Using a touch-panel capable of detecting coordinate values of a plurality of points, as well as changes therein, on the display screen, a data block as a target for the information processing is selected based on the coordinate values of a plurality of the points which are specified by the user on the...http://www.google.com.au/patents/US20040021644?utm_source=gb-gplus-sharePatent US20040021644 - Information processing device having detector capable of detecting coordinate values, as well as changes thereof, of a plurality of points on display screen
