Optical recording medium and reproducing apparatus

Details Optical recording medium and reproducing apparatus Optical recording medium and reproducing apparatus

1988-01-15

1989-08-15

Stephan, Steven L.

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

369 15, 369 44, 369275, G11B 1110, G11B 700

Patent

active

048582182

ABSTRACT:
Apparatus for reproducing recorded information applies a linearly polarized light beam to a recording medium having first and second recorded information tracks. The recording medium is formed so that the intensity of reflected light relative to the incident light varies in accordance with the information recorded in one of the tracks, and the plane of polarization of the reflected light relative to the linearly polarized incident light varies in accordance with the information recorded in the other track. The reflected light is divided into two components having different planes of polarization. A recorded magnetooptic signal is reproduced from the difference in intensity between the two components, and a recorded light intensity signal is reproduced from at least one of the two components.

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patent: 4558440 (1985-12-01), Tomita
patent: 4561032 (1985-12-01), Matsumoto
patent: 4599714 (1986-07-01), Endo

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