发明名称 |
MAGNETIC RECORDING AND REPRODUCING DEVICE |
摘要 |
PURPOSE:To prevent an image from deterioration due to the interference of an unerased signal and to suppress the increase of cost at its minimum by using a pair of the 2nd magnetic heads other than a pair of 1st magnetic head for recording video signals as erasing heads at the time of editing photographing. CONSTITUTION:An erasing signal generating circuit 26 is connected to a change- over switch 24. The output side of an erasing control circuit 27 having a command signal MOD input terminal 17, a picture recording/reproducing switching signal PB input terminal 28, a video head switching signal VH input terminal 29, and a sound head switching signal AH input terminal 30 is connected to a change-over switch 24 and respective constitutional elements in a video signal system and a sound signal system. A sound head 25 executes recording prior to recording by a video head 4 and a sound track and a video track are almost superposed. Thereby, the generation of rainbow-like noise on a screen can be suppressed by outputting a video signal erasing signal from an erasing signal oscillation circuit 26 through the change-over switch 24 and a recording amplifier 18 at the time of editing photographing.
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申请公布号 |
JPS62162202(A) |
申请公布日期 |
1987.07.18 |
申请号 |
JP19860002065 |
申请日期 |
1986.01.10 |
申请人 |
HITACHI LTD;HITACHI AUTOMOTIVE ENG CO LTD |
发明人 |
KOBAYASHI JUN;JINNO KEIJIRO;OYAGI KAZUHIRO |
分类号 |
G11B5/53;G11B5/024;G11B27/02;G11B27/024 |
主分类号 |
G11B5/53 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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