Dynamic information storage or retrieval – Storage medium structure – Optical track structure
Patent
1999-01-25
1999-12-28
Neyzari, Ali
Dynamic information storage or retrieval
Storage medium structure
Optical track structure
3692753, G11B 724
Patent
active
060090723
ABSTRACT:
An optical disc player for reproducing an optical disc having a pit width of 0.2-0.35 .mu.m, a pit depth of 100-120 nm, and a track pitch of 0.7-0.85 .mu.m. The optical disc player includes a semiconductor laser having a wavelength of 590-670 .mu.m and a laser beam projector which projects the laser beam from the laser onto the optical disc with a spot of a predetermined diameter.
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Ichiura Shuichi
Ito Toshio
Kano Yasuyuki
Kato Seizo
Ota Osamu
Neyzari Ali
Sanyo Electric Co,. Ltd.
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