Data processing: measuring – calibrating – or testing – Measurement system in a specific environment – Electrical signal parameter measurement system
Reexamination Certificate
2005-11-30
2009-12-29
Le, John H (Department: 2863)
Data processing: measuring, calibrating, or testing
Measurement system in a specific environment
Electrical signal parameter measurement system
C324S207170, C324S521000, C342S450000, C702S075000
Reexamination Certificate
active
07640121
ABSTRACT:
The present invention provides for disambiguating the phase of a field received from a wireless tracker in an electromagnetic (“EM”) tracking system. In a first method, a carrier wave signal is modulated with a tracking signal transmitted by an EM tracker. A time reference indicating a starting point for a particular phase of the carrier wave signal is determined and is used to determine the proper phase for the tracking signal. In a second method, the EM tracker transmits auxiliary data that includes the proper phase of the tracking signal. In a third method, the EM tracker includes a passive transponder that receives a desired phase of a tracking signal as auxiliary data in an excitation signal. In response, the EM tracker transmits the tracking signal according to the desired phase. Tracking electronics may then lock onto the proper or desired phase determined according to any of the disclosed methods.
REFERENCES:
patent: 3983474 (1976-09-01), Kuipers
patent: 4054881 (1977-10-01), Raab
patent: 4186338 (1980-01-01), Fichtenbaum
patent: 5251635 (1993-10-01), Dumoulin et al.
patent: 5443066 (1995-08-01), Dumoulin et al.
patent: 5676673 (1997-10-01), Ferre et al.
patent: 5747996 (1998-05-01), Fuchs
patent: 5803089 (1998-09-01), Ferre et al.
patent: 5829444 (1998-11-01), Ferre et al.
patent: 5873822 (1999-02-01), Ferre et al.
patent: 5967980 (1999-10-01), Ferre et al.
patent: 6073043 (2000-06-01), Schneider
patent: 6175756 (2001-01-01), Ferre et al.
patent: 6341231 (2002-01-01), Ferre et al.
patent: 6369564 (2002-04-01), Khalfin et al.
patent: 6445943 (2002-09-01), Ferre et al.
patent: 6490475 (2002-12-01), Seeley et al.
patent: 6636757 (2003-10-01), Jascob et al.
patent: 6774624 (2004-08-01), Anderson et al.
patent: 6856826 (2005-02-01), Seeley et al.
patent: 6856827 (2005-02-01), Seeley et al.
patent: 7015859 (2006-03-01), Anderson
patent: 2005/0003757 (2005-01-01), Anderson
patent: 2005/0012597 (2005-01-01), Anderson
Dellapenna Michael A.
General Electric Company
Le John H
McAndrews Held & Malloy Ltd.
Vogel Peter J.
LandOfFree
System and method for disambiguating the phase of a field... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with System and method for disambiguating the phase of a field..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System and method for disambiguating the phase of a field... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4089297