Dynamic information storage or retrieval – With servo positioning of transducer assembly over track... – Optical servo system
Patent
1991-10-07
1993-10-19
Psitos, Aristotelis
Dynamic information storage or retrieval
With servo positioning of transducer assembly over track...
Optical servo system
369 32, 360 7806, G11B 700
Patent
active
052552535
ABSTRACT:
In this invention, a driving circuit for moving a head in the radial direction on the recording surface of a disk is coupled to a velocity detecting circuit for detecting the velocity at which the head moves. A velocity profile is provided for storing information on the target velocity of the head. A driving signal generating circuit is coupled to the velocity profile and the velocity detecting circuit for comparing a signal from the velocity detecting circuit with a signal from the velocity profile. The driving signal generating circuit outputs a driving signal to the driving circuit based on the result of the comparison. A controller is coupled to the driving circuit for measuring a time required for moving the head a predetermined distance at a predetermined reference value, and modifying the driving signal based on the result of the comparison. Scatter in feedback quantities or fluctuation in the driving signal during velocity control is thereby corrected.
REFERENCES:
patent: 4855977 (1989-08-01), Getreuer et al.
patent: 4899234 (1990-02-01), Genheimer
patent: 4914725 (1990-04-01), Belser et al.
patent: 5033037 (1991-07-01), Yanagi
patent: 5038333 (1991-08-01), Chow et al.
patent: 5046058 (1991-09-01), Shimonau
patent: 5048001 (1991-09-01), Moriya et al.
patent: 5050146 (1991-09-01), Richsels et al.
patent: 5088075 (1992-02-01), Yokota
patent: 5101391 (1992-03-01), Ishii et al.
Kagami Naoyuki
Kubo Hiroaki
Okada Keiichi
Takekoshi Makoto
Hindi Nabil
International Business Machines - Corporation
Psitos Aristotelis
Schecter M. W.
Shifrin D. A.
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