Transmissively read quad density optical data system

Details Transmissively read quad density optical data system Transmissively read quad density optical data system

1986-10-31

1988-11-22

Trafton, David L.

Registers

Coded record sensors

Particular sensor structure

235454, 235494, 250569, 369 46, G06K 710

Patent

active

047867922

ABSTRACT:
An optical data storage and retrieval system using a length of optical recording material in which data in the form of microscopic spots is disposed in cells forming a regularly spaced grid. While the material is being moved in a lengthwise direction by a transport, rows of cells are being read by a linear CCD array, one row at a time. A servo system advances the material so that successive rows can be read, while a second servo adjusts the position of the material in the crosswise direction for proper alignment with the CCD array.

REFERENCES:
patent: 3660641 (1972-05-01), Levasseur
patent: 4105926 (1978-08-01), Reno et al.
patent: 4254329 (1981-03-01), Gokey et al.
patent: 4263504 (1981-04-01), Thomas
patent: 4695991 (1987-09-01), Hudson
"Laser Optical System of the IBM 3800 Printer", IBM Journal of Research & Development, vol. 21, No. 5, Sep. 1977.

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