The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 13, 2011
Filed:
Sep. 28, 2006
Yves Borlez, Heure-Le-Romain, BE;
Olivier Gillieaux, Blegny, BE;
Christian Leprince, Sprimont, BE;
BEA SA, Angleur, BE;
Abstract
The invention refers to a sensor () for presence detection, and a method for presence detection, in a detection area () comprising at least an image generator () for generating an image on a detection area () formed by illuminated structures reflecting from said detection area (), a detector () for detecting signals of the image reflected from the detection area (), an image processing unit () for comparing the signals based on the reflected and received image with signals of a reference image stored in storing means of the image processing unit (), wherein the image generator () generates a pattern () on the detection area () having illuminated and non-illuminated zones, the image processing unit () uses triangulation technique to detect changes of the pattern () within the detection area () over the reference image.