发明名称 |
Tracking correction for a rotary head by detection of the minimum signal level |
摘要 |
In an automatic tracking system for a magnetic recording and reproducing apparatus wherein tracking is controlled so as to increase an amplitude of a reproduced signal which is delivered from a rotary head for reproducing a track recorded by a helical scan system, the amplitudes of the reproduced signal are detected at a plurality of points of time within one rotational cycle of the rotary head, and the tracking is controlled so as to increase a minimum value among the detected values at the plurality of points of time.
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申请公布号 |
US4777543(A) |
申请公布日期 |
1988.10.11 |
申请号 |
US19860898539 |
申请日期 |
1986.08.21 |
申请人 |
HITACHI, LTD. |
发明人 |
NISHIJIMA, HIDEO;OKAMOTO, KANEYUKI;GOTO, KATSUHIKO;USAMI, HIROSHI |
分类号 |
G11B15/467;H04N5/7826;(IPC1-7):G11B5/588;G11B15/473 |
主分类号 |
G11B15/467 |
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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