发明名称 Reproducing apparatus with erasing device and erasing function based on frequency multiplexed and/or DPSK coded signal
摘要 An erasing device for a magnetic video recorder is disclosed which includes a means for reproducing a code signal and a video signal from a magnetic medium. The code signal is discriminated to decide whether the video signal is a field video signal or a frame video signal. When the video signal is discriminated to be the frame video signal, the erasing device erases the video signal over a broader range than when the video signal is discriminated to be a field video signal.
申请公布号 US4849832(A) 申请公布日期 1989.07.18
申请号 US19870033339 申请日期 1987.03.31
申请人 CANON KABUSHIKI KAISHA 发明人 YAMAGATA, SHIGEO;OGURA, TOKIHIKO;TAKEI, MASAHIRO;SUZUKI, YASUTOMO
分类号 G11B5/012;G11B19/04;G11B33/10;H04N5/781;H04N5/92;H04N5/93 主分类号 G11B5/012
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