06316934 is referenced by 310 patents and cites 16 patents.

A system for monitoring of the position of at least one portion of an object. The system includes a plurality of transmitters operative to transmit alternating magnetic fields within a three-dimensional space, and at least one positioning sensor arranged to be fixed to at least one corresponding portion of the object whose position it is sought to monitor. Each of the positioning sensors includes a magnetic field receiver having at least one active axis and operative to receive at least one component, lying along the at least one active axes respectively, of the alternating magnetic fields. Each of the positioning sensors also includes at least one digital signal processor for storing at least one characteristic of the magnetic fields as transmitted by the plurality of transmitters, and comparing the characteristic to at least one characteristic of the magnetic fields as received by at least a corresponding one of the positioning sensors and, accordingly, determining and providing an output indication of at least one position characteristic of at least one corresponding portion of the object.

Title
System for three dimensional positioning and tracking
Application Number
9/345189
Publication Number
6316934 (B1)
Application Date
June 30, 1999
Publication Date
November 13, 2001
Inventor
Boaz Spivak
Petach Tikva
US
Mordechai Itzkovich
Petach Tikva
US
Netzer Amorai Moriya
Ramat Hasharon
US
Agent
Townsend and Townsend and Crew
US
Assignee
Netmor
US
IPC
G01B 7/14
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