Vehicle-mounted electronic rearview mirror circuit and vehicle-mounted electronic rearview mirror

Abstract

The application relates to the technical field of vehicle-mounted rearview mirrors, in particular to a vehicle-mounted electronic rearview mirror circuit and a vehicle-mounted electronic rearview mirror. The vehicle-mounted electronic rearview mirror circuit comprises a video acquisition module, the video acquisition module comprises video sensors arranged at multiple visual angles of a target vehicle; the output end of the video acquisition module is connected with the input end of a video conversion module, the output end of the video conversion module is connected with the signal input end of a main control module; the first driving end of the main control module is connected with the backlight input end of a driving module, the second driving end of the main control module is connected with the display input end of the driving module; the backlight driving end of the driving module is connected with the first input end of a display module, the display driving end of the driving module is connected with the second input end of the display module, and the display module comprises a plurality of display screens. The application can provide comprehensive surrounding vision for a driver, thereby eliminating the problem of frequent conversion of the driver's vision, reducing the risk of distraction, and improving the convenience and safety performance of driving.

Description

Technical Field

[0001] This application relates to the technical field of vehicle rearview mirrors, and more particularly to a vehicle electronic rearview mirror circuit and a vehicle electronic rearview mirror. Background Technology

[0002] Blind spots exist in modern driving, impacting driver safety and potentially increasing the risk of accidents. A common solution is to install multiple curved rearview mirrors to cover different angles of the vehicle's field of vision. Each mirror is designed differently in shape, size, and installation angle to achieve broader coverage. However, this solution requires drivers to frequently switch their gaze, especially when searching for the desired view among multiple mirrors. This places higher demands on driver experience and skill, particularly in complex driving environments where quick and accurate adjustments are needed, increasing driving difficulty and risk.

[0003] It can be seen that while installing multiple curved rearview mirrors alleviates blind spot problems to some extent, it still has some shortcomings. For example, when drivers frequently switch their gaze between numerous rearview mirrors, their attention becomes noticeably distracted, which not only reduces driver efficiency but may also lead to driving errors. Furthermore, each rearview mirror has a limited field of view, requiring drivers to switch between multiple mirrors to achieve full coverage, increasing the difficulty of driving, especially for inexperienced drivers, where the complexity of operation is more pronounced. Utility Model Content

[0004] To overcome the shortcomings of the prior art, this application provides a vehicle-mounted electronic rearview mirror circuit and a vehicle-mounted electronic rearview mirror, which provides the driver with a comprehensive view of the surroundings, thereby eliminating the problem of the driver frequently changing their gaze, reducing the risk of distraction, and thus improving the convenience and safety of driving.

[0005] The technical solution adopted by this application to solve its technical problem is:

[0006] In a first aspect, this application provides an in-vehicle electronic rearview mirror circuit, applied to a target vehicle, comprising: a video acquisition module, wherein the video acquisition module includes video sensors disposed on the target vehicle from multiple angles;

[0007] The output of the video acquisition module is connected to the input of the video conversion module, and the output of the video conversion module is connected to the signal input of the main control module.

[0008] The first driving terminal of the main control module is connected to the backlight input terminal of the driving module, and the second driving terminal of the main control module is connected to the display input terminal of the driving module.

[0009] The backlight driving terminal of the driving module is connected to the first input terminal of the display module, and the display driving terminal of the driving module is connected to the second input terminal of the display module. The display module includes multiple displays.

[0010] In response to the video acquisition module performing signal acquisition, the video conversion module converts the video signals acquired by each video sensor, processes them through the main control module, and transmits them to the drive module to generate drive signals. Based on the drive signals, the drive module controls each display screen in the display module to perform monitoring and display.

[0011] Optionally, it may also include: a storage module;

[0012] The input terminal of the storage module is connected to the storage interaction terminal of the main control module and is used to store the converted video signal.

[0013] Optionally, the storage interaction terminal includes a first interaction terminal, a second interaction terminal, a third interaction terminal, and a fourth interaction terminal; the storage module includes a solid-state drive, a TF card, an eMMC, and DDR4;

[0014] The solid-state drive's interactive terminal is connected to the first interactive terminal, the TF card's interactive terminal is connected to the second interactive terminal, the eMMC's interactive terminal is connected to the third interactive terminal, and the DDR4's interactive terminal is connected to the fourth interactive terminal.

[0015] Optionally, it may also include: a power module;

[0016] The input terminal of the power module is connected to an external 24V power supply, and the output terminal of the power module is connected to the power supply terminal of the main control module.

[0017] Optionally, a vehicle communication module may also be included;

[0018] The first end of the vehicle communication module is connected to the communication end of the main control module, and the second end of the vehicle communication module is connected to the CAN bus of the target vehicle.

[0019] Optionally, the vehicle communication module includes an MCU;

[0020] The first terminal of the MCU is connected to the communication terminal of the main control module, and the second terminal of the MCU is connected to the CAN bus of the target vehicle.

[0021] Optionally, the main control module is a CPU control unit;

[0022] The output of the video conversion module is connected to the signal input of the CPU control unit.

[0023] The first driving terminal of the CPU control unit is connected to the backlight input terminal of the driving module, and the second driving terminal of the CPU control unit is connected to the display input terminal of the driving module.

[0024] Optionally, the driving module includes a backlight driving unit and a display driving unit;

[0025] The input terminal of the backlight driving unit is connected to the first driving terminal of the CPU control unit, and the output terminal of the backlight driving unit is connected to the first input terminal of the display module.

[0026] The input terminal of the display driver unit is connected to the second driver terminal of the CPU control unit, and the output terminal of the display driver unit is connected to the second input terminal of the display module.

[0027] Optionally, the target vehicle multi-view includes the left crescent area, left blind spot, right crescent area, and right blind spot of the target vehicle; the display module includes a first display screen, a second display screen, a third display screen, and a fourth display screen;

[0028] The first display screen is used to receive the drive signal corresponding to the left crescent region, the second display screen is used to receive the drive signal corresponding to the left blind zone, the third display screen is used to receive the drive signal corresponding to the right crescent region, and the fourth display screen is used to receive the drive signal corresponding to the right blind zone.

[0029] Secondly, this application provides a vehicle-mounted electronic rearview mirror equipped with the aforementioned vehicle-mounted electronic rearview mirror circuit.

[0030] The beneficial effects of this application are as follows: The video conversion module converts the video signals collected by various video sensors into a format suitable for transmission. The main control module processes the data transmitted from the video conversion module to ensure data accuracy and real-time performance. The backlight driver and display driver in the drive module control the backlight and display content of the display screen, respectively, which is achieved by the drive signals generated by the main control module. Finally, multiple displays in the display module monitor and display according to the drive signals, providing the driver with a comprehensive view of the surroundings. This design not only eliminates the problem of drivers frequently changing their gaze and reduces the risk of distraction, but also improves driving convenience and safety by displaying images from multiple perspectives in real time. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the module connection of the vehicle electronic rearview mirror circuit provided in the embodiments of this application;

[0032] Figure 2This is a schematic diagram of the unit connection of the vehicle electronic rearview mirror circuit provided in the embodiment of this application. Detailed Implementation

[0033] The present application will be further described below with reference to the accompanying drawings and embodiments.

[0034] The following will clearly and completely describe the concept, specific structure, and resulting technical effects of this application in conjunction with embodiments and accompanying drawings, so as to fully understand the purpose, features, and effects of this application. Obviously, the described embodiments are only a part of the embodiments of this application, not all of them. Other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are all within the scope of protection of this application. Furthermore, all connections / linkages involved in the patent do not simply refer to direct contact between components, but rather to the ability to form a better connection structure by adding or reducing connecting accessories according to specific implementation conditions. The various technical features in this application can be combined interactively without contradicting each other.

[0035] Reference Figure 1 , Figure 1 This is a schematic diagram of the module connection of the vehicle electronic rearview mirror circuit provided in the embodiments of this application. The diagram shows the design of several key modules involved in the vehicle electronic rearview mirror circuit provided in this application. The following is a detailed description of each key module:

[0036] The video acquisition module includes video sensors installed on the target vehicle from multiple perspectives.

[0037] Specifically, the video acquisition module consists of multiple video sensors positioned at different angles of the vehicle (such as the left, right, and reversing directions), with each sensor corresponding to a specific monitoring area. These sensors acquire image information from different angles around the vehicle in real time, convert the light signals into electrical signals, and output them to provide the raw data foundation for subsequent signal processing and display.

[0038] More specifically, the target vehicle's multi-view perspective includes the target vehicle's left crescent area, left blind spot, right crescent area, and right blind spot. Specifically, it includes the left crescent area, left blind spot, right crescent area, and right blind spot. These areas are typically blind spots that are difficult to cover with traditional optical rearview mirrors. For example, the left crescent area refers to the arc-shaped blind spot at the edge of the left rearview mirror, and the left blind spot is the area directly obscured by the left side of the vehicle body. The same applies to the right crescent area and right blind spot.

[0039] The output of the video acquisition module is connected to the input of the video conversion module, and the output of the video conversion module is connected to the signal input of the main control module.

[0040] The video conversion module is a signal processing unit that connects the video acquisition module and the main control module. Its main function is to adjust or preprocess the format of the original video signal to make it conform to the input requirements of the main control module. The main control module is the core processing unit of the system, responsible for analyzing, synthesizing, and optimizing the converted signal, providing a foundation for driving the display module.

[0041] Specifically, after the video acquisition module acquires raw video signals from multiple perspectives (such as image electrical signals from areas like the left blind zone and right crescent zone), it first transmits them to the input of the video conversion module through its output. The video conversion module performs adaptation processing on these raw signals (for example, converting MIP I, LVDS, and other format signals output from different sensors into RGB or YUV formats supported by the main control module, or adjusting the signal level and timing to match the interface requirements of the main control module). The standardized signals after conversion are then transmitted to the signal input of the main control module through the output of the video conversion module. After receiving these signals, the main control module further performs image stitching, noise reduction, scaling, and other processing to finally generate the control signals required to drive the display module.

[0042] More specifically, the video conversion module solves the problem of mismatch between the output signal formats of different video sensors and the input requirements of the main control module, avoiding image delay, distortion, or system errors caused by poor signal compatibility. At the same time, separating signal conversion from main control processing reduces the burden on the main control module, allowing it to focus more on core image algorithm processing (such as blind spot recognition and multi-image synthesis), thereby improving the response speed and display reliability of the entire electronic rearview mirror system.

[0043] Furthermore, the first driving terminal of the main control module is connected to the backlight input terminal of the driving module, and the second driving terminal of the main control module is connected to the display input terminal of the driving module.

[0044] The driver module is an intermediate component connecting the main control module and the display module. Its main function is to convert the control commands from the main control module into specific signals that drive the display module. The backlight input terminal is the interface for the driver module to receive backlight control signals (used to adjust basic backlight parameters such as screen brightness and on / off status); the display input terminal is the interface for receiving display content control signals (used to transmit image data, display modes, and other commands directly related to the screen content).

[0045] Specifically, the main control module connects to the backlight input terminal of the drive module via the first drive terminal, sending backlight control commands (such as signals to automatically adjust brightness based on ambient light); simultaneously, it connects to the display input terminal of the drive module via the second drive terminal, transmitting control commands for the displayed content (such as parameters for image scaling, split-screen display, etc.). After receiving these two types of signals, the drive module processes them into backlight drive signals and display drive signals respectively, ultimately driving the display module to complete the image presentation.

[0046] Reference Figure 2 , Figure 2 This is a schematic diagram of the unit connection of the vehicle electronic rearview mirror circuit provided in the embodiment of this application. As can be seen from the figure, the driving module includes a backlight driving unit and a display driving unit.

[0047] The input terminal of the backlight driving unit is connected to the first driving terminal of the CPU control unit, and the output terminal of the backlight driving unit is connected to the first input terminal of the display module.

[0048] The input terminal of the display driver unit is connected to the second driver terminal of the CPU control unit, and the output terminal of the display driver unit is connected to the second input terminal of the display module.

[0049] Among them, the backlight driving unit is a sub-unit in the driving module specifically used to control parameters such as the backlight brightness and on / off state of the display module; the display driving unit is a sub-unit in the driving module responsible for processing and transmitting the display content signals.

[0050] Specifically, the driving module consists of two parts: a backlight driving unit and a display driving unit. The input terminal of the backlight driving unit is connected to the first driving terminal of the CPU control unit, receiving backlight control signals (such as brightness adjustment commands) from the CPU. After processing, these signals are transmitted to the first input terminal of the display module through the output terminal to control the backlight state of the display module. The input terminal of the display driving unit is connected to the second driving terminal of the CPU control unit, receiving display content signals (such as image data and resolution adjustment commands) from the CPU. After processing, these signals are transmitted to the second input terminal of the display module through the output terminal to control the image display content of the display module.

[0051] Furthermore, the backlight driving terminal of the driving module is connected to the first input terminal of the display module, and the display driving terminal of the driving module is connected to the second input terminal of the display module. The display module includes multiple displays.

[0052] The display module is a functional component in the system that presents the monitoring screen. It consists of multiple independent displays, each corresponding to a specific area such as the left blind zone and the right crescent zone.

[0053] Specifically, the driving module is connected to the first input terminal of the display module via the backlight driving terminal, transmitting backlight control signals (such as instructions to adjust brightness according to ambient light) to the display module; simultaneously, it is connected to the second input terminal of the display module via the display driving terminal, transmitting display content control signals (such as parameters for image scaling and split-screen display). After receiving these two types of signals, the multiple displays within the display module adjust their own backlight brightness and display the real-time image of the corresponding area (e.g., the left blind zone display receives the backlight signal to brighten, and simultaneously receives the display signal to display the left blind zone image).

[0054] More specifically, the backlight drive signal focuses on adjusting the basic brightness parameters of the display screen (such as brightening under strong light and dimming at night) to ensure image visibility; the display drive signal independently controls the presentation of image content (such as split-screen switching and area close-ups) to ensure image clarity and stability. Multiple displays can accurately present the monitoring image of their respective areas by independently receiving the two types of signals, allowing the driver to have a comprehensive understanding of the vehicle's surroundings without frequently switching their gaze.

[0055] More specifically, the display module includes a first display screen, a second display screen, a third display screen, and a fourth display screen;

[0056] The first display screen is used to receive the drive signal corresponding to the left crescent region, the second display screen is used to receive the drive signal corresponding to the left blind zone, the third display screen is used to receive the drive signal corresponding to the right crescent region, and the fourth display screen is used to receive the drive signal corresponding to the right blind zone.

[0057] Specifically, the video signals of the four key monitoring areas—left crescent zone, left blind zone, right crescent zone, and right blind zone—are processed by the main control module to generate corresponding drive signals, which are then transmitted to the first to fourth display screens respectively: the first display screen receives the drive signal for the left crescent zone and displays the image of that area; the second display screen receives the drive signal for the left blind zone and displays its image; and the third and fourth display screens similarly correspond to the right crescent zone and the right blind zone.

[0058] By displaying real-time images of different blind spots on separate screens, the overlapping or frequent switching of multiple images on the same screen is avoided. Drivers can simultaneously and intuitively observe the dynamics of the left and right crescent-shaped areas and blind spots without having to shift their gaze between different images, which greatly improves the efficiency of perception of the vehicle's surroundings. At the same time, the fixed correspondence between areas and screens reduces information confusion and lowers the risk of operational errors caused by misjudging the position of the image, thereby enhancing driving safety.

[0059] Furthermore, it also includes: a storage module;

[0060] The input terminal of the storage module is connected to the storage interaction terminal of the main control module and is used to store the converted video signal.

[0061] The storage module is a functional component in the vehicle electronic rearview mirror used to save video data; the storage interaction terminal of the main control module is the interface for data transmission between the main control module and the storage module, responsible for transmitting the information that needs to be stored to the storage module.

[0062] Specifically, the input end of the storage module is connected to the storage interaction end of the main control module. When the main control module completes the processing of the converted video signal (such as noise reduction, optimization, etc.), it will transmit these signals to the storage module through the storage interaction end, and the storage module will store them for long-term or temporary storage.

[0063] More specifically, the storage interaction terminal includes a first interaction terminal, a second interaction terminal, a third interaction terminal, and a fourth interaction terminal; the storage module includes a solid-state drive, a TF card, an eMMC, and DDR4;

[0064] The solid-state drive's interactive terminal is connected to the first interactive terminal, the TF card's interactive terminal is connected to the second interactive terminal, the eMMC's interactive terminal is connected to the third interactive terminal, and the DDR4's interactive terminal is connected to the fourth interactive terminal.

[0065] Among them, the storage interaction terminal is the interface for data transmission between the main control module and the storage module. It is further subdivided into the first interaction terminal, the second interaction terminal, the third interaction terminal and the fourth interaction terminal, which correspond to the connection channels of different types of storage media.

[0066] The storage module includes a solid-state drive (SSD), a high-speed, high-capacity flash-based storage device suitable for long-term data storage; a TF card (TransFlash Card), a small removable storage card for flexible storage expansion; an EMMC (Embedded Multimedia Card), an embedded multimedia storage card that integrates storage chips and a controller, serving as the device's built-in fixed storage; and DDR4 (Double Data Rate Synchronous Dynamic Random Access Memory), a volatile storage medium used for temporary storage of high-speed read / write data.

[0067] Specifically, the solid-state drive's interaction terminal is connected to the first interaction terminal of the main control module, undertaking the long-term storage task of large-capacity video data; the TF card's interaction terminal is connected to the second interaction terminal, supporting external expansion of storage capacity and data export; the eMMC's interaction terminal is connected to the third interaction terminal, working stably as the device's built-in fixed storage medium; and the DDR4's interaction terminal is connected to the fourth interaction terminal, responsible for temporarily storing real-time processed video data (such as monitoring screens that need to be quickly accessed).

[0068] More specifically, this combination of multiple storage media types and independent interactive terminals effectively meets the storage needs of different scenarios: the large capacity and high reliability of solid-state drives ensure the long-term retention of historical videos; the portability of TF cards facilitates data backup and external use; the embedded characteristics of eMMC ensure the stability of the built-in storage; and the high-speed read and write capabilities of DDR4 support rapid data retrieval during real-time video processing. Each storage medium is connected through independent interfaces, avoiding mutual interference during data transmission, improving the overall efficiency and flexibility of the storage system. This ensures the secure preservation of critical data while meeting the speed requirements of real-time processing, thereby enhancing the reliability and adaptability of the vehicle-mounted electronic rearview mirror system in data management and use.

[0069] Furthermore, it also includes: a power module;

[0070] The input terminal of the power module is connected to an external 24V power supply, and the output terminal of the power module is connected to the power supply terminal of the main control module.

[0071] The power module is a power conversion component that provides a stable operating voltage for the system. Specifically, the input terminal of the power module is connected to an external 24V power supply to receive the external 24V voltage; its output terminal is connected to the power supply terminal of the main control module, converting the 24V voltage into an adaptive voltage (such as 3.3V, 5V, etc.) that meets the operating requirements of the main control module and transmitting it to the main control module to ensure that the main control module receives stable power.

[0072] Furthermore, it also includes a vehicle communication module;

[0073] The first end of the vehicle communication module is connected to the communication end of the main control module, and the second end of the vehicle communication module is connected to the CAN bus of the target vehicle.

[0074] Among them, the vehicle communication module is a communication component that enables data interaction between the system and other electronic units in the vehicle. In this embodiment, the MCU is used as its carrier. The CAN bus is a standardized serial communication bus between various electronic control units in the vehicle (including but not limited to the engine control unit, braking system, etc.) and is used to transmit vehicle status information in real time, including but not limited to vehicle speed, steering signals, etc.

[0075] That is, the vehicle communication module includes an MCU;

[0076] The first terminal of the MCU is connected to the communication terminal of the main control module, and the second terminal of the MCU is connected to the CAN bus of the target vehicle.

[0077] Specifically, the MCU in the vehicle communication module has its first end connected to the communication end of the main control module to receive communication commands or data to be transmitted sent by the main control module; its second end is connected to the CAN bus of the target vehicle, converts the commands or data into the protocol format supported by the CAN bus and sends them to the bus, and at the same time receives vehicle status data on the bus and converts it into a format compatible with the main control module and sends it back.

[0078] More specifically, by using the MCU as the core processing unit of the vehicle communication module, protocol conversion and data adaptation between the main control module and the CAN bus are achieved. The MCU can make real-time adjustments based on the differences in communication protocols between the two (such as the internal data format of the main control module and the standard protocol of the CAN bus), ensuring the accuracy and compatibility of data transmission. Its integrated chip design also improves the compactness and anti-interference capability of the communication module, reduces the complexity of external circuits, and lowers signal transmission losses and error rates. This enables the in-vehicle electronic rearview mirror system to interact more stably with other electronic units in the vehicle (such as the instrument panel and braking system), for example, timely acquisition of turn signals to trigger blind spot display, or synchronous alarm information to the whole vehicle system, thereby enhancing the reliability and synergy of driver assistance functions.

[0079] Furthermore, the main control module is a CPU control unit;

[0080] The output of the video conversion module is connected to the signal input of the CPU control unit.

[0081] The first driving terminal of the CPU control unit is connected to the backlight input terminal of the driving module, and the second driving terminal of the CPU control unit is connected to the display input terminal of the driving module.

[0082] Among them, the CPU control unit (Central Processing Unit Control Unit) is the core control component of the electronic system. It is responsible for coordinating the execution of instructions and data transmission between various modules, and realizing the overall function of the system through logical operations and signal scheduling.

[0083] Specifically, the video signal processed by the video conversion module is transmitted to the signal input terminal of the CPU control unit through the output terminal, where the CPU control unit performs further analysis, processing, or storage. At the same time, the CPU control unit sends control signals (such as instructions to adjust the backlight brightness) to the backlight input terminal of the drive module through the first drive terminal, and sends display content control signals (such as image data and display mode switching instructions) to the display input terminal of the drive module through the second drive terminal.

[0084] More specifically, the CPU control unit, as the main control module, integrates video signal input and display driver control, forming a complete link from signal reception and processing to output, ensuring the synergy between video processing and display operations. By independently controlling the backlight and display input through the first and second driver terminals respectively, more precise adjustment of display parameters can be achieved. For example, the backlight brightness can be dynamically adjusted according to the ambient light, while maintaining the clarity of the displayed content, avoiding control interference caused by signal mixing, and improving the stability of the display effect and user experience. In addition, the centralized scheduling capability of the CPU control unit can also optimize system resource allocation, improve the response speed of video processing and display driver, and ensure the smoothness and reliability of real-time image output in scenarios such as vehicle electronic rearview mirrors.

[0085] Secondly, this application provides a vehicle-mounted electronic rearview mirror equipped with the aforementioned vehicle-mounted electronic rearview mirror circuit.

[0086] The above is a detailed description of the preferred embodiments of this application. However, the invention of this application is not limited to the embodiments described. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of this application. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A vehicle-mounted electronic rearview mirror circuit, characterized in that, Applied to a target vehicle, the system includes: a video acquisition module, wherein the video acquisition module includes video sensors disposed on the target vehicle from multiple perspectives; The output of the video acquisition module is connected to the input of the video conversion module, and the output of the video conversion module is connected to the signal input of the main control module. The first driving terminal of the main control module is connected to the backlight input terminal of the driving module, and the second driving terminal of the main control module is connected to the display input terminal of the driving module. The backlight driving terminal of the driving module is connected to the first input terminal of the display module, and the display driving terminal of the driving module is connected to the second input terminal of the display module. The display module includes multiple displays. In response to the video acquisition module performing signal acquisition, the video conversion module converts the video signals acquired by each video sensor, processes them through the main control module, and transmits them to the drive module to generate drive signals. Based on the drive signals, the drive module controls each display screen in the display module to perform monitoring and display.

2. The vehicle-mounted electronic rearview mirror circuit according to claim 1, characterized in that, Also includes: Storage module; The input terminal of the storage module is connected to the storage interaction terminal of the main control module and is used to store the converted video signal.

3. The vehicle-mounted electronic rearview mirror circuit according to claim 2, characterized in that, The storage interaction terminal includes a first interaction terminal, a second interaction terminal, a third interaction terminal, and a fourth interaction terminal; the storage module includes a solid-state drive, a TF card, an eMMC, and DDR4; The solid-state drive's interactive terminal is connected to the first interactive terminal, the TF card's interactive terminal is connected to the second interactive terminal, the eMMC's interactive terminal is connected to the third interactive terminal, and the DDR4's interactive terminal is connected to the fourth interactive terminal.

4. The vehicle-mounted electronic rearview mirror circuit according to claim 1, characterized in that, Also includes: Power module; The input terminal of the power module is connected to an external 24V power supply, and the output terminal of the power module is connected to the power supply terminal of the main control module.

5. The vehicle-mounted electronic rearview mirror circuit according to claim 1, characterized in that, It also includes a vehicle communication module; The first end of the vehicle communication module is connected to the communication end of the main control module, and the second end of the vehicle communication module is connected to the CAN bus of the target vehicle.

6. The vehicle-mounted electronic rearview mirror circuit according to claim 5, characterized in that, The vehicle communication module includes an MCU; The first terminal of the MCU is connected to the communication terminal of the main control module, and the second terminal of the MCU is connected to the CAN bus of the target vehicle.

7. The vehicle-mounted electronic rearview mirror circuit according to claim 1, characterized in that, The main control module is a CPU control unit; The output of the video conversion module is connected to the signal input of the CPU control unit. The first driving terminal of the CPU control unit is connected to the backlight input terminal of the driving module, and the second driving terminal of the CPU control unit is connected to the display input terminal of the driving module.

8. The vehicle-mounted electronic rearview mirror circuit according to claim 7, characterized in that, The driving module includes a backlight driving unit and a display driving unit; The input terminal of the backlight driving unit is connected to the first driving terminal of the CPU control unit, and the output terminal of the backlight driving unit is connected to the first input terminal of the display module. The input terminal of the display driver unit is connected to the second driver terminal of the CPU control unit, and the output terminal of the display driver unit is connected to the second input terminal of the display module.

9. The vehicle-mounted electronic rearview mirror circuit according to claim 1, characterized in that, The target vehicle's multi-view perspective includes the target vehicle's left crescent area, left blind spot, right crescent area, and right blind spot; the display module includes a first display screen, a second display screen, a third display screen, and a fourth display screen; The first display screen is used to receive the drive signal corresponding to the left crescent region, the second display screen is used to receive the drive signal corresponding to the left blind zone, the third display screen is used to receive the drive signal corresponding to the right crescent region, and the fourth display screen is used to receive the drive signal corresponding to the right blind zone.

10. A vehicle-mounted electronic rearview mirror, characterized in that, It is equipped with the vehicle electronic rearview mirror circuit as described in any one of claims 1-9.

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