Optical disk having wobbled, discontinuous grooves

Details Optical disk having wobbled, discontinuous grooves Optical disk having wobbled, discontinuous grooves

1995-06-05

1996-07-23

Nelms, David C.

Dynamic information storage or retrieval

Storage medium structure

Optical track structure

369 4413, 369277, G11B 724

Patent

active

055397247

ABSTRACT:
A rotation of an optical disk can be controlled with high accuracy to thereby reduce a rotational jitter, whereby a buffer area between sectors can be reduced to increase a storage capacity of the optical disk. In an optical disk in which a track (3) defined by a groove (2) is formed on a rotational base plate and a recording pit (4) corresponding to information is formed on the track (3) in a multi-channel fashion, the groove (2) is formed as a pattern which is fine wobbled in the optical disk radiation direction shown by an arrow (r) and address information (9) of the track (3) is provided in the groove (2).

REFERENCES:
patent: 4364118 (1982-12-01), Maeda
patent: 4982398 (1991-01-01), Yamamoto
patent: 5084860 (1992-01-01), Maeda
patent: 5210733 (1993-05-01), Yamaguchi
patent: 5303216 (1994-04-01), Shinoda
patent: 5317553 (1994-05-01), Ohga

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