Disk drive apparatus initializing optical head during accelerati

Details Disk drive apparatus initializing optical head during accelerati Disk drive apparatus initializing optical head during accelerati

1997-12-19

1999-06-22

Young, W. R.

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

369 50, 369 54, 369116, G11B 7095

Patent

active

059149213

ABSTRACT:
A disk drive apparatus includes a driving circuit which rotates a recording media having a disk shape, and a read/write head movable in a radial direction of the recording media and a vertical direction substantially perpendicular to a plane of the radial direction. The read/write head writes data on the recording media and reads data therefrom. The disk drive apparatus also includes an initialization unit which initializes the read/write head during a period until the recording media starts to rotate and the rotating speed of the recording media reaches a predetermined constant speed so that the disk drive apparatus is set to a read/write enable state where the read/write head is correctly positioned with respect to the recording media in order to correctly write data on the recording media and read data therefrom.

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Patent Abstracts of Japan, vol. 8, No. 282 (P-323)(1719) Dec. 22, 1984 for JP-A-59-148183 (Hitachi) of Aug. 24, 1984.
Interim Version of DIS 10089, ISO/IEC JPC1 Information Technology, SC23/WG1.JTC1/SC23 N 321, Jul. 1990, pp. 37-42.

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