28and sends to MPEG-2 decoder and analytic software to recover the digital information.¾ Video decoder, audio D/A conversion: MPEG-2 decoder decompresses the audio/video signal,via video coder and audio D/A conversion, recovers analog audio/video signal to display thehigh quality image on the analog TV, it also provides multi-channel stereo programs.¾ Inlaid CPU, memory module and interface circuit: inlaid CPU is heart of the DVB module, itand memory are used to store and run software. Control every hardware module. Interfacecircuit provides plenty external interfaces: including Guest Bust bus line, general serialinterface, MODEN V90 interface, RS-232, analog/ digital video/audio and data interface ect.Function of Supra TV ZR3915X:DVB-T module made up of ZR3915X first distils channel code information from transport layer tocomplete channel demodulation, then recovers compressed signal of source code to originalvideo/audio stream and completes data and multi-application of reception and analytic.1) Internal block diagram: