Popular terms

[SEARCH]

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

Follow us on Twitter
twitter icon@FreshPatents

Web & Computing
Cloud Computing
Ecommerce
Search patents
Smartphone patents
Social Media patents
Video patents
Website patents
Web Server
Android patents
Copyright patents
Database patents
Programming patents
Wearable Computing
Webcam patents

Web Companies
Apple patents
Google patents
Adobe patents
Ebay patents
Oracle patents
Yahoo patents

[SEARCH]

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


Method and system for supporting the discovery of synchronized clusters of mobile stations in a wireless communication…

Nec Europe

Method and system for supporting the discovery of synchronized clusters of mobile stations in a wireless communication…

Duty cycle controller

Allegro Microsystems

Duty cycle controller

Duty cycle controller

Sony

Reception circuit, and reception apparatus


Date/App# patent app List of recent Duty Cycle-related patents
08/27/15
20150245446 
 Lighting  controlling lighting apparatus using ambient light levels patent thumbnailLighting controlling lighting apparatus using ambient light levels
The present invention is directed to lighting apparatus and methods for controlling lighting apparatus using ambient light levels. A controller within a lighting apparatus is used to activate and deactivate one or more light radiating devices within a duty cycle.
Arkalumen Inc.


08/27/15
20150245305 
 Method and system for supporting the discovery of synchronized clusters of mobile stations in a wireless communication network patent thumbnailMethod and system for supporting the discovery of synchronized clusters of mobile stations in a wireless communication network
A method for supporting the discovery of synchronized clusters (4) of mobile stations (3) in a wireless communication network (1), wherein a synchronized cluster (4) includes a number of mobile stations (3) that periodically wake up according to a common duty cycle, is characterized in that at least one mobile station (3) of a synchronized cluster (4)—announcement master (6)—transmits advertising messages announcing the existence of said cluster (4) to potential scanning devices (5) that try to discover said cluster (4), wherein an independent infrastructure including a plurality of access points (2) which transmit beacon frames on a regular basis is employed as external synchronization source in that said announcement master (6) as well as potential scanning devices (5) apply predefined rules to derive from information contained in the beacon frames transmitted by access points (2) of said independent infrastructure time slots of said advertising messages, which are used as common rendezvous points. Furthermore, a corresponding system is disclosed..
Nec Europe Ltd.


08/27/15
20150244353 
 Duty cycle controller patent thumbnailDuty cycle controller
In one aspect, a duty cycle controller includes a first port configured to receive a voltage bias signal, a second port configured to receive an input voltage signal, a third port configured to provide an output signal of the duty cycle controller having a duty cycle and a n-bit digital-to-analog converter (dac) configured to receive the voltage bias signal and to provide a dac output signal to a comparator. The dac output signal has a peak value.
Allegro Microsystems, Llc


08/27/15
20150244321 
 Reception circuit, and reception apparatus patent thumbnailReception circuit, and reception apparatus
There is provided a reception circuit that includes a local signal generation section, a duty-cycle correction section, an oscillation signal generation section, and a mixture section. The local signal generation section is configured to generate a local signal, the local signal being different in frequency from a modulated reception signal.
Sony Corporation


08/27/15
20150244281 
 Converter circuit with adjustable dc bus voltage patent thumbnailConverter circuit with adjustable dc bus voltage
A method for controlling voltage of a dc bus in a converter circuit is provided. The method includes monitoring a duty cycle of a switch that connects a resistive circuit across the dc bus, the switch being closed when the dc bus voltage reaches an upper voltage value and opened when the dc bus voltage reaches a lower voltage value and altering the lower voltage value based upon the duty cycle of the switch..
Rockwell Automation Technologies, Inc.


08/27/15
20150244270 
 Intermediate bus architecture power supply patent thumbnailIntermediate bus architecture power supply
An intermediate bus architecture power supply system including an output voltage feedback-regulated, isolated first stage switching voltage converter (svc) such as an intermediate bus converter, connected via an intermediate voltage bus (ivb) to at least one second stage dc-to-dc voltage converter. The first stage svc is configured to adjust its switching duty cycle to compensate for voltage fluctuations on the ivb.
Telefonaktiebolaget L M Ericsson (publ)


08/27/15
20150244247 
 Inverter apparatus capable of controlling burst mode operation and control method thereof patent thumbnailInverter apparatus capable of controlling burst mode operation and control method thereof
An inverter apparatus is provided. The inverter apparatus includes a direct current to direct current (dc/dc) converter, a direct current to alternating current (dc/ac) converter and a control circuit.
Fsp Technology Inc.


08/27/15
20150242210 
 Monitoring vector lane duty cycle for dynamic optimization patent thumbnailMonitoring vector lane duty cycle for dynamic optimization
In an embodiment, a processor includes a vector execution unit having a plurality of lanes to execute operations on vector operands, a performance monitor coupled to the vector execution unit to maintain information regarding an activity level of the lanes, and a control logic coupled to the performance monitor to control power consumption of the vector execution unit based at least in part on the activity level of at least some of the lanes. Other embodiments are described and claimed..

08/27/15
20150240771 
 Methods for determining fuel bulk modulus in a high-pressure pump patent thumbnailMethods for determining fuel bulk modulus in a high-pressure pump
Methods are provided for finding the bulk modulus of a fuel used in the direct injection system of an internal combustion engine. A method is needed to continuously monitor and reliably calculate the fuel's bulk modulus during engine operation on-board the vehicle, where the fuel's bulk modulus may be used to infer the ratio of fuels in a fuel mixture or determine the density of supercritical propane when propane is used as the injected fuel.
Ford Global Technologies, Llc


08/27/15
20150240769 
 Methods for correcting spill valve timing error of a high pressure pump patent thumbnailMethods for correcting spill valve timing error of a high pressure pump
Methods are provided for correct spill valve timing of a high pressure pump coupled to the direct injection system of an internal combustion engine. A method is needed to monitor and adjust spill valve timing on-board the vehicle, where spill valve timing error may result from sensors error and/or time between command signal and actuation response of the spill valve.
Ford Global Technologies, Llc


08/27/15
20150237916 

Device and controlling an electrical heater to limit temperature


There is provided a method of controlling an electrical heating element, including maintaining a temperature of the heating element at a target temperature by supplying pulses of electrical current to the heating element; monitoring a duty cycle of the pulses of electrical current; and determining if the duty cycle differs from an expected duty cycle or range of duty cycles, and if so, reducing the target temperature, or stopping the supply of current to the heating element or limiting the duty cycle of the pulses of electrical current supplied to the heating element. As the temperature is maintained at a known target temperature, any variation in the duty cycle or range of duty cycles expected to maintain the target temperature is indicative of abnormal conditions..
Philip Morris Products S.a.


08/20/15
20150237647 

Methods and arrangements to schedule communications


Logic may allocate time slots in a schedule with consideration of thermal dissipation capacities of non-pcp devices. Logic may determine the failure to use a full time slot allocation by a non-pcp device when the non-pcp device has more data to transmit.

08/20/15
20150236628 

Discontinuous pulse width modulation


A discontinuous pulse width modulation technique is used in a controller to control an inverter that converts dc battery power to ac power to operate an electric motor, e.g., in a hybrid electric vehicle. The discontinuous pulse width modulation technique uses only one of the two zero state voltage vectors in its calculations whereas traditional pulse width modulation uses both zero state voltage vectors.
Ford Global Technologies, Llc


08/20/15
20150236596 

Dc-dc conversion circuit and method


According to the dc-dc conversion circuit and conversion method, variation of an input voltage is reflected by detecting a voltage at a secondary winding of a transformer, a reference voltage is adjusted by using the detected input voltage signal, a feedback voltage signal is compared with the reference voltage, a duty cycle control signal is adjusted according to a comparison result, and conduction and shutting-down of switching transistors are controlled according to the duty cycle control signal to adjust an output voltage of the dc-dc conversion circuit, so as to enable the output voltage to vary with the input voltage.. .
Huawei Technologies Co., Ltd.


08/20/15
20150236594 

Independent output control for single-inductor, bipolar outputs, buck-boost converters


A method of driving a power stage configured to provide both positive output voltage higher than a first potential to a positive output and negative output voltage to a negative output, the method comprising:—generating a first control signal;—generating a second control signal;—operating, the first control signal so as to initiate a charging phase, such that a first duty cycle of the first control signal is controlling an amount of energy to be accumulated;—operating, simultaneously, at the control signals so as to initiate an independent discharging phase of the accumulated energy, in a boost-type to the positive output or in a buck-type or boost-type to the negative output, such that a second and third duty cycles of the second an third control signals are controlling an amount of energy to be discharged.. .
St-ericsson Sa


08/20/15
20150236588 

Independent output control for single-inductor, bipolar outputs, buck-boost converters


A method of driving a power stage configured to provide both positive output voltage to a positive output and negative output voltage to a negative output, the method comprising: —generating a first control signal; —generating a second control signal; —operating, the first control signal so as to initiate a charging phase, such that a first duty cycle of the first control signal is controlling an amount of energy to be accumulated; —operating, simultaneously, the first control signal and the second control signal so as to initiate an independent discharging phase of the accumulated energy, in a buck-type or boost-type, to an output of the power stage such that a second duty cycle of the second control signal is controlling an amount of energy to be discharged.. .
St-ericsson Sa


08/20/15
20150236581 

Total harmonic current distortion control circuit and method thereof


A total harmonic current distortion (thdi) control circuit includes a power factor correction circuit and a control circuit. The power factor correction circuit includes a boost unit, an inverter unit, and a feedback unit.
Voltronic Power Technology Corp.


08/20/15
20150233853 

Method and circuit for evaluating a physical quantity detected by a sensor


A method for measuring a physical quantity with a, particularly inductive, sensor element and for providing a sensor output depending on the physical quantity. The sensor element is part of a resonant circuit whose attenuation depends on the physical quantity being measured.
Pepperl + Fuchs Gmbh


08/20/15
20150231030 

Implantable electroacupuncture system for treating cardiovascular disease


An implantable electroacupuncture device (iead) treats cardiovascular disease through application of stimulation pulses applied at at least one of acupoints ex-hn1, bl14, ht7, ht5, pc6, st36, li11, lu7, and lu2. The iead comprises an implantable, coin-sized, self-contained, leadless electroacupuncture device having at least two electrodes attached to an outside surface of its housing.
Valencia Technologies Corporation


08/13/15
20150229311 

Oscillator frequency divider with improved phase noise


A gated divider circuit includes a windowing unit configured to generate windowing waveforms from input oscillator waveforms having a fixed duty cycle. Additionally, the gated divider circuit includes a gated output unit coupled to the windowing unit and configured to provide selected ones of the input oscillator waveforms as controlled by corresponding selected ones of the windowing waveforms.
Nvidia Corporation


08/13/15
20150229253 

Fan control circuit


The present invention is to provide a fan control circuit, which includes a filter circuit for converting a pulse-width modulation (pwm) voltage signal into a dc voltage signal; an amplifier circuit having an input end for receiving the dc voltage signal and a static voltage signal and generating an amplified voltage signal at an output end thereof; a current expansion circuit configured to perform current expansion on the amplified voltage signal and thereby generate a driving voltage signal for a fan; and a feedback circuit connected between another input end of the amplifier circuit and an output end of the current expansion circuit so that magnitude of the driving voltage signal is in direct proportion to the duty cycle of the pwm voltage signal and is greater than or equal to a lowest driving voltage value of the fan when the duty cycle of the pwm voltage signal approaches zero.. .
Alpha Networks Inc.


08/13/15
20150229202 

Dc/dc power converter control strategy for source protection


A controller (11a) of a dc/dc converter (10a) responsive to power output of a fuel cell power plant (13) operates under a control strategy which determines if fuel cell voltage exceeds a limit, and if so, provided neither fuel cell output current nor dc/dc converter output current is excessive, causes an increase in dc/dc converter duty cycle to thereby increase power demanded from the fuel cell stack. This eliminates the need for conventional voltage limiting to protect fuel cells from corrosion.
Ballard Power Systems, Inc.


08/13/15
20150229200 

Dc/dc converter and method


A dc/dc converter having an inverter which accepts a dc input voltage, a rectifier that produces a dc output voltage, a resonant tank, and a controller. The inverter includes a first and second switch as does the rectifier.
Palo Alto Research Center Incorporated


08/13/15
20150229132 

Power receiving device and wireless power transfer device


A power-receiving device includes a secondary coil, which wirelessly receives ac power from a power-supply device having a primary coil, a variable load, in which an impedance changes in accordance with the power value of the input power, a pfc circuit having a first switching element, and a dc/dc converter having a second switching element. The pfc circuit rectifies the ac power received by the secondary coil and improves the power factor by adjusting the duty cycle in switching operation of the first switching element in accordance with the impedance fluctuation of the variable load.
Kabushiki Kaisha Toyota Jidoshokki


08/13/15
20150227255 

Systems and methods for determining types of user input


The embodiments described herein thus provide devices and methods that facilitate improved input devices. Specifically, the devices, systems and methods provide the ability to accurately determine user input using multiple different sensing regimes.
Synaptics Incorporated


08/13/15
20150226589 

X-ray based multiphase flow meter with energy resolving matrix detector


A method of x-ray based measurement of a multiphase flow components passing through a measurement tube comprises the steps of: directing a polychromatic photon beam generated by at least one x-ray source onto the measurement tube through which a multiphase flow is passed; locating a matrix detector behind the measurement tube along the beam, said matrix detector being a two-dimensional detecting structure comprising (mn) sensing elements and providing photon energy resolution, and exposing the measurement tube with multiphase flow by the x-ray pulses of a given duration and duty cycle; registering a polychromatic photon beam attenuated by said multiphase flow with an energy resolving matrix detector, whereas said matrix detector provides registration of a received photon beam according to different energy levels of the received photons and distribution of the received photons on energy levels according to spectral resolution of said matrix detector. A number of the energy levels registered by the matrix detector is defined as the ratio of maximum energy of the received photons to the spectral resolution of the array detector.
Siemens Aktiengesellschaft


08/06/15
20150223306 

Digital communication interface circuit for line-pair with duty cycle imbalance compensation


A circuit (200, 300, 400, 600, 700, 800) interfacing a device (20, 30, 40, 60, 80) with a line-pair includes: a diode bridge (210) having polarity-independent input terminals coupled to the line-pair; a galvanic isolation device (230, 330) receiving a transmit signal and coupling the transmit signal to its output; a variable edge delay circuit (270, 370, 572, 574, 576) that delays rising/falling edges of the transmit signal more than falling/rising edges of the transmit signal; a voltage-controlled variable resistance element (260, 360, 460) connected across output terminals of the diode bridge; and a filter connected to a control terminal of the voltage-controlled variable resistance element. The filter includes decoupled charge and discharge paths to decouple the rise time of the transmit signal from the fall time of the transmit signal.
Koninklijke Philips N.v.


08/06/15
20150222271 

Clock signal generator


A clock generator suitable for use with memory devices enables generation of memory clock signals having odd or even division ratios, an optional phase shift and a 50% duty cycle. First and second clock gate circuits receive a base clock signal and an inverted version thereof, respectively, and are both gated by the output of two comparators that are set when a value of a down counter receiving the base clock signal reaches a predetermined value.

08/06/15
20150222254 

Digital duty cycle correction


A digital duty-cycle correction circuit may include an adjustment unit that may be configured to adjust a duty cycle of an oscillating signal based on an adjust signal to generate an adjusted oscillating signal and a sampling unit that may be configured to sample the adjusted oscillating signal. The circuit may also include a counting unit that may be configured to generate an indication of a number of samples of the adjusted oscillating signal that are at the low and high level and to adjust the indication using a selectable duty cycle modify signal based on a desired duty cycle of the adjusting oscillating signal.
Fujitsu Limited


08/06/15
20150222237 

Amplifier with reduced idle power loss using single-ended loops


A method of audio signal processing includes receiving a first audio input signal (first input signal) at an input of a first integrating amplifier of a first single-ended (se) closed loop channel, and second input signal with a polarity reversed relative to the first input signal at an input of a second integrating amplifier configured of a second se closed loop channel. During audio signal processing a common-mode (cm) reference voltage level applied to a current source coupled to an input of the first and second integrating amplifiers is dynamically changed including whenever a level of the input signals is below a predetermined low level, reducing the cm reference voltage level for implementing low duty cycle (ldc) pwm operation, and whenever the level is above a level that corresponds to an onset of clipping, increasing the cm reference voltage level for at least reducing the clipping to lower crossover distortion..
Texas Instruments Incorporated


08/06/15
20150222186 

Adaptive critical-duty-cycle clamp for power converters


Devices and methods provide a duty cycle clamping device for preventing an output voltage of a power converter from decreasing as the duty cycle of a pulse width modulation (pwm) signal driving the power converter increases, the clamping device including duty cycle clamping circuitry configured to determine a critical duty cycle for the pwm signal based on an input voltage, a top voltage of a flying capacitor and a bottom voltage of the flying capacitor, and configured to clamp an actual duty cycle of the pwm signal at the critical duty cycle if a desired duty cycle exceeds the critical duty cycle.. .
Fairchild Semiconductor Corporation


08/06/15
20150221490 

Pulsed-field differential mobility analyzer separating particles and measuring shape parameters for non-spherical particles


A method for extracting shape information for particles with similar shape and corresponding system of a tandem differential mobility analyzer (dma) and pulse field differential mobility analyzer (pfdma) system, that executes at least generating a steady state aerosol concentration; passing aerosol flow from the aerosol concentration thru a bipolar charger to produce a known charge distribution; passing aerosol thru a dma with set sheath and aerosol flows and a set voltage to generate a mono-mobility aerosol; passing mono-mobility aerosol thru a pfdma system; and measuring mobility as a function of electric field by varying the duty cycle of the pulse in the pfdma system. Alternatively, the method and system relate to separating particles with different shapes by adjusting the duty cycle of the pulse to reach a higher or lower electric field than in the dma in which the mono-mobility aerosol was generated; and separating particles based on shape..
University Of Maryland


08/06/15
20150219586 

Rapid-read gated amperometry devices


A sensor system, device, and methods for determining the concentration of an analyte in a sample is described. Input signals including multiple duty cycles of sequential excitation pulses and relaxations are input to the sample.
Bayer Healthcare Llc


08/06/15
20150217032 

Systems and methods for controlling operation of a reduced pressure therapy system


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


07/30/15
20150216011 

Circuit for driving lighting devices


The inventive subject matter provides a circuit and a method for efficiently operating a lighting device, such as a light-emitting diode and a fluorescent lamp. In one aspect of the invention, the circuit includes an oscillator that generates a series of current pulses at a frequency that is at least 50,000 hz and that corresponds to a resonant frequency of the circuit including the lighting device.
Colorado Energy Research Technologies


07/30/15
20150214894 

Low voltage crystal oscillator (xtal) driver with feedback controlled duty cycling for ultra low power


A low voltage crystal oscillator (xtal) driver with feedback controlled duty cycling for ultra low power biases an amplifier for an xtal in the sub-threshold operating regime. A feedback control scheme can be used to bias the amplifier for an xtal biased in the sub-threshold operating regime.
University Of Virginia Patent Foundation


07/30/15
20150214846 

Bi-modal voltage converter


A bi-modal voltage converter and associated method for reducing stress on secondary rectifiers and decreasing switching losses. An embodiment of the voltage converter comprises three switches and control circuitry that is operative, upon a determination with respect to the input voltage, to select between a two-switch operation and a three-switch operation.
Texas Instruments Incorporated


07/30/15
20150214842 

Power management alarm devices


A system including an alarm device, the alarm device further includes a switch mode buck converter, a capacitor that is charged by the buck converter, a boost converter that powers an output device primarily from energy drawn from the capacitor and circuitry coupled to the buck converter and boost converter, wherein the buck converter charges the capacitor with a relatively constant current and wherein the circuitry dynamically adjusts an instantaneous duty cycle of the buck converter to achieve the constant current based upon a power setting of the output device.. .
Honeywell International Inc.


07/23/15
20150208491 

Accent lighting system


Apparatus for illuminating an object with light that is controlled for intensity and color temperature. A ceiling mounted luminaire contains a circuit that controls the intensity and color temperature of light emitting diodes (leds).
Method Lights, Llc


07/23/15
20150207463 

Power amplifier saturation detection


In a portable radio transceiver, a power amplifier system includes a saturation detector that detects power amplifier saturation in response to duty cycle of the amplifier transistor collector voltage waveform. The saturation detection output signal can be used by a power control circuit to back off or reduce the amplification level of the power amplifier to avoid power amplifier control loop saturation..
Skyworks Solutions, Inc.


07/23/15
20150207411 

Low input voltage boost converter with peak inductor current control and offset compensated zero detection


The low input voltage boost converter with peak inductor current control and offset compensated zero detection provide a boost converter scheme to harvest energy from sources with small output voltages. Some embodiments described herein includes a thermoelectric boost converter that combines an ipeak control scheme with offset compensation and duty cycled comparators to enable energy harvesting from teg inputs as low as 5 mv to 10 mv, and the peak inductor current is independent to first order of the input voltage and output voltage.
University Of Virginia Patent Foundation


07/23/15
20150206273 

Data interface method and apparatus using de-skew function


A low voltage differential signaling (lvds) transmitter may include an lvds transmission device configured to generate a transmission clock and serial data, which are synchronized to the transmission clock on respective clock and data channels. The transmission clock may have different signal patterns when the lvds transmission device is operating in normal and de-skew modes of operation.

07/16/15
20150201472 

Flyback boost circuit, led backlight driving circuit and liquid crystal device


A flyback boost circuit is disclosed. The flyback boost circuit includes a converter, a switch module, a driving module and an output diode.

07/16/15
20150200674 

Timing adjustment circuit, clock generation circuit, and timing adjustment


A timing adjustment circuit includes a detection unit to generate a detection signal in response to a first clock having a duty cycle of 50% and a first frequency, a second clock having a duty cycle of 50% and a second frequency that is half the first frequency, and a third clock having a duty cycle of 50%, the second frequency, and a phase displacement of 90 degrees relative to the second clock, the detection signal indicating timing relationship between the first clock and the second and third clocks, a low-pass filter to receive the detection signal, and a variable-delay circuit to adjust relative timing relationship between the first clock and the second clock in response to an output of the low-pass filter such that a center point of a pulse of the first clock is aligned with a center point of a pulse of the second clock.. .
Fujitsu Limited


07/16/15
20150200658 

Fully differential level conversion circuit


A fully differential level conversion circuit includes a positive signal branch, a negative signal branch and a coupling branch. The negative signal branch has identical structural features with the positive signal branch, which includes a drive terminal and a load terminal, an external fully differential signal is inputted to the drive terminals of the positive signal branch and the negative signal branch correspondingly.
Ipgoal Microelectronics (sichuan) Co., Ltd.


07/16/15
20150200656 

Duty cycle correction circuit and operation method thereof


A duty cycle correction circuit includes a clock adjustment unit configured to adjust a duty ratio of an input clock signal in response to a duty control signal and generate an output clock signal, a tracking type setting unit configured to generate an tracking type selection signal for setting a first or second tracking type based on a duty locking state of the output clock signal, and a control signal generation unit configured to generate the duty control signal, into which the first or second tracking type is incorporated, in response to the tracking type selection signal and the output clock signal.. .
Sk Hynix Inc.


07/16/15
20150200655 

Duty cycle correction circuit and operation method thereof


A duty cycle correction circuit includes a clock adjustment unit configured to adjust a duty ratio of an input clock signal in response to a duty control signal and generate an output clock signal, a tracking type setting unit configured to generate an tracking type selection signal for setting a first or second tracking type based on a duty locking state of the output clock signal, and a control signal generation unit configured to generate the duty control signal, into which the first or second tracking type is incorporated, in response to the tracking type selection signal and the output clock signal.. .
Sk Hynix Inc.


07/16/15
20150200598 

Control circuits and methods for regulating output voltages using multiple and/or adjustable reference voltages


Methods of regulating an output voltage of a switched mode power supply having a variable input voltage and a power switch include adjusting a reference voltage to adjust a duty cycle of a control signal for the power switch. The reference voltage may be adjusted as a function of the duty cycle, in response to the duty cycle of the control signal being outside a defined range and/or in the response to a temperature within the switched mode power supply being above a threshold temperature.
Astec International Limited


07/16/15
20150200597 

Control circuits and methods for regulating output voltages using multiple and/or adjustable reference voltages


Methods of regulating an output voltage of a switched mode power supply having a variable input voltage and a power switch include adjusting a reference voltage to adjust a duty cycle of a control signal for the power switch. The reference voltage may be adjusted as a function of the duty cycle, in response to the duty cycle of the control signal being outside a defined range and/or in the response to a temperature within the switched mode power supply being above a threshold temperature.
Astec International Limited


07/16/15
20150200596 

Control circuits and methods for regulating output voltages using multiple and/or adjustable reference voltages


Methods of regulating an output voltage of a switched mode power supply having a variable input voltage and a power switch include adjusting a reference voltage to adjust a duty cycle of a control signal for the power switch. The reference voltage may be adjusted as a function of the duty cycle, in response to the duty cycle of the control signal being outside a defined range and/or in the response to a temperature within the switched mode power supply being above a threshold temperature.
Astec International Limited


07/16/15
20150200595 

Control circuits and methods for regulating output voltages based on adjustable references voltages


Control circuits are provided for regulating an output voltage of a switched mode power supply having a variable input voltage and at least one power switch. The control circuits are operable to generate a comparison voltage based on the output voltage of the switched mode power supply and a duty cycle of a control signal provided to the at least one power switch, determine a reference voltage based on whether the generated comparison voltage falls within one of a plurality of voltage ranges, and adjust the duty cycle of the control signal provided to the at least one power switch of the switched mode power supply as a function of the determined reference voltage and the output voltage.
Astec International Limited


07/16/15
20150200591 

Switched mode power supplies


A switched mode power supply, smps. The smps comprises a switch, one or more inductors, an output smoothing capacitor, and a controller.
Toumaz Microsystems Limited


07/16/15
20150198718 

Method and receiving navigation satellite signals from two bands


Systems, apparatus and methods in a mobile device to multiplex two global navigation satellite system (gnss) signals on a single hardware receiver chain are presented. The gnss signals may come from a common gnss system on two bands of two different gnss systems overlapping on a common band.
Qualcomm Incorporated


07/16/15
20150196761 

Method for treating cardiovascular disease using implantable electroacupuncture device


An implantable electroacupuncture device (iead) treats cardiovascular disease through application of stimulation pulses applied at at least one of acupoints ex-hn1, bl14, ht7, ht5, pc6, st36, li11, lu7, and lu2. The iead comprises an implantable, coin-sized, self-contained, leadless electroacupuncture device having at least two electrodes attached to an outside surface of its housing.
Valencia Technologies Corporation


07/09/15
20150194920 

Motor controller maximizing energy savings


A motor controller and method for maximizing the energy savings in an ac induction motor at every load wherein the motor is calibrated at two or more load points to establish a control line, which is then programmed into a non-volatile memory (30) of the motor controller. A dsp-based closed-loop motor controller observes the motor parameters of the motor such as firing angle/duty cycles, voltage, current and phase angles to arrive at a minimum voltage necessary to operate the motor at any load along the control line.
The Powerwise Group, Inc.


07/09/15
20150194805 

Numerical control apparatus


To avoid overheating of a spindle motor as easy as possible, a numerical control apparatus measures a cycle time in machining a work (step s5), measures a current amount per unit cycle flowing to the spindle motor (steps s3 and step s4), calculates, on the basis of the measured current amount per unit cycle, a duty cycle time in which suppression of the occurrence of overheating of the spindle motor is guaranteed (step s6), determines on the basis of a comparison of the duty cycle time and the cycle time whether the spindle motor overheats (step s7), and, when the spindle motor overheats (yes at step s7), delays a start of the next cycle by a wait time setting value tw obtained by subtracting the cycle time from the duty cycle time (step s8, no at step s10, and step s11).. .
Mitsubishi Electric Corporation


07/09/15
20150192120 

Peristaltic pump with linear flow control


A peristaltic pump includes a conduit having a first end for receiving a fluid from a reservoir and a second end for delivering the fluid. A plurality of fingers are disposed at respective locations along a segment of the conduit and are configured to alternately compress and release the conduit at the locations.
Q-core Medical Ltd.


07/02/15
20150189706 

Led power supply with small dimming ratio control and control method thereof


A led driving control circuit for controlling a power switch in a led power supply includes: a feedback circuit coupled to a led load and generating a feedback signal indicative of an output voltage of the led power supply; an enabling circuit generating an enable signal according to the feedback signal, a first reference signal and a pwm dimming signal, wherein when the feedback signal is higher than the first reference signal, the enable signal synchronizes with the pwm dimming signal, and when the feedback signal is lower than the first reference signal, the duty cycle of the enable signal is higher than the duty cycle of the pwm dimming signal; and a feedback loop control circuit generating a control signal for controlling the power switch according to the feedback signal only when the enable signal is in an active state.. .
Chengdu Monolithic Power Systems Co., Ltd.


07/02/15
20150188463 

Controller for brushless dc motor with low torque ripple and method therefor


A controller for a bldc motor includes a pulse width modulator and a control circuit. The pulse width modulator provides at least one phase control signal for a corresponding phase of the bldc motor with a pulse width determined by a duty cycle signal.
Silicon Laboratories Inc.


07/02/15
20150188453 

Method and device for actuating an inverter


The invention relates to a method for actuating an inverter (10) by means of space vector pulse width modulation, in particular for actuating an electrical machine (14), wherein the inverter (10) has a plurality of controllable switches (s) and is configured to provide a multi-phase electrical voltage (u, v, w) in the form of a voltage space vector (v*), wherein the controllable switches (s) are actuated in such a manner that different duty cycles of the switches (s) are set and a plurality of successive different switching states (v0-v7) of the switches (s) are set up to provide the voltage space vector (v*), wherein the duty cycles of the switches (s) are extended during a pulse width modulation period (t) if a duty cycle of one of the switches (s) falls below a predefined threshold (44) during the pulse width modulation period (t).. .
Robert Bosch Gmbh


07/02/15
20150188425 

Buck converter and control method therefor


The present disclosure provides a pair of nmosfet switches connected in series, an output filter, a control circuit, a boot-strap capacitor and a disabling circuit. A high-side mosfet switch is coupled to an input voltage.
Anpec Electronics Corporation


07/02/15
20150188362 

Transformerless multi-level medium-voltage uninterruptable power supply (ups) system


Systems and methods for supplying power at a medium voltage from an uninterruptible power supply (ups) to a load without using a transformer are disclosed. The ups includes an energy storage device, a single stage dc-dc converter or a two-stage dc-dc converter, and a multi-level inverter, each of which are electrically coupled to a common negative bus.
Inertech Ip Llc


07/02/15
20150185095 

Methods of torque estimation and compensation and systems thereof


At least one example embodiment discloses a method including measuring phase currents associated with one or more stator windings of the machine, estimating terminal voltage values based on the measured phase currents representations of the machine and based on at least one of a duty cycle and a dead time ratio of the machine, transforming the terminal voltage values to derive direct and quadrature voltage representations consistent with the measured phase currents, determining a terminal power of one or more terminals of the machine, the terminal power directly based on one of the estimated terminal voltage values and direct and quadrature voltage representations of the machine and current command values and determining an estimated shaft torque of the machine based on the terminal power in accordance with at least one efficiency value based on machine parameters from a characterization of the machine.. .
Deere & Company


06/25/15
20150180458 

Method and system for controlling a charge pump


Embodiments of a method for controlling a charge pump and a control device for a charge pump are described. In one embodiment, a method for controlling a charge pump involves monitoring a power-on status of the charge pump, calculating a duty cycle of the charge pump within a time period based on the power-on status of the charge pump, and adjusting at least one of a clock frequency setting and a capacitance setting of the charge pump in based on the duty cycle of the charge pump.
Nxp B.v.


06/25/15
20150180328 

System and method providing over current protection based on duty cycle information for power converter


System and method for protecting a power converter. An example system controller for protecting a power converter includes a signal generator, a comparator, and a modulation and drive component.
On-bright Electronics (shanghai) Co., Ltd.


06/25/15
20150179446 

Methods for forming crystalline igzo through processing condition optimization


Embodiments described herein provide method for forming crystalline indium-gallium-zinc oxide (igzo). A substrate is provided.
Intermolecular, Inc.


06/25/15
20150177326 

Waveform calibration using built in self test mechanism


A system on a chip (soc) includes a transceiver comprising a transmitter having a power amplifier and a receiver having a signal buffer. At least one of the transmitter and receiver has a configurable portion that can be configured to produce a range of waveforms (both in waveshape as well as duty cycle).
Texas Instruments Incorporated


06/25/15
20150176709 

Method of controlling parking control device of transmission


A method of controlling a parking control device of a transmission may include a) inputting data about a state of a vehicle, b) determining, based on the data input at a step of the a), whether a current situation is a first situation in which an actuator of the parking control device of the transmission is to be promptly controlled, a second situation in which noise is controlled to be minimized, or a third situation which is a normal situation, and c) controlling a pulse width modulation (pwm) duty cycle required to control the actuator to different values depending on the first, second, and situations determined at a step of the b), thus driving the actuator.. .
Kia Motors Corp.


06/25/15
20150174411 

Methods and systems for employing a duty cycle in electrical stimulation of patient tissue


A method of delivering electrical stimulation energy includes receiving stimulation parameters such as a selection of one or more electrodes, a stimulation amplitude, and a stimulation frequency. The stimulation parameters define, at least in part, an electrical stimulation energy deliverable as a series of electrical pulses at the stimulation frequency.
Boston Scientific Neuromodulation Corporation


06/25/15
20150174403 

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.

06/25/15
20150173687 

Methods and systems for power optimization in a medical device


A physiological monitoring system may use photonic signals to determine physiological parameters. The system may vary parameters of a light drive signal used to generate the photonic signal from a light source such that power consumption is reduced or optimized.
Covidien Lp


06/18/15
20150171843 

High-resolution pulse width modulation signal generation circuit and method


A pulse width modulation (pwm) signal generation circuit and method are disclosed herein. The pwm signal generation circuit includes an integer part pulse generation circuit, and a fractional part pulse generation circuit.
Abov Semiconductor Co., Ltd.


06/18/15
20150171836 

Duty cycle correction circuit


A duty cycle correction circuit may include an error booster suitable for amplifying an input clock duty error, a driver suitable for driving an output clock based on the input clock, and a duty corrector suitable for correcting the output clock duty based on the duty error amplified by the error booster.. .
Sk Hynix Inc.


06/18/15
20150171835 

Integrated circuit failure prediction using clock duty cycle recording and analysis


A system is disclosed, which may include a clock distribution circuit. The clock distribution circuit may include a duty cycle controller to distribute a clock output signal to a plurality of remote locations on a clock grid.
International Business Machines Corporation


06/18/15
20150171834 

Duty cycle adjustment with error resiliency


The present disclosure regards adjusting a duty cycle, which includes generating a duty cycle signal having a voltage representing a duty cycle of a clock signal; adjusting a reference voltage generated by an adjustable reference voltage generator to match the duty cycle signal to produce a first matched value; inverting voltage sources of the reference voltage generator; adjusting, while the voltage sources are inverted, the reference voltage to produce a second matched value; and calculating a duty cycle value based on the first and second matched values.. .
International Business Machines Corporation


06/18/15
20150171730 

Buck-boost converter and regulation


A buck-boost converter includes a buck-boost voltage converter circuit, an error controller and a buck-boost mode controller. The buck-boost voltage converter includes switches.
General Electric Company


06/18/15
20150169036 

Rescheduling workloads to enforce and maintain a duty cycle


In an embodiment, a processor includes a plurality of cores to independently execute instructions, at least one graphics engine to independently execute graphics instructions, and a power controller including an alignment logic to cause at least one workload to be executed on a first core to be rescheduled to a different time to enable the plurality of cores to be active during an active time window and to be in a low power state during an idle time window. Other embodiments are described and claimed..

06/18/15
20150167625 

Plasma generation apparatus


The present invention addresses the issue of improving generation efficiency of plasma in relation to usage power in a plasma generation apparatus. The present invention is directed to a plasma generation apparatus provided with an electromagnetic wave emission antenna and a discharge electrode.
Imagineering, Inc.


06/11/15
20150163825 

Carrier sense adaptive transmission (csat) communication scheme detection and mitigation in unlicensed spectrum


Systems and methods for carrier sense adaptive transmission (csat) communication scheme identification and mitigation in unlicensed spectrum are disclosed. The identification may comprise, for example, identifying csat communication based on a presence of a first signal and an absence of a second signal of a radio access technology (rat) during a period of time.
Qualcomm Incorporated


06/11/15
20150162902 

Method and balancing currents


A method and apparatus are provided for balancing currents of two or more parallel-connected power semiconductor switches during an on-state of the switches. A control terminal of each switch is driven by a driver unit.
Abb Oy


06/11/15
20150162834 

Dual-mode voltage doubling buck converter with smooth mode transition


Devices and methods provide a voltage regulating device including voltage supply circuitry configured to receive a first voltage, generate at least a second voltage based on the first voltage, and output an output voltage, the output voltage being one of the first voltage and the second voltage based on a voltage selection signal; regulator circuitry configured to switch between the output voltage and a reference potential based on a control signal; and control circuitry configured to generate the control signal, the control signal having a first duty cycle if the output voltage is the first voltage and a second duty cycle if the output voltage is the second voltage, the control circuitry configured to adjust the second duty cycle based on, at least in part, a droop voltage in the regulator circuitry.. .
Fairchild Semiconductor Corporation


06/11/15
20150161950 

Backlight driving circuit, liquid crystal display device and drive method


The present invention provides a backlight drive circuit, and a liquid crystal display and a drive method for the same, wherein the backlight drive circuit includes: an error amplification unit configured to receive a feedback voltage from the backlight, and used for comparing the feedback voltage with a basis voltage, adjusting the amplification coefficient and the amplification speed for a comparison result based on the magnitude of the comparison result, and outputting an amplification result as a control signal; and a drive control unit configured to receive the control signal from the error amplification unit, and used for outputting, according to the control signal, a pulse width modulation dimming signal with a corresponding duty cycle to modulate a voltage signal output to the backlight from a power supply. The backlight drive circuit may be applied to driving operation for various display devises and capable of automatically adjusting response rate under different loading modes.
Shenzhen China Star Optoelectronics Technology Co., Ltd.


06/11/15
20150159576 

Adaptive learning of duty cycle for a high pressure fuel pump


Methods and systems are provided for closed loop operation of a high pressure fuel pump connected to the direct injectors of an internal combustion engine. During operation of the high pressure pump a dead zone may exist where a substantial change in the pump duty cycle does not correspond to a substantial change in the fuel rail pressure.
Ford Global Technologies, Llc




Popular terms: [SEARCH]

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

Follow us on Twitter
twitter icon@FreshPatents

###

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.


0.3757

4701

1 - 1 - 101