Method and apparatus for finding the location of a pointing instrument on a tablet

摘要

The present invention is related to a method and apparatus for locationing a instrument of tablet, wherein a very simple equation is used to locate a instrument, for example, a stylus pen. The stylus pen location on the a sense line grid which formed by a set of spaced conductors is converted to a digitized number and can be reported to the host computer for controlling the screen cursor or making a sketch drawing.