Optical recording media

Details Optical recording media Optical recording media

1996-08-14

1997-12-09

Hindi, Nabil

Dynamic information storage or retrieval

Storage medium structure

Optical track structure

G11B 370

Patent

active

056967586

ABSTRACT:
Provided is an optical recording medium in which per-pits in a ROM area have a depth of 250 nm or more and 350 nm or less; pre-grooves between the pre-pits have a depth of 30 nm or more and 170 nm or less; wobbling tracks have an amplitude of 25 nm or more and 110 nm or less; the product of the depth of the pre-grooves between the pits and the wobble amplitude of the track is 3100 or more; and pre-grooves in a RAM area have a depth of 130 nm or more and 250 nm or less. The optical recording medium is a hybrid disk having such good signal characteristics as satisfying the Orange Book standards.

REFERENCES:
patent: 5124067 (1992-06-01), Itoh et al.
patent: 5170296 (1992-12-01), Fiberger
patent: 5204852 (1993-04-01), Nakagawa et al.
patent: 5270623 (1993-12-01), Ohta et al.
patent: 5343454 (1994-08-01), Watanabe et al.
Nikkei Electronics, "Write-Once Optical Disc Satisfying the CD Standard, Recorded by Thermal Deformation at the Interface of a Substrate and a Dye Layer", No. 465, p. 107 (Jan. 2989) together with translation.
Emiko Hamada et al, Optical Data Storage 1989 Technical Digest Series, "That's CD-R", vol. 1, pp. 45-48, Jan. 1989.

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