Optical recording medium having pre-formatted patterns arrange b

Details Optical recording medium having pre-formatted patterns arrange b Optical recording medium having pre-formatted patterns arrange b

1994-07-27

1997-02-11

Dinh, Tan

Dynamic information storage or retrieval

Storage medium structure

Optical track structure

3692754, G11B 724

Patent

active

056028237

ABSTRACT:
Optical information recording medium in which, information of a data format constructed by an ID section and a data section can be recorded and regenerated from both regions of a land portion and a groove portion formed on a disk face. Information such as an address is recorded to the ID section as a format by a PPM recording system when information is recorded to the data section by a PWM recording system. The information recording medium may have a land portion and a groove portion formed in a spiral or concentric shape. A land mark may be formed in a position information section of the land portion and constructed by a pit recorded as position information, and a groove mark may be formed in a position information section of the groove portion. The groove mark may be constructed using an interrupting portion between grooves and recorded as independent position information different from the position information of the land portion.

REFERENCES:
patent: 5353277 (1994-10-01), Yasuda et al.
patent: 5452272 (1995-09-01), Murakami et al.
patent: 5452284 (1995-09-01), Miyagawa et al.
patent: 5508995 (1996-04-01), Moriya et al.
K. Kayanuma et al., "High Track Density Magneto-Optical Recording Using a Crosstalk Canceler", Proceedings of Optical Data Storage '90, pp. 18-21, 1990.

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