JP2022172259A - On-vehicle device and transmitting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an on-vehicle device and a transmitting device that enable a road-to-vehicle communication to be used for on-vehicle camera control.

SOLUTION: An on-vehicle device 150 is an on-vehicle device that controls a camera 14 provided on a vehicle. The on-vehicle device comprises: a receiving unit 11b that receives a signal for changing a photographing condition of the camera from a transmitting device outside the vehicle; and a control unit 16 for changing the photographing condition of the camera according to the signal.

SELECTED DRAWING: Figure 3

COPYRIGHT: (C)2023,JPO&INPIT

Description

The present invention relates to an in-vehicle device and a transmission device.

Patent Document 1 describes a traffic communication system that performs wireless communication (that is, road-to-vehicle communication) between a roadside device, which is a communication device installed on the roadside, and a vehicle-mounted device, which is a communication device mounted on a vehicle. ing.

In this traffic communication system, signal information indicating the turn-on signal of a traffic signal at an intersection is transmitted from a roadside device to a vehicle-mounted device. When the vehicle-mounted device determines that the predetermined arrow signal is lit based on the signal information received from the roadside device, the vehicle-mounted device enlarges and displays the arrow signal on the display as driving assistance.

JP 2012-48293 A

In recent years, in-vehicle cameras are becoming popular for applications such as electronic mirrors and drive recorders.

However, although the traffic communication system described in Patent Document 1 uses the roadside unit to assist the driving of the vehicle, it does not consider the presence of the vehicle-mounted camera. There's a problem.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide an in-vehicle device and a transmission device that enable road-to-vehicle communication to be utilized for in-vehicle camera control.

A roadside unit according to a first aspect is a roadside unit used in a traffic communication system, and includes a communication unit that performs wireless communication with a vehicle passing through a road, and an image captured by a first camera installed around the road. and at least one processor that obtains When the at least one processor determines that the vehicle is under a specific situation based on the captured image, the at least one processor transmits from the communication unit a signal for changing imaging conditions of a second camera provided in the vehicle.

A roadside unit according to a second aspect is a roadside unit used in a traffic communication system, and includes a communication unit that performs wireless communication with a vehicle passing through a road, and a signal for changing photographing conditions of a camera provided in the vehicle. and at least one processor transmitting from the communication unit.

A vehicle-mounted device according to a third aspect is a vehicle-mounted device used in a traffic communication system, and includes a notification unit that notifies an occupant of a vehicle, and a signal for changing photographing conditions of a camera provided in the vehicle from a roadside device. and at least one processor for causing the notification unit to notify that the imaging conditions of the camera are to be changed when the imaging conditions differ from the imaging conditions currently set for the camera. .

A traffic communication system according to a fourth aspect includes the roadside unit and the vehicle according to the first aspect.

ADVANTAGE OF THE INVENTION According to one aspect of the present invention, it is possible to provide an in-vehicle device and a transmission device that enable road-to-vehicle communication to be utilized for in-vehicle camera control.

It is a figure which shows the structure of the traffic communication system which concerns on one Embodiment. It is a figure which shows the structure of the roadside unit which concerns on one Embodiment. It is a figure showing composition of vehicles concerning one embodiment. It is a figure which shows the view|field angle (before change) of the vehicle-mounted camera which concerns on one Embodiment. It is a figure which shows the view|field angle (after a change) of the vehicle-mounted camera which concerns on one Embodiment. It is a flowchart which shows operation|movement of the roadside unit which concerns on one Embodiment. FIG. 5 is a diagram illustrating an example of a specific situation according to one embodiment; 4 is a flow chart showing the operation of the vehicle-mounted device according to one embodiment; FIG. FIG. 4 is a diagram showing operations in one embodiment;

A traffic communication system according to one embodiment will be described with reference to the drawings. In addition, in the following description of the drawings, the same or similar reference numerals are given to the same or similar parts.

(Configuration of traffic communication system)
First, the configuration of a traffic communication system according to one embodiment will be described. FIG. 1 is a diagram showing the configuration of a traffic communication system 1 according to one embodiment.

As shown in FIG. 1, the traffic communication system 1 has a vehicle 100 passing on a road and a roadside unit 200 installed on the roadside around the road. In FIG. 1, vehicles 100A and 100B are illustrated as vehicles 100, and roadside machines 200A and 200B are illustrated as roadside machines 200. As shown in FIG. As the vehicle 100, an automobile such as an ordinary automobile or a light automobile is exemplified, but any vehicle that travels on roads, such as a motorcycle, may be used.

Each vehicle 100 is equipped with an in-vehicle device 150 that performs wireless communication. The vehicle-mounted device 150 performs road-to-vehicle communication with the roadside device 200 .

The roadside device 200 is installed around the road. The roadside unit 200 may be installed at each intersection on a general road or may be installed on the roadside of an expressway, but the case where the roadside unit 200 is installed around the intersection will be mainly described below.

In the example shown in FIG. 1 , the roadside device 200A is installed on a traffic signal (traffic signal light) 300 or its support, and operates in cooperation with the traffic signal 300 . For example, the roadside device 200A transmits a radio signal including signal information regarding the traffic signal 300 to the vehicle 100 (vehicle device 150).

For such road-to-vehicle communication, wireless communication by broadcasting to an unspecified number of destinations may be used. Alternatively, the road-to-vehicle communication may use multicast wireless communication with a specific number of destinations, or unicast wireless communication with a specific single number as a destination.

Each roadside device 200 is connected to the central device 400 via a communication line. A roadside vehicle sensor may be connected to the central unit 400 via a communication line. The central unit 400 receives vehicle information including the position and speed of the vehicle 100 received by the roadside device 200 from the vehicle-mounted device 150 from each roadside device 200 . The central unit 400 may further receive vehicle sensing information from roadside sensors installed on each road.

The central unit 400 collects and processes various traffic information based on the received information, and manages road traffic in an integrated manner. For example, the central device 400 may transmit signal information to instruct the traffic signal 300 to switch the light color.

(Configuration of roadside unit)
Next, the configuration of the roadside machine 200 according to one embodiment will be described. FIG. 2 is a diagram showing the configuration of the roadside machine 200 according to one embodiment.

As shown in FIG. 2 , the roadside device 200 has a communication section 21 , a control section 22 and an interface 23 .

The communication unit 21 has an antenna 21a, a reception unit 21b, and a transmission unit 21c, and performs wireless communication via the antenna 21a. The communication unit 21 performs road-to-vehicle communication with the vehicle 100 (vehicle device 150). As described above, road-to-vehicle communication can be unicast, broadcast, or multicast.

The antenna 21a may be an omnidirectional antenna or a directional antenna having directivity. The antenna 21a may be an adaptive array antenna whose directivity can be dynamically changed.

The communication unit 21 has a reception unit 21 b that converts a radio signal received by the antenna 21 a into reception data and outputs the reception data to the control unit 22 . The communication unit 21 also has a transmission unit 21c that converts transmission data output from the control unit 22 into a radio signal and transmits the radio signal from the antenna 21a.

The wireless communication system of the communication unit 21 may be a system based on the T109 standard of ARIB (Association of Radio Industries and Businesses), or V2X (Vehicle -to-everything) standard or a wireless LAN (Local Area Network) standard such as IEEE (Institute of Electrical and Electronics Engineers) 802.11 series. The communication unit 21 may be configured to be compatible with all of these communication standards.

The control unit 22 controls various functions of the roadside device 200 . The controller 22 has at least one memory 22b and at least one processor 22a electrically connected to the memory 22b. The memory 22b includes volatile memory and nonvolatile memory, and stores information used for processing in the processor 22a and programs executed by the processor 22a. The processor 22a performs various processes by executing programs stored in the memory 22b.

The interface 23 is wired or wirelessly connected to the roadside camera 500 and the signal controller 600 . Also, the interface 23 is connected to the central unit 400 .

The roadside camera 500 is a camera (first camera) installed on the roadside around the road. The roadside camera 500 images the road and the vehicle 100 passing through the road. The roadside camera 500 outputs the captured image to the control section 22 via the interface 23 . It is assumed that the captured image is a moving image. Although FIG. 2 illustrates an example in which the roadside camera 500 is configured separately from the roadside device 200 , the roadside camera 500 may be configured integrally with the roadside device 200 .

Signal controller 600 is a device that controls traffic signal 300 . The signal controller 600 may be configured separately from the traffic signal 300 or may be configured integrally with the traffic signal 300 . Alternatively, the signal controller 600 may be configured integrally with the roadside device 200 . The signal controller 600 outputs signal information regarding the color of the signal light for each floor of the traffic signal 300 to the controller 22 via the interface 23 . A stair is the minimum unit of signal display switching at one intersection.

In the roadside device 200 configured as described above, the processor 22a acquires the captured image from the roadside camera 500, and determines that the vehicle 100 is in a specific situation based on the captured image. A signal for changing the photographing conditions of the camera is transmitted from the communication unit 21 . For example, the signal for changing the shooting conditions is a signal for widening the angle of view of the camera (in-vehicle camera) provided in the vehicle 100 . Details of such operations will be described later.

(Vehicle configuration)
Next, the configuration of the vehicle 100 according to one embodiment will be described. FIG. 3 is a diagram showing the configuration of vehicle 100 according to one embodiment.

As shown in FIG. 3, the vehicle 100 includes a communication unit 11, a GNSS (Global Navigation Satellite System) receiver 12, a notification unit 13, at least one camera 14, a drive control unit 15, and a control unit 16. have

The communication unit 11 has an antenna 11a, a receiving unit 11b, and a transmitting unit 11c, and performs wireless communication via the antenna 11a. The communication unit 11 performs road-to-vehicle communication with the roadside device 200 . As described above, road-to-vehicle communication can be unicast, broadcast, or multicast.

The communication unit 11 has a reception unit 11 b that converts a radio signal received by the antenna 11 a into reception data and outputs the reception data to the control unit 16 . The communication unit 11 also has a transmission unit 11c that converts transmission data output from the control unit 16 into a radio signal and transmits the radio signal from the antenna 11a.

The wireless communication system of the communication unit 11 may be a system conforming to the ARIB T109 standard, a system conforming to the 3GPP V2X standard, or conforming to a wireless LAN standard such as the IEEE802.11 series. It may be a method that The communication unit 11 may be configured to be compatible with all of these communication standards.

The GNSS receiver 12 performs positioning based on GNSS satellite signals and outputs GNSS position information indicating the current geographical position (latitude and longitude) of the vehicle 100 to the control unit 16 .

The notification unit 13 notifies the driver of the vehicle 100 of information under the control of the control unit 16 . The notification unit 13 has a display 13a for displaying information and a speaker 13b for outputting information by voice.

Camera 14 is a camera (second camera) installed in vehicle 100 . For example, the camera 14 includes a side camera that captures images obliquely behind and to the sides of the vehicle, and a rear camera that captures images behind the vehicle. Camera 14 may further include a front camera that captures an image in front of the vehicle. The camera 14 outputs the captured image to the control section 16 . It is assumed that the captured image is a moving image.

In one embodiment, camera 14 is used for electronic mirror functionality to replace physical side and rear mirrors. Specifically, the control unit 16 causes the display 13a to display the captured image from the camera 14 in real time. The camera 14 may be used for drive recorder functions. Specifically, the control unit 16 causes the image captured by the camera 14 to be stored in the memory 16b or an external storage medium.

The drive control unit 15 controls an engine or motor as a power source, a power transmission mechanism, a brake, and the like. When the vehicle 100 is an automatic driving vehicle, the drive control section 15 may control the drive of the vehicle 100 in cooperation with the control section 16 .

The control unit 16 controls various functions of the vehicle 100 (vehicle device 150). The control unit 16 has at least one memory 16b and at least one processor 16a electrically connected to the memory 16b. The memory 16b includes volatile memory and nonvolatile memory, and stores information used for processing in the processor 16a and programs executed by the processor 16a. The processor 16a performs various processes by executing programs stored in the memory 16b.

In one embodiment, the communication unit 11 , the GNSS receiver 12 , and the notification unit 13 constitute the vehicle-mounted device 150 . The vehicle-mounted device 150 may include the camera 14 .

In the vehicle-mounted device 150 configured as described above, the communication unit 11 receives from the roadside device 200 a signal for changing the photographing conditions of the camera 14 (vehicle-mounted camera) provided in the vehicle 100 . For example, a signal for changing shooting conditions is a signal for widening the angle of view of the camera 14 . When the photographing condition indicated by the received signal differs from the photographing condition currently set for the camera 14, the processor 16a causes the notification unit 13 to notify that the photographing condition of the camera 14 is to be changed. Details of such operations will be described later.

(View angle of in-vehicle camera)
Next, the angle of view of the vehicle-mounted camera according to one embodiment will be described. 4 and 5 are diagrams showing the angle of view of the vehicle-mounted camera according to one embodiment.

As shown in FIG. 4, the vehicle 100 includes a left side camera 14L, a right side camera 14R, and a rear camera 14B.

The left side camera 14L captures an image of the oblique rear left direction of the vehicle 100 . The right side camera 14R captures an image of the vehicle 100 obliquely to the rear. As a default setting, the angle of view of the left side camera 14L and the right side camera 14R is α1.

Rear camera 14B captures an image behind vehicle 100 . As a default setting, the angle of view of the rear camera 14B is α2.

As shown in FIG. 5 , the vehicle 100 according to one embodiment widens the angle of view of the vehicle-mounted camera based on the signal from the roadside device 200 . Specifically, the angle of view of the left side camera 14L and the right side camera 14R is widened to α11 (α11>α1), and the angle of view of the rear camera 14B is widened to α21 (α21>α2).

(Operation of roadside unit)
Next, operation of the roadside unit 200 according to one embodiment will be described. FIG. 6 is a flow diagram illustrating operation of the roadside unit 200 according to one embodiment.

As shown in FIG. 6, the processor 22a acquires a captured image from the roadside camera 500 in step S11.

In step S<b>12 , the processor 22 a performs image recognition processing on the captured image from the roadside camera 500 . For image recognition, pattern matching technology and image recognition technology based on learning such as reinforcement learning (for example, knowledge base, statistics base, neural network base) can be applied. For example, the processor 22a extracts vehicles and pedestrians in the captured image and identifies the situations of the vehicles and pedestrians.

In step S13, the processor 22a acquires signal information. The process of step S13 is not essential and may be omitted. Moreover, step S13 may be performed before step S11.

In step S14, the processor 22a determines whether or not the vehicle 100 is in a specific situation based on at least the captured image. A specific situation refers to a situation in which the attention of the occupant (driver) of the vehicle 100 is desired to spread over a wide area. A particular situation can also be considered to be one in which the likelihood of an accident involving vehicle 100 is increasing.

FIG. 7 is a diagram illustrating an example of specific situations according to one embodiment.

As shown in FIG. 7, specific situations may include situations in which an emergency vehicle, a two-wheeled vehicle, or a pedestrian is approaching the vehicle 100 . For example, the processor 22a recognizes an emergency vehicle, a two-wheeled vehicle, or a pedestrian approaching to the side or rear of the vehicle 100 by image recognition processing. Then, the processor 22a determines that the vehicle 100 is in the specific situation when an emergency vehicle, a two-wheeled vehicle, or a pedestrian is approaching the vehicle 100 to the side or rear. The emergency vehicle is, for example, a patrol car or an ambulance, and refers to a vehicle that is moving while sounding its siren.

A specific situation may include a situation in which vibrations of a certain magnitude have been detected for a certain period of time. In this case, the specific situation corresponds to the situation that a large earthquake has been sensed. For example, the processor 22a recognizes the blurring of the captured image and its blur width through image recognition processing. judge. If the roadside machine 200 is provided with a vibration sensor, this vibration sensor may also be used for determination.

A specific situation may include a situation that a traffic jam is occurring. For example, the processor 22a uses image recognition processing to recognize the average vehicle speed of each vehicle on the road on which the vehicle 100 passes. Determine that there is. Processor 22a may also consider traffic light information and make such a determination when traffic light 300 indicates a permit to proceed.

A specific situation may include a situation in which a traffic accident has occurred. For example, the processor 22a determines that the vehicle 100 is in a specific situation when it recognizes a traffic accident on or around the road on which the vehicle 100 passes through image recognition processing.

Specific situations may include situations in which vehicle 100 is stopped and vehicle 100 is allowed to proceed. For example, the processor 22a determines that the vehicle 100 is in a specific situation when the traffic signal 300 indicates that the vehicle 100 is permitted to proceed based on the signal information and the vehicle 100 continues to stop for a certain period of time based on the captured image. I judge.

If it is determined that the vehicle 100 is under the specific situation (step S14: YES), the process proceeds to step S15; otherwise (step S14: NO), the process returns to step S11.

In step S15, the processor 22a determines the transmission method to be used for transmission to the vehicle 100 based on the content (type) of the specific situation.

As shown in FIG. 7, when a situation in which an emergency vehicle, a two-wheeled vehicle, or a pedestrian is approaching the vehicle 100 is detected, the processor 22a instructs the vehicle 100 to at least increase the angle of view and increase the resolution. One is determined, and unicast is determined as the transmission method to be used for transmission to vehicle 100 . However, if multiple vehicles 100 with emergency vehicles, two-wheeled vehicles, or pedestrians approaching are detected, processor 22a may decide to multicast to these multiple vehicles.

Here, expanding the angle of view means transmitting from the communication unit 21 a signal for widening the angle of view of the vehicle-mounted camera as a signal for changing the shooting conditions of the vehicle-mounted camera. By transmitting such a signal, it is possible to spread the driver's attention over a wide area on the premise that the vehicle-mounted camera is used for the electronic mirror function. Specifically, the angle of view shown in FIG. 4 is normally used to direct the driver's attention to the rear, while under specific circumstances, the angle of view is widened as shown in FIG. 5 to extend the driver's attention to the sides. be able to.

Increasing the resolution means transmitting from the communication unit 21 a signal for increasing the resolution of the vehicle-mounted camera as a signal for changing the photographing conditions of the vehicle-mounted camera. By transmitting such a signal, it is possible to increase the evidence value of the captured image to be recorded on the premise that the vehicle-mounted camera is used for the drive recorder function. Specifically, under certain circumstances, a captured image can be recorded at a higher resolution while the captured image is normally recorded using a lower resolution to conserve storage capacity.

When a situation is detected in which vibrations of a certain magnitude have been detected for a certain period of time, the processor 22a instructs the vehicle 100 to increase the angle of view and/or increase the resolution. Broadcast is determined as the transmission method to be used for transmission of . In the event of a large earthquake, it is preferable to target as many vehicles as possible, so broadcasting is selected as the transmission method.

When a traffic jam is detected, the processor 22a determines resolution increase as an instruction to the vehicle 100 and broadcast as a transmission method to be used for transmission to the vehicle 100. FIG. However, the processor 22a may decide to enlarge the angle of view as an instruction to the vehicle 100 .

When a situation in which a traffic accident has occurred is detected, the processor 22a determines at least one of angle-of-view enlargement and resolution enhancement as an instruction to the vehicle 100, and broadcast as a transmission method used for transmission to the vehicle 100. to decide.

When it is detected that the vehicle 100 is stopped and that the vehicle 100 can proceed, the processor 22a instructs the vehicle 100 to increase the angle of view or increase the resolution. Unicast is determined as the transmission method to be used for transmission of However, if multiple vehicles 100 in similar situations are detected, the processor 22a may decide to multicast to these multiple vehicles.

If broadcast is determined (step S15: YES), the process proceeds to step S16; otherwise (step S15: NO), the process proceeds to step S17. In step S<b>16 , processor 22 a broadcasts a signal including instructions to vehicle 100 . On the other hand, in step S17, the processor 22a transmits a signal including instructions to the vehicle 100 by unicast or multicast.

(Operation of in-vehicle device)
Next, the operation of the vehicle-mounted device 150 according to one embodiment will be described. FIG. 8 is a flowchart showing the operation of the vehicle-mounted device 150 according to one embodiment.

As shown in FIG. 8, in step S21, the processor 16a determines whether the communication unit 11 has received a signal for changing the photographing conditions (that is, angle of view and/or resolution) of the camera 14, which is an in-vehicle camera. judge.

If the communication unit 11 receives a signal for changing the imaging conditions of the camera 14 (step S21: YES), the processor 16a determines whether the imaging conditions indicated by this signal are currently applied to the camera 14 in step S22. It is determined whether or not the photographing conditions are different from those set.

If different (step S22: YES), the process proceeds to step S23; otherwise (step S22: NO), the process proceeds to step S24.

In step S23, the processor 16a causes the notification unit 13 to notify that the photographing conditions of the camera 14 will be changed. For example, the processor 16a causes the display 13a and/or the speaker 13b to output information to the effect that the angle of view of the camera 14 is enlarged and/or information that the resolution of the camera 14 is increased. As a result, it is possible to arouse the attention of the passenger (driver) and inform the passenger that there is an instruction from the outside. Here, the processor 16a may advance the process to step S24 when there is a confirmation operation from the passenger.

In step S24, the processor 16a changes the photographing conditions of the camera 14 according to the signal received by the communication section 11. FIG.

Note that the processor 16a may return the imaging conditions of the camera 14 to the original settings (for example, default settings) after a certain period of time has passed since the signal for changing the imaging conditions of the camera 14 was received. .

Alternatively, the roadside unit 200 (processor 22a) transmits a signal to the vehicle 100 for restoring the photographing conditions of the camera 14, and the processor 16a resets the photographing conditions of the camera 14 to the original setting in response to the reception of this signal. can be changed back to

(Example)
Next, an example will be described. FIG. 9 is a diagram showing the operation in one embodiment.

As shown in FIG. 9, an arrow signal 300a permitting a right turn is lit at an intersection, but the vehicle 100 stops in front of the stop line without the driver noticing the signal. Such a situation corresponds to a situation in which the vehicle 100 is stopped and the vehicle 100 can proceed.

Under such circumstances, the following vehicle of the vehicle 100 may alert the vehicle by honking its horn or blinking its lights to call attention and start the vehicle, causing the vehicle 100 to start suddenly. In such a case, the driver's attention is focused on starting the vehicle, and he/she neglects to check the blind spots such as left and right turns, which easily causes an accident involving a pedestrian or a two-wheeled vehicle.

Therefore, the roadside unit 200 unicasts the stopped vehicle 100 so as to widen the angle of view of the camera 14 under the condition that the arrow signal is output and there is no traffic jam in the traveling direction of the vehicle 100 . to display a wide range of images. As a result, it is possible to spread the attention of the occupants over a wide range and suppress the occurrence of accidents involving pedestrians and two-wheeled vehicles.

(Other embodiments)
In the above-described embodiment, the roadside unit 200 may include in the signal broadcast to the vehicle 100 information for identifying the lane targeted by this signal. The information for identifying the lane may be lane identification, or may be information indicating the direction in which the vehicle is moving. This can prevent more vehicles 100 than necessary from receiving and processing the broadcast signal.

In the above-described embodiment, when a signal is transmitted to the vehicle 100 by unicast, the roadside unit 200 acquires address information and position information (and speed information) from the vehicle 100, and uses the position information as a captured image. By collation, the vehicle in the captured image and the address information may be associated with each other, and a unicast signal may be transmitted based on this association.

Alternatively, the roadside device 200 recognizes the license plate in the captured image, and transmits a signal including license plate information including the number string (and character string) described on the license plate as destination information, thereby performing unicast transmission. may be realized. When the vehicle 100 receives a signal including destination information that matches its own license plate information, the vehicle 100 changes the photographing conditions according to this signal.

A program that causes a computer to execute each process performed by the vehicle-mounted device 150 or the roadside device 200 may be provided. The program may be recorded on a computer readable medium. A computer readable medium allows the installation of the program on the computer. Here, the computer-readable medium on which the program is recorded may be a non-transitory recording medium. The non-transitory recording medium is not particularly limited, but may be, for example, a recording medium such as CD-ROM or DVD-ROM.

Alternatively, circuits for executing each process performed by the vehicle-mounted device 150 or the roadside device 200 may be integrated, and at least part of the vehicle-mounted device 150 or the roadside device 200 may be configured as a semiconductor integrated circuit (chipset, SoC).

Although the embodiments have been described in detail with reference to the drawings, the specific configuration is not limited to the above, and various design changes can be made without departing from the spirit of the invention.

1: Traffic communication system 11: Communication unit 11a: Antenna 11b: Reception unit 11c: Transmission unit 12: GNSS receiver 13: Notification unit 13a: Display 13b: Speaker 14: Camera 14B: Rear camera 14L: Left side camera 14R: Right Side camera 15: drive control unit 16: control unit 16a: processor 16b: memory 21: communication unit 21a: antenna 21b: reception unit 21c: transmission unit 22: control unit 22a: processor 22b: memory 23: interface 100: vehicle 150: In-vehicle device 200: Roadside device 300: Traffic signal 300a: Arrow signal 400: Central device 500: Roadside camera 600: Signal controller

Claims (8)

An in-vehicle device that controls a camera provided in a vehicle,
a receiving unit that receives a signal for changing the photographing conditions of the camera from a transmitting device outside the vehicle;
A vehicle-mounted device, comprising: a control unit that changes shooting conditions of the camera according to the signal. 2. The vehicle-mounted device according to claim 1, wherein said signal corresponding to the situation of said vehicle is transmitted from said transmission device. the signal includes information for identifying the vehicle;
3. The in-vehicle device according to claim 1, wherein, when said information indicates its own vehicle, said control unit changes photographing conditions of said camera according to said signal. A transmitting device that transmits a signal to an in-vehicle device that controls a camera provided in a vehicle,
and a transmitting unit that transmits a signal for changing imaging conditions of the camera. 5. The transmission device according to claim 4, wherein the transmission unit broadcasts or unicasts the signal according to the situation of the vehicle or the situation around the vehicle. 6. The transmission device according to claim 5, further comprising a control unit that acquires an image of the vehicle and determines a situation of the vehicle or a situation around the vehicle based on the acquired image. . 5. The transmitting device according to claim 4, wherein said transmitter transmits said signal to said vehicle under a specific situation. The transmission device according to claim 4, wherein said transmission unit transmits said signal including information for specifying said vehicle.

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