Patent ID: 6806863
Filing Date: 2004-10-19
Classification: G06F,G10H

Abstract:
A system for providing an input signal to an apparatus over an electro-magnetic communication link, said system includinga housing affixed to the wrist of an operator, a plurality of first electro-magnetic signal transmitters associated with said housing, at least one first electro-magnetic signal sensor at said housing, means for supplying distinctive signals to each of said plurality of first electro-magnetic signal transmitters such that distinctive electro-magnetic signals are emitted therefrom which can be distinguished from each other by the at least one sensor when reflected from a body portion of said operator or another object, a base station including a second electro-magnetic signal receiver, and means located at the housing for supplying distinctive signals responsive to said at least one first electro-magnetic signal sensor to said second electro-magnetic signal receiver.