The Design And Implementation Of TV Capture Card For Digital Signal

In this project, we aim to design a TV capture card for digital signal . This design isbased on MPEG-2/DVB standard computer PCI inserts the card, installs to the computer on,may receive the numeral video signal and the DVB data broadcast which the wiredtelevision network transmits, and may the compatible simulated signal receive. In thedesign makes every effort to unify the newest technology, provides a low cost, the hightarget design proposal, follows close on the market footsteps, by impels the digitaltelevision production.The electric circuit has selected the video decoding performance prominent Phillipssaa7130 chip, stv0297 tuner;And used the surface to paste nearly completely installs thecomponent, has avoided the complex structure and the massive periphery may adjust thecomponent, realized the high integration rate, did not need in the production artificially todebug. The software uses VC++.Net in the com connection upper formation compilationdriver which 7130 provides, and uses directshow in the upper formation to carry on videoprocessing and the broadcast.In view of the fact that the digital television broadcast and the simulated signal willcoexist in the certain time, in order to meet user's use need, solution compatible two kind ofsignals receive. This TV capture card can receive the digital television not merely, and mayreceive from DV\Photographs the prime input the simulated signal. The design carries onaccording to the related standard and the production request, to product transformation.