Optical recording medium and reproducing method and apparatus ha

Details Optical recording medium and reproducing method and apparatus ha Optical recording medium and reproducing method and apparatus ha

1996-05-13

1999-04-06

Huber, Paul W.

Dynamic information storage or retrieval

Storage medium structure

Optical track structure

G11B 370

Patent

active

058927522

ABSTRACT:
The invention provides an optical recording medium, in which data is recording in both a land portion and a groove portion, which can always provide an accurate tracking error signal. In the optical recording medium, pre-pits for pre-format or ID data are formed in an area occupying one part of the groove portion in a transverse direction and in the other area in the transverse direction.

REFERENCES:
patent: 4996682 (1991-02-01), Yanagihara et al.
patent: 5508995 (1996-04-01), Moriya et al.
patent: 5508996 (1996-04-01), Endoh
patent: 5638354 (1997-06-01), Nakayama et al.

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