The Research And Implementation Of S-Video/CVBS Interface, Image-Processing And Driving Circuits For Title Screen Plasma Display Panel

Since 1990s, more and more attentions have being put on Flat Panel Display (FPD). Nowadays, FPD can easily be found in lots of products. Liquid Crystal Display (LCD) is widely employed in laptop computers, PDAs and mobile phones because of its small volume, low power consumption and high-quality display effect. Meanwhile, in the field of large screen display, Plasma Display Panel (PDP) featuring high contrast, high resolution and wide visual angle, shows great advantages in competition.The design of display system, which is usually based on specific display equipment, is propelled by the development of FPD. Generally, a display system consists of interface converting circuit, image-processing circuit, driving & controlling circuit and display equipment. Interface converting circuit makes system compatible to certain signal format. Image-processing circuit provides proper sequence and image signal for driving & controlling circuit, which directly links to display equipment and shows great influence on display effect and system stability.This dissertation includes some important aspects of display system design based on FPD. First, an analysis is given on how to design an interface converting circuit and also an implementation of S-Video/CVBS interface for LCD is explained in detail. In this dissertation, dithering algorithm is introduced to solve "false contour" a phenomenon appears when the grayscale level of an image is decreased. Two kinds of dithering algorithm are modified and simplified for the implementation on a FPGA. Finally, getting experience in the design of a PDP driving circuit, several approaches are given on improving system stability and cutting down power consumption.