Optical disk capable of recording information on both groove and

Details Optical disk capable of recording information on both groove and Optical disk capable of recording information on both groove and

1994-07-15

1996-04-16

Epps, Georgia Y.

Dynamic information storage or retrieval

Storage medium structure

Optical track structure

3692753, G11B 724

Patent

active

055089950

ABSTRACT:
An optical recording medium includes a groove track and a land track provided on a resin substrate. Each of the tracks is divided into a plurality of sectors for every turn. Each sector has an ID region, a servo region, and an information region. A pit in the ID region is formed so as to span across both the groove track and the land track. The first wobble pit and the second wobble pit are provided on both sides of the center line of each track, and they are spaced with each other in the direction of the track. Thus, since a larger width of the pit can be provided, production of the optical recording medium can be facilitated. Moreover, since the center of the track can be detected accurately by the first and second wobble pits, accurate tracking control can be performed.

REFERENCES:
patent: 4748609 (1988-05-01), Yonezawa et al.
patent: 4949332 (1990-08-01), Veenis et al.
patent: 4964094 (1990-10-01), Satoh et al.
patent: 5038339 (1991-08-01), Pasman et al.
patent: 5210738 (1993-05-01), Iwata et al.
patent: 5270998 (1993-12-01), Uchiumi
patent: 5383176 (1995-01-01), Inui et al.

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