Disk drive having eccentricity correction device

Details Disk drive having eccentricity correction device Disk drive having eccentricity correction device

1996-10-10

1998-10-20

Levy, Stuart S.

Dynamic information storage or retrieval

Dynamic mechanism subsystem

Specific detail of storage medium support or motion production

369264, G11B 2300

Patent

active

058257462

ABSTRACT:
In an optical disk drive having an eccentricity correction device for correcting the eccentricity of a disk loaded on a turntable, a central ring is installed on the turntable to move the disk loaded on the turntable by a predetermined distance from the center of rotation of the turntable, and the central ring is properly moved by a moving mechanism. Therefore, the eccentricity of the disk can be precisely corrected, and, when a pickup records or reproduces information, the time for tracking can be sharply reduced and tracking errors can be prevented.

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patent: 4933927 (1990-06-01), Ross
patent: 5043973 (1991-08-01), Ocheltree et al.
patent: 5228023 (1993-07-01), Hartog
patent: 5627810 (1997-05-01), Ohmori et al.
JAPIO Abstract Accession No. 03876161 & JP 040241261 A (Dainippon ) 28 Aug. 1992 (Abstract).
JAPIO Abstract Accession No. 03420367 & JP 030083267 A (NEC) 09 Apr. 1991 (Abstract).
JAPIO Abstract Accession No. 02967061 & JP 010264661 A (Victor) 20Oct. 1989 (Abstract).

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