发明名称 |
VTR Circuit arrangement for recording index signal |
摘要 |
In a video tape recorder of a helical scan type, a low frequency index signal and a high frequency signal are simultaneously applied to a full erase head (FE) with the high frequency signal acting as a bias prior to the recording of a video program. After the index signal has been recorded, the application of the high frequency signal is continued to erase a prerecorded material. The high frequency biasing prevents the index signal from interfering with the video signal during playback.
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申请公布号 |
US4571643(A) |
申请公布日期 |
1986.02.18 |
申请号 |
US19830556780 |
申请日期 |
1983.12.01 |
申请人 |
VICTOR COMPANY OF JAPAN LIMITED |
发明人 |
NAMIKI, YASUOMI |
分类号 |
G11B15/087;G11B5/024;G11B5/03;G11B27/28;G11B27/30;H04N5/782;(IPC1-7):G11B5/03 |
主分类号 |
G11B15/087 |
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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