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Class Information
Number: 702/76
Name: Data processing: measuring, calibrating, or testing > Measurement system in a specific environment > Electrical signal parameter measurement system > Waveform analysis > Frequency > Frequency spectrum
Description: Subject matter wherein frequencies of interest of a complex waveform having multi-frequency components are determined or analyzed.

Sub-classes under this class:

Class Number Class Name Patents
702/77 Using fourier method 344

Patents under this class:
1 2 3 4 5 6 7 8 9

Patent Number Title Of Patent Date Issued
8674680 Method and device for fast measurement of frequency response with scalable short chirp signals Mar. 18, 2014
8649989 Time-domain triggering in a test and measurement instrument Feb. 11, 2014
8626459 Defect detection in objects using statistical approaches Jan. 7, 2014
8612182 Methods and systems for isolating a frequency in a rotating machine Dec. 17, 2013
8594961 Remote interrogation of a passive wireless antenna sensor Nov. 26, 2013
8588703 Arbitrary multiband overlay mixer apparatus and method for bandwidth multiplication Nov. 19, 2013
8589104 Device and method for compensating color shifts in fiber-optic imaging systems Nov. 19, 2013
8582675 Pre-channelized spectrum analyzer Nov. 12, 2013
8566053 Method and apparatus for compressive parameter estimation and tracking Oct. 22, 2013
8532207 Methods and systems for distinguishing a signal of interest from interference signals Sep. 10, 2013
8527227 Method and device for measuring electromagnetic wave Sep. 3, 2013
8527214 System and method for monitoring mechanical seals Sep. 3, 2013
8521460 Multi-domain test and measurement instrument Aug. 27, 2013
8514919 Synthetic instrument unit Aug. 20, 2013
8504209 Controlling a device that generates vibrations in a computer system Aug. 6, 2013
8466689 Methods and systems for monitoring capacitor banks Jun. 18, 2013
8458140 Apparatus and method for evaluating data points against cadastral regulations Jun. 4, 2013
8452544 Utility and method for the application of signal advance amplification to analog waveform or signal detection, acquisition and processing May. 28, 2013
8442779 Identifying degraded fans in datacenters May. 14, 2013
8442789 Method and device for determining a frequency mask for a frequency spectrum May. 14, 2013
8421440 Apparatus for spectrum sensing and associated methods Apr. 16, 2013
8392134 Antenna testing device and antenna testing method using the same Mar. 5, 2013
8386202 Communication device for household electric appliances and monitoring system using said device Feb. 26, 2013
8378693 Vector network analyzer (VNA) on a chip Feb. 19, 2013
8380450 Determination of blade vibration frequencies and/or amplitudes Feb. 19, 2013
8380453 Method and device for determining the frequency distribution of the signal levels of a measured signal measured in overlapping observation intervals Feb. 19, 2013
8374812 Signal analyzer and method for producing data therefore Feb. 12, 2013
8355884 Signal quality measurement device, spectrum measurement circuit, and program Jan. 15, 2013
8326557 Detection of an abnormal signal in a compound sampled Dec. 4, 2012
8314604 Apparatus and method for spurious-free signal range measurement for RF circuitry Nov. 20, 2012
8306765 Method and device for acoustic length testing of compressor Nov. 6, 2012
8306770 Method, system and test platform for testing output of electrical device Nov. 6, 2012
8296106 Apparatus, method and computer-readable storage medium for processing a signal in a spectrometer system Oct. 23, 2012
8296087 Interrogation method for passive wireless sensor interrogation system Oct. 23, 2012
8289195 Fractional rate resampling filter on FPGA Oct. 16, 2012
8271209 Spectral searching method for substance identification Sep. 18, 2012
8255179 Time qualified frequency mask trigger Aug. 28, 2012
8250008 Decision tree refinement Aug. 21, 2012
8244490 Power trigger with time qualified and sequential event capability Aug. 14, 2012
8233569 Realtime spectrum trigger system on realtime oscilloscope Jul. 31, 2012
8229754 Selecting features of displayed audio data across time Jul. 24, 2012
8224603 Frequency offset estimating apparatus and estimating method thereof Jul. 17, 2012
8219332 Electromagnetic field distribution measuring method, apparatus for the method, computer program and information recording medium Jul. 10, 2012
8214160 State detection device, state detection method, state detection program, and information recording medium Jul. 3, 2012
8200454 Method, data processing program and computer program product for time series analysis Jun. 12, 2012
8195416 Fundamental wave beat component detecting method and measuring target signal sampling apparatus and waveform observation system using the same Jun. 5, 2012
8195395 System for monitoring, determining, and reporting directional spectra of ocean surface waves in near real-time from a moored buoy Jun. 5, 2012
8180586 Amplitude discrimination using the frequency mask trigger May. 15, 2012
8169612 System and method for performing ellipsometric measurements on an arbitrarily large or continuously moving sample May. 1, 2012
8159208 Hand-held microwave spectrum analyzer with operation range from 9 KHz to over 20 GHz Apr. 17, 2012

1 2 3 4 5 6 7 8 9

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