Optical memory device and system

Details Optical memory device and system Optical memory device and system

1986-07-10

1989-05-30

Stephan, Steven L.

Dynamic information storage or retrieval

Storage medium structure

360 27, 369 47, 369 93, 369 95, G11B 724, G11B 2300, G11B 2504

Patent

active

048357626

ABSTRACT:
In the optical memory device of this invention, an annular information recording area is formed on one surface of a disc-shaped subplate which is rotatable about a center hole. Information is recorded on, or read from, the circular or spiral track of the information recording area, the track being centered on the center hole. On the same surface of the subplate is formed a position signal area of the same material as that of the information recording area, but at a different position from the information recording area. As the device is rotated, the time when the position signal area passes a given point may be detected and used as a reference, so that the location within the track of recording or reproducing information can be determined.

REFERENCES:
patent: 3198880 (1965-08-01), Loulon
patent: 3366733 (1968-01-01), Frohlock
patent: 3610722 (1971-10-01), Bestenreiner
patent: 3701846 (1972-10-01), Zenzefilis
patent: 3819281 (1974-06-01), Hogue
patent: 3855426 (1974-12-01), Bouwhuis
patent: 3894179 (1975-07-01), Jacobs
patent: 3931459 (1976-01-01), Korpel
patent: 3962688 (1976-06-01), Westerberg
patent: 4272574 (1981-06-01), Lippits
patent: 4278758 (1981-07-01), Drexler
patent: 4418365 (1983-11-01), Camras

Affiliated with

Also associated with

Rating

Optical memory device and system 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 memory device and system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical memory device and system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2159155