Information recording medium and method of recording or reproduc

Details Information recording medium and method of recording or reproduc Information recording medium and method of recording or reproduc

1994-09-07

1996-05-14

Nguyen, Tan T.

Dynamic information storage or retrieval

Storage medium structure

Specific disc profile

3692754, 369277, G11B 370

Patent

active

055174868

ABSTRACT:
An information recording medium including a disc-shaped substrate and a recording layer for optically recording and reproducing information with a laser beam where the recording layer is disposed on the substrate. The surface of the substrate is provided with a tracking guide including grooves having a depth of 200 to 600 angstroms and a width of 0.3 to 0.6 .mu.m. A method of optically recording information and a method of optically reproducing recorded information using the information recording medium are also disclosed.

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patent: 4877667 (1989-10-01), Hattori et al.
patent: 4965153 (1990-10-01), Imataki et al.
Bulthuis et al. (Bulthuis), IEEE Spectrum, "Ten billion bits on a disk," Aug. 1979, pp.26-33.

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