Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Patent
1985-11-27
1987-11-17
LaRoche, Eugene R.
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
235454, 235466, 235494, G06K 714, G06K 1906
Patent
active
047076127
ABSTRACT:
A three channel, binary coding technique, especially adapted for identifying intermittently, erratically, or continuously moving objects along a linear path (conveyor track, roadway, or the like). Three parallel channels of coded information are each provided with some type of photoelectric, electronic, or mechanical indicating means or indicia representative of one of two logic states, which logic states on each channel change during each successive segment or interval thereon. A change in the timing channel indicates to a sensing means that a new binary bit of intelligence is to be transmitted. The order in which the coding channels change during the succeeding segment then indicate whether the binary bit being generated is a ONE, a ZERO, or in the alternative whether the reading is erroneous or invalid.
REFERENCES:
patent: 4172554 (1979-10-01), Clarinval et al.
Blue Bell, Inc.
Garmon Judith E.
LaRoche Eugene R.
Mis David
Rhodes Charles R.
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