Multi-layered optical disk with track and layer identification

Details Multi-layered optical disk with track and layer identification Multi-layered optical disk with track and layer identification

1990-10-11

1994-04-12

Nguyen, Hoa T.

Dynamic information storage or retrieval

Storage medium structure

Optical track structure

3692751, G11B 724, G11B 2340, G11B 2342

Patent

active

053032250

ABSTRACT:
A multi-layered optical disk comprising a plurality of recording layers accumulated in the thickness direction wherein a light beam is focused on one of tracks of one of the layers thereby to record and reproduce data, the optical disk being characterized in that recording layers each have an identification section storing an address of the recording layer which the identification section belongs to.

REFERENCES:
patent: 4219704 (1980-08-01), Russell
patent: 4451915 (1984-05-01), LaBudde et al.
patent: 4535439 (1985-08-01), Satoh et al.
patent: 4612587 (1986-09-01), Kaneko et al.
patent: 4688203 (1987-08-01), Koishi et al.
patent: 4956243 (1990-09-01), Miyake et al.
patent: 5051970 (1991-09-01), Ishii et al.
Koshino et al, "Optical Method of the Head Positioning in Magnetic Disk Systems", IEEE Transactions on Magnetics vol. MAG. 16, No. 5 (Sep. 1980) pp. 631-633.
Japanese Laid-Open Patent Application No. 63-50918, abstract.

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