Transmissive data storage media and an optical head using hologr

Details Transmissive data storage media and an optical head using hologr Transmissive data storage media and an optical head using hologr

1998-01-05

1999-04-13

Hindi, Nabil

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

369 4412, 369 4421, G11B 700

Patent

active

058944656

ABSTRACT:
An optical data storage system includes an optical data storage system for use with a data storage medium. The system includes a stationary optical head for steering an incident laser beam holographically and/or by means of an acousto-optical method across the data storage medium. The incident laser beam is selectively reflected by the data storage medium to indicate the type of data bits recorded on the storage medium. In a preferred embodiment the optical head includes a laser source for irradiating a collimated laser beam, a beam steering element for steering the laser beam; a beam splitter for deflecting the reflected laser beam; and a photo-detector for detecting the relative intensity of the deflected laser beam for determining the type of recorded data bits. The data storage system may be optically transmissive or partly transmissive.

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