Patent ID: 6686909
Filing Date: 2004-02-03
Classification: G06F,G09G

Abstract:
A touch panel input coordinate transform device comprising:an origin register unit which registers information of an origin of a touch panel as origin information; a first storage unit which stores first rotation information based on images displayed on a display, when the origin of the touch panel is registered; a first transform unit which transforms physical coordinates touched on the touch panel into first logical coordinates using the origin information; a rotation control module which rotates the images; a second storage unit which stores second rotation information based on the images currently displayed on the display; a comparison unit which compares the first rotation information with the second rotation information when a touch operation is performed onto the touch panel, and determines a difference between the first rotation information and the second rotation information; and a second transform unit which transforms the first logical coordinates into second logical coordinates, on the basis of the difference, when the contents of the first rotation information are different from the contents of the second rotation information, and which supplies the second logical coordinates to an input control unit.