Designing of Test Signal and Decoder of High-Definition Digital Video Presenter

In order to solve the internal test signal of high-definition Digital Video Presenter, and the problem of video test signals can not provide the RGB data to the encoder, adopting precise test signal source and high definition horizontal and field sync signal resolve the data of encoder and simplifies the drive control circuit debugging. By introducing FSM (finite state machine) of video test signal solve the problem of test signal source (8 color bars, 16 step gray bars, multi-burst signal, x signal, horizontal advance signal, trapezium signal). The encoder translate the serial data of color ITU-R BT.605 into parallel data formats of 8-bit YCbCr (4:2:2) by designing the delay of horizontal and field sync signal and loop counter. In this scheme, the designing can effectively solve the problem of video test signal source and encoding, and is suitable for other multi-media video.