Dynamic information storage or retrieval – Information location or remote operator actuated control – Selective addressing of storage medium
Patent
1990-08-31
1992-02-04
Envall, Jr., Roy N.
Dynamic information storage or retrieval
Information location or remote operator actuated control
Selective addressing of storage medium
364 4411, 364 4432, 364 4428, G11B 700
Patent
active
050864190
ABSTRACT:
When a light beam of a reference optical head correctly tracks on the center of a proper track, deviation, due to an optical head assembling error or an optical disk eccentrically, of a light beam of a non-reference optical head from the center of said proper track is memorized in advance as bias information. At a time of a seek control or a track lump control, the non-reference optical head is controlled to move along a track with said bias information, so that not only the reference optical head but also the non-reference optical head correctly track on the proper aimed track, when a seek control or a track jump control is performed. This invention enables both the light beam of the reference optical head and the light beam of the non-reference optical head to correctly track on a proper track without being affected by neither any optical head assembling error nor any optical disk eccentricity.
REFERENCES:
patent: 4841502 (1989-06-01), Murakami et al.
patent: 4873679 (1989-10-01), Murai et al.
Envall Jr. Roy N.
Fujitsu Limited
Tran Thai
LandOfFree
Optical disk apparatus for controlling second optical beam based does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Optical disk apparatus for controlling second optical beam based, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical disk apparatus for controlling second optical beam based will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-350576