A high-definition camera with automatic focus based on cpld and mcu

A high-definition camera and auto-focus technology, applied in image communication, color TV parts, TV system parts, etc., can solve the problem of high cost and achieve the effects of small delay, strong parallel data processing capability, and high sensitivity
CN103561203BActive Publication Date: 2016-06-22武汉微创光电股份有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
武汉微创光电股份有限公司
Publication Date
2016-06-22

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Abstract

The present invention is applicable to the field of camera technology, and provides an autofocus high-definition camera based on CPLD and MCU, including a video processing chip capable of outputting standard digital video signals and an electric lens drive assembly, and the camera also includes CPLD and MCU, and the CPLD Perform brightness extraction and focus evaluation function calculation on the standard digital video signal output by the video processing chip, and output the focus evaluation function value, and the MCU performs hill-climbing search algorithm calculation according to the focus function evaluation value to output the motor control signal. The lens driving assembly controls the focus motor to complete automatic focusing according to the motor control signal. The present invention utilizes the respective characteristics of CPLD and MCU, effectively exerts the advantages of the device itself for task allocation and resource integration, and can realize a stable, reliable, high-sensitivity, and low-delay automatic focusing function. Compared with the existing automatic focusing technology solutions, Material costs can be significantly reduced.
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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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