Optical recording/reproducing apparatus which reduces seek time

Details Optical recording/reproducing apparatus which reduces seek time Optical recording/reproducing apparatus which reduces seek time

1991-05-22

1993-12-07

Psitos, Aristotelis

Dynamic information storage or retrieval

Systems having plural physically distinct independent tracks...

Continuous consecutive storage or retrieval of interrupted...

369 4428, 369 4425, 369 4429, 369 32, G11B 700

Patent

active

052688917

ABSTRACT:
An optical recording/reproducing apparatus effects a seek operation by moving an optical pick-up, which includes an objective lens for projecting a light spot onto an optical card, in a tracking direction perpendicular to the track direction over a desired distance between a current track on which the light spot is currently made incident and a desired track on which the light spot is to be made incident next. To reduce the access time during a seek operation, the vibration of the optical card is monitored and the tracking control is started substantially immediately when the light spot is just made incident upon the desired track. The tracking control may be initiated, e.g., at a timing which is separated from a peak of the vibration by 1/4 of a period of the vibration. Alternatively, the tracking control may be started when the acceleration of the vibration becomes zero. The tracking control may be initiated virtually immediately after the movement of the pick-up is stopped, when the distance of the movement of the pick-up is corrected by a correction amount which is presumed in accordance with positions of the current track and the desired track.

REFERENCES:
patent: 4967293 (1990-10-01), Aruga et al.
patent: 5038333 (1991-08-01), Chow et al.

Affiliated with

Also associated with

Rating

Optical recording/reproducing apparatus which reduces seek time 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 recording/reproducing apparatus which reduces seek time , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical recording/reproducing apparatus which reduces seek time will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2020927