Digital video data decoder and associated control procedure

摘要

The digital video data decoder includes a synchronising pattern detecting and generating section (30), containing a large number of stored synchronising signals, and matching the stored synchronising data with the format of the input data. A sequence control section (40) is used to extract the input data from starting data and user data. A buffer section (70) stores the sequence control unit output, and a cyclical redundancy check section (50) determines whether or not there are errors in the input data so that compensation can be made as necessary. A direct memory accessing section (60) outputs all the data, including the compensating data, directly to the external system, without passing it through the CPU control section first.