Data Frame Structure and Synchronyzation System for Digital Television Signal

摘要

A television signal is formatted for transmission by arranging a plurality o f encoded data symbols, representing a plurality of source data bytes, into successive data frames each comprising 313 data segments. One of the data segments of each frame comprises a frame sync segment of which the last (12) symbols comprise a copy of the last (12) encoded data symbols the preceding data segment. The remaining segments of each frame comprise (12) interleaved subsegments A-L, each subsegment comprising a plurality of encoded data symbols representing a contiguous group of sources data bytes, with the firs t symbol of each of the first (4) subsegments A-D comprising a predetermined segment sync symbol. The received signal is decoded by independently processing the symbols of each respective subsegment to derive estimations o f the source data bytes.