Optical recording medium having a plurality of recorded pits of

Details Optical recording medium having a plurality of recorded pits of Optical recording medium having a plurality of recorded pits of

1997-02-14

1999-04-20

Dinh, Tan

Dynamic information storage or retrieval

Storage medium structure

Optical track structure

3692751, G11B 724

Patent

active

058963669

ABSTRACT:
A method is provided for achieving high density in an optical playback medium, without relying on a reduction in size of a recorded feature. In this method, the optical playback medium has a substrate that has a substrate surface, a magnetic film formed on that substrate surface and having a magnetic film surface, and has a plurality of recording pits which are formed on either the substrate surface or on the magnetic film surface, these pits being depressions and protrusions.

REFERENCES:
patent: 5559787 (1996-09-01), Nomoto
patent: 5572508 (1996-11-01), Satoh et al.
patent: 5602824 (1997-02-01), Ooki et al.
patent: 5602825 (1997-02-01), Sugaya et al.
patent: 5623478 (1997-04-01), Horimai
patent: 5724339 (1998-03-01), Ogawa

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