Dynamic information storage or retrieval – With servo positioning of transducer assembly over track... – Optical servo system
Patent
1996-06-24
1998-06-16
Huber, Paul W.
Dynamic information storage or retrieval
With servo positioning of transducer assembly over track...
Optical servo system
369 4432, 369 54, 360 7805, G11B 700, G11B 5596
Patent
active
057682267
ABSTRACT:
In an information recording/reproducing apparatus, a head is moved across tracks on a recording medium to thereby perform a coarse seek to a position near a target position. A recording/reproducing portion of the head is moved in the track intersection direction to thereby perform a fine seek to the target position. A moving velocity of the portion of the head with respect to the medium is detected by a first detector. A target moving velocity is caluculated in accordance with a remaining distance to the target position of the portion of the head. A moving displacement or moving velocity of the portion of the head is detected by a second detector. A detection value from the first detector is corrected on the basis of a detection value from the second detector to eliminate a variation component generated by a disturbance of the portion of the head.
REFERENCES:
patent: 467039 (1892-12-01), Meyer
patent: 5090001 (1992-02-01), Ito et al.
patent: 5117410 (1992-05-01), Akiyama
patent: 5260923 (1993-11-01), Babo
patent: 5317550 (1994-05-01), Semba
Patent Abstracts of Japan, Kokai No. 01-048275, vol. 13, No. 250, Feb. 1989 .
Canon Kabushiki Kaisha
Huber Paul W.
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