Electromagnetic inductive system with multi-induction loop layout and battery less pointer device and its method for locating the coordinate

摘要

A multi-induction loop layout of an electromagnetic inductive system is disclosed. The multi-induction loop layout of the invention comprises a plurality of inductive loops, one terminal of each inductive loop connecting to a loop switch, and the other terminal connecting to the common node. Every logical inductive loop is a relative close inductive loop, the relative close inductive loop possessing a plurality of <img id="CUSTOM-CHARACTER-00001" he="3.56mm" wi="2.46mm" file="US07358964-20080415-P00001.TIF" alt="custom character" img-content="character" img-format="tif"/>-type sections, forming a sawtooth-shaped region and corresponding to and closing each other to form a plurality of close-like regions. The form of which gradually approaches the multi-induction loop layout.