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Duty Cycle patents



      
           
This page is updated frequently with new Duty Cycle-related patent applications. Subscribe to the Duty Cycle RSS feed to automatically get the update: related Duty RSS feeds. RSS updates for this page: Duty Cycle RSS RSS


Welding power supply with digital controller

Illinois Tool Works

Welding power supply with digital controller

Continental Teves Ag & Ohg

Method and circuit arrangement for limiting peak currents and the slope of the current edges

Date/App# patent app List of recent Duty Cycle-related patents
02/26/15
20150055375
 Controlling a switched mode power supply with maximised power efficiency patent thumbnailnew patent Controlling a switched mode power supply with maximised power efficiency
A control circuit, that controls the duty cycle of a switched mode power supply, comprises a reference voltage generator that, responsive to the input voltage exceeding a threshold value, generates a predetermined reference signal. Responsive to the input voltage not exceeding the threshold value, the reference voltage generator receives a signal indicative of an input voltage of the switched mode power supply and generates a variable reference signal dependent upon the input voltage.
Telefonaktiebolaget L M Ericsson (publ)
02/26/15
20150054430
 Method and circuit arrangement for limiting peak currents and the slope of the current edges patent thumbnailnew patent Method and circuit arrangement for limiting peak currents and the slope of the current edges
A method for limiting peak currents, particularly depending on a charge quantity provided by a voltage source, and the maximum pitch of the current flanks of an electric motor for an electrohydraulic motor vehicle brake system, particularly a pump motor, controlled by pulse width modulation, wherein a change to an actual duty cycle of the pwm is made by a first duty cycle of the pwm on a second duty cycle at runtime, wherein the change takes place according to a positive or negative pitch value calculated and/or changeable at runtime. The invention further describes an electronic circuit arrangement for the implementation of a method for limiting peak currents and the maximum pitch of current flanks..
Continental Teves Ag & Co. Ohg
02/26/15
20150053661
 Welding power supply with digital controller patent thumbnailnew patent Welding power supply with digital controller
A welding power supply including power conversion circuitry adapted to receive a primary source of power, to utilize one or more power semiconductor switches to chop the primary source of power, and to convert the chopped power to a welding output is provided. The provided welding power supply includes a pulse width modulated (pwm) digital controller including gate drive circuitry that generates a pwm output signal that controls the switching of the one or more power semiconductor switches.
Illinois Tool Works Inc.
02/26/15
20150052905
 Pulse width modulation for control of late lean liquid injection velocity patent thumbnailnew patent Pulse width modulation for control of late lean liquid injection velocity
Systems and methods for pulse-width modulation of late lean liquid injection velocity can be provided by certain embodiments of the disclosure. In one embodiment, a gas turbine combustor utilizing a late lean injection scheme can be provided, wherein the combustor can include a combustor liner and a transition piece.
General Electric Company
02/19/15
20150051560
 Controlling operation of a reduced pressure therapy system based on dynamic duty cycle threshold determination patent thumbnailControlling operation of a reduced pressure therapy system based on dynamic duty cycle threshold determination
Negative pressure wound therapy apparatuses and dressings, and systems and methods for operating such apparatuses for use with dressings are disclosed. In some embodiments, controlling the delivery of therapy can be based on monitoring and detecting various operating conditions.
Smith & Nephew Plc
02/19/15
20150051463
 Oximetry signal, pulse-pressure correlator patent thumbnailOximetry signal, pulse-pressure correlator
A system and method are provided for using an oximeter to take blood pressure readings for an extended period of time. Calibration of the oximeter for this purpose requires use of a sphygmomanometer to determine a sequence of blood pressure readings taken for a patient over a sphygmomanometer duty cycle.
02/19/15
20150049519
 Single switch infinite-level power inverters patent thumbnailSingle switch infinite-level power inverters
An electrical power converter includes a circuit with a single switching transistor that is electrically connected to a direct current power source, a first inductor-capacitor (lc) circuit electrically connected to the single switching transistor, a second lc circuit electrically connected to the first lc circuit and configured to provide an output signal to a load. A controller is operatively connected to the single switching transistor.
Indiana University Research & Technology Corporation
02/19/15
20150048871
 Reference-frequency-insensitive phase locked loop patent thumbnailReference-frequency-insensitive phase locked loop
A phase locked loop may be operable to generate, utilizing a frequency doubler, a reference clock signal whose frequency is twice a frequency of a crystal clock signal and is keyed on both rising and falling edges of the crystal clock signal. The phase locked loop may enable usage of both rising and falling edges of the crystal clock signal, based on the generated reference clock signal.
Maxlinear, Inc.
02/19/15
20150048808
 Voltage boosting circuit capable of modulating duty cycle automatically patent thumbnailVoltage boosting circuit capable of modulating duty cycle automatically
The present invention relates to a voltage boosting circuit capable of modulating duty cycle automatically, which comprises an inductor, a switching module, and a control circuit. The inductor is coupled to an input for receiving an input power.
Sitronix Technology Corp.
02/19/15
20150047345
 Method and system of cleaning a control valve patent thumbnailMethod and system of cleaning a control valve
A method and system of cleaning a turbocharger bypass control valve, the control valve being operable to vary the position of a bypass valve and thereby vary the amount of flow bypass across a turbine and/or compressor of a turbocharger for an engine. The method comprises: determining whether the control valve may require cleaning; adjusting the duty cycle of the shuttle so as to increase a flow of fluid through the control valve and clean the control valve; and adjusting a throttle position of the engine and thus the engine torque output to compensate for the adjustment in the amount of boost provided by the turbocharger..
Ford Global Technologies , Llc
02/19/15
20150047344

Engine control method and system


The present invention provides an engine control method, for each duty cycle of the engine, said method comprises: receiving a boost pressure of an engine turbocharger; receiving an engine speed; looking up a static control parameter lookup table according to the engine speed and boost pressure so as to select a control parameter indicating the air flow requirement; and sending the selected control parameter to an engine control unit so as to control the engine using the air flow requirement indicated by said control parameter.. .
Honeywell International Inc.
02/12/15
20150043627

Noise detection circuit, delay locked loop and duty cycle corrector including the same


A noise detection circuit includes a first delay unit suitable for delaying a periodic wave to output a delayed periodic wave, a first divider unit suitable for dividing the delayed periodic wave to output a first periodic wave, a second divider unit suitable for dividing the periodic wave to output a divided periodic wave, a second delay unit suitable for delaying the divided periodic wave to output a second periodic wave, and a detection unit suitable for comparing the first periodic wave with the second periodic wave and outputting a noise detection signal.. .
Sk Hynix Inc.
02/12/15
20150043161

Thermal energy storage, dissipation and emi suppression for integrated circuits using porous graphite sheets and phase change material


Mobile platforms and methods may provide for an integrated circuit such as a system on chip (soc), a first heat spreader thermally coupled to the integrated circuit and a phase change material configuration thermally coupled to the first heat spreader. The integrated circuit may include logic to operate the integrated circuit in a performance burst mode according to a duty cycle, wherein the performance burst mode causes a phase change material to enter a liquid state within a graphite matrix of the phase change material configuration..
02/12/15
20150041659

System and return beam metrology with optical switch


Extreme ultraviolet light (euv) is produced in a laser-produced plasma (lpp) euv light source when laser light strikes a target. Measuring reflected light from the target by a return beam diagnostics (rbd) module provides data on euv production, including but not limited to target position, target focus, target shape, and target profile.
Cymer, Llc
02/05/15
20150036833

Method and device for testing a loudspeaker arrangement


A loudspeaker arrangement includes a loudspeaker and a trigger circuit for electrically triggering the loudspeaker. The loudspeaker has a loudspeaker diaphragm for generating an acoustic signal.
02/05/15
20150036123

Apparatus for sensor with improved power consumption and associated methods


A sensor includes a coil suspended in a magnetic field, and a light source to produce a light output in response to a current, wherein a duty cycle and/or pulse-repetition frequency of the current is configurable. The sensor further includes an optical detector to use the light output of the light source to detect displacement of the coil in response to a stimulus..
Silicon Audio Seismic, Llc
02/05/15
20150035876

Independent color stretch in color-sequential displays


Independent color stretch is an improved method for “stretching” the color sequence utilized in color-sequential displays using switchable light sources, such as led or laser, to match the frame rate of the video source. It utilizes a stretch factor that is directly proportional to the sequence duration to simplify the calculation of stretch factors and allow them to be combined.
Brass Roots Technologies, Llc
02/05/15
20150035570

Clock doubler including duty cycle correction


Exemplary embodiments are related to a clock doubler. A device may include a duty cycle correction circuit configured to receive an input clock signal and convey a corrected clock signal.
Qualcomm Incorporated
02/05/15
20150035504

Switching regulator input current sensing circuit, system, and method


A buck switching regulator includes first buck switching regulator circuitry is operable to generate a first output voltage from an input voltage and operable to generate a first sensed voltage having a value that is proportional to an output current being provided by the first buck switching regulator circuitry. The first buck switching regulator circuitry receives an input current and operates at a first duty cycle determined by a duty cycle signal.
Intersil Americas Llc
02/05/15
20150035363

Performance and isolation improvements for digitally controlled ac attenuation and protection circuits


A protection and attenuation circuit for sensitive ac loads is described. The circuit provides ac power protection and attenuation utilizing high-efficiency switch-mode techniques to attenuate an ac power signal by incorporating a bidirectional, transistorized switch driven from a pulse width modulation signal, pwm.
Butler Engineering Llc
02/05/15
20150034820

Continuous operation high speed ion trap mass spectrometer


The present disclosure discusses a system and method for continuous operation of an ion trap mass spectrometer. The described system does not introduce ions into the ion trap in distinct trapping phase, rather the described system continuously injects ions into the ion trap while continuously scanning out the ions.
Mini-mass Counseling
02/05/15
20150034818

Discontinuous atmospheric pressure interface


A method of interfacing atmospheric pressure ion sources, including electrospray and desorption electrospray ionization sources, to mass spectrometers, for example miniature mass spectrometers, in which the ionized sample is discontinuously introduced into the mass spectrometer. Discontinuous introduction improves the match between the pumping capacity of the instrument and the volume of atmospheric pressure gas that contains the ionized sample.
Purdue Research Foundation
01/29/15
20150033041

Power supply circuit for central processing unit


A power supply circuit applied to a central processing unit (cpu) of a computer includes a pulse width modulation (pwm) controller, a control circuit, a first switch circuit, a second switch circuit, a first compensation circuit, a second compensation circuit, a first power circuit, and a second power circuit. When the computer is turned on, the pwm controller regulates duty cycles of pulse signals and outputs the regulated pulse signals to the first and second power circuits according to a first compensation signal, to provide a stable voltage to the cpu.
Hon Hai Precision Industry Co., Ltd.
01/29/15
20150032311

Three-phase inverter control for electrified vehicles


Techniques are presented for more efficient three-phase inverter control for electrified vehicles (evs). The techniques can be executed by a controller of an ev that includes one or more processors.
01/29/15
20150029760

Voltage feed-forward compensation and voltage feedback compensation for switched mode power supplies


A digital control unit generates a control signal to control a duty cycle of a switched mode power supply such that a faster response to an input voltage transient is achieved. The digital control unit comprises a feedback compensator, a feed forward compensator, a transient detector, and a controller.
Telefonaktiebolaget L M Ericsson (publ)
01/29/15
20150028840

Control of an inductive load by pulse width modulation


Method and device for controlling an inductive load by pulse width modulation, on the basis of a periodic set point control signal having a given set point duty cycle. The set point control signal is, in each period of the set point control signal, in a first logic state determined from the high and low logic states for at least a first duration, and is in the other logic state during the rest of the period.
Continental Automotive France
01/29/15
20150028832

Switching regulator circuits and methods


The present disclosure includes switching regulator circuits and methods. In one embodiment, multiple switching regulator stages are coupled to an output.
Gazelle Semiconductor, Inc.
01/29/15
20150028769

Driver circuit for at least one load and operating the same


A driver circuit (1) for operating at least one load, such as a led unit (7) is provided, comprising an input (2) for receiving an input voltage (v in) from a power supply (6), an output (3) for providing an output voltage (v out) to said load and a switching converter (4) with at least a storage inductor (11) connected with a switching device (13), said switching converter (4) being disposed to generate an average output current by sequential switching operation of said switching device (13) between at least a charging mode and a discharging mode. Furthermore, a switching controller (5) is connected with said switching device (13) to control the switching operation of said switching device (13) and comprises a feedback inductor (24), inductively coupled to said storage inductor (11) to provide a feedback voltage, corresponding to the variation of an inductor current (i s) through said storage inductor (11) and a voltage compensation circuit (25), connected with said feedback inductor (24) to determine at least one compensation signal from said feedback voltage, said compensation signal corresponding to said input voltage (v in) or said output voltage (v out).
Koninklijke Philips N.v.
01/22/15
20150025521

Electrosurgical generators


An electrosurgical generator is provided. The electrosurgical generator includes at least one converter configured to output a dc waveform and a nonlinear carrier control current.
Covidien Lp
01/22/15
20150022136

Device, controlling rotation speed of motor


The present application discloses a device, method and system for controlling a rotation speed of a motor. The device includes: a reference voltage generating module generating a reference voltage; a pwm signal converting module converting a pwm signal into a voltage signal; a first comparator outputting a first level or a second level; a first switching element having a control terminal connected with an output terminal of the first comparator and a first terminal input with a first signal, and being turned on when receiving the second level and being turned off when receiving the first level; a follower having an input terminal connected with the pwm signal converting module; and a control signal outputting terminal outputting the first signal or the voltage signal.
Delta Electronics (dongguan) Co., Ltd.
01/22/15
20150022103

Light emitting diode driving apparatus and light emitting diode driving method


A light emitting diode (led) driving apparatus and an led driving method suitable for driving an led load are provided. The led driving apparatus includes a driving circuit, a feedback circuit, and a control chip.
Beyond Innovation Technology Co., Ltd.
01/22/15
20150021471

Electrostatic mass spectrometer with encoded frequent pulses


A method, apparatus and algorithms are disclosed for operating an open electrostatic trap (e-trap) or a multi-pass tof mass spectrometer with an extended flight path. A string of start pulses with non equal time intervals is employed for triggering ion packet injection into the analyzer, a long spectrum is acquired to accept ions from the entire string and a true spectrum is reconstructed by eliminating or accounting overlapping signals at the data analysis stage while using logical analysis of peak groups.
Leco Corporation
01/15/15
20150019030

Bias setting in a scent delivery system


A scent delivery system includes scent delivery units that are configured to deliver scent at a variable scent level by being turned on and off successively according to a variable duty cycle. The scent delivery units are associated with corresponding base scent settings.
Scentair Technologies, Inc.
01/15/15
20150016492

Signal filtering


A signal filter (100) comprises a first transferred impedance filter, tif, (tifa) having four differential signal paths (pa,1, pa,2, pa,3, pa,4) and a second tif (tifb) having four differential signal paths (pb,1, pb,2, pb,3, pb,4)−. A first differential signal port of the first tif (32a) is coupled to a first differential signal port of the second tif (32b).
St-ericsson Sa
01/15/15
20150016162

Photovoltaic inverter with swinging line filter inductors


The invention is a high efficiency single-phase or poly-phase dc-to-ac power converter apparatus and power conversion method which includes a line filter inductor or line filter inductors to integrate or filter pulse modulated waveforms into substantially sinusoidal waveforms wherein (i) the line filter inductor or inductors have inductance values that swing substantially from zero current to peak rated current and (ii) a pulse width modulation technique is used that varies both pulse width modulation duty cycles and periods as a function of the predicted instantaneous line filter inductance and the predicted di/dt across the line filter inductor or inductors in order to minimize power converter switching losses while maintaining ac power quality. With the invention, substantial cec power conversion efficiency enhancements should be achievable and with an overall reduction in power converter parts cost..
Renewable Power Conversion, Inc.
01/15/15
20150015315

Method and duty cycle distortion compensation


A method and apparatus for duty cycle distortion compensation is disclosed. In one embodiment, an integrated circuit includes a differential signal transmitter having a main data path and a compensation data path.
Oracle International Corporation
01/15/15
20150015312

Integer frequency divider and programmable frequency divider capable of achieving 50% duty cycle


An integer frequency divider capable of achieving a 50% duty cycle includes a source clock input end that provides a source clock, and two or more latches connected in series according to a connection order. Each of the latches includes: a signal input stage, configured to receive an input signal; a clock receiving stage, configured to treat the source clock as an input clock and an inverted clock of the source clock as an inverted signal of the input clock when the latch corresponds to an odd number in the connection order, and to treat the inverted clock as the input clock and the source clock as the inverted signal of the input clock when the latch corresponds to an even number in the connection order; and a signal output stage, configured to output an output signal according to the input signal and the source clock..
Mstar Semiconductor, Inc.
01/15/15
20150015214

Active vibration damping using alternator


A method of performing active vibration damping in a front end accessory drive (fead) system of an automobile using an alternator of the fead system and an alternator are described. The method includes determining a resonance to be counteracted, determining a counteracting forcing function to counteract the resonance, and determining a duty cycle change to apply to a field voltage to obtain an output voltage with the counteracting forcing function, wherein the field voltage results in a field current supplied to a rotor that causes a stator to generate the output voltage.
Remy Technologies, L.l.c.
01/15/15
20150015088

Capacitive dc power transformer


The present document relates to power transformers for electronic computing devices. In particular, a power converter configured to convert electrical power at a dc input voltage vin into electrical power at a dc output voltage is described.
Dialog Semiconductor Gmbh
01/15/15
20150015064

Boost converter deadtime compensation


A hybrid powertrain system may include an electric machine, a battery back, a boost converter and at least one controller. The boost converter may include an inductor and be configured to receive input voltage from the battery back and provide an output voltage to the electric machine.
Ford Global Technologies, Llc
01/15/15
20150014357

System and generating a drive signal


A method and computer program product for defining a pwm drive signal having a defined voltage potential. The pwm drive signal has a plurality of “on” portions and a plurality of “off” portions that define a first duty cycle for regulating, at least in part, a flow rate of a pump assembly.
Deka Products Limited Partnership
01/08/15
20150012056

Implantable electroacupuncture device for reducing hypertension


Disclosed is an implantable, coin-sized, self-contained, leadless electroacupuncture (ea) device having at least two electrode contacts attached to the surface of its housing. The electrodes include a central cathode electrode on a bottom side of the housing, and a circumferential anode electrode that surrounds the cathode electrode.
Valencia Technologies Corporation
01/08/15
20150012055

Method for reducing hypertension using an implantable electroacupuncture device


Disclosed is an implantable, coin-sized, self-contained, leadless electroacupuncture (ea) device having at least two electrode contacts attached to the surface of its housing. The electrodes include a central cathode electrode on a bottom side of the housing, and a circumferential anode electrode that surrounds the cathode electrode.
Valencia Technologies Corporation
01/08/15
20150009720

Method and controlling the maximum output power of a power converter


An example control circuit for use in a power converter includes an input voltage sensor, a current sensor, and a drive signal generator. The input voltage sensor generates a first signal representative of an input voltage (vin) of the power converter.
Power Integrations, Inc.
01/08/15
20150009239

Display device


A display device includes a backlight module, a backlight control module and a flicker removing module. The backlight module electrically connected between an input pin and an output pin which belong to the backlight control module, provides a backlight source to a display panel.
Micro-star Int'l Co., Ltd.
01/08/15
20150009073

System and physically detecting, identifying, diagnosing and geolocating electronic devices connectable to a network


An emissions detection apparatus for at least one of detecting, identifying, diagnosing and geolocating an electronic device or an information transmitted from the electronic device includes an emissions collections device connected to an antenna receiving emission of an electromagnetic energy emitted from the electronic device and collecting a spectral data emitted from the electronic device; one or more algorithms processing the collected spectral data, algorithms selected from a group consisting of a peak detection algorithm, a multiple peak detection algorithm, a harmonic correlation algorithm, a non-harmonic correlation algorithm, a time correlation algorithm, a phase correlation algorithm, and a duty cycle timing correlation algorithm; and one or more algorithms matching the processed spectral data to an emissions template, wherein a match of the processed spectral data with the emissions template at least one of detects, identifies, diagnoses and geolocates the electronic device or the information transmitted from the electronic device.. .
01/08/15
20150008968

Apparatuses and methods for phase interpolating clock signals and for providing duty cycle corrected clock signals


Apparatuses and methods for phase interpolating clock signals and for providing duty cycle corrected clock signals are described. An example apparatus includes a first inverter configured to receive first and second clock signals and further includes a second inverter configured to receive the first and second clock signals.
Micron Technology, Inc.
01/08/15
20150008895

Current mode dc-dc conversion device with fast transient response


A current mode dc-dc conversion device with fast transient response is provided. The device includes a dc-dc converter, a pulse width control unit, a current feedback circuit, a fast transient feedback circuit, a first error amplifier, an adder, and a comparator.
Anpec Electronics Corporation
01/08/15
20150008867

Charge pump battery charging


Charge pump battery charging is disclosed. Charge pump battery charging can include accumulating charge on a charge storage device.
At&t Intellectual Property I, L.p.
01/01/15
20150005841

Transdermal electrical stimulation devices for modifying or inducing cognitive state


Portable transdermal electrical stimulation (tes) applicators for modifying a subject's cognitive state. In general, the portable applicators described are specifically configured and adapted to be lightweight and may be wearable, and to deliver a high-intensity tes able to evoke or enhance a predetermined cognitive effect.
01/01/15
20150003119

Current limit module and control module for power converters and associated method


A power converter having a current limit module and a method for controlling the power converter. The power converter converts an input voltage to an output voltage based at least on driving a main switch to switch on and off and regulates the output voltage through regulating a duty cycle of the main switch.
Chengdu Monolithic Power Systems Co., Ltd.
01/01/15
20150003116

Control of transformer flux density in an isolated switched mode power supply


A control circuit generates a control signal to control a duty cycle of a switched mode power supply such that the magnetic flux density in the transformer is balanced, thereby preventing saturation of the transformer core. This permits the use of unsymmetrical duty cycles within the switch cycle.
Telefonaktiebolaget L M Ericsson (publ)
01/01/15
20150002201

Semiconductor device having duty correction circuit


Disclosed herein is a device includes a duty correction circuit adjusting a duty ratio of a first clock signal based on a duty control signal to generate a second clock signal; a delay line delaying the second clock signal to generate a third clock signal; and a duty cycle detector detecting the duty ratio of the second clock signal to generate the duty control signal in a first mode, and detecting the duty ratio of the third clock signal to generate the duty control signal in a second mode.. .
Micron Technology, Inc.
01/01/15
20150002120

Adjustment circuit and electronic device thereof


An electronic device includes a power supply, a switching element, and an adjustment circuit. The power supply provides a working voltage to the adjustment circuit.
Hong Fu Jin Precision Industry (shenzhen) Co., Ltd.
01/01/15
20150002025

Lighting assembly, apparatus and associated maintaining light intensities


In accordance with one embodiment, a lighting assembly is provided. The lighting assembly includes a first light unit configured to operate at a first duty cycle and a second light unit configured to operate at a second duty cycle.
General Electric Company
12/25/14
20140378077

Down-conversion circuit


A down-conversion circuit for a receiver circuit is disclosed, the down-conversion circuit comprises a first passive switching mixer arranged to down-convert a received radio frequency, rf, signal with a first local oscillator, lo, signal (lo1) having a first duty cycle for generating a first down-converted signal at an output port of the first passive switching mixer. The down-conversion circuit further comprises a second passive switching mixer arranged to down-convert the received rf signal with a second lo signal (lo2) having the same lo frequency as the first lo signal (lo1) and a second duty cycle, different from the first duty cycle, for generating a second down-converted signal at an output port of the second passive switching mixer.
Teelfonaktiebolaget L M Ericsson (publ)
12/25/14
20140376683

Dynamic divider having interlocking circuit


A high-speed and low power divider includes a ring of four dynamic latches, an interlocking circuit, and four output inverters. Each latch has a first dynamic node m and a second dynamic node n.
Qualcomm Incorporated
12/25/14
20140376430

Managing power consumption of transmission circuitry in a wireless communication device


Methods, apparatuses and computer readable media are described that manage transmit power levels for a wireless device connected to a network access system of a wireless network. Processing circuitry in the wireless device obtains a target average transmit power level.
Apple Inc.
12/25/14
20140376268

Metal working power supply converter system and method


A power supply for welding, cutting and similar operations includes a dual two-switch forward converter. The converter has two inverter circuits coupled in parallel but controlled to provide output power in an interleaved fashion.
Illinois Tool Works Inc.
12/25/14
20140376143

Power supply fuse alarm circuit and alarm apparatus


The present invention provides a power supply fuse alarm circuit and an alarm apparatus, where the alarm circuit is connected to a power access module of multiple combined paths and includes multiple groups of alarm units, and each of the alarm units includes: a voltage step-down module, which performs step-down processing on a voltage provided by the power access module, to output a working voltage applicable to the alarm circuit; a control module, which outputs a pulse control signal with a certain duty cycle in a case of normal power supply; a power consumption module, which generates an alarm blowing current according to the pulse control signal, so that the alarm blowing current serves as a virtual load to blow an alarm fuse by using the alarm blowing current after a main fuse is blown; and a protection module, which disconnects the power consumption module after a control circuit fails.. .
Huawei Technologies Co., Ltd.
12/25/14
20140375679

Dual duty cycle oled to enable dynamic control for reduced motion blur control with constant brightness in augmented reality experiences


A head-mounted display (hmd) device is provided with reduced motion blur by reducing row duty cycle for an organic light-emitting diode (led) panel as a function of a detected movement of a user's head. Further, a panel duty cycle of the panel is increased in concert with the decrease in the row duty cycle to maintain a constant brightness.
12/25/14
20140375363

Frequency divider with duty cycle adjustment within feedback loop


A frequency divider with duty cycle adjustment within a feedback loop is disclosed. In an exemplary design, an apparatus includes at least one divider circuit and at least one duty cycle adjustment circuit coupled in a feedback loop.
Qualcomm Incorporated
12/25/14
20140374398

Welding power supply extended range system and method


A power supply for welding, cutting and similar operations includes one or more power converters that are controlled by pwm signals applied by control circuitry. The signals may be applied for a period greater than 50% duty cycle.
Illinois Tool Works Inc.
12/18/14
20140371731

Electronic ophthalmoscope for selective retinal photodisruption of the photoreceptor mosaic


An electronic slo/oct ophthalmoscope is equipped with a femtosecond (fs) laser for intra- or preretinal therapeutic use in the posterior segment of the eye. In one application the retina photoreceptor mosaic or bruch's membrane is disrupted in such pattern that minimizes loss of visual functioning but reduces metabolic load of the outer retina.
12/18/14
20140370833

Down-conversion circuit with interference detection


A down-conversion circuit for a receiver circuit is disclosed. It comprises a first mixer arranged to down-convert an rf signal with a first lo signal (lo1), thereby generating a first down-converted signal.
Telefonaktiebolaget L M Ericsson (publ)
12/18/14
20140368244

Apparatuses and methods for duty cycle adjustment


Apparatuses and methods for duty cycle adjustment are disclosed herein. An example apparatus may include a node, a phase mixer, and a duty cycle adjuster circuit.
Micron Technology, Inc.
12/18/14
20140368222

Capacitive proximity detection using delta-sigma conversion


Capacitive proximity detection is provided by combining a delta-sigma modulator and a capacitive voltage divider circuit to create a high resolution capacitive-to-digital converter. Period and duty cycle counters provide duty cycle ratios from the delta-sigma modulator for comparison of changes in capacitance values of a capacitive sensor when an object is in proximity thereto..
Microchip Technology Incorporated
12/18/14
20140368139

Controller for a brushless motor


A controller for a brushless motor that includes a pwm module configured in half-bridge or full-bridge mode. The pwm module outputs control signals for controlling the excitation of a winding of the motor, and one of the duty cycle and the period of the pwm module defines a time at which the winding is commutated..
Dyson Technology Limited
12/18/14
20140367270

Systems and methods for controlling electrochemical processes


A system is disclosed for controlling an electrochemical process. The system has a power source that is coupled to a power amplifier.
12/18/14
20140367131

Performance regulation for a personal care appliance


The compensating/performance regulation system includes a power skin brush having a handle, an oscillating brushhead workpiece and a drive system, wherein the brushhead workpiece has an rfid tag. An rfid reader is provided in the handle and is responsive to the rfid tag moving past the reader to produce an indication of use of the brushhead.
L'oréal


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Duty Cycle topics: Duty Cycle, Computer Program, Distributed, Buffer Circuit, Integrated Circuit, Differential Amplifier, Duty Cycle Correction, Ultrasonic, Reference Voltage, Thermostat, Modulation, Wireless Power, Calculator, Control Unit, Bridge Inverter

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This listing is a sample listing of patent applications related to Duty Cycle for is only meant as a recent sample of applications filed, not a comprehensive history. There may be associated servicemarks and trademarks related to these patents. Please check with patent attorney if you need further assistance or plan to use for business purposes. This patent data is also published to the public by the USPTO and available for free on their website. Note that there may be alternative spellings for Duty Cycle with additional patents listed. Browse our RSS directory or Search for other possible listings.
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