Methods and systems for detecting spectrophotometer...

Data processing: measuring – calibrating – or testing – Measurement system – Orientation or position

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C702S104000, C702S105000, C702S127000, C702S151000, C702S152000, C702S153000, C702S155000, C702S158000, C250S208100, C250S239000, C250S566000, C356S305000, C356S326000, C356S328000

Reexamination Certificate

active

07813891

ABSTRACT:
This application generally relates to methods and systems for detecting spectrophotometer misalignment. In particular, the application may characterize the noise of a spectral measurement relative to a reference substrate known to exhibit a generally linear (flat) spectral output over a known spectrum. From the spectral measurement, a linear regression may be performed on a portion of the spectral output to determine a best fit line and a correlation of determination (“R-squared value”) may be determined correlated the measured data to the best fit line. Finally, the R squared value may be compared to a predetermined threshold R squared value to determine if the sensor is misaligned beyond an acceptable amount. If so, an alert may be generated.

REFERENCES:
patent: 6647148 (2003-11-01), Ozawa et al.
None, “Diffuse Reflectance Targets,” from Internet, www.labsphere.com/data/userFiles/Targets%20product%20sheet—8.pdf, Apr. 2008, 2 pp.
None, “Least Squares Fit of Straight Line to Data,” 1.105 Solid Mechanics Laboratory, from Internet, ocw.mit.edu/NR/rdonlyres/ Civil-and-Environmental-Engineering/1-105Solid-Mechanics-LaboratoryFall2003/...FFDF.../leastsqrs.pdf, Sep. 24, 2003, 3 pp.
None, “Correlation Coefficient,” from Internet, http://mathbits.com/ Mathits/TISection/Statistics2, correlation.htm, accessed Aug. 1, 2008, 3 pp.
None, “Linear Regression,” from Wikipedia, Internet, http://en.wikipedia.org/wiki/Linear—regression, accessed Aug. 1, 2008, pp. 1-13.
None, “Coefficient of determination,” from Wikipedia, Internet, http://en.wikipedia.org/wiki/Coefficient—of—determination, accessed Aug. 1, 2008, pp. 1-6.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Methods and systems for detecting spectrophotometer... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Methods and systems for detecting spectrophotometer..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Methods and systems for detecting spectrophotometer... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-4201975

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.