Patent ID: 8739002

Claim:
A decoder that performs a decoding process on an encoded data signal, the decoder comprising: a burst detecting unit that performs a parity check on the encoded data signal that is encoded with at least a low density parity check code, detects and outputs burst information only using the low density parity check code, wherein the burst information includes information by which a position and a length of a burst error of the encoded data signal are specified, and wherein the burst detecting unit performs the parity check on the encoded data signal for each row of a parity check matrix, adds up a number of bits “1” of a row detected as an error in the parity check for each column of the parity check matrix corresponding to bits of the encoded data signal, specifies the position and the length of the burst error of the encoded data signal in accordance with a distribution of an added-up number, and generates and outputs the burst information.