Optical disk having narrow and wide guide grooves

Details Optical disk having narrow and wide guide grooves Optical disk having narrow and wide guide grooves

1988-04-12

1990-08-07

Psitos, Aristotelis M.

Dynamic information storage or retrieval

Storage medium structure

Special groove

3692751, 369100, 369109, 369111, G11B 372

Patent

active

049473840

ABSTRACT:
An optical disk of the type including guide grooves is improved by regulating the width of the grooves, and thus the width of the adjacent land portion, in accordance with the type of information recorded at that part of the land.

REFERENCES:
patent: 4494226 (1985-01-01), Hazel et al.
patent: 4517668 (1985-05-01), Takaoka et al.
patent: 4587648 (1986-05-01), Ando
patent: 4716560 (1987-12-01), Itonaga
patent: 4748609 (1988-05-01), Yonezawa et al.

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