Patent ID: 8212941

Claim:
A digitized analog television signal processing system, comprising: an analog-to-digital converter configured to sample a television signal comprising a video signal; a demodulation unit configured to demodulate the video signal, wherein the television signal further comprises a sound signal, the demodulation unit comprises a filter bank configured to separate the video signal and the sound signal from the television signal; a decoding unit configured to decode the demodulated video signal; and a control unit configured to adjust the demodulation unit according to a signal quality indicator generated during and/or after the decoding of the decoding unit, wherein the digitized analog television signal processing system further comprises a sound processing unit configured to demodulate and/or decode the sound signal, the signal quality indicator is further generated during and/or after the processing of the sound processing unit, wherein the signal quality indicator comprises a signal-to-noise ratio (SNR) of the video signal, the control unit is configured to make a bandwidth of the filter bank reduced when the SNR is lower than a threshold.