JP2013072768A - On-vehicle camera system and image display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To promptly display a rear image of a vehicle captured by a rear camera when the vehicle is driven back without wastefully consuming a battery of the vehicle.SOLUTION: An on-vehicle camera system comprises: a mode signal receiving unit for receiving a mode signal indicating a mode selected when a drive mode or a parking mode has been selected; a mode switching data storage unit for storing mode switching data indicating a state of a mode switching from a drive mode to a parking mode when the mode signal indicating that the parking mode has been selected is received, following the mode signal indicating that the drive mode has been selected; a foot brake operating signal receiving unit for receiving a foot brake operating signal of a vehicle; and a control unit for setting a camera to an on-state if the mode switching data is stored in the mode switching data storage unit when the foot brake operating signal is received, and for performing control to display a rear image captured by the camera on a display unit.

Description

  The present invention relates to an in-vehicle camera system and an image display device, and in particular, an in-vehicle camera system and an image display including a camera that captures an image of a rear or side of a vehicle and a display unit that displays the captured image. It relates to the device.

  When stopping a vehicle in a parking lot, especially in Europe and the United States, it is customary to move the vehicle forward and enter the parking lot. Therefore, the next time the vehicle is taken out of the parking lot, the vehicle is moved backward. In view of this, an in-vehicle camera system is widely used, which can capture the rear image of the vehicle and display it on a display unit in the vehicle so that the driver can confirm the rear when the vehicle moves backward.

  For example, in Patent Document 1 (Japanese Utility Model Publication No. Hei 6-74499), when a driver sets the shift lever to reverse mode to reverse the vehicle, the television camera is turned on and a rear image of the vehicle is taken. There is disclosed an in-vehicle television device with a back monitor function that is configured to switch to an operation for displaying an image from a television camera on a television receiver.

  However, in Patent Document 1 described above, since the television camera is turned on after the driver sets the shift lever to the reverse mode, a predetermined waiting time is required until a stable rear image is displayed on the television receiver. It takes time. Therefore, the driver operates the shift lever in a state where the rear image is not displayed on the television receiver. In particular, when you want to rush the vehicle out of the parking lot, you will feel inconvenience. If the television camera is turned on in advance, it is possible to quickly display the rear image. However, keeping the power on at all times only wastes the vehicle battery. There is a problem that the life of the television camera is shortened.

  On the other hand, in the following Patent Document 2 (Japanese Patent Laid-Open No. 2009-78746), when it is determined that the vehicle is approaching a registered point such as a destination of a home, a company, or a guidance route, power supply to the in-vehicle camera is started. An in-vehicle camera system configured to promptly display a stable image of an in-vehicle camera on a display means when a driver sets a shift lever to a reverse mode is disclosed. According to this Patent Document 2, after setting the shift lever to the reverse mode, the driver can move the vehicle backward and stop according to the stable rear image displayed promptly.

Japanese Utility Model Publication No. 6-74499 ([Claim 1], [0012]) JP 2009-78746 A ([0012])

  However, in Patent Document 2 described above, power is supplied to the in-vehicle camera on the condition that the vehicle approaches the registration point regardless of whether the shift lever is set to the reverse mode. If the shift lever is not set to the reverse mode, the battery is wasted. Moreover, since the display of the rear image image | photographed with the vehicle-mounted camera is performed after a shift lever is set to reverse mode, it cannot be denied that some waiting time will generate | occur | produce until display.

  An object of the present invention is to solve the above-described problems, and when a vehicle is moved backward without wasting a vehicle battery, a rear or side image captured by a camera can be quickly displayed. It is an object of the present invention to provide an in-vehicle camera system and an image display device that can be displayed on the screen.

  In order to solve the above-described problem, an invention according to claim 1 of the present application is an in-vehicle camera system including a camera that captures an image of a rear or side of a vehicle and a display unit that displays the captured image. When the drive mode or the parking mode is selected, the parking mode is selected after the mode signal receiving unit that receives the mode signal indicating the selected mode and the mode signal indicating that the drive mode is selected. A mode switching data storage unit for storing mode switching data indicating a mode switching state from the drive mode to the parking mode, and a foot brake operation signal of the vehicle when the mode signal indicating that the vehicle has been operated is received. When receiving the foot brake operation signal, A control unit configured to perform control for setting the camera to an on state and displaying the image captured by the camera on the display unit when the mode switching data is stored in a mode switching data storage unit; It is characterized by providing.

  The invention according to claim 2 of the present application is the in-vehicle camera system according to claim 1, wherein a current position detection unit that detects a current position of the vehicle, a map information storage unit that stores map information including parking lot information, When the foot brake operation signal is received, the control unit stores the mode switching data in the mode switching data storage unit, and includes the detected current position and the parking lot information. Based on the map information, when it is determined that the current position is a parking lot, the camera is set to an on state, and control is performed to display the image captured by the camera on the display unit. And

  The invention according to claim 3 of the present application is the in-vehicle camera system according to claim 1 or 2, wherein the control unit is in the mode switching state other than the mode switching state from the drive mode to the parking mode. Is received, the mode switching data stored in the mode switching data storage unit is cleared.

  The invention according to claim 4 of the present application is such that a camera that captures an image of the rear or side of the vehicle can be connected, and the image display device includes a display unit that displays the captured image. A control signal transmitting unit that transmits a control signal to be set to the power switch of the camera, an image signal receiving unit that receives an image signal related to the image captured by the camera set to an on state, and a drive mode or When the parking mode is selected, the parking mode is selected after the mode signal receiving unit that receives the mode signal indicating the selected mode and the mode signal indicating that the drive mode is selected. When the mode signal indicating the mode is received, the mode indicating the mode switching state from the drive mode to the parking mode is displayed. Mode switching data storage unit for storing mode switching data, a foot brake operation signal receiving unit for receiving the foot brake operation signal of the vehicle, and the mode switching data storage unit when receiving the foot brake operation signal, the mode switching data storage unit stores the mode. When switching data is stored, a control unit that performs control to transmit the control signal to the power switch, receive the image signal, and display the image captured by the camera on the display unit; It is characterized by providing.

  The invention according to claim 5 of the present application is the image display device according to claim 4, wherein a current position detection unit that detects a current position of the vehicle, a map information storage unit that stores map information including parking lot information, When the foot brake operation signal is received, the control unit stores the mode switching data in the mode switching data storage unit, and includes the detected current position and the parking lot information. When it is determined that the current position is a parking lot based on the map information, the control signal is transmitted to the power switch, the image signal is received, and the image captured by the camera is displayed. It is characterized by performing control to be displayed on the part.

  The invention according to claim 6 of the present application is the image signal according to claim 4 or 5, wherein the control unit is in a mode switching state other than the mode switching state from the drive mode to the parking mode. Is received, the mode switching data stored in the mode switching data storage unit is cleared.

  In the invention according to claim 1, in the in-vehicle camera system including a camera that captures a rear or side image of the vehicle and a display unit that displays the captured image, the drive mode or the parking mode is selected. The mode signal receiving unit for receiving a mode signal indicating the selected mode, and the mode signal indicating that the parking mode is selected next to the mode signal indicating that the drive mode is selected. A mode switching data storage unit that stores mode switching data indicating a mode switching state from the drive mode to the parking mode, and a foot brake operation signal receiving unit that receives a foot brake operation signal of the vehicle, When the foot brake operation signal is received, the mode switching data storage unit If the serial mode switching data is stored, to set the camera on, and a control unit that performs control to display the image photographed on the display unit by the camera.

  According to a fourth aspect of the present invention, a camera that captures an image of the rear or side of a vehicle can be connected, and the image display device includes a display unit that displays the captured image. A control signal transmitting unit that transmits a control signal to be set to a state to a power switch of the camera, an image signal receiving unit that receives an image signal relating to the image taken by the camera that is set to an on state, and a drive mode Alternatively, when the parking mode is selected, the parking mode is selected after the mode signal receiving unit that receives the mode signal indicating the selected mode and the mode signal indicating that the drive mode is selected. Mode switching state from the drive mode to the parking mode when the mode signal indicating that A mode switching data storage unit for storing mode switching data, a foot brake operation signal receiving unit for receiving a foot brake operation signal of the vehicle, and a mode switching data storage unit when receiving the foot brake operation signal. A control unit that performs control for transmitting the control signal to the power switch, receiving the image signal, and displaying the image captured by the camera on the display unit when mode switching data is stored; .

  By configuring in this way, when the mode switching state due to the previous operation of the driver is the mode switching state from the drive mode to the parking mode, the camera is set to the on state when the foot brake is operated. In order to display the rear or side image captured by the camera on the display unit, the driver checks the rear or side image displayed on the display unit before setting the shift lever to the reverse mode. be able to. Accordingly, the driver can set the shift lever to the reverse mode and quickly move the vehicle backward while confirming the already displayed image. In addition, the camera is set to the ON state only when the drive mode is switched to the parking mode by the operation during the previous driving and only when the foot brake is operated next time. Unnecessary consumption of the battery of the vehicle due to setting to the on state can be suppressed.

  In the invention according to claim 2 or 5, in the in-vehicle camera system according to claim 1 or the image display device according to claim 4, when the current position of the vehicle is a parking lot, the foot brake is operated next time, Since the subsequent operation is likely to be an operation to move the vehicle backward, setting the camera to the on state in addition to the condition that the current position is a parking lot further suppresses unnecessary drainage of the vehicle battery. can do.

  In the invention according to claim 3 or 6, in the in-vehicle camera system according to claim 1 or 2, or the image display device according to claim 4 or 5, the operation during the previous driving is changed from the drive mode to the parking mode. If it is not in the mode switching state, the foot brake is operated next time, and the subsequent operation is not likely to be an operation to reverse the vehicle, so the mode switching data stored in the mode switching data storage unit is cleared, By not immediately turning the camera on when the foot brake is operated, it is possible to suppress wasteful consumption of the vehicle battery.

1 is a configuration block diagram of an in-vehicle camera system in an embodiment of the present invention. It is a process flowchart of the vehicle-mounted camera system shown in FIG. It is explanatory drawing at the time of making a vehicle advance and park in a parking lot.

  Hereinafter, specific examples of the present invention will be described in detail with reference to examples and drawings. However, the embodiment described below exemplifies an in-vehicle camera system and an image display device for embodying the technical idea of the present invention, and the present invention is specified to the in-vehicle camera system and the image display device. However, the present invention is equally applicable to the in-vehicle camera system and the image display device of other embodiments included in the scope of claims.

  FIG. 1 is a configuration block diagram of an in-vehicle camera system 10 in an embodiment of the present invention.

  The in-vehicle camera system 10 is mounted on a vehicle and has a navigation device 11 (image display device) having a function such as route guidance, and a rear connected to the navigation device 11 to take a rear image of the vehicle and supply the rear image to the navigation device 11. And a camera 12. The rear camera 12 is installed, for example, in the vicinity of the rear spoiler or number plate of the vehicle.

  The navigation device 11 includes a control unit 13, a current position detection unit 14, an autonomous navigation unit 16 having a gyroscope 15, a route search unit 17, a map information storage unit 18, an operation unit 19, a display unit 20, a speaker 21, and mode switching data. A storage unit 22 and input / output units 23 to 27 are provided.

  The control unit 13 includes a CPU 28, a RAM 29, and a ROM 30. The CPU 28 executes a control program stored in the RAM 29 and / or the ROM 30, thereby controlling and supervising operations of each unit of the vehicle navigation device 11 described below. .

  The current position detector 14 receives radio waves (satellite signals) including time information from a plurality of GPS satellites orbiting the earth at predetermined time intervals, and detects the current position of the vehicle based on the received satellite signals. To do.

  The autonomous navigation unit 16 includes a gyroscope 15 that detects the angular velocity of the vehicle, and an input / output unit 23 that supplies the vehicle speed detected by the vehicle speed sensor 31 to the control unit 13. The control unit 13 calculates the current position of the vehicle based on the angular velocity and the vehicle speed supplied from the autonomous navigation unit 16, or information supplied from the autonomous navigation unit 16 based on the current position detected by the current position detection unit 14. Correct based on

  The route search unit 17 is set using the map information stored in the map information storage unit 18, the current position of the vehicle obtained using the current position detection unit 14 or the autonomous navigation unit 16, or the operation unit 19. Based on the starting point and the destination set using the operation unit 19, an optimal travel route from the current position or the starting point to the destination is searched. The route search unit 17 searches for a link from the node of the road corresponding to the current position or the starting point to the node corresponding to the destination by a method such as the Dijkstra method, and calculates the link length (link cost) and required time. The route that accumulates and has the shortest total link length (travel distance) or total required time is searched for as a travel route.

  The map information storage unit 18 stores map information including road data, building data, background data, and text data for searching for a vehicle travel route. The map information may be acquired from an external map information providing server (not shown) and stored in the map information storage unit 18 as the latest map information.

  The road data is composed of node data in which roads are nodes such as inflection points and branch points, and link data in which routes connecting the respective nodes are links. The node data includes node attributes such as node numbers, node position coordinates (latitude / longitude), intersection information and information indicating intersection names, and the number of connection links and connection link numbers.

  Link data includes node numbers that are the start and end points of links, road types for distinguishing expressways, ordinary roads, streets, etc., distances and / or required times between nodes, and road names such as national highways. It is comprised including. In addition to the above, the link data is provided with data indicating a bridge, a tunnel, a railroad crossing, a toll booth, a parking lot, and the like as a link attribute. The building data includes position coordinates (latitude / longitude) composed of at least three points of the building, types of buildings such as buildings and private houses, and display color data. Note that data indicating a toll booth, a parking lot, or the like may be set as building data. In addition, the background data is configured to include data of position coordinates (latitude / longitude) including at least three points serving as background image information such as a sea area (sea area information), a lake, a river shape, and a forest, and display color. The text data includes characters (names) such as place names and river names, and data of their coordinates (latitude / longitude).

  The input / output unit 24 functions as a control signal transmission unit, and transmits a control signal from the control unit 13 to the power switch 32. The power switch 32 is on / off controlled by the transmitted control signal. The power switch 32 connects the vehicle battery 33 and the rear camera 12 and is turned on to set the rear camera 12 to the on state.

  The input / output unit 25 is connected to the rear camera 12, supplies a control signal from the control unit 13 to the rear camera 12 to drive and control the rear camera 12, and an image related to a rear image of the vehicle photographed by the rear camera 12. The signal is supplied to the control unit 13. The input / output unit 25 functions as an image signal receiving unit.

  The operation unit 19 inputs various kinds of information to the navigation device 11 such as a starting point and a destination for route search, enlargement / reduction of a map image, scrolling, registration of a desired landmark, etc. 11 gives a desired instruction. The operation unit 19 can also be configured by a touch panel formed on the screen of the display unit 20.

  The display unit 20 displays various menu screens, a current position and map image of the vehicle, a searched movement route, and the like, and displays a rear image of the vehicle photographed by the rear camera 12. The speaker 21 outputs necessary guidance voice to the user.

  The input / output unit 26 is associated with a shift lever 34 of the vehicle, and supplies a mode signal indicating each mode corresponding to the set position of the shift lever 34 to the control unit 13. In this case, the shift lever 34 has at least a drive mode (D), a reverse mode (R), a parking mode (P), and a neutral mode (N). In addition, the mode signal concerning parking mode (P) can also be comprised so that it may acquire from operation parts other than the shift lever 34, for example, a parking brake. The input / output unit 26 functions as a mode signal receiving unit.

  A foot brake 35 of the vehicle is connected to the input / output unit 27 and supplies a foot brake operation signal from the foot brake 35 to the control unit 13. The input / output unit 27 functions as a foot brake operation signal receiving unit.

  The mode switching data storage unit 22 receives a mode signal indicating that the input / output unit 26 has selected the drive mode (D) from the shift lever 34, and then indicates a mode indicating that the parking mode (P) has been selected. When the signal is received, mode switching data indicating a mode switching state from the drive mode (D) to the parking mode (P) is stored.

  The in-vehicle camera system 10 of the present embodiment is basically configured as described above. Next, the operation of the in-vehicle camera system 10 will be described according to the flowchart shown in FIG.

  When the engine of the vehicle 36 is started (step S100) and the driver operates the foot brake 35, the input / output unit 27 of the navigation device 11 receives the foot brake operation signal from the foot brake 35 and supplies it to the control unit 13 ( Step S101, YES). When the foot brake operation signal is supplied from the input / output unit 27, the control unit 13 refers to the data stored in the mode switching data storage unit 22 (step S102). When the foot brake 35 is not operated (step S101, NO), the data of the mode transition state storage unit 22 is not referred to, and the confirmation process of the foot brake 35 is repeated until the engine is stopped (step S110, NO).

  In this case, when the previous operation is a mode switching state in which the driver operates the shift lever 34 to switch from the drive mode (D) to the parking mode (P), for example, as shown in FIG. When the driver advances the vehicle 36 (drive mode) and stops at the parking lot 37 and is in a state where the parking brake is applied (parking mode), the mode switching data storage unit 22 stores data as described later. (Step S109), mode switching data indicating the mode switching state is stored.

  First, a case where mode switching data is not stored in the mode switching data storage unit 22 will be described.

  That is, when the shift lever 34 is not switched from the drive mode (D) to the parking mode (P) in the previous operation (step S103, NO), for example, the previous operation is performed in the reverse mode. When the vehicle 36 is moved backward in (R) and then stopped in the parking mode (P), the mode switching data storage unit 22 does not store mode switching data. Therefore, the control unit 13 receives and confirms a mode signal indicating the current mode of the shift lever 34 via the input / output unit 26.

  When the received mode signal is not the reverse mode (R) (step S104, NO), the control unit 13 displays a navigation image on the display unit 20 (step S105) because the driver has not performed an operation of moving the vehicle 36 backward. ), Normal navigation processing by the navigation device 11 is started. The process (step S104, YES) when the shift lever 34 is set to the reverse mode (R) will be described later.

  In the navigation process, for example, when the driver inputs a departure point and a destination from the operation unit 19 and instructs a route search, the route search unit 17 includes the map information stored in the map information storage unit 18, the departure point, Based on the destination, the optimum travel route from the departure point to the destination is searched. The searched movement route is displayed on the display unit 20 together with the map information. Next, when the vehicle 36 is caused to travel according to the displayed movement route, the current position detection unit 14 sequentially detects the current position of the vehicle 36, or the control unit 13 presents the current position according to the angular velocity and the vehicle speed supplied from the autonomous navigation unit 16. The position is calculated, and the current position of the vehicle 36 is displayed on the display unit 20 together with the searched movement route.

  While the navigation image is displayed on the display unit 20 and the navigation process is being performed, the control unit 13 monitors a mode signal indicating the operation state of the shift lever 34 via the input / output unit 26 (step S106). When the control unit 13 determines that the driver has operated the shift lever 34 (step S106, YES), has the mode signal before and after the operation of the shift lever 34 switched from the drive mode (D) to the parking mode (P)? Judge whether or not.

  When the current operation of the shift lever 34 is not a switching operation from the drive mode (D) to the parking mode (P) (step S107, NO), the data stored in the mode switching data storage unit 22 is cleared. (Step S108). In step S108, when the mode switching data is stored in the mode switching data storage unit 22 based on the previous operation of the shift lever 34, the mode switching data is cleared. If no mode switching data is stored in the mode switching data storage unit 22, the clear process is performed, but the data is not substantially cleared. Next, the processing from step S101 is repeated (step S110, NO) until the engine of the vehicle 36 is stopped (step S110, YES).

  On the other hand, when the shift lever 34 is switched from the drive mode (D) to the parking mode (P) (step S107, YES), the control unit 13 stores the mode switching data storage unit 22 in the parking mode from the drive mode (D). Mode switching data indicating the mode switching state switched to (P) is stored (step S109). For example, as shown in FIG. 3, the parking brake is applied (parking mode) after the driver advances the vehicle 36 (drive mode) and stops at the parking lot 37. Next, the processing from step S101 is repeated (step S110, NO) until the engine of the vehicle 36 is stopped (step S110, YES).

  Next, a case where the driver operates the shift lever 34 to switch from the drive mode (D) to the parking mode (P) and the mode switching data is stored in the mode switching data storage unit 22 in step S109 will be described.

  For example, after the driver stops the vehicle 36 in a parking lot 37 such as a convenience store, shopping without stopping the engine, the driver gets on the vehicle 36 again, and the foot brake 35 is operated to switch the shift lever 34. (Step S101, YES), the control unit 13 refers to the data stored in the mode switching data storage unit 22 (Step S102). In this case, the mode switching data storage unit 22 stores mode switching data indicating that the shift lever 34 has been switched from the drive mode (D) to the parking mode (P) in the previous operation. (Step S109).

  The control unit 13 determines that the shift lever 34 has been switched from the drive mode (D) to the parking mode (P) in the previous operation (step S103, YES). It is determined whether or not the position is the parking lot 37 (step S111). That is, the control unit 13 is based on the current position of the vehicle 36 detected by the current position detection unit 14 or the autonomous navigation unit 16 and the map information including the parking lot information stored in the map information storage unit 18. It is determined whether or not the position is the parking lot 37.

  When it is determined that the current position is not the parking lot 37 (step S111, NO), the vehicle 36 is stopped at a place other than the parking lot 37, and the next operation of the driver is not necessarily reverse. Therefore, the state of the shift lever 34 is confirmed without immediately setting the rear camera 12 to the on state (step S104). When the shift lever 34 is not set to the reverse mode (R) (step S104, NO), the navigation image is displayed on the display unit 20 (step S105), and the navigation processing by the navigation device 11 is performed. The process (step S104, YES) when the shift lever 34 is set to the reverse mode (R) will be described later.

  On the other hand, when it determines with it being the parking lot 37 (step S111, YES), the control part 13 transmits a control signal to the power switch 32 via the input-output part 24, turns on the power switch 32, and is a rear camera. 12 is supplied with power from the battery 33. When the rear camera 12 is set to the on state (step S112), the rear camera 12 captures a rear image of the vehicle 36 and supplies the image signal to the control unit 13 via the input / output unit 25. The control unit 13 that has received the image signal displays the rear image on the display unit 20 (step S113).

  Therefore, the driver switches the shift lever 34 to the reverse mode (R) while checking the rear image of the vehicle 36 displayed on the display unit 20 (step S114, YES), and moves the vehicle 36 from the parking section of the parking lot 37. Retract to a predetermined position outside the compartment.

  In this case, the rear image of the vehicle 36 is displayed on the display unit 20 prior to the operation of switching the shift lever 34 to the reverse mode (R) after the driver operates the foot brake 35 of the vehicle 36. Therefore, before switching the shift lever 34 to the reverse mode (R), the driver switches the shift lever 34 to the reverse mode (R) while checking the rear image already displayed in a stable state, and switches the vehicle 36. It can be moved back quickly.

  In addition, the driver's previous driving operation is a switching operation from the drive mode (D) to the parking mode (P). Since the vehicle 36 is stopped at the parking lot 37, the driver advances the vehicle 36 forward. The parking lot 37 is stopped. Therefore, it is highly likely that the first operation during the next driving is an operation of moving the vehicle backward and exiting the predetermined section of the parking lot 37, and the rear camera before the driver switches the shift lever 34 to the reverse mode (R). Even if is set to the on state, the battery 33 of the vehicle 36 is not wasted.

  The control unit 13 indicates that the shift lever 34 has been switched to a mode other than the reverse mode (R) after the vehicle 36 has retreated from the parking section of the parking lot 37 in the reverse mode (R) and moved out of the section. When the mode signal is received (step S114, NO), a control signal is output to the power switch 32 via the input / output unit 24, the power switch 32 is turned off and the rear camera 12 is turned off (step S115). Next, the control unit 13 displays a navigation image on the display unit 20 (step S105), and starts normal navigation processing by the navigation device 11.

  It should be noted that mode switching data indicating that the shift lever 34 has been switched from the drive mode (D) to the parking mode (P) is not stored in the mode switching data storage unit 22 during the previous driving operation. When the mode (R) is selected (step S103, NO → step S104, YES), or the mode switching data is stored, but the reverse mode (R) is selected at a place other than the parking lot 37. In some cases (step S103, YES → step 111, NO → step S104, YES). In the former case, for example, the driver moves the vehicle 36 backward to stop (reverse mode), applies the parking brake (parking mode), and then operates the foot brake 35, and then switches the shift lever 34 to move the vehicle 36 backward ( (Reverse mode). In the latter case, for example, in a place other than the parking lot 37, the driver moves the vehicle 36 forward and stops (drive mode), applies the parking brake (parking mode), and then operates the foot brake 35 and then shifts. In this case, the lever 34 is switched to move the vehicle 36 backward (reverse mode).

  In this case, the control unit 13 sets the rear camera 12 to the on state and displays the rear image on the display unit 20 after receiving the mode signal indicating the reverse mode (R), similarly to the processing of steps S112 to S115. Let The driver can safely move the vehicle 36 backward while checking the displayed rear image.

  In addition, this invention is not limited to the Example mentioned above, It can change in the range which does not deviate from the summary of this invention.

  For example, on the condition that the operation during the previous driving is switching from the drive mode (D) to the parking mode (P) and the vehicle 36 is stopped at the parking lot 37, the rear camera 12 is turned on. Although set, it is not always necessary to stop at the parking lot 37. For example, when the operation during the previous driving is switching from the drive mode (D) to the parking mode (P), whether the foot brake 35 of the vehicle 36 is operated, whether the parking lot 37 or not. First, after the rear camera 12 is set to the on state and the rear image is displayed on the display unit 20 to confirm the rear, the shift lever 34 is not in the reverse mode (R) (step S114, NO). You may make it set the rear camera 12 to an OFF state.

  In addition, when the vehicle 36 is moved backward, the rear image captured by the rear camera 12 is displayed on the display unit 20. However, a side image of the vehicle 36 is captured and displayed on the display unit 20. Also good. For example, when the vehicle 36 is moved backward while turning leftward, if the left side image of the vehicle 36 is captured and displayed on the display unit 20, the vehicle 36 is moved backward while confirming the safety on the left side. Can be made. Similarly, when the vehicle 36 is moved backward while turning right, if the right side image of the vehicle 36 is photographed and displayed on the display unit 20, the vehicle 36 is moved while confirming the safety on the right side. Can be retreated. Of course, when the vehicle 36 is moved backward, the rear image and the side image of the vehicle 36 may be simultaneously displayed on the display unit 20.

  The rear camera 12, the vehicle speed sensor 31, the power switch 32, the shift lever 34, and the foot brake 35 can be connected to the navigation device 11 using a vehicle LAN.

DESCRIPTION OF SYMBOLS 10 ... Car-mounted camera system 11 ... Navigation apparatus 12 ... Rear camera 13 ... Control part 14 ... Current position detection part 15 ... Gyroscope 16 ... Autonomous navigation part 17 ... Route search unit 18 ... Map information storage unit 19 ... Operation unit 20 ... Display unit 21 ... Speaker 22 ... Mode switching data storage unit 23-27 ... Input / output unit 28 ... CPU
29 ... RAM
30 ... ROM
31 ... Vehicle speed sensor 32 ... Power switch 33 ... Battery 34 ... Shift lever 35 ... Foot brake 36 ... Vehicle 37 ... Parking lot

Claims (6)

In a vehicle-mounted camera system comprising a camera that captures an image of the rear or side of a vehicle and a display unit that displays the captured image,
A mode signal receiving unit for receiving a mode signal indicating the selected mode when the drive mode or the parking mode is selected;
A mode indicating a mode switching state from the drive mode to the parking mode when the mode signal indicating that the parking mode is selected is received after the mode signal indicating that the drive mode is selected. A mode switching data storage unit for storing switching data;
A foot brake operation signal receiving unit for receiving a foot brake operation signal of the vehicle;
When the mode switching data is stored in the mode switching data storage unit when the foot brake operation signal is received, the camera is set to an on state, and the image captured by the camera is displayed on the display unit. A control unit for performing display control;
An in-vehicle camera system comprising: A current position detector for detecting a current position of the vehicle;
A map information storage unit for storing map information including parking lot information;
When the foot brake operation signal is received, the control unit stores the mode switching data in the mode switching data storage unit, and includes the detected current position and the parking lot information. Based on the map information, when it is determined that the current position is a parking lot, the camera is set to an on state, and control is performed to display the image captured by the camera on the display unit. The in-vehicle camera system according to claim 1.   The control unit clears the mode switching data stored in the mode switching data storage unit when receiving the mode signal that is in a mode switching state other than the mode switching state from the drive mode to the parking mode. The vehicle-mounted camera system according to claim 1 or 2, wherein In an image display device that can be connected to a camera that captures an image of the rear or side of the vehicle and includes a display unit that displays the captured image.
A control signal transmitter for transmitting a control signal for setting the camera to an on state to a power switch of the camera;
An image signal receiving unit for receiving an image signal related to the image taken by the camera set in an on state;
A mode signal receiving unit for receiving a mode signal indicating the selected mode when the drive mode or the parking mode is selected;
A mode indicating a mode switching state from the drive mode to the parking mode when the mode signal indicating that the parking mode is selected is received after the mode signal indicating that the drive mode is selected. A mode switching data storage unit for storing switching data;
A foot brake operation signal receiving unit for receiving a foot brake operation signal of the vehicle;
When the mode switch data is stored in the mode switch data storage unit when the foot brake operation signal is received, the control signal is transmitted to the power switch, the image signal is received, and the camera A control unit that performs control to display the captured image on the display unit;
An image display device comprising:   A current position detection unit that detects a current position of the vehicle; and a map information storage unit that stores map information including parking lot information. When the control unit receives the foot brake operation signal, the mode When the mode switching data is stored in the switching data storage unit, and based on the detected current position and the map information including the parking lot information, it is determined that the current position is a parking lot, The image display apparatus according to claim 4, wherein the control signal is transmitted to the power switch, the image signal is received, and control is performed to display the image captured by the camera on the display unit. .   The control unit clears the mode switching data stored in the mode switching data storage unit when receiving the mode signal that is in a mode switching state other than the mode switching state from the drive mode to the parking mode. The image display device according to claim 4, wherein the image display device is a display device.

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