Patent ID: 6150600
Filing Date: 2000-11-21
Classification: G10H

Abstract:
An inductive location sensor system comprising:a structure having a first surface;inductive antenna means fixed to said first surface, said inductive antenna means having a plurality of operatively associated antenna segments that are configured to form a varying segment density within a boundary defined by said inductive antenna means, said inductive antenna means being responsive to drive signals to generate output energy at a first frequency, said inductive antenna means being responsive to input energy of said first frequency received from an external source to generate response signals having amplitudes that are related to a segment density at a location within said boundary proximate to said external source of said input energy; anda responder having a resonant circuit that is specific to receiving said output energy at said first frequency and to transmitting said input energy at said first frequency in response to receiving said output energy, thereby being enabled to operate as said external source.