Increasing storage density of optical data media by detecting a

Details Increasing storage density of optical data media by detecting a Increasing storage density of optical data media by detecting a

1990-06-29

1993-09-21

Dzierzynski, Paul M.

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

369112, 369 4423, G11B 712

Patent

active

052475107

ABSTRACT:
A light detection apparatus includes at least one re-imaging lens that re-images a light beam reflected from an optical storage medium, to form an image of a light spot formed by the light beam on the storage medium. At least one detector detects a selected portion of the image The selected portion of the image contains only such information as is encoded on a region of the optical data storage medium that is illuminated by a corresponding portion of the light spot.

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Patent Abstracts of Japan, vol. 12, No. 477 (P-800)[3324], Dec. 14, 1988 (Japanese patent abstract JP-A-63 193 356).

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