A data separating device extracts intra-frame or intra-field encoded blocks from an intra-frame or intra-field encoded, and inter-frame or inter-field encoded digital video signal, and a digital audio signal contained in an input bit stream. An error correction code appending device appends error correction...http://www.google.ca/patents/US5960150?utm_source=gb-gplus-sharePatent US5960150 - Digital VTR
