Electronic graphic detecting head

Details Electronic graphic detecting head Electronic graphic detecting head

1985-03-07

1987-06-16

Pitts, Harold I.

Registers

Coded record sensors

Particular sensor structure

235462, 235470, 235472, G06K 710

Patent

active

046738045

ABSTRACT:
Electronic graphic detecting head includes lamps for lighting a zone in which the said graphics may be presented, lenses for focusing on a detecting means designed to convert light signals into electric analogue signals and circuitry designed to supply a digital conversion of the said analogue signals. The main characteristic of the said electronic head consists in a first threshold-generating block designed to supply a comparator block with a first signal depending on the reflection of a support (3) bearing the said graphics, and a second block for intensifying the difference in value of the said analogue signal from successively-scanning elements on the said detecting means and designed to supply a second signal to the comparator block which supplies a third digital output signal representing the said graphics.

REFERENCES:
patent: 3801775 (1974-04-01), Acker
patent: 4160156 (1979-07-01), Sherer
patent: 4323772 (1982-04-01), Serge
patent: 4411016 (1983-10-01), Wakeland
patent: 4465926 (1984-08-01), Apitz

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