Dynamic magnetic information storage or retrieval – Automatic control of a recorder mechanism – Controlling the head
Patent
1986-12-04
1989-05-30
Faber, Alan
Dynamic magnetic information storage or retrieval
Automatic control of a recorder mechanism
Controlling the head
360 7706, 369 43, G11B 5596, G11B 2110
Patent
active
048356310
ABSTRACT:
A device for tracking a rotary recording medium includes a playback head for reading a signal from any of a plurality of tracks which are formed on the rotary recording medium, which is rotating at a predetermined constant speed, such that a beginning and an end of a recording in each of the tracks coincide with each other, a head support mechanism supporting the head such that the head is movable along the recording medium, an arrangement for detecting an envelope of a signal which is read out of the recording medium by the head, and a controller for controlling the head support mechanism to move the head to a position where a desired one of the tracks is located. An arrangement for detecting a position of the head relative to the recording medium and an arrangement for detecting a rotation phase of the recording medium are provided. The controller controls the head support mechanism to transport the head, while the position detecting arrangement during transport of the head detects positions of the head at which a peak of an envelope is detected in one track at each of a plurality of angles of rotation of the recording medium. The controller produces a means position of those positions of the head detected and, then, controls the head support mechanism to transport the head to the mean position.
REFERENCES:
patent: 4087842 (1978-05-01), Manly
patent: 4142209 (1979-02-01), Hedlund et al.
patent: 4149199 (1979-04-01), Chick et al.
patent: 4205338 (1980-05-01), Schaefer
patent: 4247741 (1981-01-01), Tatsuguchi et al.
patent: 4334276 (1982-06-01), Turnbull
patent: 4365324 (1982-12-01), Michaelis
patent: 4445153 (1984-04-01), Fujimoto et al.
patent: 4485418 (1984-11-01), Bremmer
patent: 4628379 (1986-12-01), Andrews, Jr. et al.
"Disk Runout Accommodation", IBM Technical Disclosure Bulletin, vol. 21, No. 7, Dec. 1978, pp. 2688-2691, J. P. Mantey.
Kaneko Kiyotaka
Miyake Izumi
Nakadai Katsuo
Oda Kazuya
Faber Alan
Fuji Photo Film Co. , Ltd.
Robertson David L.
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