Patent ID: 8102922

Claim:
A demodulator device for digital TV receiver, comprising: a plurality of units adapted to process a transport stream in accordance with a transmission condition of the transport stream, wherein the units include: a symbol-deinterleaver performing symbol-based deinterleaving; a bit-deinterleaver performing bit-based deinterleaving; a demapper performing demapping; and a Viterbi decoder performing Viterbi decoding, wherein a first unit among the symbol-deinterleaver, the bit-deinterleaver and the demapper includes a memory storing symbol-deinterleaved data that has undergone symbol deinterleaving and includes a plurality of symbols, and a second unit among the symbol-deinterleaver, the bit-deinterleaver, the demapper and the Viterbi decoder reads the symbol-deinterleaved data with throughput rate equal to 1/(N * a number of data words per symbol in the symbol-deinterleaved data), N being a positive non-zero parameter adjustable according to the transmission condition.