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Class Information
Number: 702/72
Name: Data processing: measuring, calibrating, or testing > Measurement system in a specific environment > Electrical signal parameter measurement system > Waveform analysis > Waveform-to-waveform comparison > Phase comparison
Description: Subject matter comprising means for comparing a phase of the first waveform to that of the second waveform, or to a reference phase of a reference signal.

Patents under this class:
1 2 3 4

Patent Number Title Of Patent Date Issued
8712693 Method for enhanced subsurface electromagnetic sensitivity Apr. 29, 2014
8712711 Identification of electrical grid phase information for end-points in a grid network Apr. 29, 2014
8682604 Method and system of phase identification Mar. 25, 2014
8674634 Controller for a brushless motor Mar. 18, 2014
8639462 Method and system for determining the time-of-flight of a signal Jan. 28, 2014
8626462 Phase identification system and method Jan. 7, 2014
8577633 Gyro zero turn rate offset correction over temperature in a personal mobile device Nov. 5, 2013
8570024 Non-contact phase identification method and apparatus Oct. 29, 2013
8566053 Method and apparatus for compressive parameter estimation and tracking Oct. 22, 2013
8532802 Graphic phase shifter Sep. 10, 2013
8533121 Method and apparatus for phase identification in a three-phase power distribution network Sep. 10, 2013
8527226 Signal measurement apparatus and beam modulation apparatus used therein Sep. 3, 2013
8509294 Signal generator, signal generating system, and signal generating method Aug. 13, 2013
8489346 Parametric multi-cycle averaging in an intelligent electronic device Jul. 16, 2013
8473232 Measuring apparatus Jun. 25, 2013
8466689 Methods and systems for monitoring capacitor banks Jun. 18, 2013
8457912 Unwrapping angles from phasor measurement units Jun. 4, 2013
8457914 Apparatus and method for obtaining phase corresponding to object position Jun. 4, 2013
8442782 Method for determining and/or monitoring a process variable of a medium, and corresponding apparatus May. 14, 2013
8395373 Phasor estimation during current transformer saturation Mar. 12, 2013
8386202 Communication device for household electric appliances and monitoring system using said device Feb. 26, 2013
8373433 Test apparatus, test method and manufacturing method Feb. 12, 2013
8364430 System and method for precision phase shift measurement Jan. 29, 2013
8326558 Method of analyzing an integrated circuit, method of observation and their associated installations Dec. 4, 2012
8294138 Microwave readout for flux-biased qubits Oct. 23, 2012
8271221 Phase detection device and position detection device Sep. 18, 2012
8244489 Parametric multi-cycle averaging in an intelligent electronic device Aug. 14, 2012
8217640 Method and device for determining the phases in a multi-phase electrical system Jul. 10, 2012
8219340 Monitoring method for through-silicon vias of three-dimensional intergrated circuit (3D IC) and apparatus using the same Jul. 10, 2012
8211022 Systems and methods for assessing dynamic cerebral autoregulation Jul. 3, 2012
8207726 Determining electric grid endpoint phase connectivity Jun. 26, 2012
8190387 Frequency measurement apparatus May. 29, 2012
8180585 Magnetic crash sensor May. 15, 2012
8170823 Jitter estimation in phase-locked loops May. 1, 2012
8165836 Measurement apparatus and computer readable medium storing program for measuring error of a quadrature demodulator or quadrature modulator Apr. 24, 2012
8155927 Method and apparatus for improving noise discrimination in multiple sensor pairs Apr. 10, 2012
8140283 Independent frequency measurement and tracking Mar. 20, 2012
8135551 Robust on line stator turn fault identification system Mar. 13, 2012
8126664 Detection, localization and interpretation of partial discharge Feb. 28, 2012
8117000 Measuring quantum states of superconducting resonators Feb. 14, 2012
8060327 Waveform generator, waveform generating device, test apparatus, and machine readable medium storing a program thereof Nov. 15, 2011
8055969 Multi-strobe circuit Nov. 8, 2011
8050879 Phase identification system and method Nov. 1, 2011
8041524 Method of power factor correction Oct. 18, 2011
8036844 Transient performance data phase compensation system and method Oct. 11, 2011
8032850 Structure for an absolute duty cycle measurement circuit Oct. 4, 2011
8000926 Method and system for positional measurement using ultrasonic sensing Aug. 16, 2011
7966156 Method, computer program, and system for intrinsic timescale decomposition, filtering, and automated analysis of signals of arbitrary origin or timescale Jun. 21, 2011
7945406 Measuring device and method for measuring relative phase shifts of digital signals May. 17, 2011
7933322 Timing lock detection apparatus and method for digital broadcasting receiver Apr. 26, 2011

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