发明名称 |
Tracking control system for magnetic video recording and reproducing system |
摘要 |
A tracking control system for a magnetic video recording and reproducing system, in which a signal is recorded on a magnetic tape as record tracks at an angle with respect to the longitudinal direction of the tape and is reproduced therefrom by rotary magnetic heads. At the time of start of playback, the relative phase of scanning tracks of the rotary heads and the afore-said record tracks is automatically varied at a predetermined cycle. During the period of this variation, a phase position at which a maximum value of the level of the reproduced signal from the rotary heads is detected, and the phase variation is stopped at the detected phase position so as to let the scanning tracks of the rotary heads coincide with the record tracks.
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申请公布号 |
US4127881(A) |
申请公布日期 |
1978.11.28 |
申请号 |
US19760733123 |
申请日期 |
1976.10.18 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
WAKAMI, NOBORU;DEGUCHI, MASAHIRO |
分类号 |
G11B15/467;(IPC1-7):G11B21/10;G11B15/46 |
主分类号 |
G11B15/467 |
代理机构 |
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代理人 |
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