A system for controlling a dispensing apparatus having a dispensing outlet includes a first illumination source having a first field of illumination, a second illumination source having a second field of illumination, at least one optical sensor, and a control circuit. The control circuit is responsive...http://www.google.fr/patents/US5862844?utm_source=gb-gplus-shareBrevet US5862844 - Methods and systems for controlling a dispensing apparatus
Methods and systems for controlling a dispensing apparatus
