Patent ID: 8804841
Filing Date: 2014-08-12
Classification: H04N

Abstract:
1. A digital broadcast receiver, comprising: a reception unit receiving a transport stream (TS) which comprises additional data including known data which is known previously between the digital broadcast receiver and a digital broadcasting transmitter; a decoder performing decoding of the additional data; and a processor performing Reed-Solomon (RS) decoding of the decoded additional data, wherein the decoder comprises: a first decoder which trellis decodes the additional data, a deinterleaver which deinterleaves the trellis-decoded additional data, and a second decoder which convolution decodes the deinterleaved additional data, wherein the decoder further comprises an interleaver which interleaves the convolution decoded additional data that is convolution decoded by the second decoder, and wherein the TS is transmitted from the digital broadcasting transmitter comprising a deinterleaver to deinterleave the additional data, a Trellis encoder to initialize internal memories used for Trellis-encoding at a beginning of the known data and to perform Trellis-encoding of the known data by using the initialized internal memories, and a parity generating unit to receive data altered according to the Trellis-encoding and to generate an RS parity corresponding to the altered data so that an RS parity corresponding to the data before being altered is replaced with the regenerated RS parity.