Data processing: measuring – calibrating – or testing – Measurement system in a specific environment – Quality evaluation
Reexamination Certificate
2011-06-07
2011-06-07
Bhat, Aditya (Department: 2857)
Data processing: measuring, calibrating, or testing
Measurement system in a specific environment
Quality evaluation
Reexamination Certificate
active
07957925
ABSTRACT:
A distortion compensation method includes determining an undisturbed phase for at least one of a first position indication signal and a second position indication signal. The method includes determining an undisturbed ratio that relates the amplitude of the first position indication signal at a first frequency to the amplitude of the second position indication signal at a second frequency. The method also includes determining a disturbed amplitude of the position indication signal and adjusting a position indication based on the disturbed amplitude and phase, the undisturbed amplitude ratio, and the undisturbed phase. The method further comprises determining a relationship between the eddy current phase of the first position indication signal and the second position indication signal.
REFERENCES:
patent: 4829250 (1989-05-01), Rotier
patent: 5629626 (1997-05-01), Russell et al.
patent: 5767669 (1998-06-01), Hansen et al.
patent: 6172499 (2001-01-01), Ashe
patent: 6427079 (2002-07-01), Schneider et al.
patent: 6624626 (2003-09-01), Khalfin
patent: 7253987 (2007-08-01), Shim et al.
patent: 2003/0011359 (2003-01-01), Ashe
patent: 2005/0222625 (2005-10-01), Laniado et al.
patent: 100534387 (2009-09-01), None
patent: 0228056 (1997-08-01), None
patent: 0993804 (2000-04-01), None
patent: 1203560 (2002-05-01), None
patent: 02/08793 (2002-01-01), None
International Search Report, PCT/CA2004/000587, dated Aug. 23, 2004, 3 pages.
European Search Report, European Patent Office, EP10184092, Dec. 6, 2010, 6 pages.
Kirsch Stefan R.
Nieminen John M.
Bhat Aditya
Fish & Richardson P.C.
Northern Digital Inc.
LandOfFree
Eddy current detection and compensation does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Eddy current detection and compensation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Eddy current detection and compensation will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2709607