ClassID:

171582

G01R25/005 - CPC Classification

Classification description:

Arrangements for measuring phase angle between a voltage and a current or between voltages or currents Circuits for comparing several input signals and for indicating the result of this comparison, e.g. equal, different, greater, smaller, or for passing one of the input signals as output signal

Recent Application in this class:
#1
20260142452
2026-05-21

FAULT TYPE IDENTIFICATION METHOD IN ELECTRICAL POWER SYSTEM

#2
20260104442
2026-04-16

METHOD FOR MEASURING THE PHASE OF A COMPLEX IMPEDANCE AND MEASURING DEVICE

#3
20260079206
2026-03-19

CONTROL DEVICE, ELECTRICAL APPLIANCE, AND FAULT DETECTION METHOD

#4
20260002968
2026-01-01

POWER CONVERTER AND DETECTION METHOD THEREOF

#5
20250341553
2025-11-06

SENSOR SYSTEM AND METHOD FOR DETECTING A MECHANICAL CONTACT BETWEEN A MOVING PART AND A NON-MOVING PART OF A POWDER HANDLING DEVICE

#6
20250306069
2025-10-02

METHOD AND APPARATUS FOR DETERMINING A TEMPORAL OFFSET BETWEEN SIGNALS AT DIFFERENT SIGNAL INPUTS

#7
20250229814
2025-07-17

BROKEN RAIL DETECTOR

#8
20250192547
2025-06-12

ARC SUPPRESSION METHOD, SYSTEM, AND MEDIUM FOR DISTRIBUTION NETWORK FAULTS BASED ON CLOSED-LOOP SELF-HEALING CONTROL

#9
20250140540
2025-05-01

SUBSTRATE PROCESSING SYSTEM WITH CAPABILITIES FOR DETECTING WHETHER A WAFER IS DECHUCKED AND A METHOD THEREOF

#10
20250113414
2025-04-03

SYSTEMS AND METHODS FOR MEASURING INDUCTION COIL PARAMETERS

#11
20250080027
2025-03-06

MOTOR DRIVE CONTROL DEVICE AND METHOD FOR DETECTING IDLING OF MOTOR

#12
20250052836
2025-02-13

DIRECTIONAL OVERCURRENT MONITORING IN SUBSTATION TRANSFORMERS

#13
20250015765
2025-01-09

IMPEDANCE DETECTION CIRCUIT, IMPEDANCE CONTROL CIRCUIT, AND DOHERTY AMPLIFIER CIRCUIT

#14
20240410720
2024-12-12

AIRCRAFT CONTROL SURFACE ELEMENT MONITORING SYSTEM

#15
20240377477
2024-11-14

MEASUREMENT APPARATUS AND MEASUREMENT METHOD

#16
20240361371
2024-10-31

Systems and Methods for Duty Cycle Measurement

#17
20240361368
2024-10-31

METHOD AND APPARATUS FOR PHASE DETECTION

#18
20240310418
2024-09-19

DEVICE AND METHOD FOR MONITORING POWER SUPPLY VOLTAGE OF ELECTRONIC CIRCUIT

#19
20240278815
2024-08-22

BROKEN RAIL DETECTOR

#20
20240272260
2024-08-15

METHOD AND SYSTEM FOR CALIBRATING VOLTAGE MEASUREMENTS IN A SYSTEM FOR MEASURING ELECTRICAL QUANTITIES

#21
20240151755
2024-05-09

FAULT DETECTION CIRCUIT

#22
20240125836
2024-04-18

METHOD FOR DETERMINING AT LEAST ONE PROPERTY OF A ROTATIONAL MOVEMENT OF A THREE-PHASE ROTARY CURRENT MACHINE IN GENERATOR OPERATION AND ELECTROMECHANICAL DRIVE

#23
20240085476
2024-03-14

ANALOG PHASE SELECTION TEST SYSTEM

#24
20230421426
2023-12-28

Method for calibrating an SSB receiver

#25
20230421153
2023-12-28

Semiconductor integrated circuit

#26
20230314494
2023-10-05

Portable sync module

#27
20230280381
2023-09-07

METHODS AND SYSTEMS FOR DETERMINING A LINEAR POWER FLOW FOR A DISTRIBUTION NETWORK

#28
20230236235
2023-07-27

METHOD OF DETERMINING LINE FAULT OF POWER SYSTEM

#29
20230143444
2023-05-11

Method for determining a state of at least one cell of a battery, and data-processing system

#30
20230003778
2023-01-05

Aircraft grid phase angle tracker based on nonlinear active disturbance rejection

#31
20220247339
2022-08-04

Method for monitoring the operation of a frequency converter, and frequency converter

#32
20220234632
2022-07-28

BROKEN RAIL DETECTOR

#33
20220143412
2022-05-12

APPARATUS AND METHODS FOR PHASE-AGNOSTIC STIMULI

#34
20220128619
2022-04-28

Signal detection and monitoring

#35
20220048038
2022-02-17

Food waste disposer monitoring using phase difference between motor voltage and motor current

#36
20210341524
2021-11-04

Timing Difference Detection Circuit Capable of Detecting a Phase Difference Between Different Channels

#37
20210270879
2021-09-02

Systems and methods for duty cycle measurement

#38
20210190841
2021-06-24

Device and method for measuring of the complex transfer function of an object

#39
20210176832
2021-06-10

Cooking apparatus capable of detecting temperature of object to be heated

#40
20210165025
2021-06-03

Validation of phase currents in a multi-phase system

#41
20210107541
2021-04-15

Broken rail detector

#42
20210096159
2021-04-01

Phase identification display method

#43
20210091720
2021-03-25

Method for startup of crystal oscillator with aid of external clock injection, associated crystal oscillator and monitoring circuit therein

#44
20210084722
2021-03-18

Induction heating device having improved output control function

#45
20210065747
2021-03-04

System and method for combining a remote audio source with an animatronically controlled puppet

#46
20210063453
2021-03-04

Method and apparatus for providing automated power topology mapping

#47
20210018543
2021-01-21

Power converter with phase error correction

#48
20210003626
2021-01-07

METHOD FOR INACCURACY PREDICTION AND MITIGATION OF IMPEDANCE-BASED FAULT LOCATION IN DISTRIBUTION GRIDS

#49
20200343806
2020-10-29

Load abnormality detecting circuit for inverter and inverter apparatus

#50
20200309832
2020-10-01

Method and apparatus for estimating a phase relation between binary signals

#51
20200192179
2020-06-18

Optical phased arrays and methods for calibrating and focusing of optical phased arrays

#52
20200191843
2020-06-18

System and method for droop detection

#53
20200174048
2020-06-04

SENSOR VOLTAGE PHASE ANGLE CORRECTION

#54
20200171507
2020-06-04

Food waste disposer monitoring using phase difference between motor voltage and motor current

#55
20200150175
2020-05-14

Testing integrated circuit designs containing multiple phase rotators

#56
20200091767
2020-03-19

Methods and systems for determining a linear power flow for a distribution network

#57
20200072882
2020-03-05

Differential Phase and amplitude detector

#58
20190302158
2019-10-03

Method for monitoring an electrical network

#59
20190265284
2019-08-29

Generator waveform measurement

#60
20190257866
2019-08-22

Minimizing phase mismatch and offset sensitivity in a dual-path system

#61
20190154742
2019-05-23

Phase analysis circuit

#62
20190140629
2019-05-09

Phase detector

#63
20190113553
2019-04-18

Voltage sensor-less position detection in an active front end

#64
20190101574
2019-04-04

System for indicating the presence of voltage in a high-voltage network

#65
20190094045
2019-03-28

Rotation angle detecting device

#66
20190072596
2019-03-07

Multiple phase measurement device

#67
20190037515
2019-01-31

System and method for timing synchronization of a self-powered power sensor

#68
20190004111
2019-01-03

Systems and methods for duty cycle measurement, analysis, and compensation

#69
20180337548
2018-11-22

Multi-supply synchronization for wireless charging

#70
20180292442
2018-10-11

Method for identifying at least one diagnosis variable, measuring device and measuring system

#71
20180219539
2018-08-02

On-chip waveform measurement

#72
20180219538
2018-08-02

On-chip waveform measurement

#73
20180203060
2018-07-19

Sampling clock testing circuit and sampling clock testing method

#74
20180096341
2018-04-05

Transmit phase detection circuit

#75
20180095123
2018-04-05

Enhanced disturbance management of a power grid system

#76
20180074121
2018-03-15

Testing integrated circuit designs containing multiple phase rotators

#77
20180074120
2018-03-15

Testing integrated circuit designs containing multiple phase rotators

#78
20180070846
2018-03-15

Methods and devices for sample characterization

#79
20180067154
2018-03-08

Synchronous detection circuit and method for extracting magnitude and phase from a waveform

#80
20180067063
2018-03-08

Synchronous detection circuit and method for determining a bio-impedance of a biological tissue

#81
20180062378
2018-03-01

System level ESD detection device and restart system using the same

#82
20180052193
2018-02-22

Generator waveform measurement

#83
20170363667
2017-12-21

DIGITAL PHASE METER AND PHASE DETECTION METHOD

#84
20170356939
2017-12-14

Method of and apparatus for learning the phase error or timing delays within a current transducer and power measurement apparatus including current transducer error correction

#85
20170279439
2017-09-28

RF phase offset detection circuit

#86
20170274477
2017-09-28

Method and apparatus for through-cut detection in the thermally assisted through-cutting of a workpiece

#87
20170230042
2017-08-10

Phase difference detecting device

#88
20170229972
2017-08-10

AC/DC converter with three to single phase matrix converter, full-bridge AC/DC converter and HF transformer

#89
20170227585
2017-08-10

Harmonic distortion separation method, nonlinear character determination method and apparatus and system

#90
20170222796
2017-08-03

Phased clock error handling

#91
20170168098
2017-06-15

Electrical phase identification

#92
20170016953
2017-01-19

Electronic measurement device and method for operating an electronic measurement device

#93
20160329902
2016-11-10

Reducing errors due to non-linearities caused by a phase frequency detector of a phase locked loop

#94
20160313383
2016-10-27

Method for detecting a defective measurement of an extensive electrical quantity

#95
20160266185
2016-09-15

System and method for a phase detector

#96
20160226429
2016-08-04

Detecting apparatus for AC motor malfunction and distribution panel having the same

#97
20160190852
2016-06-30

Wireless charging system and foreign metal object detection method for the system

#98
20160108905
2016-04-21

Compressors and methods for determining optimal parking positions for compressor pistons

#99
20160091548
2016-03-31

Method and device for monitoring and estimating a periodic voltage of a medium voltage electrical circuit

#100
20160091542
2016-03-31

Transformer connection phase determination device and method

#101
20160084894
2016-03-24

Methods and systems for measuring power in wireless power systems

#102
20160072495
2016-03-10

Phase adjustment device, phase difference detecting device and phase-adjusting method

#103
20160010626
2016-01-14

Method for avoiding voltage instability in an electrical grid of an offshore wind park

#104
20150377939
2015-12-31

Device, method and program for determining misplacement of a current transformer on a power line

#105
20150345992
2015-12-03

Displacement sensor and displacement detection method

#106
20150309098
2015-10-29

Detector circuit

#107
20150236615
2015-08-20

Control device of power conversion unit and method of controlling power conversion unit

#108
20150198661
2015-07-16

Testing integrated circuit designs containing multiple phase rotators

#109
20150185264
2015-07-02

Phase detector with metastable prevention stage

#110
20150138854
2015-05-21

Apparatus and method for detecting output phase deficiency in inverter

#111
20150100256
2015-04-09

IMBALANCE DETERMINING METHOD, IMBALANCE DETERMINING APPARATUS, AND RECORDING MEDIUM

#112
20150061609
2015-03-05

Reference signal generating circuit and method using a sampled input signal and a reference clock signal, and power factor compensation apparatus having the same

#113
20150022180
2015-01-22

Method and apparatus for phase identification in a three-phase power distribution network using servers

#114
20140368185
2014-12-18

Phase-locked web position signal using web fiducials

#115
20140354262
2014-12-04

LOCK DETECTOR FOR DIGITAL PHASE-LOCKED LOOP

#116
20140343878
2014-11-20

Method and apparatus for power quality and synchrophasor monitoring on power lines

#117
20140285211
2014-09-25

Self-test solution for delay locked loops

#118
20140285106
2014-09-25

Detection circuit, power circuit, and luminaire

#119
20140232380
2014-08-21

Motion sensor, method, and computer-readable storage medium providing a motion sensor with a vibration processor to set a state of a flag in response to selected ones of a plurality of test results being indicative of a passing conditions

#120
20140139266
2014-05-22

Method of static phase offset correction for a linear phase detector

#121
20130226490
2013-08-29

Motion sensor, method, and computer-readable storage medium providing a motion sensor generating a signal having signal states with a reduced amount of state chatter

#122
20130069629
2013-03-21

Method of implementation of peak hold in a phasing voltmeter

#123
20130009627
2013-01-10

Phase detector

#124
20120076245
2012-03-29

Signal detection apparatus

#125
20120074977
2012-03-29

Wafer probe station capable of actively controlling tilt of chuck and controlling method thereof

#126
20120014486
2012-01-19

Precision method for aligning radio frequency pulse timing characteristics

#127
20110298447
2011-12-08

Motion sensor, method, and computer-readable storage medium providing a motion sensor with a magnetic field sensing element for generating a magnetic field signal and a state processor to identify a plurality of states corresponding to ranges of values of the magnetic field signal having a reduced amount of state chatter

#128
20110257779
2011-10-20

Phase-locked web position signal using web fiducials

#129
20100308793
2010-12-09

Phase locked loop device and method thereof

#130
20100201343
2010-08-12

Programmable delay module testing device and methods thereof

#131
20100045503
2010-02-25

Pulse phase difference detecting circuit and A/D converter using the same

#132
20100019800
2010-01-28

VERNIER PHASE ERROR DETECTION METHOD

#133
20100019799
2010-01-28

Methods and apparatus for digital phase detection with improved frequency locking

#134
20100001764
2010-01-07

Configurable differential lines

#135
20090316552
2009-12-24

Time interval analyzer which measures delay of read signal from medium

#136
20090281752
2009-11-12

Skew measurement apparatus, skew measurement method, recording media and test apparatus

#137
20080036446
2008-02-14

Electrical phase checking apparatus and method of metering

#138
20060284690
2006-12-21

Phase locked loop, phase detecting method for the phase locked loop, and receiver using the same

#139
20060208769
2006-09-21

Circuit for use in frequency or phase detector

#140
20060066291
2006-03-30

Test circuit for delay lock loops

#141
20060061393
2006-03-23

Method and device for digitally measuring the phase of a signal

#142
20060022717
2006-02-02

Circuit and method for detecting phase

#143
20060017472
2006-01-26

Phase detection in a sync pulse generator

#144
20050207484
2005-09-22

Device and method for detecting the phase of a signal

#145
20050117404
2005-06-02

Linear half-rate phase detector and clock and data recovery circuit

#146
20050111606
2005-05-26

Digital phase detector for periodically alternating signals

#147
20050024037
2005-02-03

Method and circuit for measuring on-chip, cycle-to-cycle clock jitter

#148
18434327
2025-05-20

Digital droop detector

#149
18048018
2024-03-12

Digital droop detector

#150
16053219
2019-07-02

System and method for detecting a contact between an aerial device and an electrical power source

#151
15788517
2019-10-29

Long range phasing voltmeter with robust phase transmission

#152
15426123
2018-06-19

Phase shift detector

#153
14788360
2018-03-20

Phase position verification system and method for an array antenna

#154
13784329
2016-04-05

Dynamic measurements of pulse peak value