US Patent 7504970 Data encoder

A data encoder. The novel encoder includes a first circuit for generating a fundamental sequence coded data stream from an incoming input data stream, a second circuit for generating a k-split data stream from the incoming data stream, and a third circuit for combining the fundamental sequence coded data stream and k-split data stream to form a final encoded output. The first circuit includes a circuit for converting the incoming input data stream into a novel intermediate format comprising a set bit word and a zero word count, and a zero-word expander for converting the intermediate format to the fundamental sequence coded data stream. The first circuit may also include a register adapted to store the intermediate format to provide rate buffering.