WAVEFORM EQUALIZING METHOD FOR MUSE SIGNAL

摘要

PURPOSE:To implement equalizing processing accurately without being affected by a preceding ghost of a frame pulse when a tap coefficient of an adaptive equalization filter is controlled based on a detection output of transmission distortion for a VIT signal period to implement waveform equalization of a MUSE signal. CONSTITUTION:A preceding ghost of a VIT signal with a maximum time is detected from the VIT signal and the detection of transmission distortion of the VIT signal is inhibited for a succeeding period by the maximum time from a front ridge of a frame pulse. Or a preceding transmission distortion of the VIT signal is detected at first and a tap coefficient of an adaptive equalization filter 5 is controlled based on the detection output, a succeeding ghost of the VIT signal is detected and the tap coefficient is controlled again based on the detection output.