Data processing: measuring – calibrating – or testing – Measurement system – Measured signal processing
Reexamination Certificate
2007-07-24
2007-07-24
Williams, Hezron (Department: 2856)
Data processing: measuring, calibrating, or testing
Measurement system
Measured signal processing
C073S001820, C073S105000, C073S649000, C702S097000, C702S190000, C702S191000
Reexamination Certificate
active
10929260
ABSTRACT:
A surface analysis apparatus and a method for compensating for mechanical vibrations and drifts in a surface analysis instrument are disclosed. A probe that is sensitive to the distance between the probe and a sample surface provides a probe signal. The probe signal contains information about the surface properties and noise due to changes in the probe-surface distance. A sensor measures a displacement between a probe and the sample surface. The sensor is substantially insensitive to the surface properties measured by the probe. The displacement measurement can be used to compensate for the noise in the probe signal.
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patent: 5610846 (1997-03-01), Trapet et al.
patent: 6308557 (2001-10-01), Heiland
patent: 6510363 (2003-01-01), Hidaka et al.
patent: 7055367 (2006-06-01), Hajdukiewicz et al.
patent: WO 200204883 (2002-01-01), None
Ben-Dov Yuval
Weber-Grabau Michael
Isenberg Joshua D.
JDI Patent
KLA-Tencor Technologies Corporation
Rogers David A.
Williams Hezron
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