Optical having index mark and sector mark

Details Optical having index mark and sector mark Optical having index mark and sector mark

1982-11-24

1985-08-13

Psitos, Aristotelis M.

Dynamic information storage or retrieval

Storage medium structure

Optical track structure

369 32, 369 44, G11B 724, G11B 1722, G11B 700

Patent

active

045354391

ABSTRACT:
The disclosure is directed to an optical recording and reproducing disc in which each track circumference of guide tracks formed into a concentric or spiral configuration is divided into a plurality of sectors for selective recording and reproduction of information in any desired sectors. Sector separating zones of predetermined configuration are provided at starting portions of the respective sectors, while predetermined sector marks indicating the sector separating zones are formed on an index track provided at an outer or inner periphery of the disc in positions corresponding to the sector separating zones so that, during selection of the sectors at recording and reproduction, reproduction signals by the sector marks are used for selection of the sectors, while starting of the recording and reproduction is effected by the reproduced information of the sector separating zones.

REFERENCES:
patent: 4245247 (1981-01-01), Fike et al.
patent: 4321635 (1982-03-01), Tsuyuguchi
patent: 4325135 (1982-04-01), Dil et al.

Affiliated with

Also associated with

Rating

Optical having index mark and sector mark 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 having index mark and sector mark, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical having index mark and sector mark will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2322624