is low. Therefore, even if one storage medium reaches the end of its lifespan, images will continue to be recorded normally on the other storage medium, and it is unlikely that a situation will occur where no images remain on either storage medium. do not have.

The storage media held in the two medium storage units play the role of recording videos captured by the same imaging device under different recording conditions. As the information based on the difference in recording conditions that the notification means informs the user about, it is preferable to employ, for example, information indicating a frame rate, information indicating a resolution, or the like.

(14) A recording condition of at least one of a frame rate and a resolution is stored in a storage medium held in at least one of the medium storage units,
The control means may be a system having a function of reading recording conditions stored in a storage medium held in the medium storage unit and recording video based on the read recording conditions.

By storing the recording conditions in advance in the storage medium held in the medium storage unit, the user can record video on the storage medium under desired recording conditions.

In addition to the frame rate and resolution, the recording conditions may include, for example, conditions for determining the occurrence of an event when recording videos before and after the event occurs, conditions for determining whether to record audio, and the like. As a condition for determining the occurrence of an event, for example, a detection value of an acceleration sensor mounted on a vehicle may be used as a determination threshold. In addition to the detection value of the acceleration sensor, other event types may be used as recording conditions.

The storage medium held in the medium storage unit plays the role of recording video, and the storage medium held in at least one of the medium storage units plays the role of storing recording conditions. The notification means may notify the user of information (for example, location) specifying the medium storage unit that holds the storage medium that stores the recording conditions.

When recording conditions are stored in both storage media held in the two medium storage units, the control means enables the recording conditions stored in the storage medium held in one specific medium storage unit. It is preferable to record the video on the two storage media based on the valid recording conditions without using the recording conditions stored in the storage medium held in the other medium storage unit. The user only needs to have a storage medium storing the recording conditions that he or she actually wants to record stored in one specific medium storage unit, and there is no need to know the recording conditions stored in the other storage medium.

The control means activates the recording conditions stored in the storage media held in the two medium storage units, and records video for each storage medium based on the recording conditions stored in the storage medium. It's okay. The user can determine recording conditions for each storage medium.

The control means may record the video on the storage medium based on the recording conditions set in advance in the control means, without employing the recording conditions stored in the storage medium. By setting the recording conditions in the control means in advance, the user can set the recording conditions based on the desired recording conditions without checking the recording conditions stored in the storage medium each time the storage medium is held in the medium storage unit. Video can be recorded.

The control means has a mode in which the recording conditions stored in the storage medium held in one specific medium storage section is enabled, a mode in which both recording conditions stored in the storage medium are enabled, and a mode in which the recording conditions stored in the storage medium are enabled in advance. It is preferable to have the user select one mode from among modes that enable the recording conditions set in the control means. The user can select the most appropriate mode depending on how the system is used.

The control means may cause the display means to display a plurality of modes for the user to select as a menu. The user only has to select one mode from the menu. When a storage medium with no recording conditions stored is held in the medium storage unit, exclude from the menu the mode that enables the recording conditions stored in the storage medium held in the medium storage unit. It's a good idea to leave it there. When no recording conditions are set in the control means, it is preferable to exclude from the menu a mode that enables the recording conditions set in the control means. The user can see a list of selectable modes.

It is preferable that the recording conditions and the priorities are stored in each storage medium, and the control means enables the recording condition with the higher priority. If the priorities are the same, it is preferable to determine which recording condition is to be enabled based on when the priorities were set. For example, it is preferable to enable the recording condition that has been set more recently. Conversely, the recording condition with the older setting time may be enabled. It is preferable to set in advance in the control means whether to enable the recording condition with the latest setting time or the recording condition with the oldest setting time.

(15) The control means may be a system having a function of recording images captured by the same imaging device in real time on both storage media held in at least two of the medium storage units.

Even if a write error occurs on the storage medium held in either media storage unit and no video is recorded, the video can be correctly recorded on the storage medium held in the other media storage unit. can. Therefore, it is possible to avoid a situation where no video remains at all. It is possible to remove the storage medium from only one medium storage section and play back the video on another device such as a personal computer.

For example, storage media held in two media storage units record the same video and serve as mutual backups. The notification means may notify the user that the same video is recorded on the storage media held in the two medium storage units, for example.

Preferably, the control device stores, in each storage medium on which the same video is recorded, information that there is another storage medium on which the same video is recorded, and information that associates the two (pairing information). The control means reads pairing information of the storage medium held in one medium storage unit to determine whether or not there is a paired storage medium in which the same video is stored, and to identify the paired storage medium. Can be done.

(16) The control means has a function of verifying when recording an image on the storage medium held in the medium storage unit, and the control means has a function of verifying when recording the video onto the storage medium held in one of the medium storage units, and a verification error occurs when recording on the storage medium held in one of the medium storage units. It is preferable that the system has a function of recording an image in which a verification error has occurred on a storage medium held in the other medium storage unit when a verification error occurs.

Video that could not be written due to a verify error occurring when writing to one storage medium can be written to the other storage medium. As a result, it is possible to reduce the frequency of occurrence of situations in which video cannot be recorded as a whole.

The storage media held in the two medium storage units complement each other and play the role of recording video even if a verification error occurs in one of the storage media when recording video. For example, the notification means may notify the user that one video is recorded on the storage media held in the two media storage units in a manner that complements each other.

For example, if an acknowledgment (ACK) signal is returned when writing video to a storage medium, it is determined that a verification error has not occurred, and if a negative acknowledgment (NAK) signal is returned, it is determined that a verification error has occurred. good. Alternatively, the presence or absence of a verification error may be determined by reading out the recorded video and checking the consistency of the data.

After a verify error occurs and the storage medium on which the video is recorded is changed, if a verify error also occurs on the changed storage medium, the video recording destination may be returned to the original storage medium. If the cause of the verification error is temporary, there is a possibility that the video can be recorded normally on the original storage medium.

(17) Key information indicating access authority is stored in a storage medium held in at least one of the medium storage units,
The control means reads key information stored in a storage medium held in the medium storage unit, and controls access to the storage medium held in the medium storage unit based on the read key information. It is recommended that the system has functions that can be restricted or permitted.

The storage medium held in one medium storage unit plays the role of recording video, and the storage medium held in the other medium storage unit indicates the access authority to the storage medium held in the medium storage unit. It plays the role of storing key information. By restricting access according to key information, system security can be increased. For example, the control means may have a function of operating in either an administrator mode or a user mode. The key information to be stored in the storage medium may be permission for operation in administrator mode, permission for operation only in user mode, or the like. For example, when operating in the administrator mode, the control means can initialize the storage medium held in the medium storage unit, but when operating in the user mode, the control means can initialize the storage medium held in the medium storage unit. It is preferable to disable initialization processing of the storage medium held in the storage unit. For example, the information stored in the storage medium may be divided into information that can only be viewed by an administrator and information that can be viewed by general users. When operating in administrator mode, the control means can read information that can only be viewed by the administrator, but when operating in user mode, it can read information that can only be viewed by the administrator. It is better to make it unreadable.

It is preferable that information for driver guidance is stored in the storage medium that stores the key information. It is preferable that the control means reads out information for driver guidance and causes the output means to output the information. As the output means, for example, a display means for displaying an image or a sounding means for outputting sound may be used. By noticing the information output to the output means, the driver is motivated to drive safely. The administrator may store information for driver guidance in a storage medium for each driver based on the driving habits of that driver, and provide the information to the driver.

For example, if a driver has a habit of ignoring temporary stops, it may be a good idea to give them a storage medium that stores information that urges them to stop. When the control means detects a stop sign by analyzing the image captured by the imaging device, it is preferable that the control means causes the output means to output information prompting a stop sign. As information to prompt the driver to stop, for example, it is preferable to output a voice saying, "Let's stop at the place where there is a stop sign." For example, a driver who frequently turns the wheel suddenly may be given a storage medium that stores information urging him not to turn the wheel suddenly.

Managers can learn about each driver's driving habits by viewing the video that is constantly recorded while the vehicle is in motion. Furthermore, by associating the video recorded on the storage medium with the location information, it is possible to specify the location where dangerous driving occurred in the past. It is advisable for the administrator to store this position information together with information for driver guidance. When the control means detects that the vehicle approaches a place where dangerous driving has been performed in the past, it is preferable that the control means causes the output means to output information for calling attention not to engage in dangerous driving. Furthermore, when the control means detects the occurrence of dangerous driving of the same type as the dangerous driving stored as information for driver guidance, it is preferable that the control means causes the output means to output information that calls attention not to engage in the dangerous driving. . Further, it is preferable that the control means causes the output means to output information for calling attention not to engage in dangerous driving when an event that predicts the occurrence of dangerous driving occurs. For example, when a traffic light is detected in an image captured by an imaging device, it is preferable to output information from the output means to alert the user not to ignore the signal. For example, when a pedestrian is detected in an image captured by the imaging device, information for alerting the pedestrian to be careful may be outputted from the output means.

(18) The notification means may be a system having a function of notifying the user of the medium storage unit among the at least two medium storage units that should hold the storage medium in which the key information is stored.

It becomes difficult to erroneously attach a storage medium storing key information to a medium storage unit. For example, as a notification means for notifying the user of the role played by the storage medium, a mark indicating the key information may be provided on the surface of the casing near the medium storage unit into which the storage medium storing the key information is to be attached. Further, when the control means detects that the storage medium in which the key information is stored is installed in the wrong medium storage unit, the control means causes the notification unit to output information prompting the storage medium to be installed in the correct medium storage unit. Good.

(19) The control means may display images captured by the imaging device from the time the power of the vehicle is turned on to the time the power is turned off, and a portion of the video including the time when a predetermined event occurs. A function for recording images on storage media held in mutually different medium storage units, or an image captured by an imaging device from the time the vehicle is turned on to the time the vehicle is turned off. The system may have a function of recording images captured by an imaging device during a period when the power of the vehicle is off on storage media held in mutually different medium storage units.

The overall recording capacity is increased compared to the case where the two videos described above are recorded on one storage medium. This determines the amount of time that images captured by the imaging device can be recorded from the time the vehicle is turned on to the time the vehicle is turned off (referred to as continuous recording), or when the vehicle is powered off. The time during which images captured by the imaging device can be recorded (referred to as parking surveillance recording) becomes longer. When performing constant recording or parking monitoring recording, the number of times of overwriting can be reduced if a process is performed to overwrite an old video with a new video when the storage medium runs out of free space. This can extend the life of the storage medium.

A storage medium with an appropriate recording capacity may be prepared depending on the capacity of the video to be recorded. For example, a storage medium for recording a portion of video including the time when an event occurs (referred to as event recording) does not require as much capacity as a storage medium for constant recording or parking surveillance recording. For this reason, prepare a large-capacity storage medium for constant recording or parking surveillance records, and prepare a storage medium for event recording that has a smaller capacity than the storage medium for constant recording or parking surveillance records. do it. This makes it possible to reduce the cost required for storage media.

The storage medium held in one medium storage unit plays the role of constantly recording video, and the storage medium held in the other medium storage unit plays the role of recording video parking surveillance or event recording. For example, the notification means may notify the user of information (for example, location) specifying a medium storage unit in which a storage medium for constantly recording video, parking monitoring recording, or event recording is held.

The user can remove only the storage medium on which the desired video is recorded from the medium storage unit and play it back on an external device. For example, if you want to view a video of an event occurring, you only need to remove the event recording storage medium from the medium storage unit.

"Video captured by an imaging device while the vehicle is powered off" includes, for example, a video captured while the vehicle is parked. It is preferable to record images taken during the entire period of parking, and it is particularly preferable to record a portion of images including the time when a predetermined event occurs during parking. The events may include, for example, the occurrence of movement in the image being captured, the occurrence of vehicle vibrations, the occurrence of loud noises, the opening of a vehicle window, the opening of a vehicle door, and the like. By recording a portion of the video including the time point at which an event occurs on a storage medium for parking surveillance recording, it is possible to reduce the consumption of the capacity of the storage medium.

(20) The control means records an image captured by an imaging device mounted on the vehicle on a storage medium held in one of the medium storage units, and records information related to the running of the vehicle acquired from the vehicle. It is preferable that the system has a function of recording on a storage medium held in the other medium storage unit.

The administrator can evaluate the driving at the time of image acquisition by associating the image stored in the storage medium with information related to the driving of the vehicle at the time of image capture. The storage medium held in one medium storage section plays the role of recording images captured by the imaging device mounted on the vehicle, and the storage medium held in the other medium storage section plays the role of recording images taken from the vehicle. It plays the role of recording information related to vehicle driving. The notification means may include, for example, information (e.g., location) that specifies a medium storage unit that holds a storage medium that records images, and information (for example, a location) that specifies a medium storage unit that holds a storage medium that records information related to vehicle travel. For example, the user may be informed of the location.

The information related to the running of the vehicle may include, for example, position information, speed information, acceleration information, information indicating the operation status of the vehicle, and the like. This information can be obtained, for example, via the vehicle's OBD connector. The operating status of the vehicle may include, for example, operating status such as whether or not the brake is depressed and whether the turn signal is activated or not.

(21) An event condition, which is a condition for determining that a predetermined event has occurred, is stored in a storage medium held in at least one of the medium storage units;
The control means reads event conditions from a storage medium held in one of the medium storage units, records an image captured by an imaging device on a storage medium held in the other medium storage unit, and It is preferable that the system has a function of recording a mark indicating that the event has occurred in association with the video when the occurrence of an event that satisfies the read event conditions is detected.

The user can quickly find the video he or she wants to check or verify by referring to the landmarks recorded on the storage medium that records the video. This makes it possible to extract useful images from a huge amount of images and make effective use of the images. Since the user only has to store the event conditions that he or she wants to confirm or verify in the storage medium, he or she can easily add or delete event conditions.

The storage medium held in one medium storage unit plays the role of storing event conditions, and the storage medium held in the other medium storage unit records video and points in time when an event that satisfies the event conditions occurs. It plays the role of remembering. The notification means includes information (e.g., position) that specifies the medium storage unit that holds the storage medium that stores the event conditions, and information (e.g., position) that specifies the medium storage unit that holds the storage medium on which the video is recorded. It is a good idea to inform the user.

The event conditions may include conditions for detecting the occurrence of an event that may occur due to, for example, driver fatigue or carelessness. For example, event conditions include deviating from the driving lane, approaching the vehicle in front abnormally, remaining stationary for a certain period of time even though the vehicle in front has started moving, and occurrence of lateral vibration, slipping, etc. be able to. The occurrence of these events can be detected by equipping the vehicle with an advanced driver assistance system (ADAS). By showing the driver the video of the event occurring, the administrator can make the driver aware of the degree of danger and encourage safe driving.

The event condition may include, for example, a condition that a specific person or a specific vehicle is present in the captured video. It is preferable that an image of a specific person or vehicle to be detected is stored in a storage medium, and the control means detects the specific person or vehicle using image authentication technology. When the control means detects a specific person or vehicle, it is preferable that the control means transmits position information of the detected place, video at the time of detection, etc. to a data center (for example, a police server, etc.). The information sent to the data center provides valuable clues to locating the wanted person or vehicle.

The event condition may include, for example, the detection of a vehicle that is moving in a disturbing or dangerous manner (dangerous vehicle). Disturbing or dangerous movements may include, for example, meandering, ignoring traffic lights, and speeding. When the control means detects a dangerous vehicle, it is preferable that the control means transmits the position information of the detected place, the video at the time of detection, etc. to a data center (for example, a police server, etc.). By sharing the presence of a dangerous vehicle among drivers of a plurality of vehicles, it becomes possible to prevent accidents caused by the dangerous vehicle. Drivers of dangerous vehicles can be instructed not to drive dangerously.

The event conditions may include detection of a person in a specific posture, detection of a pedestrian of a specific age, detection of a bicycle, detection of a specific traffic sign, etc. It is possible to easily confirm or verify how the driver was driving when these events occurred. For example, as a person taking a specific posture, it is preferable to include a person with a raised hand, a person holding a selfie stick, etc. For example, the video can be used to verify whether the driver paused when a person raising his or her hand was detected. It is possible to verify whether the driver slows down when a person with a selfie stick is detected. Pedestrians of specific age groups may include children or the elderly. It is possible to verify, for example, whether the driver slows down when a child or an elderly person is detected as a pedestrian. For example, when various traffic signs are detected, it can be verified whether the driver is complying with the traffic rules.

(22) The control means records video in a general-purpose file format on a storage medium held in one of the medium storage units, and records video in a unique format on a storage medium held in the other medium storage unit. It is preferable to use a system that has the function of recording video.

A storage medium on which video is recorded in a general-purpose file format can be removed from the medium storage unit and played back by a general playback device, such as a general-purpose media player of a personal computer. A storage medium on which video is recorded in a unique format can be removed from the medium storage unit and played back using dedicated application software.

The storage medium held in one media storage unit plays the role of recording video in a general-purpose file format, and the storage medium held in the other media storage unit records video in a unique file format. play a role. The notification means may include, for example, information (e.g., location) specifying a medium storage unit that holds a storage medium that records images in a general-purpose file format, and information that specifies a medium storage unit that holds a storage medium that records images in a unique file format. It is preferable to inform the user of information identifying the part (eg, location).

For example, the avi file format may be adopted as a general-purpose file format. Video compression technologies include MPEG2, Motion JPEG, H. 264, H. 265 etc. may be applied.

(23) The control means has a function of initializing the storage medium held in the medium storage unit, and the user performs an operation to initialize the storage medium held in one of the medium storage units. and informs the user through the notification means of information specifying the medium storage unit to be initialized specified by the user and that confirmation of initialization execution is being waited for, and after receiving a confirmed response from the user. , it is preferable to use a system that has a function to execute initialization processing.

It is possible to prevent an unexpected storage medium from being initialized due to a user's operational error. As a result, it is possible to prevent images that one does not want to erase from being erased.

As the information specifying the medium accommodating section to be initialized specified by the user, the control means may display information specifying the medium accommodating section in the form of characters or images on the display section.

(24) The control means records videos having a mutually complementary relationship and identification information associating the two storage media in the storage media held in the two media storage units, and records one of the media When the storage medium on which the identification information is recorded is held only in the storage unit, the system preferably has a function of notifying the user, through the notification means, of the existence of other storage media that complement each other.

When a user attaches or removes a storage medium from the medium accommodating section, it becomes difficult for the user to forget to attach or remove one of the two storage media that have a mutually complementary relationship. It is possible to avoid a situation where two storage media having a mutually complementary relationship are scattered and no useful images can be obtained.

The storage media held in the two media storage units play the role of recording images that are complementary to each other. For example, it is preferable that the storage media held in the two medium storage units have the role of storing identification information for identifying the storage medium to be complemented.

As a mutually complementary relationship, for example, images from a part of the time period are recorded on one storage medium, and images from the remaining time period are recorded on the other storage medium, and the two complement each other and the entire period of time is recorded. It is preferable that the relationship is such that the video over the period of time is configured. It is particularly advantageous to divide the video into pieces on the time axis and record the video into pieces alternately on two storage media.

As a mutually complementary relationship, for example, one storage medium is initialized with a general-purpose format and the other is a storage medium initialized with a unique format, and the images recorded on both are the same. It is good to have a relationship that is . Depending on the device to be played back, the video can be played back by installing a storage medium in a format supported by that device. For example, the FAT format may be adopted as a general-purpose format. For example, a format called YP format may be adopted as a unique format.

(25) The control means has a function of copying the video recorded on the storage medium held in one of the medium storage units to the storage medium held on the other side, and further has the function of copying the video recorded on the storage medium held in one of the medium storage units, and It is recommended that the system has a function to reserve the start of processing.

It takes a long time to copy video recorded over a long period of time to another storage medium. By making a reservation to start the copy process, the copy process can be performed during free time when the user is not using the system.

The storage medium held in one medium storage unit plays the role of recording the original video, and the storage medium held in the other medium storage unit plays the role of a copy destination of the video. The notification means may, for example, provide the user with information (e.g., location) specifying the medium storage unit that holds the storage medium that is the copy source, and information (e.g., location) that specifies the medium storage unit that holds the storage medium that is the copy destination. It's good to let them know.

It is preferable to allow the user to specify the copy source video. As the copy source video, it is preferable to allow event-recorded video to be selected, and to disable constantly-recorded video from being selectable. Generally, constantly recorded video has a significantly larger capacity than event recorded video, so it takes a longer time to copy. By disabling a constantly recorded video from being selected as a copy source, it is possible to avoid a situation where copying takes an unexpectedly long time.

(26) Furthermore, the housing includes a housing that houses the medium storage section and the control means, and an insertion port through which the storage medium passes when the storage medium is held in the medium storage section is provided in the housing for each medium storage section. It is located on the body,
The two medium storage units are configured to hold storage media of different sizes, and the sizes of the insertion openings are different from each other corresponding to the difference in size of the storage media to be held. Ori,
Preferably, the notification means is a system that notifies the user of the role of the storage medium held in the medium storage section by having the insertion slots have different sizes.

The user can see the size of the insertion port and become aware of the role of the storage medium that is inserted into the medium storage unit through the insertion port. For example, a user may realize that a storage medium that is inserted through a large insertion port is less likely to be lost when being carried around, and as a result, the user realizes that a storage medium that is installed through the insertion port is for portable use. On the contrary, it is noticed that the storage medium inserted through the smaller insertion opening is in principle always intended for use while being installed in the medium receptacle.

(27) Furthermore, the housing includes a housing that houses the medium storage section and the control means, and an insertion port through which the storage medium passes when the storage medium is held in the medium storage section is provided in the housing for each medium storage section. It is located on the body,
One of the insertion ports has a configuration that makes it more difficult for a storage medium to pass through than the other insertion port,
The notification means may be a system that notifies the user of the role of the storage medium held in the medium storage section based on the difference in the configuration of the insertion slot.

By sensing that it is difficult to pass the storage medium through the insertion slot when installing the storage medium, the user can become aware of the role of the storage medium held in the medium storage section. For example, if it is difficult to pass the storage medium through the insertion slot, the user must ensure that the storage medium that is inserted into the medium storage unit after passing through the insertion slot is not intended to be carried around, but is intended to be used while attached in principle. I notice. On the other hand, when it is easy to pass through the insertion slot, the user notices that the storage medium that is inserted into the medium storage unit after passing through the insertion slot is for portable use.

For example, an insertion port through which a storage medium is difficult to pass may be provided with a cover that can be opened and closed, and an insertion port through which a storage medium may be easily passed may be configured to be open at all times.

(28) Further, it has a casing that houses the medium accommodating section and the control means,
When the housing is mounted on a vehicle, one of the medium accommodating portions is located at a position where it is more difficult to mount a storage medium than the other medium accommodating portion,
The notification means may be a system that notifies the user of the role of the storage medium held in the medium storage unit based on the difference in the position of the medium storage unit.

When installing a storage medium, the user can notice the role of the storage medium installed in the medium storage section by sensing whether it is difficult or easy to install the storage medium due to the difference in the position of the medium storage section. . For example, when it is difficult to attach a storage medium, the user notices that the storage medium attached to the medium storage section is not intended to be carried, but is basically intended to be used while attached. Conversely, when the storage medium is easy to install, the user notices that the storage medium installed in the medium storage unit is for portable use.

For example, when the storage medium is installed in a vehicle, there is an empty space adjacent to the surface of the casing that is the size of the area from the wrist of a typical adult male. This includes areas that are secured. For example, it is preferable to use a sphere with a diameter of 10 cm, which corresponds to the wrist of a typical adult male. An example of a location where it is difficult to mount a storage medium is an area where such free space is not secured.

For example, the position where it is difficult to attach the storage medium may be the surface of the casing facing the front of the vehicle, upward, or somewhere in between. The storage medium may be easily attached to the surface of the casing facing left and right, or toward the interior of the vehicle, for example. The surface facing the bracket for attaching the casing to the vehicle may be located at a position where it is difficult to mount the storage medium.

The control means may record, for example, an image captured by the imaging device during the parking period on a storage medium held in a medium storage section located at a position where it is difficult to attach the storage medium. To prevent a situation in which a driver accidentally removes a storage medium from a medium accommodating part when parking a vehicle, making it impossible to record video during the parking period.

(29) The control means has a function of detecting that an error has occurred in each of the storage media held in the two medium storage units, and has an error in the storage medium held in one of the medium storage units. When it detects that an error has occurred and that the storage medium in which the error occurred has been removed from the medium storage unit, it outputs a message to the output means prompting the user to remove the other storage medium as well and submit it to maintenance personnel. It would be good to have a system that allows

By inspecting not only the storage medium where an error has occurred but also the storage medium where no error has occurred, it becomes easier to isolate the cause of the error. Errors include, for example, storage medium failure, writing failure, and exceeding a specified number of overwrites.

(30) The storage medium held in the medium storage unit has a mechanical write-protect switch that prohibits write operations;
The medium storage unit has a function of operating a write-protection switch of the storage medium held therein to set it in a write-protection state,
Preferably, the control means is a system having a function of controlling the medium storage unit and setting a write-protection switch of the storage medium to a write-protection state when detecting that a predetermined event has occurred.

By setting the storage medium in a write-protected state, it is possible to prevent the video at the time of event occurrence from being overwritten. It is preferable that a mechanical switch is used as the write-inhibit switch, and that the medium accommodating section has a function of driving the mechanical switch. The function of driving a mechanical switch can be achieved by, for example, a solenoid actuator.

(31) When a sales promotion video is recorded on a storage medium held in one of the medium storage units,
The control means records an image captured by an imaging device displayed at a dealership instead of an imaging device mounted on a vehicle on a storage medium held in the other medium storage section, and records the video image captured by an imaging device displayed at a dealership, and when a predetermined period of time has elapsed. It is preferable that the system has a function of stopping recording and displaying the recorded image on a display means.

The store can increase the consumer's desire to purchase by displaying promotional images on the display means. Furthermore, the functionality of the system can be easily communicated to consumers. The consumer can check the image taken at the store through the display means. This allows consumers to experience the functionality and performance of the system.

The storage medium held in one medium storage section plays the role of recording videos for sales promotion, and the storage medium held in the other medium storage section is used to capture images using an imaging device displayed at the store. It plays the role of recording the images that are captured. The notification means may include, for example, information (e.g., location) specifying the medium storage unit that holds the storage medium that records the promotional video, and a memory that records the video captured by an imaging device displayed at the store. It is preferable to inform the user of information (for example, location) specifying the medium container holding the medium.

It is a good idea to add a video at the end of the promotional video to let consumers know that filming is about to begin. The consumer sees this video, learns that imaging will begin, and can begin to point the imaging device at the object he or she wishes to image. The control means may end the imaging after a certain period of time, automatically reproduce the video, and display it on the display means. When the reproduction of the captured video is completed, it is preferable to return to the reproduction of the sales promotion video.

(32) The notification means may be a system having a function of notifying the user of the mutual relationship of information stored in the storage media held in the two medium storage units.

The user can know the mutual relationship between the information stored in the storage media held in the two media storage units. This increases convenience for the user.

Next, an example will be given of the mutual relationship of information stored in the two storage media. First, a case where the information stored in two storage media are both images will be exemplified.

As for the mutual relationship between the images, it is preferable to establish a relationship in which two images form a pair to make sense, and one image alone does not make sense or the intended purpose of use cannot be achieved. When information stored on two storage media has this relationship, the notification means may notify the user that the information cannot be used on only one storage medium. Since the user is prompted to carry the two storage media as a set, it is less likely that the user will forget to carry one storage medium and become unable to use the video.

As for the mutual relationship between the images, it is preferable that the imaged object and the imaged time are the same, and that either image has a value of being used independently. Such relationships include, for example, the relationship that the recording formats on the two storage media are exactly the same, the relationship that the formats of the two storage media are different, the frame rate and resolution of the video recorded on the two storage media. The relationship is that the setting conditions are different, and the relationship that one records all the images acquired during the imaging period, and the other records only the images before and after the occurrence of a predetermined event. An example of this is that both record video before and after the event occurs, but the types of events are different. When the information stored in the two storage media has this relationship, it is preferable that the notification means informs the user that the video can be used alone and the difference between the two videos. The user can determine which storage medium it is preferable to view video according to the purpose of use.

As for the mutual relationship between the images, it is preferable that the objects to be imaged are the same, but the images were taken at different times, so the purposes of use of the images are different. An example of such a relationship is a relationship in which images are captured by an imaging device mounted on a vehicle traveling on a prescribed route, but the images are captured at different dates and times. When the information stored in the two storage media has this relationship, it is preferable that the notification means notifies the driver of the vehicle of the time when the video is captured. Since the driver of the vehicle can check previously recorded images while driving on a predetermined route, it is less likely that he or she will make a mistake on the route.

The mutual relationship between the images may be such that the images are images of different objects to be imaged at the same time using different imaging devices. Such relationships include, for example, the relationship between the image in front of the vehicle and the image inside the vehicle, the relationship between the image in front of the vehicle and the image behind the vehicle, the relationship between the image in front of the work vehicle and the image of the work target area, etc. can be mentioned. When the information stored in the two storage media has this relationship, it is preferable that the notification means notifies the user that the two images were captured at the same time. The user can recognize that it is meaningful to play the two videos in synchronized time.

The mutual relationship between the images may be such that the images are captured using the same imaging device under different environments. Examples of such a relationship include images captured by mounting an imaging device on a vehicle, and images captured by taking the imaging device out of the vehicle and attaching it to equipment for outdoor sports. When the information stored in the two storage media has this relationship, it is preferable that the notification means notifies the user that the two images were captured under different environments. The user can know that different videos captured under different environments are recorded on the two storage media. Furthermore, it is particularly preferable that the notification means informs which storage medium and in which environment the captured video is recorded. The user can know in which storage medium an image captured under which environment is recorded.

The mutual relationship between the images is that, although the images were captured using the same imaging device, the image recorded on one storage medium is a composite image in which an additional image is superimposed on the captured image. It's good to do that. The additional image may be, for example, a warning image issued when a vehicle approaches a radar device. When the images recorded on two storage media have this relationship, the notification means notifies the user that the image recorded on one storage medium is a composite image in which an additional image is superimposed. good.

As for the mutual relationship between the two videos, it is recommended that the two videos be used to achieve a common purpose, but one is a video that has been prepared in advance, and the other is a video that is recorded on the spot. . As an example of such a relationship, one example is a relationship where one is a promotional video explaining the functions and performance of the system, and the other is a video captured on the spot. When the information stored in the two storage media has this relationship, the notification means notifies the user that one storage medium is a pre-prepared video and the other storage medium is being recorded. Good. The user can know that when the video on one storage medium is prepared in advance, the other storage medium should be used for recording. Consumers can learn about the system's outline and performance by watching promotional videos, and can actually experience the system's operation and performance by watching videos recorded on the spot.

The mutual relationship between the videos may be such that one video is captured by an imaging device, and the other video is a template image for extracting a specific image from the video captured by the imaging device. The notification means preferably informs the user that the image recorded on one storage medium is a template image for image recognition, and the other storage medium is a storage medium for image recording. The user can extract various images by adding or modifying the template image.

Next, a case will be described in which the information stored in one of the two storage media is a video, and the information stored in the other is data other than video.

The mutual relationship between the pieces of information may be such that one piece of information is an image captured by an imaging device, and the other piece of information is information (key information) indicating authority to access the storage medium. The notification means may notify the user that the information stored in one of the storage media is information indicating access authority. The user may know that a key storage medium is required to grant certain access rights in order to access the video.

The mutual relationship between the pieces of information may be such that one piece of information is an image captured by an imaging device mounted on a vehicle, and the other piece of information is log data that records vehicle information in chronological order. The notification means preferably informs the user that one of the images is an image captured by an imaging device mounted on the vehicle, and the other is log data. The user can learn that useful information regarding the running of the vehicle can be obtained by combining the video and log data respectively recorded on the two storage media.

The user can remove the storage medium in which the image captured by the imaging device mounted on the vehicle is stored from the medium storage unit and use it in another device. Furthermore, the user can recognize the role of the storage medium that is or will be held in the medium storage unit by the notification from the notification means. A user who recognizes the role of the storage medium can appropriately handle the storage medium according to its role when attaching or removing the storage medium to or from the medium storage unit or after removing the storage medium from the medium storage unit. This increases convenience for the user.

FIG. 1A is a perspective view of the system according to the first embodiment as viewed obliquely from the rear, and FIG. 1B is a diagram showing the system, windshield, dashboard, etc. when the system is mounted on a vehicle. FIG. 2 is a block diagram of a system according to the first embodiment. FIGS. 3A and 3B are timing charts showing the timing of recording images captured by a camera onto the SD cards held in the respective SD card readers, and the timing of transmitting the images to an external device via a communication circuit. . FIG. 4 is a diagram showing an example of an image displayed on the display of the system according to the first embodiment. FIG. 5A is a block diagram of part of the controller of the system according to the second embodiment, and FIG. 5B is a timing chart showing the timing of transferring video to the SD card. FIG. 6 is a flowchart of processing executed by the controller of the system according to the third embodiment. FIG. 7A is a diagram showing an example of an image displayed on the display of the system according to the third embodiment, and FIG. 7B is a diagram showing an example of the video recorded on one SD card. FIGS. 8A and 8B are conceptual diagrams of video frames respectively recorded on two SD cards by the system according to the fourth embodiment. FIG. 9 is a diagram showing an example of an image displayed on the display of the system according to the fourth embodiment. FIG. 10 is a flowchart of processing executed by the controller of the system according to the fifth embodiment. FIG. 11 is a flowchart of processing executed by the controller of the system according to the sixth embodiment. FIG. 12A is a diagram showing an example of an image displayed by the controller on the display when the SD card installed in one SD card reader is in an operating state, and FIG. 12B is a diagram showing an example of an image displayed on the display when the SD card installed in one SD card reader is 5 is a diagram showing an example of an image displayed by the controller on the display 11 when the installed SD card is in an operating state. FIG. FIG. 13 is a diagram showing an example of an image displayed on the display 11 by the controller of the system according to the seventh embodiment. FIG. 14 is a diagram showing an example of an image displayed on the display 11 by the controller of the system according to the eighth embodiment. FIG. 15 is a diagram showing an example of an image displayed on a display when a system according to a modification of the eighth embodiment allows a user to select a copy source video. FIG. 16A is a functional block diagram of a part of the system according to the ninth embodiment, and FIG. 16B shows what the controller displays on the display when an SDIO card with a wireless communication function is installed in one SD card reader. FIG. 3 is a diagram showing an example of an image. FIG. 17 is a diagram showing an example of an image displayed on the display by the controller of the system according to the tenth embodiment to notify the user of the recording destination. FIG. 18A is a diagram showing an image on a display displaying the correspondence between an event and a recording destination SD card in the system according to the eleventh embodiment, and FIG. 18B is a diagram showing a modification of the eleventh embodiment. FIG. 2 is a diagram illustrating an example of an image displayed on a display by the controller of the system. FIG. 19A is a diagram showing an example of an image displayed on the display of the system according to the twelfth embodiment, and FIG. 19B is a diagram showing a frame sequence of video recorded on one SD card. FIG. 20 is a diagram showing an example of an image displayed on the display of the system according to the thirteenth embodiment. FIG. 21 is a diagram showing an example of a setting window when setting recording conditions on an SD card using a personal computer in the thirteenth embodiment. FIG. 22 is a diagram showing an example of a menu screen displayed on a display of a system according to a modification of the thirteenth embodiment. FIG. 23A is a block diagram showing some functions of the system according to the fourteenth embodiment, and FIG. 23B shows an image on a display showing the correspondence between two cameras and two SD card readers. FIG. 24A and 24b are schematic diagrams of a system according to a modification of the fourteenth embodiment. FIG. 25 is a diagram showing an example of an image displayed on the display of the system according to the fifteenth embodiment. FIG. 26 is a flowchart of the operation of the system according to the 16th embodiment. FIG. 27 is a diagram showing an example of an image displayed on the display of the system according to the sixteenth embodiment. FIG. 28 is a mode transition diagram between operation modes of the system according to the seventeenth embodiment. FIG. 29 is a diagram showing an example of an image displayed on the display of the system according to the seventeenth embodiment. FIG. 30 is a diagram showing an example of an image displayed on the display of the system according to the eighteenth embodiment. FIG. 31 is a diagram showing an example of an image displayed on the display of the system according to the nineteenth embodiment. FIG. 32 is a diagram showing an example of an image displayed on the display of the system according to the twentieth embodiment. FIG. 33 is a perspective view of a system according to the twenty-first embodiment and a plan view of an SD card installed in the system. FIG. 34A is a perspective view of a system according to the twenty-second embodiment, and FIG. 34b is a perspective view of a system according to a modification of the twenty-second embodiment. FIG. 35 is a perspective view of a system according to the twenty-third embodiment. FIG. 36 is a diagram showing an example of an image displayed on the display of the system according to the twenty-fourth embodiment. FIG. 37 is a block diagram showing partial functions of the system according to the twenty-fifth embodiment.

Embodiments of the present invention will be specifically described using the following examples.

[First example]
A drive recorder will be described as a first embodiment of a system for recording video with reference to FIGS. 1A to 4.

FIG. 1A is a perspective view of the system 1 according to the first embodiment, viewed obliquely from the rear. An SD card insertion slot 10a and an SD card insertion slot 10b are provided on one side of the housing of the system 1. A display 11 and a plurality of operation buttons 12 are provided on the back of the housing. A joint rail 13 is provided on the upper surface of the housing. Although not shown in FIG. 1A, a camera lens is provided on the front of the housing. A DC jack is provided on the side surface that does not appear in FIG. 1A, and a speaker and an HD output terminal are provided on the bottom surface.

A camera including a lens captures an image in front of a vehicle, for example. The DC jack is a jack for connecting to a DC power source via a power cable. The SD card insertion slots 10a and 10b are slots for inserting an SD card. A speaker outputs sound or audio. The HD output terminal is a terminal for connecting to other information equipment via a cable. The joint rail 13 is for attaching a joint for mounting the system 1 on a vehicle. Display 11 displays various images. The operation button 12 is used by the user to input various commands to the system 1.

FIG. 1B is a diagram showing the system 1, windshield 3, dashboard, etc. when the system 1 is installed in a vehicle. The system 1 is disposed at a position on the passenger seat side adjacent to the rearview mirror 4 near the center in the left-right direction at the upper part of the windshield 3 of the vehicle. The system 1 is attached and fixed to the windshield 3 using a mounting member such as double-sided tape. A DC jack of the system 1 is connected to a cigarette lighter socket 5 via a power cable 6. When the accessory power source of the vehicle is turned on, power is supplied to the system 1 from the cigarette lighter socket 5.

FIG. 2 is a block diagram of the system 1 according to the first embodiment. The system 1 includes a controller 20, a camera 17, a database 21, a GPS receiver 16, SD card readers 14a and 14b, an acceleration sensor 18, a speaker 15, a display 11, an operation button 12, and a communication circuit 19. Note that the SD card readers 14a and 14b should be strictly referred to as "SD card reader/writers," but in this specification, they are simply referred to as "SD card readers."

The speaker 15 and the display 11 function as notification means for notifying the user of various information. The speaker 15 issues warnings and various information through sounds and voices under the control of the controller 20. The display 11 displays various information in the form of images based on the control of the controller 20. The operation button 12 functions as an input means for the user to give various commands to the system 1.

The camera 17 functions as an imaging device that captures a moving image within the angle of view (within the field of view). The camera 17 imports the captured moving image into the controller 20 as video data. Based on the video data input from the camera 17, the controller 20 records video on an SD card held in at least one of the SD card readers 14a and 14b.

The database 21 is stored, for example, in a nonvolatile memory (eg, EEPROM) externally attached to the controller 20. The database 21 includes, for example, map data.

The GPS receiver 16 detects position information of the own vehicle at the current time based on instructions from the controller 20. The position information includes the time, speed of the vehicle, longitude, latitude, altitude, etc. determined based on signals from GPS satellites. The controller 20 performs processing to record the history of these positional information.

The SD card readers 14a and 14b function as medium storage units that hold SD cards 22a and 22b, respectively. The SD cards 22a and 22b function as removable storage media. A user can insert SD cards 22a and 22b into SD card readers 14a and 14b, respectively, through SD card insertion slots 10a and 10b (FIG. 1A). The SD card readers 14a and 14b read data from the SD cards 22a and 22b held in the SD card readers 14a and 14b, or store data in the SD cards 22a and 22b, respectively, based on control from the controller 20. .

As the acceleration sensor 18, a three-axis type sensor is used that detects acceleration and inclination in each of three axes (x-axis, y-axis, and z-axis). Measured values by the acceleration sensor 18 are always taken into the controller 20. The controller 20 acquires three-axis acceleration information, for example, every 10 ms.

The controller 20 includes a well-known CPU 20a, memories such as a ROM 20b and a RAM 20c, a timer 20d, and other peripheral circuits. Various programs are stored in the ROM 20b of the controller 20. The controller 20 realizes various functions by executing these programs. The various programs include an operating system (OS), a GPS information processing program, a video processing program, a communication processing program, and the like.

By executing the GPS information processing program, the controller 20 can store the GPS information received by the GPS receiver 16 in the SD cards 22a and 22b held in the SD card readers 14a and 14b, respectively. By executing the video processing program, the controller 20 can record the video captured by the camera 17 in a predetermined recording area of the SD card in association with the time. The controller 20 has a function of accessing the SD cards 22a and 22b held in the SD card readers 14a and 14b, respectively. It functions as a control means that has the function of recording images.

The display 11 functions as a notification means for informing the user of the roles played by the SD cards 22a and 22b accessed by the controller 20.

The communication circuit 19 functions as a communication means for wirelessly communicating with external devices such as a server, a personal computer, a smart phone, a tablet terminal, and the like. The controller 20 has a function of transmitting data such as video to an external device via the communication circuit 19 by executing a communication processing program. As the communication circuit 19, it is preferable to use a communication circuit compliant with, for example, the WiFi standard, a short-range wireless communication standard such as Bluetooth (registered trademark), a mobile communication system standard such as LTE or 4G, or the like. The short-range wireless communication standard can be applied, for example, to communication between work vehicles (forklifts, etc.) operating within a premises and external devices. Mobile communication system standards can be applied, for example, to communications between vehicles that move within a wider area and external equipment.

3A and 3B show the timing of recording images captured by the camera 17 onto the SD cards 22a and 22b held in the SD card readers 14a and 14b, respectively, and transmitting the images to external equipment via the communication circuit 19. FIG.

FIG. 3A shows a timing chart of a period during which the communication line is in a communicable state. The controller 20 has a function of alternately recording images captured by one camera 17 onto the SD cards 22a and 22b at certain time units. In the example shown in FIG. 3A, the controller 20 records images captured during periods T1, T3, T5, T7, . . . on one SD card 22a, and records images captured during periods T2, T4, T6, T8, . The captured video is recorded on the other SD card 22b. Further, the controller 20 transmits the video to external equipment in real time via the communication circuit 19.

FIG. 3B shows a timing chart when the communication line via the communication circuit 19 is temporarily interrupted. In FIG. 3B, the communication line goes into a communication-disabled state at the start time t1 of period T4, is restored at time t2 in the middle of period T5, becomes communication-disabled at time t3 in the middle of period T6, and becomes communication-disabled during period T7. An example is shown in which the communication line is restored at time t4 in the middle of .

Even during periods when the communication line is interrupted, the controller 20 records images alternately on the SD cards 22a and 22b. During the period when the communication line is interrupted, the controller 20 does not transmit images via the communication circuit 19. For example, the controller 20 records videos A and B captured during the period from t1 to t2 on the SD card 22b, and records video C on the SD card 22a, but does not transmit it to an external device. Video D captured during the period from t3 to t4 is recorded on the SD card 22b, and video E is recorded on the SD card 22a, but is not transmitted to an external device.

Of the videos recorded on the SD card 22b, the controller 20 reads out the video A that has not been transmitted in real time via the communication circuit 19 during the period T5 during which the video is recorded on the other SD card 22a, and sends the video A to the communication circuit 19. to an external device via The video B that could not be read and transmitted during the period T5 and the video D that was recorded during the period T6 are read from the SD card 22b during the period T7 and transmitted to the external device via the communication circuit 19. The video C that could not be transmitted during the period T5 is read from the SD card 22a during the next period T6 and transmitted to the external device via the communication circuit 19. Similarly, the video E that could not be transmitted during the period T7 is read from the SD card 22a during the next period T8 and transmitted to the external device via the communication circuit 19. During the period T5 to T8, the controller 20 simultaneously transmits real-time video and reads and transmits the video recorded on the SD card 22a or 22b.

In this way, the controller 20 writes images to one SD card 22a and reads images from the other SD card 22b (periods T1, T3, T5, T7...), and from one SD card 22a to another. A state (periods T2, T4, T6, T8, . . . ) of reading the video and writing the video to the other SD card 22b is created alternately in time.

The controller 20 displays on the display 11 an image that informs the user of the roles of the two SD cards 22a and 22b described above.

FIG. 4 shows an example of an image displayed on the display 11. The screen of the display 11 is divided into a mode display area 31 located at the upper end, a time display area 32 located at the lower end, and a video display area 30 sandwiched between the two. The controller 20 displays the video imaged by the camera 17 in the video display area 30 in real time. Icons indicating various modes are displayed in the mode display area 31. The current time is displayed numerically in the time display area 32.

An icon 55 is displayed in the mode display area 31, indicating that the video imaged by the camera 17 will be recorded on one of the SD cards 22a and 22b. The switch indicated by the icon 55 has been switched to the icon representing the SD card that is currently recording video. When the SD card for recording video is switched, the switch within the icon 55 is also switched.

[Effects of the first embodiment]
Next, the excellent effects of the first embodiment will be explained. The user can remove the SD cards 22a and 22b in which images captured by the camera 17 mounted on the vehicle are stored from the SD card readers 14a and 14b and use them in other devices. Furthermore, by looking at the icon 55, the user can recognize the role of the SD cards 22a and 22b held or to be held in the SD card readers 14a and 14b. A user who recognizes the role of the SD cards 22a and 22b can insert or remove the SD cards 22a and 22b from the SD card readers 14a and 14b, or after removing the SD cards 22a and 22b from the SD card readers 14a and 14b. 22a and 22b can be handled appropriately according to their roles. This increases convenience for the user.

In the first embodiment, videos recorded on the SD cards 22a and 22b can be transmitted to external equipment via wireless communication. Therefore, without removing the SD cards 22a and 22b from the system 1, the video can be played back on an external device. In this specification, video data may be simply referred to as video.

Generally, when reading data from an SD card while writing data to it, the data transfer speed becomes slow. For example, if an attempt is made to read and transmit the unsent video C recorded on the SD card 22a shown in FIG. 3B during the video recording period T5 on the SD card 22a, the data transfer speed to the SD card 22a will slow down. It ends up. If the writing speed becomes slower than the speed required to record the video, the video will not be able to be recorded properly. In the first embodiment, while video is being recorded on the SD card 22a (period T5), the video C recorded on the SD card 22a is not read out, and the video is recorded on another SD card 22b. Since the video C that could not be transmitted is read and transmitted during the period T6, it is possible to suppress a decrease in writing and reading speeds.

Note that the writing of video to one SD card 22a and the reading of video from the other SD card 22b can be performed in parallel by the DMA controller.

Even if the video cannot be transmitted in real time due to a communication error or the like, the video can be read later from the SD cards 22a and 22b and transmitted. The SD cards 22a and 22b play the role of recording video and also serve as storage means for storing the video transmitted via the communication circuit 19 until the transmission is completed.

When leaving the video recorded on the SD cards 22a and 22b in the buffer memory in the controller 20 until the transmission via the communication circuit 19 is completed, the video is stored in the buffer memory without reading the video from the SD cards 22a and 22b. It is possible to read and send images from the . However, when adopting this method, all images captured during periods when the communication line is unavailable must be retained in the buffer memory, so a large capacity buffer memory must be secured. It won't happen. In the first embodiment, since the video can be deleted from the buffer memory at the time the video is recorded on the SD cards 22a and 22b, it is possible to suppress an increase in the capacity of the buffer memory. Furthermore, since the buffer memory is volatile, the video in the buffer memory will be erased if the power supply is stopped. In the first embodiment, since images are recorded on the non-volatile SD cards 22a and 22b, unsent images will not be erased even if the power supply is stopped.

The capacity of video recorded within one time unit is sufficiently larger than the capacity of a DMA transfer block. The time unit for switching between the SD cards 22a and 22b for recording video may be, for example, in the range of several minutes to several tens of minutes.

[Modification of the first embodiment]
Next, a modification of the first embodiment will be described. In the first embodiment, the video imaged by the camera 17 is a moving image. Image compression technology may be used when recording moving images on the SD cards 22a and 22b. For example, a moving image may be composed of I frames (key frames) and P frames. When transmitting via the communication circuit 19, it is preferable to use an I frame and a plurality of P frames following it as an inseparable minimum unit, and to transmit each minimum unit or a plurality of minimum units together as one transfer unit.

For example, during period T5 shown in FIG. 3B, the CPU 20a performs both processing of writing video to the SD card 22a and reading video from the SD card 22b. Therefore, the load on the CPU 20a increases. If the processing capacity of the CPU 20a is not sufficient, the video may be read from the SD cards 22a and 22b and transmitted after the real-time transmission ends.

Furthermore, during the period T5 shown in FIG. 3B, it is necessary to transmit both the video to be transmitted in real time and the video A read from the SD card 22b, so a high data transfer rate is required on the communication line. It will be done. If the data transfer rate of the communication line is not sufficient, it is recommended to reduce the amount of data transferred by increasing the compression rate of the video to be transmitted.

[Second example]
Next, a system according to a second embodiment will be described with reference to FIGS. 5A and 5B. Hereinafter, explanations of the configurations common to those of the first embodiment will be omitted.

FIG. 5A is a block diagram of a portion of the controller 20 of the system 1 according to the second embodiment. The controller 20 includes a DMA controller 20e and a buffer memory 20g that correspond to one SD card reader 14a, and a DMA controller 20f and a buffer memory 20h that correspond to the other SD card reader 14b. Buffer memories 20g and 20h temporarily store videos to be recorded on SD cards 22a and 22b, respectively.

The CPU 20a has a function of writing the video to be recorded on the SD card 22a into the buffer memory 20g, and then transmitting the video in the buffer memory 20g to the SD card 22a by giving a command to the DMA controller 20e. Similarly, after writing the video to be recorded on the other SD card 22b into the buffer memory 20h, the CPU 20a provides a function to transfer the video in the buffer memory 20h to the SD card 22b by giving a command to the DMA controller 20f. have

FIG. 5B is a timing chart showing the timing of transferring video to the SD cards 22a and 22b. The controller 20 acquires images A to E from the camera 17 in chronological order. Each of videos A to E is a unit of data transfer by DMA.

After writing video A into buffer memory 20g, CPU 20a gives a command to DMA controller 20e (time t1) to start transferring video A to SD card 22a. In parallel, the CPU 20a writes video B into the buffer memory 20h. Before the transfer of video A ends (time t3), the CPU 20a gives a command to the DMA controller 20f (time t2) to start transferring video B to the SD card 22b. Even after that, the transfer of video C is started before the transfer of video B is completed.

In the second embodiment, the two SD cards 22a and 22b record short-time video in which temporally continuous video is divided into pieces on the time axis. Together, they play the role of composing a temporally continuous image.

[Effects of the second embodiment]
Next, the excellent effects of the second embodiment will be explained. For example, when the process of transferring the video in one buffer memory 20g to the SD card 22a is completed (t3 in FIG. 5B), even if untransferred video remains in the other buffer memory 20h, the video transfer is completed. New video can be buffered in the buffer memory 20g. In this way, by writing one video to the two SD cards 22a and 22b in a distributed manner, the apparent transfer speed can be increased. This makes it possible to record video at a high frame rate and resolution that cannot be written in time with the writing speed of a single SD card. For example, ultra-high-quality 8K video cannot be recorded in real time on a regular SD card because the writing speed of the SD card becomes a bottleneck. In the system according to the second embodiment, the bottleneck in the writing speed of the SD card can be eliminated.

[Modification of the second embodiment]
Even when recording videos by distributing them to two SD cards 22a and 22b, if the bottleneck of writing speed cannot be resolved, it is preferable to use three or more SD cards.

In the second embodiment, buffer memories 20g and 20h are prepared for each of the SD card readers 14a and 14b, but the memory space in one buffer memory is divided into an area for one SD card reader 14a and an area for the other SD card reader 14a. It may also be divided into an area for the reader 14b.

[Third example]
Next, a system according to a third embodiment will be described with reference to FIG. Hereinafter, descriptions of configurations common to those of the plurality of embodiments described above will be omitted.

FIG. 6 is a flowchart of processing executed by the controller 20 of the system 1 according to the third embodiment. When the system is started by turning on the power of the vehicle, the controller 20 (FIG. 2) transfers the image captured by the camera 17 (FIG. 2) to the SD card held in one SD card reader 14a. 22a (step SA1).

Next, the controller 20 determines whether the current position of the vehicle satisfies the alarm issuing conditions (step SA2). For example, the controller 20 determines that the alarm issuing condition is satisfied when the distance from the current vehicle position to the radar speed control device becomes less than or equal to the determination threshold. For example, 500 m, 1 km, etc. may be adopted as the determination threshold value.

If the controller 20 determines that the alarm issuance conditions are met, the controller 20 synthesizes an image representing the alarm information with the image captured by the camera 17 to generate a composite image (step SA3). The warning information includes, for example, information indicating the distance to a radar-type speed control device, and information issued to the driver to call attention to the driver, such as information issued to the driver to urge the driver to reduce the speed. The controller 20 generates an image representing the alarm information. Controller 20 displays this composite image on display 11 (step SA4). Thereafter, the composite image is recorded on the SD card 22b held in the SD card reader 14b (step SA5).

FIG. 7A shows an example of an image displayed on the display 11. The controller 20 displays the composite image in the video display area 30. An image 34 indicating alarm information is combined with a video 33 captured by the camera 17. In the example shown in FIG. 7A, the image indicating the warning information includes text information indicating that the distance from the own vehicle to the radar speed camera is 500 meters.

If it is determined in step SA2 that the alarm issuing conditions are not met, the image 33 captured by the camera 17 is displayed on the display 11 (step SA6). Then camera 1
7 is recorded on the SD card 22b held in the SD card reader 14b (step SA7).

FIG. 7B shows an example of the video 33 recorded on the SD card 22b. This video 33 is a video captured by the camera 17 that has not undergone any image synthesis processing. Although the video 33 recorded on the SD card 22b has not been subjected to image composition processing, it is preferable to perform video compression processing.

After step SA5 or SA7, controller 20 determines whether to end the process (step SA8). For example, if the power of the vehicle is turned off, it is determined that the process is to end. If the process is not completed, the processes from step SA1 to step SA8 are repeated.

[Effects of the third embodiment]
Next, the excellent effects of the third embodiment will be explained. Users can use the composite image for various purposes when checking the video recorded while the vehicle is running after driving, and can leave the unprocessed video as is on the other storage medium. can. When playing the video, the composite image and the unprocessed video can be compared. The person in charge of managing the vehicle can check what kind of driving the driver was doing when the warning was issued. The unprocessed video provides a detailed understanding of the situation surrounding the vehicle at the time of the alarm. Furthermore, since it can be assumed that unaltered images have not been tampered with, they are considered to have higher evidentiary value than synthetic images.

[Modification of the third embodiment]
The image to be superimposed on the image captured by the camera 17 may be another image generated by a computer, in addition to the image indicating the warning information. The computer-generated image may be an image displayed by a car navigation system, for example, a map of the surroundings of the vehicle's current position at the time the warning is issued. A computer-generated image may be made semitransparent and superimposed on the video imaged by the camera 17. If the computer-generated image is made semi-transparent, the image captured by the camera 17 can be confirmed even in the overlapping portion without reproducing the unprocessed image.

It is preferable to record the alarm information as an image by superimposing it on the video, and also emit a sound to notify the alarm and record the audio information. For example, it is preferable to output a voice saying "500 meters to the H system. Please reduce your speed to 60 km or less" and record this voice information on the SD card 22b. For example, the SD card 22a that stores unprocessed video may record audio picked up by a microphone in the vehicle, and the SD card 22b that stores the composite image may record only the audio of the alarm.

[Fourth example]
Next, the system 1 according to the fourth embodiment will be described with reference to FIGS. 8A, 8B, and 9. Hereinafter, descriptions of configurations common to those of the plurality of embodiments described above will be omitted.

8A and 8B are conceptual diagrams of video frames recorded on the SD cards 22a and 22b, respectively. The controller 20 (FIG. 2) has a function of recording images captured by the camera 17 (FIG. 2) on SD cards 22a and 22b at different frame rates (number of frames per unit time). For example, video is recorded on one SD card 22a at a frame rate of 30 fps, and video is recorded on the other SD card 22b at a frame rate of 5 fps.

FIG. 9 shows an example of an image displayed on the display 11. The controller 20 (FIG. 2) displays an icon 37 indicating the frame rate in the mode display area 31 of the display 11, indicating that the video imaged by the camera 17 will be recorded on the SD cards 22a and 22b. In the icon 37, frame rates are displayed as numerical values arranged in two rows, upper and lower. The frame rate value displayed in the upper row indicates the frame rate of the video recorded on the SD card 22b inserted and removed through the upper SD card insertion slot 10b (FIG. 1A), and the frame rate value displayed in the lower row indicates the frame rate of the video recorded on the SD card 22a inserted and removed through the lower SD card insertion slot 10a (FIG. 1A). The display 11 functions as a notification means for informing the user that the SD cards 22a and 22b are responsible for recording video at frame rates of 30 fps and 5 fps, respectively.

[Effects of the fourth embodiment]
Next, the excellent effects of the fourth embodiment will be explained. The SD card 22b that records under recording conditions with a low frame rate can be used for long-term recording, and the SD card 22a that records under recording conditions with a high frame rate can store recorded video. It can be used for more detailed analysis. By looking at the icon 37 displayed on the display 11, the user can easily determine which of the SD card readers 14a and 14b to view the image stored in the SD card, depending on the purpose of using the image. can.

The SD card 22b for long-time recording has a longer lifespan because it is rewritten fewer times than the SD card 22a for detailed analysis. For example, even if the SD card 22a for detailed analysis has exceeded its lifespan and no video is recorded, the video remains on the SD card 22b for long-term recording. Furthermore, the probability that the two SD cards 22a and 22b reach the end of their life spans at the same time is low. For this reason, even if one of the SD cards 22a and 22b reaches the end of its lifespan, images will be recorded normally on the other, resulting in a situation where no images remain on either of the SD cards 22a and 22b. Very rarely.

[Modification of the fourth embodiment]
In the fourth embodiment, the frame rates of videos recorded on the SD cards 22a and 22b are made different, but recording conditions other than the frame rate, such as resolution, may be made different. Furthermore, both the frame rate and resolution may be different. It is preferable that the resolution of the video recorded on the SD card 22b for long-time recording is lower than the resolution of the video recorded on the SD card 22a for detailed analysis. By setting the resolution in this way, the recordable time of the SD card 22b can be made longer. If the resolution of the video recorded on the SD cards 22a and 22b is to be different, the controller 20 preferably displays text information indicating the resolution on the display 11.

[Fifth example]
Next, a system according to a fifth embodiment will be described with reference to FIG. Hereinafter, descriptions of configurations common to those of the plurality of embodiments described above will be omitted.

The controller 20 (FIG. 2) of the system 1 according to the fifth embodiment stores the video imaged by the camera 17 on both the SD cards 22a and 22b held in the SD card readers 14a and 14b, respectively, under the same recording conditions. It has the ability to record in real time. When the same video is recorded on both the SD cards 22a and 22b, the controller 20 writes identification information (pairing information) linking the two to the SD cards 22a and 22b. The two SD cards 22a and 22b record the same video and serve as mutual backups.

The controller 20 notifies the user that the same video is recorded on the two SD cards 22a and 22b, and that they serve as mutual backups. For example, the controller 20 displays, on the display 11, information in the form of an image or text indicating that the same video is recorded on the two SD cards 22a and 22b and that they play a role of backing up each other.

FIG. 10 is a flowchart of the processing executed by the controller 20. When the system 1 is started by turning on the power of the vehicle, the controller 20 determines whether the SD cards 22a and 22b are installed in both the SD card readers 14a and 14b (step SB01). .

When an SD card is installed in only one of the SD card readers 14a and 14b, the controller 20 determines whether to record video on only one SD card or on two SD cards. The user is allowed to make a selection (step SB02). For example, the controller 20 displays a message on the display 11 prompting the user to select whether to record video on only one SD card or record video on two SD cards. By operating the operation button 12 (FIG. 1A, FIG. 2), the user can select whether to record video on only one SD card or on two SD cards. . In addition, after removing the SD card installed in one of the SD card readers 14a and 14b, it may be installed in a different one of the SD card readers 14a and 14b.

If the user chooses to record video on two SD cards, the controller 20 displays a message on the display 11 prompting the user to insert the other SD card into an empty SD card reader. Then, it waits until the SD card is inserted (step SB03).

When the controller 20 detects that an SD card is inserted into a vacant SD card reader, it determines whether there is any mismatch between the SD cards 22a and 22b that are inserted into the two SD card readers 14a and 14b (step SB04). For example, the controller 20 reads the identification information written in the two SD cards 22a and 22b, and determines whether or not they have a mutual pairing relationship. If the two have a pairwise relationship, it is determined whether the videos recorded on the two SD cards 22a and 22b are the same. For example, by comparing the capacity and recording date and time of the videos recorded on the two SD cards 22a and 22b, it can be determined whether the videos are the same.

If the two SD cards 22a and 22b have a paired relationship and their images are the same, the controller 20 determines that there is no mismatch between the two SD cards 22a and 22b. In other cases, it is determined that there is a mismatch.

If it is determined that there is a mismatch between the two SD cards 22a and 22b, the controller 20 allows the user to select which video of the SD cards 22a and 22b should be kept (step SB05). For example, the controller 20 displays on the display 11 a message that prompts the user to select which of the SD card readers 14a and 14b to leave the image of the SD card inserted therein. By operating the operation button 12 or the like, the user can select the SD card reader 14a or 14b into which the SD card that retains the image is attached.

When the user selects the SD card reader 14a, the controller 20 erases the video on the SD card 22b installed in the unselected SD card reader 14b, and copies the video on the SD card 22a to the SD card 22b (step SB06). SD card 22
If the identification information of a and the SD card 22b are different, the identification information of the SD card 22b is matched with the identification information of the SD card 22a.

When the user selects the SD card reader 14b, the controller 20 erases the video on the SD card 22a installed in the unselected SD card reader 14a, and copies the video on the SD card 22b to the SD card 22a (step SB07). If the identification information of the SD card 22a and the SD card 22b are different, the identification information of the SD card 22a is matched with the identification information of the SD card 22b.

When the process of step SB06 or step SB07 is completed, a process of recording the video imaged by the camera 17 onto the two SD cards 22a and 22b is started (step SB08).

If it is determined in step SB04 that there is no mismatch between the two SD cards 22a and 22b, the controller 20 starts the process of recording on the two SD cards 22a and 22b (step SB08).

If it is determined in step SB01 that two SD cards are installed, the controller 20 executes the process in step SB04 without executing the processes in step SB02 and step SB03.

If the user selects to record video only on one SD card in step SB02, whether or not to erase the video recorded on the SD card installed in one of the SD card readers 14a and 14b. The user is asked to select one (step SB10). For example, the controller 20 displays a message on the display 11 inquiring whether to erase the video. The user can select whether or not to erase the video by operating the operation button 12 or the like.

If the user selects to delete the video, the controller 20 deletes the video in the attached SD card (step SB11). After erasing the video, the controller 20 starts the process of recording the video captured by the camera 17 onto one SD card (step SB12). If the user chooses not to delete the video, the controller 20 starts recording the video captured by the camera 17 onto one SD card without deleting the video (step SB12).

[Effects of the fifth embodiment]
Next, the excellent effects of the fifth embodiment will be explained. When video is recorded in real time on the two SD cards 22a and 22b in step SB08, even if a write error occurs on one of the SD cards 22a and 22b, the video can be normally recorded on the other SD card. . Therefore, it is possible to avoid a situation where no video remains at all. By removing the SD card from only one of the SD card readers 14a and 14b, the video can be played back on another device such as a personal computer.

Further, even if a video in a certain sector of one of the SD cards 22a and 22b is unreadable, the video can be reproduced by reading the contents of the sector in which the same video is recorded on the other SD card.

The user can see that the two SD cards 22a and 22b are paired by looking at the display 11 on which information representing the role of the SD card is displayed.

Further, the user can see the information displayed on the display 11 in step SB02 and notice that there is another SD card that is paired with the one currently installed SD card. This can prevent forgetting to insert the SD card. Furthermore, if the other SD card to be paired with is not found at hand, the user can have System 1 record the video by selecting to record on only one SD card in step SB02. .

Since the controller 20 determines the compatibility of the two SD cards 22a and 22b in step SB04, it is possible to maintain the compatibility of the two SD cards 22a and 22b as a pair.

[Sixth example]
Next, a system 1 according to a sixth embodiment will be described with reference to FIGS. 11, 12A, and 12B. Hereinafter, descriptions of configurations common to those of the plurality of embodiments described above will be omitted. The system 1 according to the sixth embodiment records video on one of the two SD cards 22a and 22b, and if a verification error occurs when recording the video on one SD card, the system 1 records the video on one of the two SD cards 22a and 22b. It has the ability to switch cards and record video on the other SD card.

FIG. 11 is a flowchart of processing executed by the controller 20 (FIG. 2) of the system 1 according to the sixth embodiment. When the power of the vehicle is turned on and the system 1 is started, the controller 20 puts one of the SD cards 22a and 22b installed in the SD card readers 14a and 14b (FIG. 2) into an operating state, and puts the other into an operating state. It is put into a standby state (step SC1). The controller 20 displays on the display 11 an image that informs the user of the SD card reader in which the SD card that is in the operating state is installed (step SC2). After that, the controller 20 writes the video imaged by the camera 17 (FIG. 2) to the SD card in the operating state (step SC3).

After writing the video, the controller 20 determines whether or not the system operation has ended (step SC4). For example, when the power of the vehicle is turned off, it is determined that the operation of the system 1 has ended. If the operation of the system 1 has not ended, the controller 20 determines whether a verify error has occurred during writing to the SD card (step SC5). For example, if an acknowledgment (ACK) signal is returned when writing video to the SD card, it is determined that a verification error has not occurred, and if a negative acknowledgment (NAK) signal is returned, it is determined that a verification error has occurred. good. It is preferable to determine whether a verify error has occurred, for example, for each DMA transfer. If no verify error has occurred, a new video is written to the SC card in the operating state (step SC3).

If a verify error occurs, the controller 20 puts the SD card in the active state into the standby state, and puts the SD card in the standby state into the active state (step SC6). After switching the state of the SD card, the controller 20 displays an image on the display 11 that informs the user of the SD card reader in which the SD card that is in the operating state is installed (step SC7), and a verification error occurs. The video that could not be written normally is written to the newly activated SD card (step SC8). After that, a new video is written to the SD card in the operating state (step SC3).

FIG. 12A shows an example of an image displayed on the display 11 by the controller 20 when the SD card 22a attached to one SD card reader 14a is in an operating state. FIG. 12B shows an example of an image displayed on the display 11 by the controller 20 when the SD card 22b attached to the other SD card reader 14b is in an operating state. The controller 20 (FIG. 2) displays, in the mode display area 31, an icon 38 indicating the SD card reader into which the SD card set to the operating state is installed. The icon 38 is a graphic that indicates an SD card that is set in an operating state and that can notify the user that two SD cards are paired and are recording one video. In FIG. 12A, the figure showing the SD card 22a in the operating state is shown in white and with a thick outline, and the figure showing the SD card 22b in the standby state is shown in gray. Furthermore, two figures representing the SD cards 22a and 22b are surrounded by a polygonal line. By making the two figures representing the SD cards 22a and 22b surrounded by polygonal lines, the user can recognize that the two SD cards 22a and 22b are paired.

[Effects of the sixth embodiment]
Next, the excellent effects of the sixth embodiment will be explained. Video that could not be written due to a verification error occurring when writing to one SD card can be written to the other SD card. In this way, the SD cards 22a and 22b held in the two SD card readers 14a and 14b, respectively, complement each other even if a verification error occurs in one of the SD cards when recording video. Responsible for recording images.

If the cause of the verification error is temporary, there is a possibility that images can be normally recorded on the SD card where the verification error once occurred. Therefore, after a verify error occurs and the operating state of the SD card is changed, if a verify error also occurs in the newly activated SD card, the original SD card is returned to the operational state. As a result, it is possible to reduce the frequency of occurrence of situations in which video cannot be recorded as a whole.

[Modification of the sixth embodiment]
For example, the controller 20 may display on the display 11 that one video is recorded in SD cards 22a and 22b held in two SD card readers 14a and 14b, respectively, in a complementary manner. It is a good idea to notify the user by The user realizes that two SD cards 22a and 22b are required to play back temporally continuous video. When playing video on an external device, the user can recognize that it is necessary to remove the two SD cards 22a and 22b from the SD card readers 14a and 14b and insert them into the external device.

When determining whether or not a verify error has occurred (step SC5), the video recorded on the SD card may be read to check the consistency of the data. You can also read the written video and perform a CRC check.

[Seventh example]
Next, a system 1 according to a seventh embodiment will be described with reference to FIG. 13. Hereinafter, descriptions of configurations common to those of the plurality of embodiments described above will be omitted.

The controller 20 has a function of recording video in a general-purpose file format on an SD card held in one SD card reader, and recording video in a unique format on an SD card held in the other SD card reader. have For example, the avi file format can be adopted as a general-purpose file format. Video compression technologies include MPEG2, Motion JPEG, H. 264, H. 265 etc. may be applied. As the unique file format, for example, a format called the YP format can be adopted.

The SD card held in one SD card reader plays the role of recording video in a general-purpose file format, and the SD card held in the other SD card reader records video in a unique file format. play a role.

The controller 20 displays an image informing the user of an SD card reader holding an SD card that records video in a general-purpose file format, and an SD card reader holding an SD card that records video in a unique file format, for example. 11.

FIG. 13 shows an example of an image displayed on the display 11 by the controller 20. The controller 20 displays an icon 39 in the mode display area 31 of the display 11, indicating the format of the SD cards 22a and 22b held in the SD card readers 14a and 14b, respectively. For example, the characters "avi" are displayed on the right side of the icon representing the SD card 22a, and the characters "YP" are displayed on the right side of the icon representing the SD card 22b. Further, the icon 39 has a graphic shape that can inform the user that the videos recorded on the two SD cards 22a and 22b are the same. For example, a straight line extending from an icon representing the camera 17 branches into two, and each of the branched straight lines extends toward two icons representing two SD cards 22a and 22b, each with an arrow at the end. has been done.

[Effects of the seventh embodiment]
Next, the excellent effects of the seventh embodiment will be explained. The SD card 22a on which video is recorded in a general-purpose file format can be removed from the SD card reader 14a and played back using a general playback device, such as a general-purpose media player of a personal computer. The SD card 22b on which video is recorded in a unique format can be removed from the SD card reader 14b and played back using dedicated application software.

The user can recognize that the video captured by the camera 17 will be recorded on both the SD cards 22a and 22b by looking at the two arrows pointing to the two icons 39 indicating the SD cards 22a and 22b. can. Further, the user can know the formats of the two SD cards 22a and 22b by looking at the characters displayed on the right side of the icon 39 indicating the SD cards 22a and 22b.

Since the contents of the SD card 22b on which video is recorded in a unique format cannot be played back or rewritten on a general personal computer or the like, the confidentiality and safety of the video can be improved.

[Eighth example]
Next, a system according to the eighth embodiment will be described with reference to FIG. 14. Hereinafter, descriptions of configurations common to those of the plurality of embodiments described above will be omitted. In the plurality of embodiments described above, an SD card is used as the removable storage medium, but in the eighth embodiment, two types of storage media with different standard values of maximum writing speed are used. For example, an XQD card can be used as the storage medium with a high maximum writing speed, and an SD card can be used as the storage medium with a slow maximum writing speed.

A medium storage section is provided for each of the two types of storage media. For example, one of the two medium storage units can be an XQD card reader and the other can be an SD card reader. The maximum write speed of the interface standard supported by the XQD card reader is faster than the maximum write speed of the interface standard supported by the SD card reader.

A controller 20 writes the video imaged by the camera 17 in real time to an XQD card held in an XQD card reader that supports the interface standard with a faster maximum writing speed. The controller 20 has a function of copying the video written on the XQD card in real time to the SD card held in the SD card reader according to a command from the user.

Further, the controller 20 displays on the display 11 an image indicating that one medium storage section is an XQD card reader and the other medium storage section is an SD card reader.

FIG. 14 shows an example of an image displayed on the display 11 by the controller 20. The controller 20 displays an icon 40 indicating the interface standard of the medium storage unit in the mode display area 31 . This icon 40 also has the function of informing the user of the roles played by the XQD card and SD card held in the XQD card reader and SD card reader. For example, the icon 40 indicates that the video imaged by the camera 17 is recorded on the XQD card in real time, and the video recorded on the XQD card is copied to the SD card.

[Effects of the eighth embodiment]
Next, the excellent effects of the eighth embodiment will be explained. Compared to recording video in real time on an SD card, which has a slow maximum write speed, it becomes possible to record video with a high frame rate and high resolution on an XQD card in real time. When copying video recorded on an XQD card to another SD card, the copy destination SD card is not required to have a high writing speed. Generally, SD cards with slower write speeds are less expensive than XQD cards. This allows the same video to be copied onto multiple low-cost SD cards and used for distribution.

[Modification of the eighth embodiment]
A removable medium other than an XQD card may be used as a storage medium with a faster maximum writing speed, and a removable medium other than an SD card may be used as a storage medium with a slower maximum writing speed.

It is preferable that the controller 20 has a function of making a copy reservation by specifying the copy start time for copying the video recorded on the XQD card. The user can specify a time period when the vehicle is not used and copy the video.

It is preferable that the XQD card records images captured by the camera 17 during the period from when the power of the vehicle is turned on until it is turned off (hereinafter referred to as constant recording). Furthermore, images before and after the time when the occurrence of a predetermined event is detected may be recorded (hereinafter referred to as event recording). It is especially good to perform both constant recording and event recording.

The controller 20 preferably has a function of allowing the user to select a video to be copied from the video events recorded in the XQD card.

FIG. 15 shows an example of an image displayed on the display 11 when the user is prompted to select a copy source video. The controller 20 displays the event occurrence date and time of the video recorded on the XQD card and the thumbnail image of the video at the time the event occurred in the video display area 30, and also displays a message prompting the user to select the copy source video. Display. By operating the operation button 12, the user can select the video to be copied. Controller 20 copies the selected video from the XQD card to the SD card.

Copying all the constantly recorded videos requires a long copying time. By allowing the user to select and copy only the desired video, unnecessary copying time can be reduced.

[Ninth embodiment]
Next, the system 1 according to the ninth embodiment will be described with reference to FIGS. 16A and 16B. Hereinafter, descriptions of configurations common to those of the plurality of embodiments described above will be omitted.

FIG. 16A is a functional block diagram of a part of the system 1 according to the ninth embodiment. At least one of the SD card readers 14a and 14b of the system 1 according to the ninth embodiment, for example the SD card reader 14b, supports an interface standard with the SDIO card 22c having a wireless communication function. As the SDIO card 22c, for example, a card having a communication function of the WiFi standard, a card having a communication function of the mobile communication system standard, a card having a communication function of the transfer jet standard, etc. can be used.

The controller 20 has a function of causing the SDIO card 22c to transmit the video imaged by the camera 17 (FIG. 2) to an external device, and a function of reading the video from the SD card 22a and transmitting the read video.

FIG. 16B shows an example of an image that the controller 20 displays on the display 11 when the SDIO card 22c with a wireless communication function is attached to the SD card reader 14b. The controller 20 displays icons 41a and 41b representing the SD card 22a and SDIO card 22c installed in the SD card readers 14a and 14b in the mode display area 31. The icon representing the SDIO card 22c having a wireless communication function includes an antenna figure to notify that the SDIO card 22c has a wireless communication function.

[Effects of the ninth embodiment]
Next, the excellent effects of the ninth embodiment will be explained. The system 1 according to the ninth embodiment can wirelessly transmit an image captured by the camera 17 to an external device via the SDIO card 22c having a wireless communication function. Thereby, the user can play back the video recorded on the SD card 22a with an external device without removing the SD card 22a from the SD card reader 14a.

By looking at the image displayed on the display 11, the user learns that the SDIO card 22c installed in one SD card reader 14b has a wireless communication function and plays the role of wirelessly transmitting images. be able to. It can be seen that the SD card 22a attached to the other SD card reader 14a has the role of recording video.

[Modification of the ninth embodiment]
It is preferable that the SDIO card 22c has a video recording function in addition to the wireless communication function. The video recorded on the SDIO card 22c can be transmitted to an external device by using the wireless communication function of the SDIO card 22c according to a command from the controller 20. For example, it is preferable that the controller 20 reads the video from the SDIO card 22c and transmits the read video from the SDIO card 22c. Furthermore, it is particularly preferable that the controller 20 gives a transmission command to the SDIO card 22c so that the SDIO card 22c autonomously transmits the video.

It is further preferable that both of the two SD card readers 14a and 14b support an interface standard with an SDIO card having a wireless communication function. For example, while video is being recorded on an SDIO card held in one SDIO card reader, the video already recorded on the SDIO card held in the other SDIO card reader will be recorded on that SDIO card. It can be sent using the communication function.

As the SDIO card, one compatible with the close proximity wireless transfer technology standard, such as TransferJet, may be used. When an SDIO card compatible with the proximity wireless transfer technology standard is held in the SD card reader, the user can transfer the video to the base unit by removing System 1 (Figures 1A and 1B) from the vehicle and bringing it close to the base unit. be able to. An SD card reader that supports the interface standard with an SDIO card that supports the close proximity wireless transfer technology standard is preferably placed closer to the wall of the chassis than the other SD card reader so as not to interfere with the close proximity wireless transfer. .

[10th example]
Next, a system 1 according to a tenth embodiment will be described with reference to FIG. 17. Hereinafter, descriptions of configurations common to those of the plurality of embodiments described above will be omitted.

The controller 20 has a function of recording images captured by the camera 17 from the time when the power of the vehicle is turned on until the time when the power is turned off (hereinafter referred to as "continuous recording"). A function that records images for a predetermined period including the time when a predetermined event occurs (hereinafter referred to as event recording), and a function that records images captured by the camera 17 during a period when the vehicle's power is turned off (hereinafter referred to as event recording). It has a function to record parking monitoring (hereinafter referred to as "parking monitoring record"), and a function to record log data (hereinafter referred to as "log data record") in which information related to vehicle travel is arranged in chronological order.

As the predetermined event, for example, the acceleration sensor 18 may detect an impact of a magnitude equal to or greater than a threshold value. The log data may include, for example, GPS information (vehicle position information), speed information, acceleration information, information indicating the operation status of the vehicle, a locus of movement of the vehicle, and the like. The operating status of the vehicle may include, for example, operating status such as whether or not the brake is depressed and whether the turn signal is activated or not. This information can be acquired from various sensors mounted on the vehicle, an OBD connector, and the like.

The recording destination for constant recording, event recording, parking monitoring recording, and log data recording is set to either the SD card 22a held in the SD card reader 14a or the SD card 22b held in the SD card reader 14b. ing. The controller 20 has a function of informing the user of which SD card reader holds these recording destinations.

FIG. 17 shows an example of an image displayed on the display 11 by the controller 20 to notify the user of the recording destination. The user can display the image shown in FIG. 17 by operating the operation button 12.

The controller 20 graphically displays the outline of the system 1 and the SD card slots 10a and 10b in the video display area 30, as well as the positions of the SD card slots 10a and 10b, and the location of the SD card slots 10a and 10b. A chart showing the correspondence with the contents recorded on the SD cards 22a and 22b is displayed. From the image shown in FIG. 17, the user can see that constant recording is performed on the SD card 22a inserted into the lower SD card insertion slot 10a, and that event recording, parking monitoring recording, and log data recording are performed on the upper SD card insertion slot 10a. It can be recognized that the process is performed on the SD card 22b inserted into the SD card insertion slot 10b.

[Effects of the tenth embodiment]
Next, the excellent effects of the tenth embodiment will be explained. In the tenth embodiment, the overall recording capacity is increased compared to the case where all of the constant records, event records, parking monitoring records, and log data records are recorded on one SD card. As a result, the time that can be constantly recorded or the time that parking monitoring can be recorded becomes longer, the number of events that can be recorded increases, and the amount of log data that can be recorded increases. In the case of constant recording or parking monitoring recording, if the process of overwriting old video with new video when the free space on the SD card runs out is performed, the number of times of overwriting can be reduced. This can extend the life of the SD card.

The user only has to prepare an SD card with an appropriate recording capacity according to the capacity of the video to be recorded.

The user can remove only the SD card on which the desired video is recorded from the SD card reader and play it back on an external device. For example, if you want to see a video when an event occurs, you only need to remove the event recording SD card 22b from the SD card reader 14b. By looking at the image displayed on the display 11 (FIG. 17), the user can easily know which SD card should be removed.

When using this system 1 for business purposes, for example, the operation manager may have the driver submit only the SD card 22b in which the event is recorded. For the operation manager, this has the effect of reducing the amount of video that must be checked compared to the case where all recorded video is checked at all times. In addition, the number of SD cards to be submitted to the operation manager can be reduced by having the operation manager record only necessary information on one SD card and recording less necessary information on the other SD card. Can be done. This makes operation management easier.

[Modification of the tenth embodiment]
In the tenth embodiment, the controller 20 had the functions of performing constant recording, event recording, parking monitoring recording, and log data recording, but the controller 20 had the function of performing two functions of constant recording and event recording, or parking monitoring recording. It may also have the function of performing two functions: and event recording. At this time, it is preferable to use different SD cards for continuous recording or parking monitoring recording and for event recording. It is preferable to overwrite an SD card that performs constant recording or parking monitoring recording, but not to overwrite an SD card that performs event recording.

For example, an SD card for event recording does not require as much capacity as an SD card for constant recording or parking monitoring recording. For this reason, prepare an SD card with a relatively large capacity for continuous recording or parking surveillance recording, and prepare an SD card with a relatively large capacity for event recording. Just prepare something small. Thereby, the cost required for the SD card can be reduced.

Parking surveillance records are best recorded by recording images taken during the entire period when the vehicle is parked with the power turned off, and especially if some images including the time when a predetermined event occurs while the vehicle is parked are recorded. good. Events include, for example, detection of movement in the captured video (motion detection), detection of vehicle vibration, detection of loud noise, detection of opening of a vehicle window, detection of opening of a vehicle door, etc. good. By recording a portion of the video including the time point at which an event occurs on the storage medium for parking surveillance recording, it is possible to reduce the consumption of the capacity of the SD card for parking surveillance recording.

It is also possible to constantly record data on one SD card and record log data on the other SD card. The operation manager can evaluate the driving at the time of image acquisition by associating the image stored in one of the SD cards with the log data. By looking at the image displayed on the display 11 (FIG. 17), the driver can determine, for example, the location of the SD card slot for inserting the SD card for recording video and the location for inserting the SD card for recording log data. You can know the location of the card insertion slot.

In the tenth embodiment, the correspondence relationship between the constant record, event record, parking monitoring record, and log data record and the SD card is fixed, but it is preferable to allow the user to change this correspondence relationship. For example, the correspondence may be changed by the user operating the operation button 12 while looking at the image on the display 11 shown in FIG.

The system 1 may include three SD card readers for mounting an SD card for constant recording, an SD card for event recording, and an SD card for parking monitoring recording. By dividing the SD cards for each purpose, it is possible to submit a plurality of SD cards to each administrator who needs them.

[Eleventh Example]
Next, with reference to FIG. 18A, system 1 according to the eleventh example will be described. Hereinafter, descriptions of configurations common to those of the plurality of embodiments described above will be omitted.

The controller 20 of the system according to the eleventh embodiment records images before and after the occurrence of a specific event (referred to as a first type event) on one SD card, and records a specific event different from the first type event on one SD card. The SD card has a function of recording images before and after the event (referred to as the second type event) occurs on the other SD card. Information defining the first type event and the second type event may be stored in the controller 20 in advance, for example.

The controller 20 displays on the display 11 the correspondence between a specific event and the SD card that records the video when the event occurs.

FIG. 18A shows an image on the display 11 displaying the correspondence between the event and the recording destination SD card. The user can display the image shown in FIG. 18A by operating the operation button 12.

The controller 20 graphically displays the outline of the system 1 and the SD card slots 10a and 10b in the video display area 30, as well as the positions of the SD card slots 10a and 10b, and the location of the SD card slots 10a and 10b. A chart showing the correspondence with events that trigger recording to the SD cards 22a and 22b is displayed.

Sudden steering, sudden braking, sudden acceleration, etc. are mainly based on the driver's own driving ability and driving attitude. The occurrence of collisions is thought to be caused by the driving of other vehicles, regardless of the driver's driving ability or driving attitude. In this way, as in the example shown in FIG. 18A, the SD card 22a records images when an event that is thought to be caused by something other than the driver occurs, and the SD card 22a records images when an event that is thought to be caused mainly by the driver occurs. It is preferable to use a different SD card 22b to record the video when this occurs.

[Effects of the eleventh embodiment]
Next, the excellent effects of the eleventh embodiment will be explained. From the image shown in FIG. 18A, the user can see that the image at the time of the collision is recorded on the SD card 22a inserted into the lower SD card insertion slot 10a, and the image at the time of sudden steering, sudden braking, and sudden acceleration. can be seen to be recorded on the SD card 22b inserted into the upper SD card insertion slot 10b.

Videos of events that are thought to be caused by the driver's driving technique or driving attitude (for example, sudden steering, sudden braking, sudden acceleration, etc.) can be used for driver education. When the operation manager requests the driver to take out the SD card 22b from the system 1 and submit it, in which images of sudden steering, braking, and sudden acceleration have been recorded, the driver receives the information displayed on the display 11. It is possible to easily determine from which SD card insertion slot the SD card should be removed from the image.

[Modification of the eleventh embodiment]
FIG. 18B shows an example of an image displayed on the display 11 by the controller 20 of the system according to the modification of the eleventh embodiment. In this modification, the controller 20 records images before and after the event on one SD card 22a if an event occurs while observing the legal speed, and if the event occurs while exceeding the legal speed. , the images before and after that are recorded on the other SD card 22b. The controller 20 displays on the display 11 the correspondence between the event that has occurred and the SD card on which the video should be recorded. The legal speed for the route currently being traveled can be obtained from road signs, map data, etc.

The user can easily compare an image of the vehicle exceeding the legal speed limit and an image of the vehicle complying with the legal speed limit.

[Twelfth embodiment]
Next, a system 1 according to a twelfth embodiment will be described with reference to FIGS. 19A and 19B. Hereinafter, descriptions of configurations common to those of the plurality of embodiments described above will be omitted.

In the twelfth embodiment, an event condition, which is a condition for determining that a predetermined event has occurred, is stored in an SD card held in one of the SD card readers. The controller 20 reads the event conditions from the SD card, records the video imaged by the camera 17 on the SD card held in the other SD card reader, and detects the occurrence of an event that satisfies the read event conditions. Then, it has the ability to record a landmark indicating that an event has occurred in association with the video.

The controller 20 displays an image on the display 11 to inform the user of the SD card reader into which the SD card storing the event conditions is installed and the SD card reader into which the SD card for recording video is installed.

FIG. 19A shows an example of an image displayed on the display 11. An icon 42a indicating the SD card 22a on which the video imaged by the camera 17 is recorded, and an icon 42b indicating the SD card 22b storing the event conditions are displayed in the mode display area 31. For example, an arrow pointing from an icon indicating the camera 17 to an icon indicating the SD card 22a is displayed, an exclamation mark surrounded by a circle is displayed in the middle of the arrow, and the SD card 22b is indicated near the exclamation mark. An icon 42b indicating the icon 42b is displayed. The arrow pointing from the icon representing the camera 17 to the icon representing the SD card 22a indicates that the video imaged by the camera 17 is recorded on the SD card 22a. The exclamation point shown above the arrow and the icon 42b indicating the SD card 22b indicate that the event condition is stored in the SD card 22b.

FIG. 19B shows a frame sequence of video recorded on the SD card 22a. Among the plurality of frames, a mark 43 indicating that an event has occurred is recorded corresponding to a frame that was imaged when the event occurred. Marker 43 includes information that identifies which event has occurred.

[Effects of the 12th embodiment]
Next, the excellent effects of the twelfth embodiment will be explained. The user can quickly find the video he or she wants to check or verify by referring to the mark 43 recorded on the SD card 22a that records the video. This makes it possible to extract useful images from a huge amount of images and make effective use of the images. Since the user only has to store the event conditions that he/she wishes to confirm or verify in the SD card 22b, the user can easily add or delete event conditions.

By looking at the image displayed on the display 11, the user can infer that the video imaged by the camera 17 is recorded on the SD card 22a, and that the event conditions are stored on the SD card 22b. This allows the user to know which SD card reader 14b should be loaded with the SD card 22b that stores event conditions, and which SD card reader 14a should be loaded with the SD card 22a that records video.

The event conditions may include conditions for detecting the occurrence of an event that may occur due to driver fatigue, carelessness, etc., for example. For example, the event conditions include deviating from the driving lane, approaching the vehicle in front abnormally, remaining stationary for a certain period of time even though the vehicle in front has started moving, and occurrence of lateral vibration, slipping, etc. be able to. The occurrence of these events can be detected by equipping the vehicle with an advanced driver assistance system (ADAS). By showing the driver the video of the event occurring, the operation manager can make the driver aware of the level of danger and encourage safe driving.

The event condition may include, for example, a condition that a specific person or a specific vehicle is present in the captured video. It is preferable that an image of a specific person or a specific vehicle number to be detected be stored in the SD card 22b as a template image, and the controller 20 detect the specific person or vehicle using image authentication technology. When the controller 20 detects a specific person or vehicle, it is preferable that the controller 20 transmits location information of the detected place, video at the time of detection, etc. to a data center (for example, a police server, etc.). The information sent to the data center provides valuable clues to locating the wanted person or vehicle.

The event condition may include, for example, the detection of a vehicle that is moving in a disturbing or dangerous manner (dangerous vehicle). Disturbing or dangerous movements may include, for example, meandering, ignoring traffic lights, and speeding. When the controller 20 detects a dangerous vehicle, it is preferable that the controller 20 transmits the location information of the detected place, the video at the time of detection, etc. to a data center (for example, a police server, etc.). By sharing the presence of a dangerous vehicle among drivers of a plurality of vehicles, it becomes possible to prevent accidents caused by the dangerous vehicle. Drivers of dangerous vehicles can be instructed not to drive dangerously.

The event conditions may include detection of a person in a specific posture, detection of a pedestrian of a specific age, detection of a bicycle, detection of a specific traffic sign, etc. It is possible to easily confirm or verify how the driver was driving when these events occurred. For example, a person in a specific posture may include a person with a raised hand, a person holding a selfie stick, etc. For example, it is possible to verify from the video whether the driver paused when a person raising his or her hand was detected. It is possible to verify whether the driver slows down when a person with a selfie stick is detected. Pedestrians of specific age groups may include children or the elderly. For example, it can be verified whether the driver slows down when a child or an elderly person is detected as a pedestrian. When various traffic signs are detected, it can be verified, for example, whether the driver is complying with traffic rules.

[13th example]
Next, a system according to a thirteenth embodiment will be described with reference to FIGS. 20 to 22. Hereinafter, descriptions of configurations common to those of the plurality of embodiments described above will be omitted.

In the thirteenth embodiment, the SD card 22a held in the SD card reader 14a has
Recording conditions of at least one of frame rate and resolution are stored. The controller 20 has a function of reading recording conditions stored in the SD card 22a and recording video based on the read recording conditions.

The controller 20 displays the recording conditions stored in the SD card 22a on the display 11 to inform the user of the recording conditions under which the video is being recorded.

FIG. 20 shows an example of an image displayed on the display 11. An icon 53a indicating the SD card 22a and an icon 53b indicating the SD card 22b are displayed in the mode display area 31. For example, the characters displayed on the right side of the icon 53a indicate that the recording condition "frame rate 30 fps" is stored in the SD card 22a. The downward triangular symbol displayed on the right side of the icon 53b indicates that video is recorded on the SD card 22b at the same frame rate as the frame rate of the SD card 22a.

The recording conditions stored in the SD card 22a can be set using an external device such as a personal computer.

FIG. 21 shows an example of a setting window when setting recording conditions on an SD card using a personal computer. The recording method selection box allows the user to select one mode from a mode in which only constant recording is performed, a mode in which both constant recording and event recording are performed, and a mode in which only event recording is performed.

The image shown in FIG. 21 shows an example in which a sub camera can be connected in addition to the camera (main camera) 17 built into the system 1, but in the thirteenth embodiment, the sub camera is not connected. Let's discuss an example. The user can select the resolution of the main camera, the number of recorded frames (frame rate), and the number of event recorded frames from a pull-down menu. Further, the user can select event recording time, whether to record audio, history recording time, and number of history recording frames from a pull-down menu. Furthermore, the user can select whether or not to overwrite when there is no space left in the recording areas for constant recording, event recording, and history recording.

Furthermore, the user can select whether to perform event recording based on the measured value of the acceleration sensor (G sensor) 18 or whether to perform event recording based on the measured value of the gyro sensor. Furthermore, it is possible to set the magnitude of the measured value that is determined to be recorded as an event.

A "Save to SD Card" button is displayed in the settings window displayed on the computer screen. When the user selects (for example, clicks or taps) the "Save to SD Card" button with the pointing device, the recording conditions set in the settings window are stored in the SD card.

[Effects of the 13th embodiment]
Next, the excellent effects of the thirteenth embodiment will be explained. By storing recording conditions in advance in the SD card 22a attached to the SD card reader 14a, the user can record video on the SD cards 22a and 22b under desired recording conditions. By looking at the icons 53a and 53b displayed on the display 11, it is possible to confirm the SD card reader 14a to which the SD card 22a in which the recording conditions are stored is to be inserted, and the current recording conditions.

[Modification of the thirteenth embodiment]
In addition to the frame rate and resolution, the recording conditions include, as shown in FIG. 21, conditions for determining the occurrence of an event when recording images before and after the occurrence of an event, and conditions for determining whether to record audio. etc. may also be included. As a condition for determining whether an event has occurred, for example, a detection value of the acceleration sensor 18 mounted on the vehicle may be used as a determination threshold. In addition to the detection value of the acceleration sensor 18, other event types may be employed as recording conditions.

In the thirteenth embodiment, the recording conditions are stored in the SD card 22a attached to the SD card reader 14a, but the recording conditions are stored in the SD card 22b attached to the other SD card reader 14b. You can also keep it.

When the recording conditions are stored in both the SD cards 22a and 22b held in the two SD card readers 14a and 14b, the controller 20 stores the recording conditions in the SD card held in one specific SD card reader. It is recommended to enable the recording conditions stored in the SD card reader, and record video on the two SD cards based on the valid recording conditions, without using the recording conditions stored in the SD card held in the other SD card reader. . The user only has to attach the SD card that stores the recording conditions that he or she wants to actually record into a specific SD card reader, and there is no need to know the recording conditions stored in the other SD card.

The controller 20 enables the recording conditions stored in the SD cards 22a and 22b held in the two SD card readers 14a and 14b, and applies the recording conditions stored in the SD card for each SD card. The video may be recorded based on this. The user can determine recording conditions for each SD card.

The controller 20 may record the video onto the SD card based on the recording conditions set in the controller 20 in advance, without using the recording conditions stored in the SD card. By setting the recording conditions in the controller 20 in advance, the user can set the recording conditions based on the desired recording conditions without checking the recording conditions stored in the SD card each time the SD card is inserted into the SD card reader. Video can be recorded.

The controller 20 operates in a mode that enables recording conditions stored in an SD card held in one specific SD card reader, a mode that enables both recording conditions stored in an SD card, and a mode that enables recording conditions stored in an SD card held in one specific SD card reader. It is preferable that the controller 20 has a function of allowing the user to select one mode from among the modes for validating the recording conditions set in the controller 20. The user can select the most appropriate mode depending on how the system is used.

The controller 20 may display a menu of multiple modes for the user to select on the display 11.

FIG. 22 shows an example of a menu screen displayed on the display 11. A button 44a for specifying a mode for validating the recording conditions stored in the SD card 22a held in the SD card reader 14a, a mode for validating the recording conditions stored in the SD card 22b held in the SD card reader 14b. button 44b for specifying a mode for validating the recording conditions stored in both SD cards, and button 44d for specifying a mode for validating the specified recording conditions set in the controller 20. Displayed.

The user only has to select one mode from the menu. If an SD card with no recording conditions stored in it is held in an SD card reader, exclude from the menu the mode that enables the recording conditions stored in the SD card held in the SD card reader. It's a good idea to leave it there. When no recording conditions are set in the controller 20, it is preferable to exclude from the menu a mode that enables the default recording conditions set in the controller 20. The user can see a list of selectable modes by looking at the menu screen displayed on the display 11.

The recording conditions and priorities may be stored in each SD card, and the controller 20 may enable the recording condition with the higher priority. If the priorities are the same, it is preferable to determine which recording condition is to be enabled based on when the priorities were set. For example, it is preferable to enable the recording condition that has been set more recently. Conversely, the recording condition with the older setting time may be enabled. It is preferable to set in advance in the controller 20 whether to enable the recording condition with the latest setting time or the recording condition with the oldest setting time.

An SD card reader and an SD card insertion slot into which an SD card storing recording conditions to be enabled may be inserted may be fixed. For example, the user may insert the SD card storing the recording conditions that he/she wishes to enable into the SD card insertion slot at a predetermined position.

Although FIG. 21 describes an example in which recording conditions are set on a personal computer, the controller 20 of the system 1 may have a function of storing recording conditions in an SD card.

[Fourteenth embodiment]
Next, the system 1 according to the fourteenth embodiment will be described with reference to FIGS. 23A, 23B, 24A, and 24B. Hereinafter, descriptions of configurations common to those of the plurality of embodiments described above will be omitted.

FIG. 23A is a block diagram showing some functions of the system 1 according to the fourteenth embodiment. In the fourteenth embodiment, images are transferred to the controller 20 from two cameras 17a and 17b. For example, two cameras 17a and 17b may be installed to take images of the front and rear of the vehicle, or the front and interior of the vehicle, respectively.

The controller 20 has a function of recording images captured by two cameras 17a and 17b onto SD cards 22a and 22b held in different SD card readers 14a and 14b, respectively. The controller 20 displays, on the display 11, the correspondence between the two cameras 17a and 17b and the two SD card readers 14a and 14b as image or text information.

FIG. 23B shows an image on the display 11 showing the correspondence between the two cameras 17a and 17b and the two SD card readers 14a and 14b. In the mode display area 31, an icon 45a indicating that the camera 17a is compatible with the SD card reader 14a, and an icon 45b indicating that the camera 17b is compatible with the SD card reader 14b are displayed.

[Effects of the 14th embodiment]
Next, the excellent effects of the fourteenth embodiment will be explained. The system 1 according to the fourteenth embodiment can record images of a wide area that cannot be covered by one camera. For example, images of the front and rear of the vehicle, or images of the front and interior of the vehicle can be recorded. By looking at the image displayed on the display 11 (FIG. 23B), the user can easily know which SD card held by which SD card reader has an image captured by which camera recorded therein. The user can remove the SD card containing the video that he/she wants to play back from the SD card reader and play the video.

[Modification of the 14th embodiment]
The controller 20 informs the user through the display 11 that the images recorded on the SD cards 22a and 22b held in the two SD card readers 14a and 14b, respectively, are images of different areas captured during the same period. It is a good idea to let them know. The user notices through the display 11 that two images taken during the same period are recorded on two SD cards 22a and 22b, respectively. When checking the videos on the two SD cards 22a and 22b, it is preferable that the playback device synchronizes the two videos and displays the videos at the same time on the display screen at the same time. The user can easily check the situation around the vehicle at the same time.

When the user removes only the SD card held in one SD card reader, the controller 20 determines whether video captured during the same period is recorded on the SD card held in the other SD card reader. Therefore, it is preferable to display a message on the display 11 urging the user to remove the SD card as well. This notification makes it difficult to forget to remove the SD cards 22a and 22b from the SD card readers 14a and 14b.

For example, two cameras 17a and 17b may be mounted on the work vehicle, and one may take an image of the front of the vehicle, and the other may take an image of the work location. For example, it is preferable that the work vehicle on which the cameras 17a and 17b are mounted is a forklift, and the work area imaged by one camera 17a is the range of the lifting and lowering motion of the fork. The user can check the running status of the work vehicle and the work status on video after the work is completed.

For example, it is preferable to mount two cameras 17a and 17b on a vehicle operating within the premises, one to image the front of the vehicle and the other to image the driver. By viewing the images captured by the two cameras 17a and 17b, it is possible to verify whether the driver is following the driving rules within the premises. For example, it is possible to verify whether the user points and cheers when turning left or right. If audio is added to the video, it can be verified whether or not a cheer such as "Right, right, left" was cheered at a specific location.

For example, different types of cameras may be used as the two cameras 17a and 17b. For example, it is preferable to use an omnidirectional camera as one camera 17a, and use a normal camera as the other camera 17b. Based on the information notified through the display 11, the user selects an SD card that stores images captured by the omnidirectional camera and an SD card that stores images captured by a normal camera. can be easily distinguished.

As shown in FIG. 24A, one camera 17a may be housed within the housing of the system 1, and the other camera 17b may be an external camera. Since the user only needs to connect one external camera 17b to the housing, the connection work can be simplified.

As shown in FIG. 24B, both of the two cameras 17a and 17b may be external cameras. The user can select an external camera with suitable performance depending on the object to be imaged and the purpose of the imaged image. Furthermore, since the positions of cameras 17a and 17b are not affected by the position of the system casing, the degree of freedom in positioning cameras 17a and 17b is increased. The shapes of the connection terminals 46a and 46b on the housing side of the system 1 for connecting the external cameras 17a and 17b may be different. It is possible to prevent connection errors between the two external cameras 17a and 17b of different types.

Three or more SD card readers may be provided, and cameras for the number of SD card readers may be prepared. By preparing three or more SD card readers and cameras, a wider range of images can be captured simultaneously and recorded on the corresponding SD cards.

[15th example]
Next, a system according to a fifteenth embodiment will be described with reference to FIG. 25. Hereinafter, descriptions of configurations common to those of the plurality of embodiments described above will be omitted.

The controller 20 records the current video imaged by the camera 17 on the SD card 22a held in one SD card reader 14a. In the fifteenth embodiment, the other SD card reader 14b holds an SD card 22b in which a video imaged in the past by a camera 17 mounted on a vehicle is recorded together with the imaged position information. Based on the current location of the vehicle, the controller 20 has a function of reading out an image corresponding to the current location information from the SD card 22b and displaying it on the display 11 while comparing the video with the current location information of the vehicle.

In this way, for example, the SD card 22a held in one SD card reader 14a plays the role of recording video in real time, and the SD card 22b held in the other SD card reader 14b plays the role of recording video in real time. It is responsible for the function of providing images. The controller 20 informs the user of the roles of the two SD cards 22a and 22b through the display 11.

FIG. 25 shows an example of an image displayed on the display 11. In the mode display area 31, an icon 47a indicating that the video imaged by the camera 17 is to be recorded on the SD card 22a in real time, and an icon 47b indicating that the video recorded on the SD card 22b is to be displayed on the display 11 are displayed. Displayed. Further, in the video display area 30, a current video 48 captured by the camera 17 and a video 49 read from the SD card 22b are displayed. The displayed past image 49 is associated with position information corresponding to the current vehicle position.

[Effects of the 15th embodiment]
Next, the excellent effects of the fifteenth embodiment will be explained. The driver can drive while referring to the past image 49 displayed on the display 11. It is preferable that the image taken in the past be taken while the vehicle is traveling along the recommended travel route. For a driver who is unfamiliar with the recommended driving route, the image 49 displayed on the display 11 becomes useful information for driving on the recommended driving route.

The driver looks at the icons 47a and 47b displayed in the mode display area 31 and determines in which SD card reader the SD card 22b containing the past video recorded when driving on the recommended driving route should be installed. easy to know. For this reason, it becomes difficult to erroneously insert the SD card into the SD card reader.

[Sixteenth example]
Next, the system 1 according to the 16th embodiment will be described with reference to FIGS. 26 and 27. Hereinafter, descriptions of configurations common to those of the plurality of embodiments described above will be omitted.

In the sixteenth embodiment, an SD card 22b on which an in-store demonstration video for sales promotion is recorded is attached to one of the SD card readers 14b, and operates while being displayed at the storefront of a store.

FIG. 26 is a flowchart of the operation of the system 1. When a user, for example a clerk at a store, performs an operation to start the demonstration mode, the controller 20
The demo video for sales promotion recorded on the D card 22b is displayed on the display 11 (step SD1). At the end of the promotional demo video, a video is added to inform consumers that filming is about to begin. For example, it is preferable to play a video that includes a voice saying, "We are about to start shooting, so please point the camera in the direction you want to shoot."

When the reproduction of the demo video for sales promotion ends, the controller 20 records the video imaged by the camera 17 on the other SD card 22a for a predetermined period of time set in advance in the controller 20 (step SD2). This predetermined time is preferably about 30 seconds, for example. When the predetermined time has elapsed, the controller 20 finishes recording the video and plays back the video recorded on the SD card 22a (step SD3). The reproduced video is displayed on the display 11.

Thereafter, the controller 20 determines whether or not to end the sales promotion operation. For example, when the power supply to the system 1 is stopped, the controller 20 ends its operation. If the controller 20 does not terminate the operation, it repeats the operations starting from the reproduction of the promotional demo video (step SD1) again. In this way, the controller 20 switches and executes the reproduction of the demo video, the recording of the in-store video, and the reproduction of the in-store video in this order.

The controller 20 includes, for example, information specifying an SD card reader 14b that holds an SD card 22b that records videos for sales promotion, and an SD card 22a that records videos captured by a camera 17 displayed at a store. Information identifying the SD card reader 14a holding the SD card is displayed on the display 11.

FIG. 27 shows an example of an image displayed on the display 11. In the mode display area 31, an icon 50 is displayed to inform the user of the roles played by the SD cards 22a and 22b. The icon 50 indicates that the video imaged by the camera 17 is recorded on the SD card 22a, that the video recorded on the SD card 22a is displayed on the display 11, that the demo video is recorded on the SD card 22b, and This indicates that a demonstration video is displayed on the display 11.

[Effects of the 16th embodiment]
Next, the excellent effects of the 16th embodiment will be explained. By displaying demo videos for sales promotion on the display 11, the store can increase consumers' desire to purchase. Furthermore, the functionality of the system can be easily communicated to consumers. The consumer can check the image taken at the store through the display 11. This allows consumers to deeply understand the system's functionality and experience its performance.

The consumer watches the demonstration video, learns that imaging will begin, and can begin to point the camera at the object he or she wishes to image. It is preferable that the controller 20 ends the imaging after a certain period of time and automatically reproduces the video and displays it on the display 11. When the reproduction of the captured video is completed, it is preferable to return to the reproduction of the sales promotion video.

[Seventeenth Example]
Next, a system 1 according to a seventeenth embodiment will be described with reference to FIG. 28. Hereinafter, descriptions of configurations common to those of the plurality of embodiments described above will be omitted.

The system 1 according to the seventeenth embodiment has an internal power source (battery) that supplies power to various components within the system 1 when the supply of power from the outside, for example from the vehicle, stops. The internal power source is charged while power is being supplied to the system 1 from the vehicle.

System 1 has a mode in which it operates as a drive recorder when power is supplied from the vehicle (drive recorder mode), and a mode in which it operates as a parking monitoring recording device when the power supply from the vehicle stops while installed in the vehicle. (parking surveillance mode), and a mode in which it operates as an action camera when taken outside the vehicle (action camera mode).

FIG. 28 shows a mode transition diagram between operating modes. System 1 has five operating modes: drive recorder mode, parking monitoring mode, action camera mode, stop A mode, and stop B mode. In the drive recorder mode, power is supplied from the outside (for example, the vehicle) and the main switch is turned on. In the drive recorder mode, the controller 20 performs constant recording, event recording, etc., for example.

When the external power supply is stopped while the operating mode is the drive recorder mode, the controller 20 changes the operating mode to the parking monitoring mode. In the parking monitoring mode, the controller 20 performs parking monitoring recording. When the main switch is turned off while the operating mode is the drive recorder mode, the controller 20 changes the operating mode to the stop A mode. In stop A mode, the controller 20 does not record video.

When the external power supply is resumed while the operating mode is the parking monitoring mode, the controller 20 changes the operating mode to the drive recorder mode. When the main switch is turned off while the operating mode is the parking monitoring mode, the controller 20 changes the operating mode to the stop B mode. In the stop B mode, the controller 20 does not record video.

When the main switch is turned on when the operation mode is the stop A mode, the controller 20 changes the operation mode to the drive recorder mode. When the external power supply is stopped while the operation mode is in the stop A mode, the controller 20 changes the operation mode to the stop B mode.

When the external power supply is restarted when the operation mode is in the stop B mode, the controller 20 changes the operation mode to the stop A mode. When the main switch is turned on when the operation mode is the stop B mode, the controller 20 changes the operation mode to the action camera mode. The operation when the operation mode is the action camera mode will be explained later.

When the main switch is turned off while the operation mode is the action camera mode, the controller 20 changes the operation mode to the stop B mode. When the external power supply is restarted when the operation mode is the action camera mode, the controller 20 changes the operation mode to the drive recorder mode.

When in drive recorder mode, the controller 20 records video on an SD card 22a held in one SD card reader 14a, and when in action camera mode, records video on an SD card 22b held in the other SD card reader 14b. It has the ability to record images. Further, the controller 20 has a function of recording an image on the SD card 22a held in one of the SD card readers 14a during the parking monitoring mode. The controller 20 displays on the display 11 the roles played by the SD cards 22a and 22b held in the SD card readers 14a and 14b.

FIG. 29 shows an example of an image displayed on the display 11. In the mode display area 31, an icon 51a indicating that an image captured while the system 1 is installed in the vehicle is recorded on one of the SD cards 22a, and an icon 51a indicating that an image captured while the system 1 is installed in the vehicle is recorded. An icon 51b indicating that the recorded video will be recorded on the other SD card 22b is displayed. In FIG. 29, the fact that the system 1 has been taken out of the vehicle is represented by, for example, the shape of skis.

[Effects of the 17th embodiment]
A user can take out the system 1 from the vehicle and image a desired object. An SD card 22a on which images captured when the system 1 is installed in a vehicle is recorded, and an SD card 22b on which images captured while the system 1 is taken out of the vehicle are recorded can be stored separately. With the system 1 mounted on a vehicle, it is possible to record images captured by the camera 17 on one SD card 22a while reading images recorded outside the vehicle from the other SD card 22b.

For example, it is possible to drive a vehicle and go on a vacation, and at the resort, the system 1 can be taken out of the vehicle and used as an action camera. Videos taken at the resort can be played back in the car on the way back from the vacation.

By looking at the icons 51a and 51b displayed on the display 11, the user can easily know which video is recorded in which SD card held by which SD card reader.

When the system 1 is used as a drive recorder, the internal power supply of the system 1 is automatically charged while the vehicle is powered on. Therefore, when using the system 1 as an action camera, it is difficult to forget to charge the internal power supply.

[Modification of the 17th embodiment]
After the system 1 operates as an action camera, when the system 1 is mounted on a vehicle and power supply from the outside is started, the controller 20 automatically transfers the images recorded on the SD card 22b during the period when the system 1 operated as an action camera. It would be good to have a function to play it back. The user can immediately view and enjoy the video captured by the action camera in the car.

It is particularly advantageous if the system 1 is provided with a video data output terminal such as an HDMI (registered trademark) terminal and has the function of connecting to a large screen monitor. You can watch videos taken with an action camera on a large screen. In this way, the SD card reader 14b plays the role of holding an SD card for playback. When an SD card on which videos such as movies are recorded is inserted into the SD card reader 14b for playback, the movie can be watched on a large screen in the car.

After the system 1 operates as an action camera, the controller 20 controls the current state being imaged by the camera 17 until a predetermined period of time has elapsed since the system 1 was mounted on the vehicle and external power supply was started. It is preferable to display the video on the display 11, and after a predetermined period of time has elapsed, to have a function of automatically reproducing the video recorded during the period of operation as an action camera. The user can adjust the attitude of the camera 17 while viewing the image displayed on the display 11 while the current image captured by the camera 17 is displayed on the display 11.

Cameras installed in drive recorders are generally characterized by an ultra-wide angle and a single focus. This feature is common to the features required for action cameras. In order to use the system 1 as an action camera, it is preferable to provide the system 1 with a waterproof function.

In addition to the joint rail 13 used when installing System 1 on a vehicle, it is recommended to provide a joint part with a mount for attaching to various equipment used in outdoor sports when System 1 is used as an action camera. . Further, the joint rail 13 for mounting on a vehicle may be attached to various mounts for action cameras via adapters. When the system 1 is mounted on a vehicle, the system 1 is generally suspended from above as shown in FIG. 1B, but when used as an action camera, the system 1 is often supported from below. If the system 1 is supported from below using the joint rail 13, the top and bottom will be reversed during imaging. It is preferable that the system 1 determines the orientation using the acceleration sensor 18 (FIG. 2), and determines and records the upper and lower sides of the captured video according to the determination result of the orientation.

When System 1 is operating in drive recorder mode, parking surveillance mode, and action camera mode, a function is provided to record only images for a predetermined period of time before and after a predetermined event occurs on a predetermined SD card. It is preferable to have the controller 20 have it. The time from the time when an event occurrence is detected to the time when video recording starts is referred to as "preceding time", and the elapsed time from the time when event occurrence is detected to the end of video recording is referred to as "delay time". It is preferable to vary the conditions (event conditions) for determining that an event for recording a video has occurred depending on the operation mode. The event condition is a condition that becomes an opportunity (trigger) to record a video.

[Event conditions applied in the 17th embodiment]
Next, event conditions applicable to each operation mode will be explained.

When the operation mode is the drive recorder mode, the event condition may be detection of an impact equal to or higher than a certain threshold, detection of sudden steering operation, detection of sudden brake operation, detection of sudden acceleration, or the like. When the operation mode is parking monitoring mode, the event conditions include detection of movement of an object within the field of view of the camera 17, detection of opening of a window glass, detection of opening of a door, detection of shaking of the vehicle body, and loud noise exceeding a threshold value. It is recommended to use the detection method. When the operation mode is the action camera mode, the event conditions may be changed depending on what kind of outdoor sports the user using the system 1 is doing.

Below, the event conditions when surfing will be explained. For example, takeoff detection may be used as the event condition. Here, takeoff means the moment when you accelerate while paddling while lying down, and stand up riding the momentum of the waves. Since the surfboard starts running at takeoff, it is best to detect takeoff based on the acceleration, motion, etc. at that time. A motion sensor capable of measuring acceleration, angular velocity, attitude angle, azimuth, speed, position, etc. may be used to detect takeoff.

In order to preserve an image of the moment when the surfer catches a wave, the lead time from the time of takeoff detection is preferably set to, for example, 30 seconds or more and 2 minutes or less, and particularly preferably about 1 minute. In order to preserve footage from takeoff to boarding, it is best to decide on the delay time by considering the estimated time from takeoff to boarding. For example, the delay time is preferably set to 1 minute or more and 3 minutes or less, and particularly preferably about 2 minutes. If takeoff is detected again within the delay time, it is preferable to record the video from that point until a predetermined delay time has elapsed.

Advanced users may accelerate the wave by performing a rip action where they hit the bottom at the edge of the wave. At this time, the motion increases and acceleration increases. When this lip action is detected during video recording, it is preferable to re-measure a predetermined delay time from the time of detection. For example, it is preferable to initially set the elapsed time from the occurrence of the event to the time when the lip action is detected. When the elapsed time is initially set, the video is recorded from the time when the lip action is detected until the predetermined delay time has elapsed.

Next, event conditions when skiing or snowboarding will be explained. For example, the event condition may be the detection of the start of skidding. A motion sensor that can measure acceleration, angular velocity, attitude angle, direction, speed, position, etc. may be used to detect the start of slipping. The advance time may be, for example, 30 seconds or more and 2 minutes or less, and particularly preferably about 1 minute. The delay time is preferably set to, for example, 1 minute or more and 3 minutes or less, and particularly preferably about 2 minutes.

Furthermore, the event condition may be detection of a fall. Detection of a fall can be performed using measurement results such as acceleration, angular velocity, attitude angle, and direction by a motion sensor. Furthermore, the event condition may be detection that the speed has reached a predetermined threshold.

The controller 20 may extend the delay time when a predetermined trigger is detected during video recording. While skating, some movement is involved, so it's a good idea to pick up acceleration and motion as triggers. If you're going straight downhill, it's a good idea to use speed as a trigger. If the predetermined trigger is not detected within a predetermined delay time from the event detection time, recording of the video may be terminated when the predetermined delay time elapses from the event detection time.

Next, event conditions when playing golf will be explained. For example, it is preferable to set the detection of address completion as an event condition (trigger) and stop recording when a predetermined delay time has elapsed from the detection of an impact. In order to preserve the image of the follow-through period, the predetermined delay time is preferably set to, for example, 2 seconds or more and 5 seconds or less, and particularly preferably about 3 seconds. Detection of address completion and impact can be detected using a slim watch type sensor (for example, Golf Navi YBW-Putt sold by Jupiter Co., Ltd.) that is attached to the golfer's wrist. By transmitting the detection results from the slim watch-type sensor to the system 1 using a short-range wireless communication (for example, Bluetooth (registered trademark), etc.) function, the system 1 can specify the address completion point and the impact point. .

By linking the system 1 of this embodiment with a swing trainer (for example, the swing trainer GST series sold by Jupiter Co., Ltd.) that has the function of estimating head speed, ball speed, contact rate, flight distance, etc. It would be a good idea to add a function to embed estimated values such as head speed, ball speed, hit rate, flight distance, etc. in the video. Users can verify the quality of their swing by correlating the actual swing video with head speed, ball speed, hit rate, flight distance, etc.

It may be embarrassing to set up the system 1 of this embodiment, which has a recording function, at a golf practice range. For example, if the system is set on a chair behind the batter's box, it is difficult for others to notice the existence of the system 1. It is even better if a fixing device is attached to the system 1 that has the function of maintaining the posture of the system 1 on a chair. Furthermore, if a can holder is provided on a chair or the like, a fixing device may be attached to the system 1 that has the function of placing the system 1 in the can holder and maintaining its posture. The system 1 may be provided with an attachment for attaching such a fixation device.

When golfers go to the driving range, it is common to hit between 100 and 300 balls at a time. For example, under the condition that approximately 10 seconds of video is recorded for each shot, approximately 3000 seconds of video will be recorded for each practice session. As an example, it is desirable to prepare an SD card with a capacity capable of recording 3000 seconds of video at a resolution of 1080p and a frame rate of 30 fps. Additionally, golfers are more likely to desire a higher frame rate than video resolution in order to verify their own swings. The system 1 preferably has a function of changing the frame rate according to a user's operation. It is even better to have a function to automatically adjust the resolution according to the capacity of the SD card for recording video and the set frame rate. By adjusting the resolution, even if the user sets a high frame rate, it is possible to record video for the required amount of time.

It is preferable to set the frame rate of the video after the address completion is detected to be higher (increase the number of frames) than the video frame rate before the address completion is detected. By lowering the frame rate of the video before the address completion is detected, the total data amount of the video can be reduced.

Instead of all swings, only videos of swings that meet specific conditions may be recorded. For example, it is preferable to record only videos of swings determined to be miss shots and swings determined to be nice shots. The system 1 preferably has a function of distinguishing between nice shots and miss shots. Whether it is a miss shot or not and whether it is a nice shot may be determined based on estimated values such as hit rate, head speed, flight distance, etc. For example, a swing in which the hit ratio is estimated to be 1.4 or more, the head speed is 50 m/s or more, and the flight distance is 260 yards or more may be determined to be a nice shot. Further, it is preferable to determine a swing whose hit rate is estimated to be greater than or equal to 1.2 and less than or equal to 1.3 to be a missed shot.

By recording only the video of a specific shot, the capacity of the SD card can be saved. Furthermore, when the capacity of the SD card is constant, the frame rate and resolution can be increased. The user can play back the video of the nice shot and the video of the miss shot and compare the two. It is particularly preferable that the system 1 has a function of displaying a nice shot video and a miss shot video side by side on one screen when playing video.

As another example, it is preferable to record images of all swings and record marks for identifying nice shots and missed shots together with the images. By using marks for identifying nice shots and missed shots, it is possible to easily extract images of nice shots and missed shots from a long video.

When practicing at the golf driving range, it is a good idea to record the number of balls hit for each club type along with date and time information. Based on this record, the user can know the history of the number of pitches for each type of club. The number of pitches hit can be considered the amount of practice. For example, you can see that a year ago you practiced a lot with the driver, but recently you have been practicing a lot with the irons.

It is a good idea to record information indicating the time interval between hitting one ball and the next at the golf driving range along with the video. For example, the time interval between consecutive hits with the same club is relatively short, and the time interval when changing clubs is relatively long. The time intervals recorded along with the video provide clues as to when the club was changed.

For example, a beginner who does not have a solid basic form goes to a golf driving range to improve his/her basic form. For example, there are various countermeasures for users who want to prevent their left shoulder from opening in order to prevent driver slices. After trying out various measures and finding one that seems to be effective, the same measure is adopted and continued to be used to confirm reproducibility. Check the video of your form during the break, and if it's different from what you imagined, keep hitting again. For example, by comparing your form with a model video posted on a video posting site, you can verify whether you are swinging as you imagined. You can improve by repeatedly recording practice shots and their videos, and checking the videos. Information indicating the time interval between hitting one ball and hitting the next is a clue to finding the point at which the video was checked during this repeated practice.

The above-described event conditions are not only applicable to the system 1 according to the seventeenth embodiment, which has the functions of a drive recorder and an action camera, but can also be applied to a dedicated action camera.

[18th Example]
Next, a system according to the 18th embodiment will be described with reference to FIG. Hereinafter, descriptions of configurations common to those of the plurality of embodiments described above will be omitted.

In the 18th embodiment, key information indicating access authority is stored in the SD card held in at least one of the SD card readers 14a and 14b. The controller 20 reads the key information stored in the SD card held in the SD card reader, and controls access to the SD cards held in the SD card readers 14a and 14b based on the read key information. Having the ability to restrict or allow.

The controller 20 displays on the display 11 an SD card reader that holds an SD card that plays the role of recording images captured by the camera 17, and an SD card reader that holds an SD card that stores key information. It has the function of notifying the user with an image.

FIG. 30 shows an example of an image displayed on the display 11. In the mode display area 31, an icon 52a indicating that a video is recorded on the SD card 22a held in the SD card reader 14a, and key information stored on the SD card 22b held in the SD card reader 14b. An icon 52b indicating .

[Effects of the 18th embodiment]
Next, the excellent effects of the 18th embodiment will be explained. Access to the SD cards 22a and 22b is restricted or permitted by the key information of the SD card 22b held in one of the SD card readers 14b, thereby increasing the security of the system.

By looking at the image displayed on the display 11, the user can easily know in which SD card reader the SD card 22b storing the key information should be attached. In addition, it is possible to reduce errors in installing the SD card.

[Modification of the 18th embodiment]
For example, the controller 20 may have a function of operating in either an administrator mode or a user mode. The key information to be stored in the SD card 22b may be permission for operation in administrator mode, permission for operation only in user mode, or the like. For example, when operating in administrator mode, controller 20 can initialize the SD card 22a held in SD card reader 14a, but when operating in user mode, , it is preferable to disable initialization processing of the SD card 22a held in the SD card reader 14a. For example, the information stored in the SD card 22a may be divided into information that can only be viewed by an administrator and information that can be viewed by general users. When the controller 20 is operating in the administrator mode, it can read information that only the administrator can view, but when it is operating in the user mode, it can read information that only the administrator can view. It is better to make it unreadable. The controller 20 preferably has a function of operating in a user mode when an SD card storing key information is not held in any SD card reader.

It is preferable to store driver guidance information (for example, video images) in the SD card 22b that stores key information. The controller 20 may read driver guidance information and display it on the display 11 or output audio from the speaker 15. When the SD card storing video images for driver guidance is inserted, the controller 20 may automatically play back the video images for driver guidance. By noticing the information displayed on the display 11 and the information output from the speaker 15, the driver is motivated to drive safely. The administrator may store driver guidance information for each driver in the SD card 22b based on the driving habits of that driver, and provide the information to the driver.

For example, a driver who has a habit of ignoring temporary stops may be given an SD card 22b that stores information urging them to stop. When the controller 20 analyzes the image captured by the camera 17 and detects a stop sign, it is preferable to output information prompting a stop from the display 11 or the speaker 15. As information to prompt the driver to stop, for example, it is preferable to output a voice saying, "Let's stop at the place where there is a stop sign." For example, a driver who frequently makes sudden steering operations may be given an SD card 22b that stores information urging him not to make sudden steering operations.

Managers can learn about each driver's driving habits by viewing the video that is constantly recorded while the vehicle is in motion. Additionally, by associating the video recorded on the SD card with location information, it is possible to identify locations where dangerous driving occurred in the past. It is advisable for the administrator to add this position information to the information for driver guidance and store it. When the controller 20 detects that the vehicle is approaching a place where the driver has engaged in dangerous driving in the past, it is preferable that the controller 20 outputs information from the display 11 or the speaker 15 to call attention not to engage in dangerous driving. Further, when the controller 20 detects the occurrence of dangerous driving of the same type as the dangerous driving stored as information for driver guidance, the controller 20 outputs information from the display 11 and the speaker 15 to call attention not to engage in the dangerous driving. It's good to do that. Further, the controller 20 may output, from the display 11 or the speaker 15, information to call attention not to engage in dangerous driving when an event that predicts the occurrence of dangerous driving occurs. For example, when a traffic light is detected in an image captured by the camera 17, information that alerts the user not to ignore the signal may be output from the display 11 or the speaker 15. For example, when a pedestrian is detected in the video imaged by the camera 17, it is preferable to output information from the display 11 or the speaker 15 to alert the user to be careful of the pedestrian.

As a means of notifying the user of the SD card 22b storing the key information, a sign indicating the key information is placed on the surface of the casing near the SD card reader 14b into which the SD card 22b storing the key information is to be inserted. It is good to have one. Further, when the controller 20 detects that the SD card 22b in which key information is stored is inserted into the wrong SD card reader, the controller 20 displays information on the display 11 or the speaker prompting the user to insert the SD card 22b into the correct SD card reader. It is best to output from 15.

[19th Example]
Next, the system 1 according to the nineteenth embodiment will be described with reference to FIG. 31. Hereinafter, descriptions of configurations common to those of the plurality of embodiments described above will be omitted.

In the nineteenth embodiment, the controller 20 stores images having a mutually complementary relationship in the SD cards 22a and 22b held in the two SD card readers 14a and 14b, and the two SD cards 22a and 22b. Record the identifying information that associates the. Furthermore, when an SD card with identification information recorded is held in only one SD card reader, a function is provided to notify the user through the display 11 and speaker 15 that there is another SD card that complements each other. have

FIG. 31 shows an example of an image displayed on the display 11. As an example, an icon 55 is displayed in the mode display area 31 to indicate that images captured by the camera 17 are recorded alternately on one SD card 22a and the other SD card 22b. SD card 22a
and 22b form a pair, and identification information indicating that the recorded videos complement each other to form one video is stored in the SD cards 22a and 22b.

When only one SD card is inserted into the SD card reader, the controller 20 displays the message "One of the two SD cards forming the pair has been inserted. The other SD card forming the pair has also been inserted. Do you want to continue processing?'' is displayed on the display 11. The user can select "Yes" or "No" by operating the operation button 12.

If the user selects "Yes", the controller 20 continues processing. For example, images are recorded only on the installed SD card. If the user selects "No", the controller 20 waits for processing until another SD card is inserted into the SD card reader.

Further, when only one of the two paired SD cards is removed from the SD card reader, the controller 20 may notify the user that the paired SD card remains in the SD card reader.

[Effects of the 19th embodiment]
Next, the effects of the nineteenth embodiment will be explained. When a user attaches or removes an SD card from an SD card reader, it becomes difficult for the user to forget to attach or remove one of two SD cards that have a mutually complementary relationship. It is possible to avoid a situation where two SD cards having a mutually complementary relationship are scattered and no useful images can be obtained.

[Modification of the 19th embodiment]
As a mutually complementary relationship, for example, one SD card is initialized with a general-purpose format, and the other is an SD card initialized with a unique format, and the video recorded on both is the same. It is good to have a relationship that is . Depending on the device to be played back, the video can be played back by installing an SD card in a format supported by that device. For example, the FAT format may be adopted as a general-purpose format. For example, a format called YP format may be adopted as a unique format.

When the FAT format SD card is removed from the SD card reader and the YP format SD card is installed, the controller 20 may display a message on the display 11 prompting the user to install the FAT format SD card.

The controller 20 may record video in YP format on both SD cards attached to two SD card readers. At this time, if one of the SD cards is removed and a FAT format SD card is installed, the controller 20 may display a message on the display 11 prompting the user to install a YP format SD card. Alternatively, a message may be displayed on the display 11 asking the user whether it is okay to initialize the newly installed FAT format SD card in the YP format.

When an SD card that does not store key information is inserted into an SD card reader that should be used to insert an SD card that stores key information, the controller 20 sends a message prompting the user to insert an SD card that stores key information. is preferably displayed on the display 11.

[Twentieth example]
Next, the system 1 according to the 20th embodiment will be described with reference to FIG. 32. Hereinafter, descriptions of configurations common to those of the plurality of embodiments described above will be omitted.

In the twentieth embodiment, the controller 20 has the function of initializing the SD cards 22a and 22b held in the SD card readers 14a and 14b. When a user performs an operation to initialize an SD card held in one SD card reader, the controller 20 receives information specifying the SD card to be initialized specified by the user and waits for confirmation of initialization execution. It has a function of displaying the status on the display 11. The controller 20 has a function of executing initialization processing after receiving a confirmed response from the user.

FIG. 32 shows an example of an image displayed on the display 11. A graphic representing the external shape of the system 1 is displayed in the video display area 30 so that the positions of the SD card insertion slots 10a and 10b can be seen. Furthermore, the SD card insertion slot in which the SD card to be initialized specified by the user is inserted is displayed separately from other SD card insertion slots, and a message is displayed requesting confirmation whether or not to initialize. . For example, the message "Do you want to initialize?" is displayed. The user can select "Yes" or "No".

If the user selects "Yes", the controller 20 initializes the SD card specified by the user. If the user selects "No", the controller 20 cancels the initialization process.

[Effects of the 20th embodiment]
Next, the effects of the 20th embodiment will be explained. Since the controller 20 executes initialization after waiting for a confirmation response from the user during initialization processing, it is possible to prevent an unexpected storage medium from being initialized due to a user's operational error. As a result, it is possible to prevent images that one does not want to erase from being erased.

Since the position of the SD card slot in which the specified SD card to be initialized is inserted is displayed graphically, the user can easily correct the mistake if he or she makes a mistake in specifying the SD card to be initialized. can be noticed.

[21st Example]
Next, the system 1 according to the twenty-first embodiment will be described with reference to FIG. 33. Hereinafter, descriptions of configurations common to those of the plurality of embodiments described above will be omitted.

FIG. 33 is a perspective view of the system 1 according to the twenty-first embodiment, and a plan view of the SD cards 22a and 22b installed in the system 1. In the twenty-first embodiment, identification marks are displayed on each of the SD card insertion slots 10a and 10b of the system 1. The identification mark 60a displayed near one SD card insertion slot 10a and the identification mark 60b displayed near the other SD card insertion slot 10b are different in at least one of shape and color. In the example shown in FIG. 33, one identification mark 60a has a star shape, and the other identification mark 60b has a triangular shape.

The system 1 includes stickers 61a and 61b for pasting on the SD card. The stickers 61a and 61b are attached with identification marks having the same shape and color as those attached to the SD card insertion slots 10a and 10b, respectively. For example, one sticker 61a has a star-shaped identification mark printed on it, and the other sticker 61b has a triangular identification mark printed on it.

[Effects of the 21st embodiment]
Next, the excellent effects of the twenty-first embodiment will be explained. The user can associate the SD cards with the SD card insertion slots by attaching stickers 61a and 61b to the SD cards 22a and 22b, respectively. When a user inserts an SD card into an SD card reader, the user can easily know which SD card slot to insert by looking at the identification mark. As a result, it is possible to reduce the number of incorrectly inserted SD cards.

[Modification of the 21st embodiment]
The controller 20 may cause the SD card attached to the SD card reader to store information that specifies the identification mark associated with the SD card reader. For example, if the SD card 22a storing information for identifying a star-shaped identification mark is mistakenly inserted into the SD card insertion slot 10b associated with a triangular identification mark, the controller 20 will read the identification mark from the SD card 22a. By reading identifying information, incorrect attachment can be detected. When the controller 20 detects incorrect attachment, it is preferable that the controller 20 displays a message on the display 11 notifying the user of the incorrect attachment. For example, a message prompting the user to insert an SD card with a triangular sticker attached may be displayed. The user can notice the incorrect attachment by looking at the message displayed on the display 11.

[22nd Example]
Next, a system 1 according to a twenty-second embodiment will be described with reference to FIGS. 34A and 34B. Hereinafter, descriptions of configurations common to those of the plurality of embodiments described above will be omitted.

FIG. 34A is a perspective view of the system 1 according to the twenty-second embodiment. One SD card insertion slot 10b is provided on the top surface of the casing of the system 1, and the other SD card insertion port 10a is provided on the side surface of the system 1. The top surface of the housing faces the windshield or ceiling of the vehicle, and the space between the two is narrow. Therefore, it is difficult for the user to insert or remove the SD card through the SD card insertion slot 10b provided on the top surface. On the other hand, it is relatively easy to insert or remove the SD card through the SD card insertion slot 10a provided on the side.

The SD card 22a inserted into the SD card reader 14a corresponding to one SD card insertion slot 10a is used for applications that require frequent insertion and removal, and the SD card reader 14b corresponding to the other SD card insertion slot 10b is used for applications that require frequent insertion and removal. The SD card 22b installed in the SD card 22b is used for applications that do not require frequent attachment and detachment.

The system 1 informs the user of the role played by the SD card based on the difference in the ease with which the SD card can be inserted into and removed from the two SD card readers 14a and 14b.

[Effects of 22nd Example]
By sensing that it is difficult to insert and remove the SD card through the SD card insertion slot when installing the SD card, the user can become aware of the role of the SD card inserted through the SD card insertion slot. For example, if it is difficult to insert or remove the SD card through the SD card slot, the user may be advised that the SD card inserted into the SD card reader through the SD card slot is not intended to be carried around, but to be used while the card is inserted. I notice that. On the other hand, when the SD card is easily inserted and removed through the SD card insertion slot, the user realizes that the SD card inserted into the SD card reader through the SD card insertion slot is for portable use.

[Modification of 22nd embodiment]
When the system 1 is mounted on a vehicle, it is preferable that one SD card reader is placed in a position where it is more difficult to mount an SD card than the other SD card reader. The system 1 may inform the user of the role of the SD card held in the SD card reader based on the difference in the position of the SD card reader.

For an easy position to install the SD card, for example, when the case is mounted on a vehicle, there is an empty space on the surface of the case that is equivalent to the area from the wrist of a typical adult male. An example is an area that is secured adjacently. For example, it is preferable to use a sphere with a diameter of 10 cm, which corresponds to the wrist of a typical adult male. An example of a location where it is difficult to mount an SD card is an area where such free space is not secured.

For example, the position where it is difficult to mount the SD card may be the surface of the casing facing the front of the vehicle, the top, or a direction in between. As a position where the SD card can be easily installed, it is preferable to set the surface of the casing facing in the left-right direction or toward the interior of the vehicle, for example. The surface facing the bracket for attaching the casing to the vehicle may be located at a position where it is difficult to mount the SD card.

The controller 20 may record, for example, an image captured by the camera 17 during the parking period on an SD card held in an SD card reader placed in a position where it is difficult to install the SD card. To prevent a situation in which a driver accidentally removes an SD card from an SD card reader when parking a vehicle, resulting in being unable to record video during the parking period to occur.

As shown in FIG. 34B, a cover 62 that can be opened and closed may be attached to the SD card insertion slot 10b to make it difficult for the SD card to pass through. It is preferable that the SD card insertion slot 10a, which allows the SD card to easily pass therethrough, is always open.

[23rd Example]
Next, a system 1 according to a twenty-third embodiment will be described with reference to FIG. 35. Hereinafter, descriptions of configurations common to those of the plurality of embodiments described above will be omitted.

FIG. 35 is a perspective view of the system 1 according to the twenty-third embodiment. The housing of the system 1 is provided with SD card insertion slots 10a and 10b. SD card readers 14a and 14b are arranged within the housing corresponding to the SD card insertion slots 10a and 10b. The SD card readers 14a and 14b are configured to hold SD cards of different sizes. For example, one SD card reader 14a holds a relatively small micro SD card, and the other SD card reader 14b holds a normal sized SD card.

The sizes of the SD card insertion slots 10a and 10b are different from each other corresponding to the difference in the size of the SD cards they hold. For example, the SD card insertion slot 10a into which a micro SD card is inserted is smaller than the SD card insertion slot 10b into which a normal sized SD card is inserted.

The system 1 informs the user of the roles played by the SD cards held in the SD card readers 14a and 14b by having the two SD card insertion slots 10a and 10b having different sizes.

[Effects of 23rd Example]
Next, the excellent effects of the twenty-third embodiment will be explained. The user can see the size of the SD card insertion slots 10a and 10b and realize the role of the SD card inserted into the SD card reader through the SD card insertion slots. For example, the user realizes that a normal-sized SD card inserted through the large SD card insertion slot 10b will be difficult to lose when being carried around, and as a result, the SD card inserted through the SD card insertion slot 10b is suitable for carrying. I realize that it is. On the contrary, it will be noticed that the micro SD card inserted through the smaller SD card insertion slot 10a is, in principle, intended to be used while always being attached to the SD card reader 14a.

For example, there is a provision that an SD card with constantly recorded images must be submitted to the administrator each time the vehicle is driven, and an SD card with event records must be submitted to the administrator only when a predetermined event occurs. In this case, it is better to always record on a normal sized SD card and record events on a micro SD card.

[24th Example]
Next, the system 1 according to the twenty-fourth embodiment will be described with reference to FIG. Hereinafter, descriptions of configurations common to those of the plurality of embodiments described above will be omitted.

The controller 20 has a function of detecting that an error has occurred in each of the SD cards 22a and 22b held in the two SD card readers 14a and 14b. When it detects that an error has occurred in the SD card held in one SD card reader and also detects that the SD card with the error has been removed from the SD card reader, the other SD card is also removed. It has a function of displaying a message on the display 11 prompting the person in charge of maintenance (administrator) to submit the message.

FIG. 36 shows an example of an image displayed on the display 11. In the video display area 30, a message is displayed saying, "The SD card in which the error occurred has been removed. Please also remove the other SD card and submit it to the administrator."

[Effects of 24th Example]
Next, the excellent effects of the twenty-fourth embodiment will be explained. By inspecting not only the SD card where an error has occurred but also the SD card where no error has occurred, it becomes easier to isolate the cause of the error. Errors include, for example, SD card failure, writing failure, and exceeding a specified number of overwrites. By seeing the message displayed on the display 11, the driver is prevented from forgetting to remove the SD card or forgetting to submit it to the maintenance person.

[25th Example]
Next, the system 1 according to the twenty-fifth embodiment will be described with reference to FIG. 37. Hereinafter, descriptions of configurations common to those of the plurality of embodiments described above will be omitted.

FIG. 37 is a block diagram showing partial functions of the system 1 according to the twenty-fifth embodiment. The SD cards 22a and 22b are provided with mechanical write-protect switches 62a and 62b that can be turned on and off by a user's external operation. When the write inhibit switches 62a and 62b are respectively turned on, writing to the SD cards 22a and 22b is prohibited. One SD card reader 14b includes an actuator 63 that turns on a write inhibit switch 62b of the attached SD card 22b. Based on a command from the controller 20, the actuator 63 turns on the write inhibit switch 62b of the SD card 22b installed in the SD card reader 14b. The actuator 63 that turns on the write-protect switch 62b can be realized by, for example, a solenoid actuator.

The controller 20 has a function of controlling the actuator 63 to turn on the write-protect switch 62b of the SD card 22b when it detects that a predetermined event has occurred. In particular, the controller 20 preferably has a function of turning on the write inhibit switch 62b after a predetermined period of time has elapsed from the time when the occurrence of the event is detected.

[Effects of 25th Example]
Next, the excellent effects of the twenty-fifth embodiment will be explained. By setting the SD card 22b in a write-inhibited state by the controller 20, it is possible to prevent video recorded at the time of an event from being overwritten.

[26th Example]
Next, a system 1 according to a twenty-sixth embodiment will be explained. Hereinafter, descriptions of configurations common to those of the plurality of embodiments described above will be omitted.

The controller 20 of the system 1 according to the twenty-sixth embodiment can select and execute one of the functions of the first to twentieth embodiments and the twenty-fifth embodiment. For example, it is possible to change which role the SD card should play as explained in the above embodiments by a user's operation. For example, the user can select which role the SD card will play. When SD cards are removed from all SD card readers, it is preferable that the role played by the SD card is returned to a preset basic role. The role of the SD card may not be determined before the SD card is installed in the SD card reader, and the role may be determined after the SD card is installed in the SD card reader.

[27th Example]
Next, a twenty-seventh embodiment will be described. Hereinafter, descriptions of configurations common to those of the plurality of embodiments described above will be omitted.

In the above embodiment, the controller 20 informed the user of the role played by the SD card through the image displayed on the display 11, but in the 27th embodiment, the controller 20 informed the user of the role of the SD card held in two SD card readers. It has the function of informing the user of the mutual relationship of information stored on the card.

The user can know the mutual relationship between the information stored in the SD cards held in the two SD card readers. This increases convenience for the user.

Next, an example will be given of the mutual relationship of information stored in the two SD cards. First, a case will be exemplified in which the information stored in two storage media are both images.

As for the mutual relationship between the images, it is preferable to establish a relationship in which two images form a pair to make sense, and one image alone does not make sense or the intended purpose of use cannot be achieved. When the information stored on the two SD cards has this relationship, the controller 20 may inform the user via the display 11 that the information cannot be used with only one SD card. Since the user is urged to carry two SD cards as a set, it is less likely that the user will forget to carry one SD card and become unable to use the video.

As for the mutual relationship between the images, it is preferable that the imaged object and the imaged time are the same, and that either image has a value of being used independently. Examples of such a relationship include a relationship where the recording formats on the two SD cards are exactly the same, a relationship where the formats of the two SD cards are different, and a relationship where the video frames recorded on the two SD cards are the same. The relationship is that the recording conditions (setting conditions) such as rate and resolution are different; one records all the images acquired during the imaging period, and the other records only the images before and after a predetermined event occurs. Examples of such relationships include a relationship in which both events record images before and after the event occurs, but the types of events are different. When the information stored in the two storage media has this relationship, the controller 20 may notify the user via the display 11 that the video can be used alone and the difference between the two videos. . The user can determine which SD card it is preferable to view video according to the purpose of use.

As for the mutual relationship between the images, it is preferable that the objects to be imaged are the same, but the images were taken at different times, so the purposes of use of the images are different. An example of such a relationship is a relationship in which the images are captured by the camera 17 mounted on a vehicle traveling on a prescribed route, but the captured dates and times are different. When the information stored in the two SD cards has this relationship, the controller 20 may notify the driver of the vehicle of the timing of image capture via the display 11. Since the driver of the vehicle can check previously recorded images while driving on a predetermined route, it is less likely that he or she will make a mistake on the route.

The mutual relationship between the images may be such that the images are images of different objects to be imaged at the same time using different cameras. Such relationships include, for example, the relationship between the image in front of the vehicle and the image inside the vehicle, the relationship between the image in front of the vehicle and the image behind the vehicle, the relationship between the image in front of the work vehicle and the image of the work target area, etc. can be mentioned. When the information stored in the two SD cards has this relationship, the controller 20 preferably informs the user via the display 11 that the two images were captured at the same time. The user can recognize that it is meaningful to play the two videos in synchronized time.

The mutual relationship between the images may be such that the images are captured using the same camera under different environments. Such relationships include, for example, images captured with a camera mounted on a vehicle, and images captured with a camera taken out of the vehicle and attached to equipment for outdoor sports. When the information stored on the two SD cards has this relationship, the controller 20 may inform the user via the display 11 that the two images were captured under different environments. . The user can know that different videos captured under different environments are recorded on the two SD cards. Furthermore, it is particularly preferable that the controller 20 informs via the display 11 in which storage medium and in which environment the captured video is recorded. The user can know in which SD card the video imaged under which environment is recorded.

The mutual relationship between the images is that the images were captured using the same camera, but the image recorded on one SD card is a composite image that is an additional image superimposed on the captured image. good. The additional image may be, for example, a warning image issued when a vehicle approaches a radar device. When the videos recorded on the two SD cards have this relationship, the controller 20 determines that the video recorded on one SD card via the display 11 is a composite image on which an additional image is superimposed. It is a good idea to let the user know that.

As for the mutual relationship between the two videos, it is recommended that the two videos be used to achieve a common purpose, but one is a video that has been prepared in advance, and the other is a video that is recorded on the spot. . As an example of such a relationship, one example is a relationship where one is a promotional video explaining the functions and performance of the system, and the other is a video captured on the spot. When the information stored on the two SD cards has this relationship, the controller 20 displays via the display 11 that one SD card has a pre-prepared video recorded thereon, and the other SD card has the video recorded in advance. should notify the user that recording will occur. The user can know that when the video on one SD card is prepared in advance, the other SD card should be used for recording. Consumers can learn about the system's outline and performance by watching promotional videos, and can actually experience the system's operation and performance by watching videos recorded on the spot.

The mutual relationship between the videos may be such that one video is captured by a camera, and the other video is a template image for extracting a specific image from the video captured by the camera. The controller 20 preferably informs the user via the display 11 that the image recorded on one of the SD cards is a template image for image recognition, and that the other is an SD card for image recording. The user can extract various images by adding or modifying the template image.

Next, a case will be described in which the information stored in one of the two storage media is a video, and the information stored in the other is data other than video.

The mutual relationship between the pieces of information may be such that one piece of information is an image captured by a camera, and the other piece of information is information (key information) indicating authority to access the SD card. The controller 20 may inform the user via the display 11 that the information stored in one of the SD cards is information indicating access authority. The user can know that the SD card is required as a key to permit predetermined access privileges in order to access the video.

The mutual relationship between the pieces of information may be such that one piece of information is an image captured by a camera mounted on a vehicle, and the other piece of information is log data that records vehicle information in chronological order. The controller 20 preferably informs the user via the display 11 that one of the images is an image captured by a camera mounted on the vehicle, and the other is log data. The user can learn that useful information regarding the driving of the vehicle can be obtained by combining the images recorded on the two SD cards and the log data.
@
In each of the above-mentioned embodiments, a system mainly equipped with two SD card readers has been described, but it is obvious that three or more SD card readers may be mounted. .

It goes without saying that each of the above-mentioned embodiments is merely an example, and that the configurations shown in the different embodiments can be partially replaced or combined. Each component described in each example may be combined arbitrarily. Further, the invention and each component described in the means for solving the problems may be further applied to a combination of each component of each embodiment. Similar effects due to similar configurations in a plurality of embodiments will not be mentioned for each embodiment. Furthermore, the invention is not limited to the embodiments described above. For example, it will be obvious to those skilled in the art that various changes, improvements, combinations, etc. are possible.

1 Drive recorder 3 Windshield 4 Room mirror 5 Cigarette socket 6 Power cable 10a, 10b SD card slot 11 Display 12 Operation buttons 13 Joint rails 14a, 14b SD card reader 15 Speaker 16 GPS receiver 17, 17a, 17b Camera 18 Acceleration Sensor 19 Communication circuit 20 Controller 20a CPU
20b ROM
20c RAM
20d Timer 20e, 20f DMA controller 20g, 20h Buffer memory 21 Database 22a, 22b SD card 22c SDIO card 30 Video display area 31 Mode display area 32 Time display area 33 Video captured by camera 34 Image showing alarm information 37 Frame rate Icon 38 indicating the SD card in operating state Icon 40 indicating the format of the SD card Icon 41a indicating the interface standard of the media storage unit Icon 41b indicating the SD card that records video Icon 41b indicating the SDIO card with wireless communication function Icon 42a indicating the SD card for recording video Icon 42b indicating the SD card recording the event conditions Markers 44a to 44d indicating that an event has occurred 44a to 44d Buttons 45a and 45b for specifying the mode Camera and SD card reader Icons 46a and 46b indicating correspondence with connection terminal 47a Icon 47b indicating that video is to be recorded on the SD card Icon 48 indicating that video recorded on the SD card is to be displayed on the display Current video 49 Past video 50 Icon 51a Icon 51b indicating that images captured while mounted on the vehicle are recorded on one SD card Icon 52a Image indicating that images captured while being taken out of the vehicle are recorded on the other SD card Icon 52b indicating that the key information is recorded on one SD card Icon 53a and 53b indicating that key information is stored Icon 55 indicating the SD card Icon 60a and 60b indicating that the video is recorded alternately Identification marks 61a, 61b indicating the correspondence relationship Seals 62a, 62b Write-protect switch 63 Actuator

Claims (4)

A system comprising multiple insertion slots and a function to initialize a removable storage medium,
A graphic representing the external shape of the system is displayed so that the position of the insertion slot for the storage medium can be identified, and the insertion slot in which the storage medium to be initialized specified by the user is inserted is displayed to be distinguished from other insertion slots. In addition, it has a function that displays a message asking you to confirm whether or not to initialize.
An identification mark is displayed on the casing near each of the plurality of insertion openings, and an identification mark displayed on the casing near one insertion opening and an identification mark displayed on the casing near the other insertion opening. An identification mark is a system characterized by having a configuration that differs in at least one of shape and color. A plurality of stickers are attached to the storage medium, and each sticker has an identification mark of the same shape and color as the identification mark affixed to the casing near the respective insertion slot. 2. The system according to claim 1, wherein the system has a configuration in which: The storage medium stores information specifying an identification mark associated with the reader of the storage medium, and has a function of reading information specifying the identification mark from the storage medium and detecting incorrect attachment. A control means is provided with a function of displaying a message on a display notifying the user of the incorrect attachment when the incorrect attachment is detected, and displaying a message prompting the user to attach the storage medium to which the sticker of the correct identification mark is affixed. 3. The system of claim 2, further comprising: A program for causing a computer to realize the functions of the control means of the system according to claim 3.