In a coordinate input device including a coordinate input unit and a coordinate indicator which comprises a winding and is movable on the coordinate input unit, an oscillation generator generates an oscillation signal. Connected to the oscillation generator, a capacitor produces the oscillation signal...http://www.google.fr/patents/US5070217?utm_source=gb-gplus-shareBrevet US5070217 - Coordinate input device capable of indicating a failure in a coordinate indicator
Coordinate input device capable of indicating a failure in a coordinate ...
