EQUALIZER USED FOR HIGH DEFINITION TELEVISION AND EQUALIZING METHOD

摘要

PURPOSE: An equalizer used for a high definition television and an equalizing method are provided to increase a convergence speed of an inputted signal by inputting training sequence to an equalizer for a blind mode as well as for a training mode. CONSTITUTION: In the case that a predetermined equalizer output signal is not converged, an input signal recycling unit(410) inputs training sequence stored for a training mode to a predetermined filter(430) for a blind mode. The predetermined filter receives an output signal(OMUX2) of the input signal recycling unit, and corrects distortion of an inputted signal(INDATA) in response to a predetermined error signal(ERRV) and a predetermined decision value(DCSV) to output the corrected signal as an equalizer output signal(EQOUT). An error operation unit(465) receives the equalizer output signal for approximating the equalizer output signal to a certain approximate value to be output as the decision value. The error operation unit generates a difference between the equalizer output signal and the decision value as the error signal.