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Class Information
Number: 702/77
Name: Data processing: measuring, calibrating, or testing > Measurement system in a specific environment > Electrical signal parameter measurement system > Waveform analysis > Frequency > Frequency spectrum > Using fourier method
Description: Subject matter wherein the frequency spectrum is analyzed or determined using Fourier analysis or Fourier transform technique.

Patents under this class:
1 2 3 4 5 6 7

Patent Number Title Of Patent Date Issued
7253642 Method for sensing an electric field Aug. 7, 2007
7254500 Monitoring and representing complex signals Aug. 7, 2007
7248980 Method and apparatus for removing quantization effects in a quantized signal Jul. 24, 2007
7231311 Method for characterizing high-frequency mixers Jun. 12, 2007
7231319 System and method for proactive motor wellness diagnosis based on potential cavitation faults Jun. 12, 2007
7228245 Method for determining the fundamental oscillation frequency in an optical fiber and an application of a tensile force thus measured Jun. 5, 2007
7191069 Automatic identification of compounds in a sample mixture by means of NMR spectroscopy Mar. 13, 2007
7184922 Measurement device that appears to a computer system as a file storage device Feb. 27, 2007
7158901 FFT accelerated display mode Jan. 2, 2007
7149654 Sensor measurement method and system with universal data concentrators Dec. 12, 2006
7130751 Method and device for detecting leaks in reciprocating machinery Oct. 31, 2006
7124044 Method for reconstructing complex wave attributes from limited view measurements Oct. 17, 2006
7113877 Signal detection Sep. 26, 2006
7103490 Method for processing raw magnetic resonance data, magnetic resonance tomography unit and magnetic resonance spectroscopy unit Sep. 5, 2006
7103491 Method of estimating parameters of time series data using fourier transform Sep. 5, 2006
7096133 Method of establishing benchmark for figure of merit indicative of amplifier flicker noise Aug. 22, 2006
7085613 System for monitoring audio content in a video broadcast Aug. 1, 2006
7079962 Automated utility meter reading system with variable bandwidth receiver Jul. 18, 2006
7076383 Method of resonance spectroscopy for the analysis of statistical properties of samples Jul. 11, 2006
7072785 Rate measurement for anomalous trigger events Jul. 4, 2006
7065459 Interrogation method for passive sensor monitoring system Jun. 20, 2006
7062388 Series arc detection Jun. 13, 2006
7039537 Detection and discrimination of instabilities in process control loops May. 2, 2006
7035745 Statistical test method for objective verification of auditory steady-state responses (ASSR) in the frequency domain Apr. 25, 2006
7035744 Method and system for measuring the energy of a signal Apr. 25, 2006
7027940 Stepped sine wave frequency response measurement system Apr. 11, 2006
7024323 Control system for a failure mode testing system Apr. 4, 2006
7010446 Method and structure for mitigating instrumentation differences Mar. 7, 2006
7010445 Automated fault diagnosis device and method Mar. 7, 2006
7003415 Delay profile estimation apparatus and a correlating unit Feb. 21, 2006
6979993 Frequency analyzing method, frequency analyzing apparatus, and spectrum analyzer Dec. 27, 2005
6980913 Methods of determining channel information based on energy measured at multiple frequencies Dec. 27, 2005
6973403 Method and system for identification of system response parameters for finite impulse response systems Dec. 6, 2005
6947858 Methods and apparatus for analyzing flutter test data using damped sine curve fitting Sep. 20, 2005
6941237 Signal detection Sep. 6, 2005
6915225 Method, apparatus and system for digital data resampling utilizing fourier series based interpolation Jul. 5, 2005
6915224 Method for optimum spectrum analysis Jul. 5, 2005
6911827 System and method of measuring low impedances Jun. 28, 2005
6907367 Time-series segmentation Jun. 14, 2005
6898535 Method and apparatus for decomposing signal jitter using multiple acquisitions May. 24, 2005
6882947 Discrete fourier transform (DFT) leakage removal Apr. 19, 2005
6873921 Detecting persons concealed in a vehicle Mar. 29, 2005
6853934 System and method for remote data acquisition, monitoring and control Feb. 8, 2005
6853933 Method of identifying spectral impulses for Rj Dj separation Feb. 8, 2005
6810341 Time varying harmonic analysis including determination of order components Oct. 26, 2004
6807497 Laser measurement system with digital delay compensation Oct. 19, 2004
6804618 Detection and discrimination of instabilities in process control loops Oct. 12, 2004
6789030 Portable data collector and analyzer: apparatus and method Sep. 7, 2004
6789029 Method and apparatus for signal extraction in an electronic sensor Sep. 7, 2004
6768952 System and method of measuring low impedances Jul. 27, 2004

1 2 3 4 5 6 7

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