Device for automobile rearview analog video detection and using method thereof
A technology of analog video and rear view, applied in the direction of TV, CCTV system, electrical components, etc., to achieve the effect of reducing wiring cost, shielding interference, and simplifying circuit layout
Inactive Publication Date: 2020-02-21
ALLWINNER TECH CO LTD
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- Description
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- Application Information
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Problems solved by technology
Existing solutions cannot directly complete the detection through the video signal of the coaxial line, but also need to introduce the power supply of the reversing light as the detection condition, and then complete the function of displaying the image of the reversing rearview camera
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[0023] The concept, specific structure and technical effects of the present application will be clearly and completely described below in conjunction with the embodiments and drawings, so as to fully understand the purpose, scheme and effect of the present application. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.
[0024] It should be noted that, unless otherwise specified, when a feature is called "fixed" or "connected" to another feature, it can be directly fixed and connected to another feature, or indirectly fixed and connected to another feature. on a feature. In addition, descriptions such as up, down, left, and right used in the application are only relative to the mutual positional relationship of the components of the application in the drawings. As used in this application and the appended claims, the singular forms "a", "the", and "the" are intend...
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The invention discloses a device for automobile rearview analog video detection. The analog camera transmits stable high-low level signals to the main control system through the isolation unit, the first signal control unit, the level stabilizing unit and the second signal control unit in sequence. The isolation unit comprises a first capacitor and a first resistor, one end of the first capacitoris coupled with the analog camera, the other end of the first capacitor is connected with the first resistor, and the other end of the first resistor is connected with the first signal control unit; the first signal control unit comprises a second resistor, a third resistor, a fourth resistor and a first triode, wherein a base, a collector and an emitter of the first triode are respectively coupled to the isolation unit, the power supply and the ground in sequence; the level stabilizing unit comprises a first diode, a second capacitor and a fifth resistor; the second signal control unit comprises a sixth resistor, a seventh resistor and a second triode.
Description
technical field [0001] The invention relates to the technical field of automobiles, in particular to a device for detecting rear view analog video of automobiles and a method for using the same. Background technique [0002] The rear view system of the car transmits the road environment information behind the car to the device screen of the car through the camera installed on the rear of the vehicle, so as to reflect the current road conditions behind the vehicle to the driver in real time. In order to provide drivers with higher-quality video signals, analog cameras have been widely used in automotive products such as automotive electronic rearview mirrors and automotive central control. A very important function of these products is to automatically detect the signal of reversing and display the picture of the rearview analog camera on the device screen when the car is reversing. [0003] A kind of existing technical scheme is to utilize this feature that the reversing li...
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IPC IPC(8): H04N17/00H04N7/18
CPCH04N7/18H04N17/00
Inventor 卢博吴朋罗阳
Owner ALLWINNER TECH CO LTD