Information recording medium with pits edges shifted in a step-w

Details Information recording medium with pits edges shifted in a step-w Information recording medium with pits edges shifted in a step-w

1996-05-13

1998-09-15

Young, W. R.

Dynamic information storage or retrieval

Storage medium structure

Optical track structure

369 48, 369 59, 3692754, G11B 700

Patent

active

058090045

ABSTRACT:
In an information recording medium from which information recorded on each pit is reproduced by an optical detection system that obtains a reproduced signal corresponding to each pit by scanning the information recording medium along pit rows by a light beam, data of high recording density can be accurately reproduced by a simple arrangement by shifting in a step-wise fashion edge positions of an information pit from a predetermined reference position in response to digital information to be recorded within a range corresponding to a predetermined shift period smaller than a transition period of a reproduced signal determined in response to a transfer characteristic of the optical detection system. Therefore, a nonlinear intersymbol interference can be reduced without emphasizing a noise component.

REFERENCES:
patent: 4809251 (1989-02-01), Collomby et al.
patent: 4873680 (1989-10-01), Chung et al.
patent: 4932017 (1990-06-01), Van Vijen
patent: 5206853 (1993-04-01), Tanaka
patent: 5233589 (1993-08-01), Saito et al.
patent: 5282185 (1994-01-01), Mori et al.
patent: 5321680 (1994-06-01), Bailey
patent: 5347505 (1994-09-01), Moritsugu et al.
patent: 5414689 (1995-05-01), Maeda et al.
patent: 5418770 (1995-05-01), Ide et al.
patent: 5524103 (1996-06-01), Shimizu et al.
Rosenberg, Computers, Information Processing & Telecommunications, 2nd Ed., pp. 498-499, 1987.
Patent Abstracts of Japan, vol. 17, No. 242, p. 1535, May 14, 1993, v & JP4-366,426.

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