Dynamic information storage or retrieval – Storage medium structure – Optical track structure
Patent
1994-11-22
1996-03-19
Epps, Georgia Y.
Dynamic information storage or retrieval
Storage medium structure
Optical track structure
430321, G11B 724
Patent
active
055008500
ABSTRACT:
An optical disk for use in an optical memory device having guide grooves and pits on one surface thereof, wherein the depth of the guide grooves is different from that of the pits and the distance from the bottom face of each of the guide grooves to the other surface of the optical disk opposite to the one surface of the optical disk on which the guide grooves and pits are disposed is the same as the distance from the bottom face of each of the pits to the other surface of the optical disk opposite to the one surface of the optical disk on which the guide grooves and pits are disposed, and a method for the production of optical memory master plates that are used for the production of the above-mentioned optical disk.
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patent: 4587648 (1986-05-01), Ando
patent: 4734904 (1988-03-01), Imanaka et al.
patent: 5060223 (1991-10-01), Segawa
patent: 5144552 (1992-09-01), Abe
patent: 5353277 (1994-10-01), Yasuda et al.
patent: 5399461 (1995-03-01), Van et al.
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English Abstract of Japanese Document 61-29635A, Dec. 1986.
Inui Tetsuya
Nagaura Toshikazu
Ohta Kenji
Takemori Hirotoshi
Toki Hirotaka
Dinh Tan
Epps Georgia Y.
Sharp Kabushiki Kaisha
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