Patent ID: 6262718
Filing Date: 2001-07-17
Classification: G06F

Abstract:
A touch-sensitive display apparatus comprising:a display screen;a display drive means connected to said display screen for displaying an image within a display area of said display screen in response to an input video signal;a display processor connected to said display drive means for generating, in response to one or more image control signals, at least one drive control signal for configuring said display drive means to adjust a parameter of said display area such that a selected portion of said display area has a different position relative to said display screen than said selected portion of said display area had when said touch-sensitive display apparatus was last calibrated;a touch sensing means for generating a touch input signal in response to a tactile stimulus of said display screen, said touch input signal being indicative of a location of said tactile stimulus on said display screen;a touch processor connected to said touch sensing means for converting, utilizing calibration data stored in a touch memory, said touch input signal into coordinates defining said location of said tactile stimulus on said display screen relative to features in said image displayed within said display area of said display screen;wherein said display processor includes means for communicating correction data to said touch processor indicative of said different position of said selected portion of said display area relative to said display screen, and said touch processor includes means for automatically adjusting said calibration data stored in said touch memory to re-align said coordinates generated by said touch processor to features of said image in response to said correction data received from said display processor.