Dynamic magnetic information storage or retrieval – Automatic control of a recorder mechanism – Synchronizing moving-head moving-record recorders
Patent
1992-12-16
1995-10-24
Psitos, Aristotelis
Dynamic magnetic information storage or retrieval
Automatic control of a recorder mechanism
Synchronizing moving-head moving-record recorders
360 7312, 360 7713, G11B 2104, G11B 5584
Patent
active
054615194
ABSTRACT:
A digital tape recording and reproducing apparatus includes a rotary drum, a magnetic tape helically wrapped around the rotary drum, a mechanism for advancing the magnetic tape relative to the rotary drum, and a recording/reproducing magnetic head mounted on the drum which scans the magnetic tape for recording or reproducing digital signals. The digital signals are recorded in, or reproduced from, successive inclined tracks formed on the tape as the tape is advanced. During recording of the signals, a timing signal is generated at a predetermined interval of time after detection of a reference signal that represents a phase of rotation of the drum, and then the timing signal is recorded in at least one of the inclined tracks, interspersed with the digital signals recorded in the track. During reproduction of signals from the tape, the drum phase reference signal is detected and the timing signal is reproduced and detected, and the time interval between detection of the two signals is measured. The mechanism for advancing the tape is controlled on the basis of the measured interval so that the magnetic head properly scans the recorded tracks.
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Iwasaki Yasuo
Yoshihiro Mitsugu
Frommer William S.
Kapadia Varsha A.
Psitos Aristotelis
Sinderbrand Alvin
Sony Corporation
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