Research And Implementation Of PAL To LVDS Video Conversion Algorithm

With the development of science and technology and economy, the informationon people’s work and life become more and more important, and people get andexchange of information is the main form of video images. Because of the videoimage exist a variety of formats, such as the standard definition of NTSC, PAL andSECAM system analog video signal, ATSC digital TV system is the United States andEurope DVB system, analog and digital video signal and computer systems. Thisbrings to the video signal is compatible with a lot of problems. Mainly reflected in theTV system and computer monitor system to achieve strategic transformation needmore complex image processing technology. For most of the display device,the videoformat conversion technology is a key technique in the field of video processing.Thevideo signal input format and display devices required format in significantdifferences in such aspects as image refresh rate, scanning way, screen resolution.It isin order to solve the above format differences, format conversion chip becomeindispensable key components display system.In the paper，the hardware system will be WSC2810as the main processing chip.This chip is a new kind of multifunctional video format conversion chip, includingthe function such as interlaced line by line, size scale, frame frequency ascension,with image and video overlay the man-machine dialogue interface, and otherfunctions. Through analysis and comparison of several kinds of algorithm simulationexperiments, and respectively established used to interlaced and optimized framefrequency ascending motion adaptive algorithm, designed a multi-function videoconversion adapter with LVDS (Low Voltage Differential Signaling Low VoltageDifferential signal) format output interface. LVDS is an international commoninterface standard for high speed signal transmission, at the same time with highspeed, low noise, low power consumption and low cost advantage. LVDS high speedI/O interface unit is a high performance computers and communication electronic setin each important component, can in a wide range of applications solve the bottleneckproblem of high-speed data transmission. So this topic has very high application value.