Wide beam detector system for optical memories

Details Wide beam detector system for optical memories Wide beam detector system for optical memories

1991-12-24

1993-08-17

Envall, Jr., Roy N.

Dynamic information storage or retrieval

Systems having plural physically distinct independent tracks...

Continuous consecutive storage or retrieval of interrupted...

369 4413, 369 4423, 369 4442, 369112, 369119, G11B 7007, G11B 378

Patent

active

052375560

ABSTRACT:
The present invention relates to a method and apparatus for high speed reading of multiple data tracks stored on an optical recording medium, such as a flexible optical tape. Data can be accurately read in the presence of position and alignment errors illuminating plural tracks of the optical recorded medium with an expanded light beam.

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patent: 4321622 (1982-03-01), Jerome et al.
patent: 4449212 (1984-05-01), Reno
patent: 4466087 (1984-08-01), Cheng
patent: 4767921 (1988-08-01), Kawasaki et al.
patent: 4931628 (1990-06-01), Wada
patent: 5081617 (1992-01-01), Gelbart
T. Ishida et al., "High Speed Optical Card Reader/Writer Using Two Optical Sources", 1989, pp. 4-265.

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