Patent ID: 6470472
Filing Date: 2002-10-22
Classification: H03M

Abstract:
A receiving arrangement for receiving a digitally coded data signal transported over a channel, which data signal comprises a number of sequences, each sequence being divided into a number of blocks, each block in turn comprising a number of bits, said receiving arrangement comprising error correcting means providing a number of alternative blocks, error detecting means, and storing means for storing information relating to each possible block position of a sequence, said error detecting means comprising a differential CRC-decoder including first decoding means for decoding a sequence of blocks using a reference sequence to provide a reference syndrome and second decoding means for decoding selected alternative differential blocks of the sequence obtainable via the error correcting means, said differential blocks being calculated as the difference between the corresponding block of the reference sequence and each alternative block, respectively, to provide differential syndromes, resulting syndromes being calculated as the sum of the reference syndrome and a number of differential syndromes, respectively.