Dynamic information storage or retrieval – With servo positioning of transducer assembly over track... – Optical servo system
Patent
1983-04-22
1986-07-01
Psitos, Aristotelis M.
Dynamic information storage or retrieval
With servo positioning of transducer assembly over track...
Optical servo system
369 32, 358342, G11B 700, G11B 1722, H04N 5783
Patent
active
045983941
ABSTRACT:
An optical reproducing apparatus for read-out of information recorded in parallel, substantially circular tracks on a record disc includes an optical pickup head having an object lens for focusing a light beam at the disc, a tracking servo mechanism for controlling the point of impingement of the light beam on the record disc in directions transverse to the tracks, a jump pulse generator, a drive motor for moving the optical pickup head along a radial direction of the disc, and a control circuit for driving the motor. In an access or search mode of the apparatus, the jump pulse generator provides jump pulses to the tracking servo mechanism by which the point of impingement of the light beam is made to jump across the tracks toward a desired or target track. In response to the jump pulses, the control circuit provides respective drive signals for the motor with the duration of each drive signal being greater than the duration of the respective jump pulse to compensate for the effect of the relatively large inertia of the optical pickup head.
REFERENCES:
patent: 4234837 (1980-11-01), Winslow
patent: 4375091 (1983-02-01), Dakin et al.
patent: 4414584 (1983-11-01), Kurata
patent: 4425587 (1984-01-01), Kurata
patent: 4488184 (1984-12-01), Kurata
patent: 4494154 (1985-01-01), Akiyama
LandOfFree
Optical reproducing apparatus with fast access mode operation 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 reproducing apparatus with fast access mode operation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical reproducing apparatus with fast access mode operation will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1085998