Patent ID: 6600478
Filing Date: 2003-07-29
Classification: G06F,G09G

Abstract:
Apparatus for selection and manipulation of a screen presentation comprising:a hand held device containing at least two radiant energy sources and switches for activating those sources individually or jointly; a matrix of radiant energy detectors arranged across a presentation screen at display pixel locations of the screen which radiant energy detectors in combination with circuits responsive thereto are for distinguishing each of the multiple radiant energy sources from the other; a position location matrix and logic circuit for providing position information on where radiant energy from one or more of the radiant energy sources is detected by at least one of the radiant energy detectors; control signal logic generating output signals representative of combinations of one or more radiant energy signals from the radiant energy sources that are detected by the radiant energy detectors; and control function logic responsive to the position information and the output signals to generate a cursor on the display screen and to manipulate display objects on the screen intercepted by the cursor.