Optical disk recording and readout system having read, write and

Details Optical disk recording and readout system having read, write and Optical disk recording and readout system having read, write and

1984-07-06

1988-06-21

Faber, Alan

Dynamic information storage or retrieval

Information location or remote operator actuated control

Selective addressing of storage medium

369 44, 369110, 369111, 369112, 369 45, 369 46, G11B 7095

Patent

active

047529229

ABSTRACT:
An optical system for writing and reading data from a rotating optical storage disk, comprising a first, second and third coherent light source, providing coarse seek, reading, and writing functions, the three writing sources sharing a plurality of optical elements in common, all cooperating to provide for the coarse seek, fine seek, focus and tracking functions of the device. The read and the write optical beams are optically coupled together to ensure proper spacing of a newly written track with regard to the previously written track.

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