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Automatic focusing high-definition camera based on CPLD and MCU

A high-definition camera and auto-focusing technology, used in image communication, color TV components, TV system components, etc., can solve the problem of high cost, and achieve the effect of small delay, high sensitivity, and low delay characteristics.

Active Publication Date: 2014-02-05
武汉微创光电股份有限公司
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  • Abstract
  • Description
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Problems solved by technology

[0005] In view of the above problems, the object of the present invention is to provide a kind of auto-focus high-definition video camera based on CPLD and MCU, aiming to solve the technical problem that the cost of the existing auto-focus scheme is realized by FPGA

Method used

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  • Automatic focusing high-definition camera based on CPLD and MCU
  • Automatic focusing high-definition camera based on CPLD and MCU
  • Automatic focusing high-definition camera based on CPLD and MCU

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Embodiment Construction

[0014] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0015] In order to illustrate the technical solutions of the present invention, specific examples are used below to illustrate.

[0016] figure 1 The structure of the autofocus high-definition camera based on CPLD and MCU provided by the embodiment of the present invention is shown, and only the parts related to the embodiment of the present invention are shown for convenience of description.

[0017] The autofocus high-definition camera based on CPLD and MCU provided in this embodiment includes a video processing chip 1 that can output standard digital video signals and a motorized lens drive ass...

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Abstract

The invention belongs to the technical field of cameras, and provides an automatic focusing high-definition camera based on a CPLD and a MCU. The camera comprises a video processing chip capable of outputting standard digital video signals and an electric lens drive assembly. The camera further comprises the CPLD and the MCU, wherein the CPLD carries out brightness extraction and focusing evaluation function calculation on the standard digital video signals output by the video processing chip and outputs a focusing evaluation function value; the MCU calculates in a hill-climbing search method according to the focusing evaluation function value and outputs a motor control signal. The electric lens drive assembly controls a focusing motor to complete automatic focusing according to the motor control signal. By means of characteristics of the CPLD and the MCU, advantages of components are effectively made use of to carry out task allocation and resource integration, the automatic focusing function which is stable, reliable, high in sensitivity and low in time delay characteristic is achieved, and compared with an existing automatic focusing technique, the camera can obviously reduce material cost.

Description

technical field [0001] The invention belongs to the technical field of monitoring cameras, in particular to a high-definition camera based on CPLD and MCU. The high-definition camera can realize fast auto-focus function. Background technique [0002] At the 2010 Shenzhen Security Expo, many security equipment manufacturers have launched high-definition video surveillance cameras, thus officially opening the era of high-definition video surveillance. From "visible" to "clear", high-definition video surveillance has quickly gained market recognition and favor with the help of digital and network technologies. According to statistics, the market share of high-definition surveillance equipment has reached 56%, surpassing the traditional analog camera market Share, high-definition cameras are being more and more used in security monitoring fields such as airports, roads, transportation, ports, border inspection ports, and safe cities. [0003] Generally speaking, the types of l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/225H04N5/232
Inventor 李君桥
Owner 武汉微创光电股份有限公司
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