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:
Jun. 21, 2011
Filed:
Mar. 14, 2007
Ing-yih Wang, Tucson, AZ (US);
Ing-Yih Wang, Tucson, AZ (US);
Texas Instruments Incorporated, Dallas, TX (US);
Abstract
A touch screen controller (A) includes circuitry (B) for generating a pen touch detection signal (PENTOUCH) having a first level if a touch point (Q) of a touch screen assembly () including first () and second () resistive screens is detected, and generating a second level of the pen touch detection signal if a touch point is not detected. A controller (A) includes circuitry (A) that generates an interrupt signal (IRQ) to be sent to a host processor () in response to the first level of the pen touch detection signal and for resetting the interrupt signal (IRQ) in response to the second level of the pen touch detection signal if the second level is received before a convert command is received from the host processor. The interrupt signal (IRQ) represents an interrupt service request for a convert command from the host processor (). Resetting of the interrupt signal (IRQ) has the effect of canceling the interrupt service request.