Patent ID: 7199787
Filing Date: 2007-04-03
Classification: G06F,G09G

Abstract:
1. An apparatus having a touch screen including a touch pad, comprising: a connector for connecting the apparatus to an external display device; a sensor for generating a sensing signal upon detecting a connection between the apparatus and the external display device; a touch screen display driver for displaying data input from the touch pad on the touch screen; an external display driver for displaying touch pad data on the external display device and; and a controller for, upon receiving the sensing signal, setting a mouse pad operation mode where data input from the touch pad of the touch screen are displayed only on the external display device, not on the touch screen, enabling the external display driver, and setting a screen shift access mode by a specific key input from a user for changing a size of a screen to be displayed at a specific ratio in the mouse pad operation mode, wherein the controller recognizes a point on the touch pad selected by the user, generates a coordinate value corresponding to the point, calculates for mapping the coordinate value with a screen display coordinate of the external display device according to the specific ratio, and determines a position of a pointer to be displayed on a screen of the external display device.