Patent ID: 7092470
Filing Date: 2006-08-15
Classification: G11B,H03M,H04L

Abstract:
1. A code sequence including a block sync signal added to the head of a block composed of a plurality of code words, wherein the block sync signal has more than one succession of 9 same bits when the maximum length of a succession of same bits in a code sequence is Tmax=8, wherein when a code word is laid adjacent to either end of the data block, the block sync signal has no succession of more than 9 same bits between the code word laid just before the block sync signal and the block sync signal itself and between the block sync signal and the code word laid just after the block sync signal, wherein the block sync signal follows a time-varying structure of a detection trellis used for maximum likelihood detection of a code sequence including the block sync signal from an output sequence of a transmission channel, wherein the length of the block sync signal is 36 bits, an integer multiple of a code length, and wherein the same block sync signal includes three successions of 9 same bits.