ClassID:

170983

G01P3/489 - CPC Classification

Classification description:

Measuring linear or angular speed; Measuring differences of linear or angular speeds; Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals Digital circuits therefor

Recent Application in this class:
#1
20260128699
2026-05-07

PULSE WIDTH MODULATION SIGNAL GENERATOR AND METHOD

#2
20260043826
2026-02-12

Method of Estimating Motor Speed and Motor Control System

#3
20260036603
2026-02-05

WHEEL SPEED SCALER FOR VEHICLES

#4
20250389747
2025-12-25

SYSTEM FOR COMPENSATING FOR AN OUTPUT LATENCY IN A SPEED SENSOR

#5
20250251257
2025-08-07

DYNAMIC RESOLUTION SENSOR

#6
20250116538
2025-04-10

Condition Monitoring for Rotatable Elements

#7
20240426862
2024-12-26

Magnetic Field Speed Sensor Output Signal Protocol

#8
20240418099
2024-12-19

INTEGRATED MACHINE SPEED SIGNAL WAVEFORM CAPTURE

#9
20240345126
2024-10-17

SYSTEM AND METHOD FOR COMPENSATING WHEEL SPEED SENSOR SIGNAL LATENCY

#10
20240319226
2024-09-26

METHOD AND DEVICE FOR DETERMINING A ROTATIONAL FREQUENCY OF A WHEEL

#11
20240175891
2024-05-30

SYSTEMS AND METHODS FOR ROTOR SPEED DETERMINATION

#12
20230400477
2023-12-14

HIGH RESOLUTION SENSING PROTOCOL

#13
20230073229
2023-03-09

Method and device for providing information on an angular displacement of a DC electromotor

#14
20220404386
2022-12-22

Health-monitoring system for a device determining rotation frequency of a shaft

#15
20220278637
2022-09-01

Estimation of rotor operational characteristics for a wind turbine

#16
20220220860
2022-07-14

Health-monitoring system for determining rotation frequency of a shaft

#17
20220206548
2022-06-30

PULSE WIDTH MODULATION AND VOLTAGE TEST SIGNALS FOR FAN TYPE DETECTION

#18
20220048481
2022-02-17

Method and device for determining a rotational frequency of a wheel

#19
20210215061
2021-07-15

Adaptive voltage threshold for turbine engine

#20
20210148946
2021-05-20

Method for measuring the speed of rotation of an aircraft engine shaft, taking into account the measurement noise

#21
20210031882
2021-02-04

Bicycle controller and bicycle control system including bicycle controller

#22
20200386575
2020-12-10

Magnetic field sensors and output signal formats for magnetic field sensors

#23
20200363442
2020-11-19

Rotary speed sensors

#24
20200355522
2020-11-12

System and method for vibration detection with no loss of position information using a magnetic field sensor

#25
20200355521
2020-11-12

System and method for vibration detection with direction change response immunity using a magnetic field sensor

#26
20200341025
2020-10-29

Magnetic speed sensor with a distributed wheatstone bridge

#27
20200300881
2020-09-24

Method and device for providing information on an angular displacement of a dc electromotor

#28
20200217871
2020-07-09

Coaxial angular velocity sensor system

#29
20200217870
2020-07-09

Companion chip short circuit immunity

#30
20200122700
2020-04-23

Sensor circuit compensation for supply voltage transients

#31
20200096531
2020-03-26

SYSTEM AND METHODS OF DETERMINING ACCELERATION OF A SHAFT

#32
20200081074
2020-03-12

Apparatuses and methods for sending and receiving rotation speed information

#33
20190310281
2019-10-10

Determination of machine rotational speed based on vibration spectral plots

#34
20190293675
2019-09-26

Rotary speed sensors

#35
20190277874
2019-09-12

Magnetic speed sensor with a distributed wheatstone bridge

#36
20190204115
2019-07-04

Low noise zero crossing detection for indirect tire pressure monitoring

#37
20190178905
2019-06-13

Device for measuring the speeds of rotation of at least two wheels of an aircraft undercarriage

#38
20190101413
2019-04-04

Motor control unit

#39
20190064207
2019-02-28

Method and device for testing a detection sensor for a motor vehicle

#40
20190011292
2019-01-10

Pulse width modulation with two or more different threshold levels

#41
20180364271
2018-12-20

Processing method for a rotation speed signal of an aircraft engine shaft affected by noise

#42
20180358914
2018-12-13

Motor control circuit, control method, motor drive system, electronic device

#43
20180259546
2018-09-13

Device for determining the angular speed of a bicycle wheel and the pedaling cadence applied to the pedals of said bicycle

#44
20180210004
2018-07-26

Method and device for operating a rotational speed sensor, rotational speed sensor device

#45
20180209820
2018-07-26

Sensor controller, sensor signal receiver, incremental magnetic speed sensor module, method for a sensor controller, method for a sensor signal receiver and computer program

#46
20180198389
2018-07-12

Methods and apparatus for multi-mode motor speed calculation using digital hall effect sensors

#47
20180174441
2018-06-21

Apparatuses for encoding and decoding wheel speed sensor signals and methods for communicating encoded wheel speed sensor signals

#48
20180118305
2018-05-03

Bicycle controller and bicycle control system including bicycle controller

#49
20180088145
2018-03-29

Method for generating a speed signal of an electric motor

#50
20170343575
2017-11-30

Method for assessing a rotational speed of an engine

#51
20170322014
2017-11-09

Angle determinating method using encoder signal with noise suppression, adjusting method for output signal of encoder and absolute encoder

#52
20170307645
2017-10-26

Rotary speed sensors

#53
20170210228
2017-07-27

Vehicle display device

#54
20170184623
2017-06-29

Wheel speed sensor

#55
20170167950
2017-06-15

Estimation apparatus, estimation method and engine system

#56
20170160303
2017-06-08

Resolution increase in the rotational speed signal between rotational speed pulses

#57
20170045547
2017-02-16

Generating timing signals

#58
20170019103
2017-01-19

Low-power activation circuit with motion detector

#59
20160334435
2016-11-17

Tachometer systems and methods of determining the rotation speed of a wheel of a landing gear of an aircraft

#60
20160327589
2016-11-10

System and method for speed sensor position detection in a multiple channel control system

#61
20160305976
2016-10-20

Sensor comprising an integrated identification device

#62
20160291052
2016-10-06

Method for reducing error in rotor speed measurements

#63
20160280180
2016-09-29

Seat-belt retractor with determination of angle of rotation

#64
20160252543
2016-09-01

Low noise zero crossing detection for indirect tire pressure monitoring

#65
20160231346
2016-08-11

Rotation sensor

#66
20160231141
2016-08-11

Method for monitoring a transmission link

#67
20160209476
2016-07-21

Magnetic field sensor with delayed output

#68
20160121420
2016-05-05

SYSTEM AND METHOD FOR MEASURING ROTATION OF A WIRE FEED MECHANISM

#69
20160084867
2016-03-24

Speed sensor interface including differential comparator

#70
20160018433
2016-01-21

Speed sensor

#71
20150370249
2015-12-24

Slow speed signal detection for ABS sensors with adaptive time watchdog concept for 0Hz capability

#72
20150346004
2015-12-03

Method for adapting a detection threshold of a crankshaft sensor for motor vehicle

#73
20150345989
2015-12-03

System for delivering at least one shifted analogical output signal

#74
20150333752
2015-11-19

Low-power activation circuit with motion sensor

#75
20150331006
2015-11-19

Velocity Measurement Device and Velocity Measurement Method

#76
20150316446
2015-11-05

ENGINE RPM SIGNAL PROCESSING METHOD FOR CLUTCH CONTROL IN VEHICLE

#77
20150268263
2015-09-24

Speed sensor device, speed sensor method, electronic control unit and control method

#78
20150263659
2015-09-17

Apparatus for detecting speed of motor

#79
20150260548
2015-09-17

Variable reluctance sensor interface with integration based arming threshold

#80
20150226709
2015-08-13

Time reference derivation from time of arrival measurements

#81
20150219474
2015-08-06

Digital period divider

#82
20150198627
2015-07-16

System and method for speed sensor position detection in a multiple channel control system

#83
20150146826
2015-05-28

Integrated circuit implementation of methods and apparatuses for monitoring occupancy of wideband GHz spectrum, and sensing respective frequency components of time-varying signals using sub-nyquist criterion signal sampling

#84
20150137800
2015-05-21

Sensing method and system for correcting an input waveform from a coded wheel

#85
20150097556
2015-04-09

Variable reluctance sensor interfaces and methods of their operation

#86
20150096371
2015-04-09

Speed sensor identification

#87
20150091548
2015-04-02

Measurement of motor rotor position or speed

#88
20150061656
2015-03-05

Circuits and methods for generating a threshold signal used in a motion detector in accordance with a least common multiple of a set of possible quantities of features upon a target

#89
20140375312
2014-12-25

Systems and methods for providing signal encoding representative of a signature region in a target

#90
20140358474
2014-12-04

Mechanisms for deriving an accurate timing signal from a noisy waveform

#91
20140312934
2014-10-23

Low-power activation circuit with motion sensor

#92
20140311230
2014-10-23

Method for determining segment times of a sensor wheel of an internal combustion engine

#93
20140247038
2014-09-04

FAN SPEED TESTING DEVICE

#94
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

#95
20140214352
2014-07-31

Methods and systems for conditioning signals from a speed sensor

#96
20140167741
2014-06-19

Wheel-speed sensor mounting device

#97
20140150551
2014-06-05

Device for measuring the angular velocity or velocity of a moving part and for detecting the direction of motion of the moving part

#98
20140084904
2014-03-27

Apparatus and method for providing an output signal indicative of a speed of rotation and a direction of rotation of a ferromagnetic object

#99
20140084903
2014-03-27

Apparatus and method for providing an output signal indicative of a speed of rotation and a direction of rotation of a ferromagnetic object

#100
20140062463
2014-03-06

Circuits and methods using a first cycle of a signal to generate a threshold signal used for comparing to a second later cycle of the signal

#101
20140035562
2014-02-06

Method, identification system, and electronic system for identifying a fan type of a fan

#102
20140035561
2014-02-06

Variable reluctance sensor interface with integration based arming threshold

#103
20140028292
2014-01-30

Identification system and electronic system for identifying a fan type of a fan

#104
20140009102
2014-01-09

System and method of speed detection in an AC induction machine

#105
20130317631
2013-11-28

Semiconductor data processing apparatus and engine control apparatus

#106
20130289933
2013-10-31

DETECTING SHAFT ROTATION WITH SHORT OR MISSING TEETH

#107
20130241544
2013-09-19

Frequency doubling of xMR signals

#108
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

#109
20130187581
2013-07-25

Method and arrangement for determining the dynamic state of an electric motor

#110
20130073250
2013-03-21

Sensor arrangement for speed measurement

#111
20130069634
2013-03-21

Speed sensor comprising a Costas loop

#112
20130060490
2013-03-07

Method for determining the torque and/or angular speed of a rotating shaft and a device for carrying out same

#113
20130046488
2013-02-21

Circuits and methods for automatically adjusting a magnetic field sensor in accordance with a speed of rotation sensed by the magnetic field sensor

#114
20130020977
2013-01-24

Motor speed detection apparatus and motor control apparatus

#115
20130018627
2013-01-17

METHOD AND SYSTEM FOR MEASURING SPEED

#116
20120323523
2012-12-20

Speed detection device

#117
20120182658
2012-07-19

Low-power activation circuit with magnetic motion sensor

#118
20120179316
2012-07-12

Wobble compensation of an encoder speed signal for an electric motor

#119
20120116664
2012-05-10

Vehicle control device and rotation detection device used in same

#120
20120092000
2012-04-19

Arrangement for intrinsically safe detection of a wheel rotational speed

#121
20110313717
2011-12-22

System and method of speed detection in an AC induction machine

#122
20110298450
2011-12-08

Circuits and methods for generating a threshold signal used in a motion detector

#123
20110298449
2011-12-08

Motion sensor, method, and computer-readable storage medium providing a motion sensor with a validated output signal from the motion sensor

#124
20110298448
2011-12-08

Motion sensor, method, and computer-readable storage medium providing a motion sensor that adjusts gains of two circuit channels to bring the gains close to each other

#125
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

#126
20110260712
2011-10-27

Cycle meter adjustment device

#127
20110192225
2011-08-11

method for the dnyanmically adapted recording of an angular velocity using a digital angular position transducer

#128
20110144940
2011-06-16

Sensor and method for the detection of local displacements and rotations

#129
20110125456
2011-05-26

Signal processing circuit for rotation detector

#130
20110089930
2011-04-21

Method for determining at least one first internal parameter of a sensor

#131
20110088468
2011-04-21

Systems and methods for measuring vehicle speed

#132
20110057822
2011-03-10

Pulse generating device, rotator module, rotational speed control device, and image forming apparatus

#133
20110036156
2011-02-17

Method for adapting mechanical tolerances of a timing wheel

#134
20100329760
2010-12-30

Speed detection device, image forming device, and computer readable storage medium storing speed detection program

#135
20100321006
2010-12-23

Rotational angle-measurement apparatus and rotational speed-measurement apparatus

#136
20100299100
2010-11-25

METHODS AND SYSTEMS INVOLVING DETERMINING SHAFT VELOCITY

#137
20100277224
2010-11-04

Active sensor with operating mode changeover

#138
20100264908
2010-10-21

Shaft speed sensor with analog output

#139
20100225507
2010-09-09

Decoder device and movement controller

#140
20100223025
2010-09-02

Method and device for balancing production-related inaccuracies of the magnetic wheel of an electromotive drive of a vehicle

#141
20100217542
2010-08-26

Apparatus, method, and program for detecting rotation speed information, and apparatus, method, and, program for detecting tire having decreased pressure

#142
20100207623
2010-08-19

Sensor device and method

#143
20100182725
2010-07-22

Circuit arrangement and method for monitoring wheel speed sensors in a motor vehicle control device

#144
20100181956
2010-07-22

Rotational position detecting method for AC servomotor and simple encoder

#145
20100156395
2010-06-24

Method and apparatus for amplified variable reluctance speed sensor

#146
20100149236
2010-06-17

Speed calculation device, speed estimation device, image forming device, and storage medium

#147
20100141237
2010-06-10

Active Sensor, Use Thereof and Method for Compensating Amplitude Fluctuations in the Output Current Signal of an Active Sensor

#148
20100125430
2010-05-20

Analog angle sensor accuracy correction program correction method, recording medium, and servo driver

#149
20100097051
2010-04-22

INCREMENTAL POSITION, SPEED AND DIRECTION DETECTION APPARATUS AND METHOD FOR ROTATING TARGETS UTILIZING MAGNETORESISTIVE SENSOR

#150
20100090690
2010-04-15

Arrangement for wheel rotational speed detection with increased intrinsic safety

#151
20100085038
2010-04-08

Arrangement comprising a magnetic-field-dependent angle sensor

#152
20100063684
2010-03-11

Electric power steering system control methods

#153
20100052659
2010-03-04

High temperature electronics for passive eddy current sensors

#154
20100036629
2010-02-11

Method and Device for Recognizing Pulses

#155
20100026279
2010-02-04

Apparatus and method for providing an output signal indicative of a speed of rotation and a direction of rotation as a ferromagnetic object

#156
20100019761
2010-01-28

Rotation detection device and bearing having rotation detection device

#157
20090326860
2009-12-31

Rotation sensing method and system

#158
20090306851
2009-12-10

Minimizing wheel speed and acceleration errors

#159
20090290669
2009-11-26

Phase difference detection device and rotation position detection device

#160
20090282903
2009-11-19

Angular velocity/angular acceleration calculator, torque estimator, and combustion state estimator

#161
20090278711
2009-11-12

Sensor arrangement for the precise detection of relative movements between an encoder and a sensor

#162
20090273341
2009-11-05

System including signal offset estimation

#163
20090190283
2009-07-30

Predictive phase locked loop system

#164
20090177434
2009-07-09

Method and apparatus for monitoring the rotational speed of the shaft of a gas turbine

#165
20090177363
2009-07-09

Method and apparatus for monitoring gas turbine blades

#166
20090150116
2009-06-11

METHOD FOR AUTOMATICALLY SETTING INITIALLY-ESTIMATED ROTATIONAL FREQUENCY IN MOTOR FREQUENCY MEASURING SYSTEM

#167
20090022441
2009-01-22

Assembly Forming a Bearing Housing Equipped with an Information Sensing System

#168
20080304201
2008-12-11

VOLTAGE SIGNAL CONVERTER CIRCUIT AND MOTOR

#169
20080303468
2008-12-11

Correction method for microprocessor-controlled digital regulation

#170
20080255796
2008-10-16

Method and device for measuring rotation speed of rotating equipment

#171
20080236265
2008-10-02

Method for determining the reversal of direction of rotation of an engine

#172
20080197917
2008-08-21

Device for filtering a signal and corresponding method

#173
20080180090
2008-07-31

Magnetic speed, direction, and/or movement extent sensor

#174
20080159467
2008-07-03

Method for determining the rotation speed of rotating shaft

#175
20080143322
2008-06-19

Circuit arrangement method for obtaining an output signal, and rotational speed measurement device comprising such a circuit arrangement

#176
20080133172
2008-06-05

Velocity detection apparatus

#177
20080110283
2008-05-15

Method and system for accuracy of speed and acceleration measurements on rotating machinery with a speed wheel

#178
20080098806
2008-05-01

Angular speed detecting apparatus for crankshaft of internal combustion engine

#179
20080078361
2008-04-03

Method of crank signal disturbance compensation

#180
20080052033
2008-02-28

Method, Apparatus and Computer Program Product of Aliasing Discriminator for Encoder Interfaces

#181
20080042643
2008-02-21

Method for detecting operating parameters of a power tool comprising an internal combustion engine

#182
20080010037
2008-01-10

Reverse rotation detector for internal combustion engine

#183
20070299992
2007-12-27

Signal processing device

#184
20070198200
2007-08-23

Speed detector and servomotor

#185
20070170912
2007-07-26

Rotation sensor, and method for outputting signals from rotation sensor

#186
20070139036
2007-06-21

Signal processing circuit of rotation detecting device

#187
20070118327
2007-05-24

Speed sensor

#188
20070108966
2007-05-17

Electronic device for interrupt signal control to acquire encoder speed information and a method thereof

#189
20070103145
2007-05-10

Electronic circuit configuration for optionally connecting rotary speed sensors, especially in commercial vehicles

#190
20070090961
2007-04-26

Method and system for detecting and measuring the disturbances in terms of frequency of the rate of rotation of a rotor

#191
20070068015
2007-03-29

Angle measurement device

#192
20070021897
2007-01-25

Speedometer and motor vehicle arrangement

#193
20060278022
2006-12-14

Rotation speed detection device and rolling bearing unit load measurement device

#194
20060266936
2006-11-30

Method of correcting speed of encoder and apparatus therefor

#195
20060190213
2006-08-24

Rotating speed detecting apparatus

#196
20060119348
2006-06-08

Technique for sensing the rotational speed and angular position of a rotating wheel

#197
20060091879
2006-05-04

Two-wire type current output sensor and IC therefor

#198
20060082460
2006-04-20

Method and apparatus for determining motor velocity using edge mode hysteresis with a finite impulse response average filter

#199
20060070430
2006-04-06

Method for measuring the rotational speed of a crankshaft

#200
20060069523
2006-03-30

Tire grip sensor and control system using the sensor

#201
20060064274
2006-03-23

Method and device for detecting a rotational speed, especially the rotational speed of the wheel of a vehicle

#202
20060021450
2006-02-02

Encoder failure detection

#203
20050288907
2005-12-29

Signal processing method and apparatus

#204
20050278136
2005-12-15

Method for detecting disturbances when determining the rotational speed of a rotor and evaluation circuit

#205
20050261868
2005-11-24

Device for detecting the speed and the position of a rotating shaft

#206
20050253541
2005-11-17

Method for measuring the rotational speed of an EC motor

#207
20050212508
2005-09-29

Extrapolation method for the angle-of-rotation position

#208
20050211002
2005-09-29

Rotation-detecting apparatus

#209
20050179429
2005-08-18

Method and device for the detection of local displacements and rotations

#210
20050179409
2005-08-18

Opening and closing body control device

#211
20050179317
2005-08-18

Device for detecting the wheel speed

#212
20050171724
2005-08-04

Method and device for detecting a rotational speed comprising an estimation of a measured value at low rotational speeds

#213
20050149292
2005-07-07

Method for detecting communication impulses of a fan motor and circuit arrangement for carrying out said method

#214
20050122098
2005-06-09

Method and assembly for determining rational speed with variable switching hysteresis

#215
20050120784
2005-06-09

Method for determining and compensating the geometric errors of a rotary encoder

#216
20050120782
2005-06-09

Engine rotation information detection device

#217
20050077851
2005-04-14

Motor rotation rate detecting circuit and motor driving device

#218
20050075827
2005-04-07

Vehicle wheel speed calculation device and anti-skid braking control apparatus provided therewith

#219
20050066749
2005-03-31

Rotation detecting device

#220
20050061064
2005-03-24

Methods and devices for determining a correction value for a measured segment time

#221
20050033547
2005-02-10

Rotational speed detector with ripple compensation

#222
16055554
2019-08-13

Resistive short circuit immunity for wheel speed sensor interface on braking system

#223
15370737
2021-01-05

Velocity determination system and method