Abstract: A DTMB-based control system includes a carrier mode detector, a TPS decoder, a first latch, a second latch, and a latch controller. The carrier mode detector receives a number of NTPS and NCS of input signals to thereby produce an amplitude sign signal and a carrier sign signal for accordingly determining a carrier mode to be multi- or single-carrier mode. The TPS decoder receives the NTPS input signals and accordingly determines a codeword index signal. The first latch locks the amplitude sign signal and the carrier sign signal. The second latch locks the codeword index signal. The latch controller receives a frame number and drives the first latch to lock the amplitude sign signal and the carrier sign signal or drives the second latch to lock the codeword index signal.

Abstract: A Digital Terrestrial Multimedia Broadcasting (DTMB)-based carrier mode detection system includes first and second TPS decoders, first and second carrier calculators and a determinator. The first and second TPS decoders respectively receive NTPS input signals to thereby produce the corresponding NTPS mask signals and to respectively perform an absolute operation on the corresponding NTPS mask signals to accordingly select a maximum result as first and second absolute maximum mask signals for output. The first and second carrier calculators respectively receive NCS input signals and produce first and second absolute summation carrier signals. The determinator is based on the first absolute maximum mask signal, the first absolute summation carrier signal, the second absolute maximum mask signal and the second absolute summation carrier signal to accordingly determine that the carrier mode is of a multi- or single-carrier mode.

Abstract: A DTMB-based control system includes a carrier mode detector, a TPS decoder, a first latch, a second latch, and a latch controller. The carrier mode detector receives a number of NTPS and NCS of input signals to thereby produce an amplitude sign signal and a carrier sign signal for accordingly determining a carrier mode to be multi- or single-carrier mode. The TPS decoder receives the NTPS input signals and accordingly determines a codeword index signal. The first latch locks the amplitude sign signal and the carrier sign signal. The second latch locks the codeword index signal. The latch controller receives a frame number and drives the first latch to lock the amplitude sign signal and the carrier sign signal or drives the second latch to lock the codeword index signal.