Dynamic information storage or retrieval – With servo positioning of transducer assembly over track... – Optical servo system
Patent
1994-06-13
1995-08-15
Sugarman, Scott J.
Dynamic information storage or retrieval
With servo positioning of transducer assembly over track...
Optical servo system
369 4414, 359813, 359823, G11B 712
Patent
active
054426065
ABSTRACT:
An apparatus for the dynamic positioning of an objective lens in an optical disk drive comprises a housing, a lens unit movable in a focusing and a tracking direction, a magnetic circuit mounted to the lens unit for creating a first magnetic field, a pair of current conducting coils mounted to the housing and arranged orthogonal to the first magnetic field, and a flexure for flexibly supporting the lens unit in the housing. An active region comprising at least half of the coil creates the second magnetic field in response to current passing therethrough to interact with the first magnetic field and apply a force to the lens unit. This efficient coil arrangement allows for a small, lightweight dual-purpose magnetic circuit which substantially reduces the weight of the lens positioning apparatus. The housing is a one-piece injection molded ceramic component which maximizes stiffness and minimizes weight to improve the performance of the apparatus.
REFERENCES:
patent: 4016504 (1977-04-01), Klauminzer
patent: 4368957 (1983-01-01), Chirra
patent: 4389101 (1983-06-01), Van Rosmalen
patent: 4422169 (1983-12-01), Vitale
patent: 4451913 (1984-05-01), Elliott
patent: 4564931 (1986-01-01), O'Hara
patent: 4568142 (1986-02-01), Iguma
patent: 4615585 (1986-10-01), Van Sluys
patent: 4633456 (1986-12-01), Luecke
patent: 4646283 (1987-02-01), Ito
patent: 4702569 (1987-10-01), Mercado
patent: 4704008 (1987-11-01), Mercado
patent: 4734905 (1988-03-01), Kuwayama
patent: 4734906 (1988-03-01), Baer
patent: 4742218 (1988-05-01), Nakamura
patent: 4761064 (1988-08-01), Mercado
patent: 4770507 (1988-09-01), Arimoto
patent: 4774699 (1988-09-01), Giddings
patent: 4789977 (1988-12-01), Oudenhuysen
patent: 4798447 (1989-01-01), Jansen
patent: 4799210 (1989-01-01), Wilson
patent: 4809247 (1989-02-01), Elliott
patent: 4891799 (1990-01-01), Nakano
patent: 4939711 (1990-07-01), Yoda
patent: 5136558 (1992-08-01), Getreuer et al.
Johnson Brad
McCaslin Martin
Edun Muhammad N.
Hyundai Electronics America Inc.
Sugarman Scott J.
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