发明名称 PROCESSING CIRCUIT FOR RECORDING AND REPRODUCTION OF VIDEO SIGNAL
摘要 PURPOSE:To achieve the suppression of the crosstalk of a color signal and line correlation at a time by a video signal by using a broad-band delay line and by transmitting a video signal, containing a luminance signal and a color signal, through the delay line. CONSTITUTION:To the output terminal of a switch 21, a video signal from one- horizontal-scanning-period video delay line 22 in the last horizontal scanning period is connected and in a mixture 24, a luminance signal in the last horizontal scanning period is entered. A mixture 25, on the other hand mixes only a video signal generated in the last horizontal scanning period, so the video signal in the last horizontal scan ning period is obtained as the output of the mixer 25 and supplied to an HPF26 for band limitation, so that a color signal generated in the last horizontal scanning period is supplied to the mixer 24. Thus, a mixed video signal in the last horizontal scanning period added the luminance signal and color signal in the last horizontal scanning period appears at the output of the mixer 24, thereby compensating a dropout.
申请公布号 JPS5732187(A) 申请公布日期 1982.02.20
申请号 JP19800107159 申请日期 1980.08.06
申请人 HITACHI LTD 发明人 KOJIMA NOBORU;SHIBATA AKIRA
分类号 H04N5/91;H04N9/79;(IPC1-7):04N5/91 主分类号 H04N5/91
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