Optical read/write apparatus with improved tracking performance

Details Optical read/write apparatus with improved tracking performance Optical read/write apparatus with improved tracking performance

1990-09-05

1992-08-11

Envall, Jr., Roy N.

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

369122, 369119, 369 4437, G11B 700

Patent

active

051385929

ABSTRACT:
An optical read/write apparatus includes an optical device for directing a main scanning spot and a pair of satellite spots, one on either side of the main scanning spot, onto a recording. It further includes a wobbling device for moving the satellite spots in relation to the main scanning spot. The satellite spots are moved with an oscillatory motion in a direction perpendicular to tracks on the recording medium. A tracking control device detects light reflected from the satellite spots, generates a tracking error signal, and moves the main scanning spot according to the tracking error signal in a direction perpendicular to the. This keeps the main scanning spot accurately centered on a track without offset and without wobbling the main scanning spot.

REFERENCES:
patent: 4462095 (1984-07-01), Chen
patent: 4656618 (1987-04-01), Kaku et al.
patent: 4935913 (1990-06-01), Shinoda
"Principles of Optical Disc Systems," Bouwhuis et al., Adam Hilger Ltd., 1985.

Affiliated with

Also associated with

Rating

Optical read/write apparatus with improved tracking performance 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 read/write apparatus with improved tracking performance, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical read/write apparatus with improved tracking performance will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-352190