Patent ID: RE39111

Claim:
A receiving apparatus comprising: a channel selector connected to a variable oscillator for changing a frequency of an oscillation signal of said variable oscillator; a mixer connected to said variable oscillator for converting a received signal by using said oscillation signal , into a an M-value VSB modulation modulated signal, where M is an integer; a demodulator for demodulating said M-value VSB modulation modulated signal to reproduce an encoded signal; and a trellis decoder for trellis decoding said encoded signal to obtain a trellis-decoded signal, wherein said received signal is a time division multiplexed signal transmitted by a time division multiplexing, and is demodulated as an 8-value VSB modulation modulated signal in a first mode and is demodulated as an N-value VSB modulation modulated signal in a second mode, where N is an integer less than 8.