Information storage medium and information reproducing apparatus

Details Information storage medium and information reproducing apparatus Information storage medium and information reproducing apparatus

1998-03-27

1999-08-24

Neyzari, Ali

Dynamic information storage or retrieval

Storage medium structure

Optical track structure

3692751, 369 4413, G11B 724

Patent

active

059433132

ABSTRACT:
An information storage medium, which is manufactured with high yield and is little influenced by a reproducing apparatus, and an information reproducing apparatus capable of performing stable information reproduction. The information storage medium has a pre-groove with a groove-like, continuous projection-and-recess shape and a pre-pit with an intermittent projection-and-recess shape. A level difference (depth or height) of the projection and recess of the pre-pit is substantially equal to that of the pre-groove. Each of the pre-pit and pregroove has a recording surface wobbling along a predetermined curved line. A reproduction signal from the information storage medium having the recording surface can be obtained by at least one pair of a preamplifier and a digitizing circuit.

REFERENCES:
patent: 4858218 (1989-08-01), Takagi et al.
patent: 5144552 (1992-09-01), Abe
patent: 5210738 (1993-05-01), Iwata et al.
patent: 5493552 (1996-02-01), Kobori
patent: 5537373 (1996-07-01), Horikiri

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