EMC And HDMI Design For The LCD TV

With the developing of techonology and the promoting of people life,People attach importance to health and environment protecting more and more.All the electric producer have realized that it is important to develop the health,environment protecting,and better electric product.There are mostley the CRT TV in Chinese Market percently.Because of its huge cubage,small display size and large power waster,the CRT TV is doomed to disappear in the market in future.The technology of flat display is becoming the chief in display.And the LCD(Liquid Crystal Display) technology that has been used in the most display field is the most popular in flat display now.Because of its small cubage,better picture quality,no rodiation and low power waster, the LCD is the most popular display product in market now replacing the CRT.The hardware circuit of the LCD TV in this article is designed basing on the chip MST9E88 including high frequency signal receiving,video decoder, VGA singal A/D convert and OSD control.Attach 1 is the Schematic chart for the LCD TV. The chip system can auto distinguish and process all the video signal including the PAL system signal,PAL/NTSC/SECAM system video signal,PC signal,SDTV signal and HDTV signal. The chip can convert the signal into LVDS capable of driving the LCD panel.And the chip can switch free among the different source input.In this article,out analyse will be emphasized on the two new importand factor Electromagnetic Compatibility design and HDMI design.