Optical recording and reproducing method and apparatus...

Details Optical recording and reproducing method and apparatus... Optical recording and reproducing method and apparatus...

2006-08-15

2006-08-15

Tran, Thang V. (Department: 2627)

Dynamic information storage or retrieval

Systems having plural physically distinct independent tracks...

Having layered storage medium

C369S275200, C369S283000

Reexamination Certificate

active

07092343

ABSTRACT:
An optical recording medium having two or more information recording layers in which information is recorded at a high recording density. The optical recording medium is comprised of information recording layers between a first surface at which light is incident and a second surface opposite the first surface. The first information recording layer nearest to the second surface is a phase-modulation information recording layer, and the second information recording layer is a reflectance-modulation information recording layer.

REFERENCES:
patent: 6141299 (2000-10-01), Utsumi
patent: 2001/0016242 (2001-08-01), Miuamoto
patent: 2002/0001691 (2002-01-01), Sabi et al.
patent: 1336655 (2002-02-01), None
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patent: 2001-101709 (2001-04-01), None
patent: 2001-209974 (2001-08-01), None
patent: 2001-266402 (2001-09-01), None
patent: 2001-273672 (2001-10-01), None
Suzuki Katsumi, Single-Sided Two Layered Optical Disk, Sep. 28, 2001, Machine Translatrion Patent Abstracts of Japan.

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