Patent ID: 6377643
Filing Date: 2002-04-23
Classification: G11B,H04L

Abstract:
An apparatus for detecting a sync signal in a digital data record/replay device having a parallel clock generator, a parallel data generator, and a window unit, said apparatus comprising:a sync signal detector for comparing a pattern matching sync signal output from a sync pattern detector with an output signal of said window unit and detecting a sync signal according to clocks of said parallel clock generator; a latch unit for latching the sync signal detected by said sync signal detector and outputting said sync signal as a sync position signal according to clocks of said parallel clock generator; an identification error correction code (ID ECC) controller for generating an ID ECC control signal according to the sync position signal of said latch unit; an ID ECC decoder for decoding ID areas of parallel data generated by said parallel data generator; and a sync signal checking unit for outputting the sync position signal of said latch unit as a final sync signal and, when errors are detected as a result of the ID ECC decoding, sending a control signal to said window unit.