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:
Aug. 07, 2012
Filed:
Jun. 26, 2007
Sander Bernard Francis Van DE Wijdeven, Eindhoven, NL;
Tatiana Aleksandrovna Lashina, Eindhoven, NL;
Sander Bernard Francis Van De Wijdeven, Eindhoven, NL;
Tatiana Aleksandrovna Lashina, Eindhoven, NL;
Koninklijke Philips Electronics N.V., Eindhoven, NL;
Abstract
A method, device and computer program product for determining the material of an object based on its optical characteristics is disclosed. More specifically, the method operable on a touch screen that includes on its periphery a plurality of light sources (L, i=1 to N) and sensors (S, j=1 to M), comprises the steps of transmitting a light from each of the light sources to an object within the boundary of the touch screen, determining a distance from the object to each of the light sources and each of the sensors, detecting the presences of the transmitted light at each of the sensors, determining, at each of the sensors a reflective index, nof the object and determining the object material based on the determined reflective indices.