Capacitive label reader

Details Capacitive label reader Capacitive label reader

1983-07-15

1985-11-12

Pitts, Harold I.

Registers

Coded record sensors

Particular sensor structure

235462, 235492, 235494, G06K 708

Patent

active

045530262

ABSTRACT:
A capacitive label reader includes an outer ring transmitting portion, an inner ring transmitting portion, and a plurality of insulated receiving portions. A label is the mirror-image of the reader except that identifying portions corresponding to the receiving portions are insulated from only one of two coupling elements. Positive and negative pulses applied, respectively, to the two transmitting rings biased a CMOS shift register positively to either a 1 or 0 condition. The output of the CMOS may be read as an indication of the label.

REFERENCES:
patent: 2964734 (1960-12-01), West

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