A high-disturbance-rejection single-ended camera signal processing circuit

Abstract

The high-interference-resistance single-ended camera signal processing circuit is characterized in that one end of a resistor R1 is connected with an output signal positive electrode of a camera, oneend of a capacitor C2 and one end of a resistor R3, the other end of the resistor R1 is connected with an output signal negative electrode of the camera, one end of a capacitor C1 and one end of a resistor R2, and the other end of the capacitor C1 is grounded; The other end of the resistor R2 is connected with the other end of the capacitor C2 and one end of the resistor R5; the other end of the resistor R5 is connected with one end of a resistor R6 and one end of a capacitor C4; The other end of the resistor R3 is connected with one end of the resistor R4 and one end of the capacitor C3, theother end of the resistor R4 and the other end of the resistor R6 are connected and grounded, and the other end of the capacitor C3 and the other end of the capacitor C4 are connected with the positive electrode and the negative electrode of the video decoding chip respectively. Common-mode interference and automobile body electromagnetic interference existing in the negative end of the camera canbe effectively restrained, cost is low, parameter adjustment is easy and convenient, reliability is high, and the method is suitable for automobile electronic products.

Description

technical field [0001] The invention relates to the electrical field, in particular to the anti-jamming technology of a camera, in particular to a single-ended camera signal processing circuit with high noise immunity. Background technique [0002] In the prior art, more and more cameras are used in automobiles, but the wiring harness network on automobiles is complex and the electromagnetic environment is harsh. The camera signal is very easily affected by the wiring harness arrangement and electromagnetic interference, and water ripples or ripples often appear on the screen. Jitter phenomenon. Therefore, an input signal processing circuit with strong anti-interference is required to ensure that the image is displayed normally. [0003] At present, the commonly used camera input network circuits are as follows: [0004] Single-ended camera input network circuit. Although the circuit of this solution is simple, its anti-interference is poor, especially when there is com...

AI Technical Summary

Problems solved by technology

with the program ,plan and programs Compared with the dedicated integrated processing chip, the filtering and anti-interference performance has been improved, but its cost is also higher

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