| 摘要 |
PURPOSE:To reduce the influence of dispersion in the demodulation characteristic of each channel such as the degradation in the picture quality of a reproduced picture, for example, caused by difference between the characteristics of respective low-pass filters by alternately inputting the input signals of the plural channels to the plural low-pass filters for shaping waveforms while switching the signals based on a prescribed information unit by a low-pass filter switching means. CONSTITUTION:According to values H and L of output signals to be outputted by a random number generator 20, it is switched at random whether the outputs of an ICH and QCH are respectively inputted to a low-pass filter 9 or 10. Thus, since a low-pass filter switching device 17 alternately inputs the demodulated signal of the ICH and the demodulated signal of the QCH to the low-pass filters 9 and 10, on the screen of a picture display device 26, the picture is projected while averaging the characteristic difference between the two low-pass filters 9 and 10. |
