Electrically settable escort memory

Details Electrically settable escort memory Electrically settable escort memory

1982-07-01

1985-07-23

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

250223R, G06K 710

Patent

active

045310610

ABSTRACT:
This invention describes a code system using a plurality of liquid crystal and other optical codes particularly suited to sorting conveyors. The codes are preferably (but not necessarily) of the binary type and form a set of indicia to accompany each article to be sorted. The code can be set and reset remotely either by a beam of light or by other non-mechanical means. Recognition of a particular code is detected by an optical detector.

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