Redundant optical recording of information in different formats

Details Redundant optical recording of information in different formats Redundant optical recording of information in different formats

1985-04-09

1987-12-08

Trafton, David L.

Registers

Coded record sensors

Particular sensor structure

235454, 235487, 283 75, 283904, 346 76L, G06K 710

Patent

active

047119969

ABSTRACT:
Information is recorded in situ on a wallet-size card by disposing laser recordable material in the card, then recording indicia, in situ, on the material with a laser. At least some of the indicia are microscopic eye readable information, with the rest being machine readable information, with the eye readable information being redundant with at least some of the machine readable information. This visually read information is recorded as characters made up of matrices of nonconnected laser recorded spots. The characters may be alphanumeric characters, or the like. The characters are read with an optical magnifier. A laser beam and light detector may be used to read the digital information by scanning the card with the beam.

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