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Vehicle-mounted camera video output circuit

A video output and camera technology, applied in the field of vehicle cameras, can solve the problems of inability to meet miniaturization, large camera size, large PCB area, etc., and achieve the effect of reducing PCB size, low cost, and saving component cost

Pending Publication Date: 2018-07-06
SHENZHEN LONGHORN AUTOMOTIVE ELECTRONICS EQUIPCO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The cost of the entire circuit of the existing vehicle-mounted camera is high and occupies a large PCB area, and the size of the camera is large, which cannot meet the requirements of miniaturization

Method used

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  • Vehicle-mounted camera video output circuit
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Embodiment Construction

[0012] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the following exemplary embodiments and descriptions are only used to explain the present invention, but not to limit the present invention, and, in the case of no conflict, the embodiments of the present invention and the features of the embodiments can be combined with each other .

[0013] like figure 2 As shown, one embodiment of the present invention provides a video output circuit for a vehicle camera, including an image processor (ISP) integrated with an operational amplifier, the image processor having a reference voltage pin and a first output differential video signal A differential signal pin and a second differential signal pin, the first differential signal pin is connected to the anode of the first diode D1, the second differential signal pin is connected to the anode of the second diode D2, an...

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Abstract

The embodiment of the invention provides a vehicle-mounted video output circuit. The circuit comprises an image processor integrated with an operational amplifier, wherein the image processor is provided with a reference voltage pin, and a first differential signal pin and a second differential signal pin for outputting differential video signals; the first differential signal pin is connected with the positive electrode of a first diode D1, the second differential signal pin is connected with the positive electrode of a second diode D2, the negative electrodes of the first diode D1 and the second diode D2 are respectively connected with two input ends of a filter module, two output ends of the filter module are connected to a first differential video signal output end and a second differential video signal output end through a first resistor R1 and a second resistor R2; the reference voltage pin is connected with a third resistor R3 for adjusting the amplification gain of the operational amplifier, and the other end of the third resistor R3 is grounded. The differential voltage value amplification can be realized by enabling the image processor to cooperate with the correspondingsimple circuit, the video amplifier integrated chip is saved, and the cost is low.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of on-board cameras, and in particular, to a video output circuit of a on-board camera. Background technique [0002] At present, in-vehicle cameras are becoming more and more popular, and the loading rate is gradually increasing. In the future, with the development of smart cars and autonomous driving, each car will be equipped with more than one auxiliary camera. The output circuit of the analog camera has a video amplifier integrated chip, which is used to amplify the analog signal and has the function of electrical protection. figure 1 Shown is a common video output circuit. In the figure, VON_1 and VOP_1 are the positive and negative poles of the differential video signal output by the ISP (Image Signal Processor, image processor). The signal amplitude is 1Vp-p. The video amplifier integrated chip U2 After processing, the differential video signal is amplified by 2 times, that is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/14
CPCH04N5/14H04N5/148
Inventor 孙牵宇
Owner SHENZHEN LONGHORN AUTOMOTIVE ELECTRONICS EQUIPCO
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