Rotation control device using reproduced synchronizing signal

Details Rotation control device using reproduced synchronizing signal Rotation control device using reproduced synchronizing signal

1989-06-15

1991-11-19

Psitos, Aristotelis

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Synchronizing moving-head moving-record recorders

360 7713, G11B 2104

Patent

active

050670336

ABSTRACT:
A rotation control device comprises a rotary body arranged to move a head and a recording medium relative to each other in performing recording or reproduction on or from the recording medium; means for performing speed servo-control by detecting any speed deviation of the rotary body; means for performing phase servo-control by detecting any phase deviation of the rotary body; and means for performing the speed servo-control over the rotary body by detecting a phase-locked state of the rotary body and by synchronizing the rotary body with a synchronizing signal reproduced from the recording medium.

REFERENCES:
patent: 4672475 (1987-06-01), Nakasho
patent: 4920435 (1990-04-01), Yamazaki
patent: 4924326 (1990-05-01), Takimoto et al.
Webster, C. R., "A New Sync-Lock Servo System for Video Tape Recording", Tech. paper delivered to IEEE, Sep. 23, 1965.

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