Apparatus and method for monitoring hand propinquity to...

Details Apparatus and method for monitoring hand propinquity to... Apparatus and method for monitoring hand propinquity to...

2007-09-11

2007-09-11

Wu, Daniel (Department: 2612)

Communications: electrical

Condition responsive indicating system

Specific condition

C340S555000, C340S556000, C340S568100, C700S213000

Reexamination Certificate

active

11669948

ABSTRACT:
Apparatus for monitoring hand propinquity to plural adjacent item locations arranged in a generally two-dimensional array including an illuminator, disposed adjacent a first edge of the two-dimensional array and generating radiation which illuminates a generally planar imaginary curtain disposed in front of the plural adjacent item locations, at least one detector, disposed adjacent the first edge of the array and sensing the radiation reflected from a hand traversing the imaginary curtain generally at any location on the curtain and location determination circuitry responsive to at least one output of the at least one detector for associating a sensed position of the hand with respect to one of the plural adjacent item locations.

REFERENCES:
patent: 6275152 (2001-08-01), Speas et al.
patent: 6362468 (2002-03-01), Murakami et al.
patent: 6570103 (2003-05-01), Saka et al.
patent: 6753776 (2004-06-01), Drinkard
patent: 7067794 (2006-06-01), Le Gallo et al.

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