Patent ID: 7327353
Filing Date: 2008-02-05
Classification: G06F,H04N

Abstract:
1. A computer system, comprising: a screen for displaying images; a central processing unit (CPU) for controlling the operation of the computer system; an on-screen display (OSD) circuit electrically connected to the CPU and the screen, for controlling the screen to display a plurality of test marks according to a plurality of predetermined coordinate values; a touch panel installed parallel to the display face of the screen, for generating a plurality of test sensing signals according to positions at which it is triggered; a display drive circuit electrically connected to the CPU and the OSD circuit for generating video drive signals to drive the screen, wherein the OSD circuit controls the video drive signals to drive the screen to display the test marks; and a control circuit electrically connected to the touch panel and the CPU, for calibrating the coordinate values converted by the control circuit from the sensing signals generated by triggering the touch panel, according to the predetermined coordinate values and the test sensing signals.