Patent ID: 8804859

Claim:
An apparatus for processing a time domain synchronous orthogonal frequency-division-multiplexing (TDS-OFDM) signal, comprising: a receiving block, for receiving the TDS-OFDM signal and generating a down-converted signal according to the received TDS-OFDM signal; and a demodulating block, coupled to the receiving block, for demodulating the down-converted signal to generate a transport stream, the demodulating block comprising: a transmission parameter signaling (TPS) decoder, for performing a TPS decoding operation to generate a TPS decoding result, and automatically verifying a spectrum direction of the received TDS-OFDM signal according to the TPS decoding result; wherein the TPS decoder verifies the spectrum direction of the received TDS-OFDM signal according to a first decoded codeword corresponding to a first spectrum direction and a second decoded codeword corresponding to a second spectrum direction different from the first spectrum direction; and the TPS decoder generates the TPS decoding result by: decoding TPS information to obtain a derived codeword, finding one of a plurality of predetermined codewords that is most similar or identical to the derived codeword to identify the first decoded codeword, remapping the derived codeword to obtain a remapped codeword, and finding one of the predetermined codewords that is most similar or identical to the remapped codeword to identify the second decoded codeword.