Design Of3G High-definition Video Signal Transition Interface Based On FPGA

For digital TV technology development, the High-definition TV programsproduction and transmission has been widely applied. hd market will be whichmajor equipment manufacturers compete for, with the continuous improvementof the standard of the industry and gradually getting more recognition of thedevice manufacturers obviously. At present, most of the TV programs are makingthe television signals via an hd-sdi interface of video and transmission. Butordinary surveillance equipment general rarely have such high definition via anhd-sdi interface, most of the hd equipment are made by foreign manufacturersand the price is very expensive, In this case, without lowering the quality ofprograms, how to design more low cost digital hd interface will become thepremise of big range promotion hd video.This subject is design of3G high-definition video signal transition interfacebased on FPGA, realizing the conversion of3G-SDI signal to the HDMI hdsignal high definition. This design is divided into input module, conversionmodule, output module. In the input module GS2961chip is used in the design ofthe cable equilibrium, clock recovery, and deserializing. In the conversion modulethe Cyclone III series FPGA of the company Altera is used as the master chip.Through designing the power supply circuit, FPGA configuration circuit, controlcircuit, the conversion of a series of signal processing is completed. TheWSC2010chip is used for the video format conversion function; In the outputmodule SiI9024chips is used for coding functions of the output signal HDMI.Software use VHDL language hardware description in field programmablelogic devices to finish accurate extraction data which previous chip transmits. Onthe basis of realizing of the sound, video mixed signal successfully separated, theaudio signal processing, transmitting and automatic test of video information is completed. Adjust sound, video data output timing to meet the lower chip to therequirements of the data format. Testing video and audio mixed data, the outputlevel meets the design requirements.