Patent ID: 7100182

Claim:
A digital vestigial sideband (VSB) transmission system comprising: a supplemental data processor receiving input supplemental data and inserting systematic Read-Solomon parity bytes, a first predefined sequence, and an MPEG header into said input supplemental data; a first multiplexer multiplexing MPEG data with said input supplemental data processed in said supplemental data processor to generate a set of data segments, each of which is any one of a supplemental data segment and an MPEG data segment; a first encoding part generating a supplemental data symbol for each supplemental data segment by initially relocating said systematic parity bytes to be placed after information bytes for each supplemental data segment and substituting nonsystematic parity bytes for said relocated systematic parity bytes; a supplemental data symbol processor generating first and second data bits for each supplemental data symbol, said first data bit being generated by post-decoding an information bit of each supplemental data symbol, said second data bit being generated by encoding said information bit with a ½ coding rate and multiplexing said encoded information bit with said first predefined sequence; and a VSB transmitter processing said data bits generated in said supplemental data symbol processor including trellis encoding and VSB modulating and subsequently transmitting said modulated data to a receiving side.