Multi-track optical read/write head

Details Multi-track optical read/write head Multi-track optical read/write head

1996-12-09

1998-09-01

Dinh, Tan

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

369 97, 369112, G11B 700

Patent

active

058020349

ABSTRACT:
A multi-track optical read/write head uses a light valve to split the beam from a single laser diode to a large number of channels, recorded on an optical disc or tape. Readout is achieved by line illumination and a linear array of detectors. The number of channels in the light valve exceeds the number of recorded tracks and a single light valve channel is smaller than the optical resolution of the system. The division into a large number of channels allows to modulate the width of the written mark in order to achieve increased data recording density.

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patent: 4577932 (1986-03-01), Gelbart
patent: 5081617 (1992-01-01), Gelbart
patent: 5128693 (1992-07-01), Tatemichi et al.
patent: 5198920 (1993-03-01), Gobeli et al.
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patent: 5311360 (1994-05-01), Bloom et al.
patent: 5321683 (1994-06-01), Olezak
patent: 5339305 (1994-08-01), Curtis et al.
patent: 5561654 (1996-10-01), Hamilton et al.
Optical Tape Recorder Brochure (from 1991), no month available.
Optical Tape Recorder Service Manual (from 1992) (section about topics and autofocus) no month available.

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