Angularly multiplexed optical recording medium

Details Angularly multiplexed optical recording medium Angularly multiplexed optical recording medium

1981-12-10

1985-08-06

Richardson, Robert L.

Dynamic information storage or retrieval

Control of storage or retrieval operation by a control...

Mechanism control by the control signal

369109, 369111, 369119, 369275, 358342, G11B 700

Patent

active

045340218

ABSTRACT:
An apparatus for optically reading a recording medium having information tracks disposed on alternating inclined recording surfaces preferably arranged in separate but alternately interposed spirals inclined at different angles on the medium. The apparatus includes photodetectors for detecting light reflected from each of the tracks, and circuitry for controllably combining the signals from the photodetectors to minimize crosstalk in the recovered signals.

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"Patent Abstracts of Japan", vol. 5, No. 146 (P-80) (818), Sep. 16, 1981.
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"Electronics and Communications in Japan", vol. 60, No. 7, Jul. 1977, pp. 89-98.

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