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Design of Video Monitor for Trapping System

Author: YangMin
Tutor: LiuZuoChun
School: Wuhan University of Technology
Course: Communication and Information System
Keywords: trapping printing video monitor DSP image processing
CLC: TP277
Type: Master's thesis
Year: 2006
Downloads: 92
Quote: 0
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Abstract


Folllowing with the rapid development of modern industry, science and technology tremendous progress has been made in the printing industry. Trapping prining is increasingly used in the printing industry. The accuracy of trapping printing should increasingly be high in order to meet the requirement of the publication, so it is necessary to monitor the trapping printing system. At present video monitor system of trapping printing on the market is system which is based on PC and video cards in the collection. The system is not only expensive but also more complicated and it is not very steady. In order to avoid these shortages, a new monitor system which is based on the DSP+CPLD is offered. It is becoming more and more popular with its good detection accuracy and real-time processing and easy operation.According to a certain trapping monitor system, three video format are introduced. System hardware is afforded and system software is analyzed. The video monitor of trapping system can be divided into three main modules. First module is the signal conversion module. Video signal conversion chip SAA7111 is introduced and control and configuration of this chip is described. Hardware interface between this chip and CPLD then be showed. How to store the high speed video signal is also showed. At last the configuration of the CPLD is given.The second module of trapping monitor system is the image processing module. In order to meet the need of the system the expanding circuit of the DSP is affored, The third module is the display module. This module includes two main chips, one is the keyboard control chip and another is the LCD driver chip. The detailed circuit is analyzed. In the end of this paper foreground is showed of the video monitor system of trapping printing.

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CLC: > Industrial Technology > Automation technology,computer technology > Automation technology and equipment > Automation systems > Monitoring, alarm,fault diagnosis system
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