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:
Jul. 17, 2001
Filed:
Dec. 16, 1994
Valerie McLaren Findlay, Glasgow, GB;
Andrew Knox, Kilbirnie, GB;
International Business Machines Corporation, Armonk, NY (US);
Abstract
A touch-sensitive display apparatus is disclosed, which includes a display screen. A display drive means is connected to the display screen for generating an image on the display screen in response to an input video signal. A display processor is connected to the display drive means for generating, in response to one or more image control signals, at least one drive control signal for configuring the display drive means to move the displayed image relative to the display screen. Touch sensing means generates a touch input signal in response to a tactile stimulus of the display screen. The touch input signal is indicative of the location of the tactile stimulus on the touch screen. A touch processor is connected to the touch sensing means for converting, in dependence on calibration data stored in a touch memory, the touch input signal into coordinates defining the location of the tactile stimulus on the display screen relative to features in the image displayed on the display screen. The display processor includes means for communicating correction data indicative of movement of the displayed image relative to the display screen to the touch processor. Touch processor comprises means for automatically adjusting the calibration data stored in the touch memory to re-align the coordinates generated by the touch processor to features in the displayed image in response to the correction data received from the display processor.