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:
Sep. 20, 2005
Filed:
Mar. 11, 2003
Gerald D. Morrison, Calgary, CA;
Randy Mccharles, Calgary, CA;
Scott Yu Tseng Su, Calgary, CA;
Manvinder Singh, Calgary, CA;
Gerald D. Morrison, Calgary, CA;
Randy McCharles, Calgary, CA;
Scott Yu Tseng Su, Calgary, CA;
Manvinder Singh, Calgary, CA;
Smart Technologies Inc., , CA;
Abstract
A system and method for determining pointer contacts on a touch surface includes a touch surface to be contacted by a pointer. At least one imaging device having a field of view looks generally along the touch surface. At least one processor communicates with the at least one imaging device and analyzes images acquired by the at least one imaging device to detect the relative positions of a pointer and a reflection of the pointer therein and thereby determine if a pointer contact with the touch surface has been made.