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. 06, 2011
Filed:
May. 31, 2009
Applicant:
Chen Zhang, Beijing, CN;
Inventor:
Chen Zhang, Beijing, CN;
Assignees:
Vimicro Corporation, Beijing, CN;
Wuxi Vimicro Corporation, Jiangsu, CN;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G06F 3/045 (2006.01);
U.S. Cl.
CPC ...
Abstract
Techniques for detecting multiple touch points for touch screens are disclosed. A touch screen includes a first conductive layer and a second conductive layer, each conductive layer having a positive terminal and a negative terminal. Efficient operations of detecting multiple points on the touch screen are described using various voltage/currents differences from the positive and negative terminals of the first and second conductive layers.