Optical information recording and reproducing apparatus

Details Optical information recording and reproducing apparatus Optical information recording and reproducing apparatus

1988-04-06

1990-06-19

Stephan, Steven L.

Dynamic information storage or retrieval

Condition indicating, monitoring, or testing

Including radiation storage or retrieval

369 32, 369 4411, 369109, 369122, G11B 2112, G11B 382, G11B 700

Patent

active

049359134

ABSTRACT:
An optical information recording and reproducing apparatus which radiates a plurality of beams onto an information recording medium to optically record information on the medium as well as reproduce the information just recorded. The apparatus includes a beam generator for radiating a plurality of beams of the same wavelength; an optical system for radiating the plurality of beams onto the information recording medium in such a manner that spots formed by the beams are arranged in the direction in which the information is being recorded, and for extracting the plurality of beams reflected by the information recording medium; and an optical detector for detecting each of the plurality of beams after they have been extracted by the optical system.

REFERENCES:
patent: 4298974 (1981-11-01), Tsunoda et al.
patent: 4546463 (1985-10-01), Opheij et al.
patent: 4547872 (1985-10-01), Henmi et al.
patent: 4712207 (1987-12-01), Reno
patent: 4754446 (1988-06-01), Reno
Hamada et al, "Two-Beam Optical Head" SPIE vol. 695, Optical Mass Storage II (1986), pp. 182-186.
"Principles of Optical Disc Systems", Adam Hilger Ltd. pp. 260-267.

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