Optical disc having pits in multiple regions and signal processi

Details Optical disc having pits in multiple regions and signal processi Optical disc having pits in multiple regions and signal processi

1995-03-13

1997-08-12

Dinh, Tan

Dynamic information storage or retrieval

Storage medium structure

Optical track structure

3692754, G11B 724

Patent

active

056573120

ABSTRACT:
An optical disc includes: reference signal region formed on the optical disc over a plurality of spirally turned recording tracks in radial direction of the optical disc, each of the recording tracks in the reference signal region including: first region on which a plurality of first pit portion having first period are formed; and second region on which at least a second pit portion having second period is formed, each of the second pit portions being positioned out of alignment with the second pit portions on neighboring tracks.

REFERENCES:
patent: 5280466 (1994-01-01), Tomita
patent: 5321675 (1994-06-01), Ito et al.
patent: 5404345 (1995-04-01), Taki
patent: 5416766 (1995-05-01), Horimai
patent: 5495460 (1996-02-01), Haraguchi et al.
patent: 5508995 (1996-04-01), Moriya et al.
patent: 5517485 (1996-05-01), Nishiuchi et al.

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