Multi-mode compatible color high-definition ccd front-end video acquisition module and its implementation method

A video capture, multi-mode technology, applied in color TV, color TV parts, TV and other directions, can solve the blank and other problems, achieve the effect of low power consumption, high sensitivity, and large instantaneous driving ability

Inactive Publication Date: 2017-10-24
NANJING UNIV OF SCI & TECH
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Problems solved by technology

At present, the research on the video acquisition technology of these three high-speed high-definition CCD image sensors is almost blank

Method used

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  • Multi-mode compatible color high-definition ccd front-end video acquisition module and its implementation method
  • Multi-mode compatible color high-definition ccd front-end video acquisition module and its implementation method
  • Multi-mode compatible color high-definition ccd front-end video acquisition module and its implementation method

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specific Embodiment approach

[0020] The present invention is implemented through the following modules: detector control module, power-on sequence control module, A / D control module, detector hardware driver module, power supply module, A / D hardware driver module, CCD image sensor, A / D conversion module, wherein the hardware circuit includes five parts: detector hardware driver module, power supply module, A / D hardware driver module, CCD image sensor, A / D conversion module, detector hardware driver module and CCD image sensor and The power supply module is connected, the A / D hardware driver module is respectively connected with the power supply module and the A / D conversion module, the CCD image sensor is respectively connected with the power supply module and the A / D conversion module, and the power supply module is connected with the A / D conversion module. The specific implementation of the five parts is as follows:

[0021] (1) Detector hardware drive module: including 3 vertical drive chips CXD3400 a...

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Abstract

The invention discloses a multi-mode compatible color high-definition CCD front-end video acquisition module and its implementation method: it includes a detector control module, a power-on sequence control module, an A / D control module, a detector hardware drive module, a power supply module, an A / D The D hardware driver module, CCD image sensor and A / D conversion module finally realize the image acquisition of high-definition and high-speed CCD image sensor, and output four channels of 12-bit digital video signals, so that subsequent developers can perform digital video processing on them. The advantages of the present invention are: CCD image sensors with three pixel levels of 2 million, 4 million and 8 million are compatible; internal synchronization and external synchronization modes are optional; the selected CCD image sensor has high sensitivity, fast frame frequency and low noise; it can realize Automatic exposure and automatic gain functions; the whole module has high stability, low noise, low power consumption; small circuit board size and low board manufacturing cost.

Description

technical field [0001] The invention belongs to visible light imaging technology, in particular to multi-mode compatible color high-definition CCD front-end video acquisition technology and its realization method. Background technique [0002] With the emergence and development of CCD and CMOS technology, the camera video acquisition technology has made great progress. From black and white to color, from ordinary bullet cameras to integrated cameras, technical indicators such as wide dynamic range, low illumination, resolution, and signal-to-noise ratio have been rapidly improved. Since 2009, the development of video surveillance from standard-definition surveillance to high-definition surveillance has accelerated. The resolution of video surveillance images has developed from 4CIF or D1 resolution in the standard definition era, about 440,000 pixels, with a definition of 540 TV lines, to 1080i or 720p in the era of high-definition surveillance, with more than one million p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N7/18H04N5/372
Inventor 隋修宝王晨陈钱顾国华高航孙镱诚于雪莲
Owner NANJING UNIV OF SCI & TECH
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