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Duty Cycle patents

      

This page is updated frequently with new Duty Cycle-related patent applications.




 Driving a multi-color luminaire patent thumbnailDriving a multi-color luminaire
Embodiments are disclosed for driving a multi-color solid state light source luminaire so as to maintain a color point as temperature varies within a given range. An array of solid state light sources includes two or more strings and is driven by a single constant current source.
Osram Sylvania Inc.


 Duty cycle-based power control scheme for satellite communication patent thumbnailDuty cycle-based power control scheme for satellite communication
Various aspects of the disclosure relate to controlling the transmit power of a satellite by controlling a duty cycle associated with satellite transmission. In some implementations, a satellite network portal (snp) may send waveforms to a satellite that relays the waveforms to user terminals (uts).
Qualcomm Incorporated


 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. A sampled loop filter (slpf) in the phase locked loop may capture charge from a charge pump (chp) in the phase locked loop and the charge is captured at a frequency corresponding to the frequency of the reference clock signal.
Maxlinear, Inc.


 High-speed programmable clock divider patent thumbnailHigh-speed programmable clock divider
Systems and methods for dividing input clock signals by programmable divide ratios can produce output clock signals with the delay from the input clock signal to the output clock signal independent of the value of the divide ratio and with the duty cycle of the output clock signal being 50% independent of the value of the divide ratio. An example programmable clock divider includes a modulo n counter that produces a count signal that counts modulo the divide ratio and a half-rate clock signal generator that produces a common half-rate clock signal, an even half-rate clock signal, and an odd half-rate clock signal that toggle at one-half the rate of the output clock signal.
Qualcomm Incorporated


 Reducing a drop in a residual supply-signal level on start up or restart of a power supply patent thumbnailReducing a drop in a residual supply-signal level on start up or restart of a power supply
In an embodiment, a method includes generating a pulse-width-modulated signal having a duty cycle, and isolating a power-supply output node in response to the duty cycle corresponding to a signal magnitude that is less than a magnitude of an output signal on the power-supply output node. For example, where a power supply has a non-zero residual output signal (e.g., output voltage) on its output node after the power supply is deactivated, a power-supply controller can use such a technique to reduce or eliminate a drop in the residual output signal caused by, or that would be caused by, a restarting of the power supply..
Intersil Americas Llc


 Reducing a drop in a residual supply signal level on start up or restart of a power supply patent thumbnailReducing a drop in a residual supply signal level on start up or restart of a power supply
In an embodiment, a power-supply controller includes a control circuit, a drive circuit, and a signal-drop-reducing circuit. The control circuit is configured to generate a drive signal having a duty cycle, and the drive circuit is configured to cause a phase circuit of a power supply to generate, in response to the drive signal, an output signal having a magnitude.
Intersil Americas Llc


 Electronic device and  wireless power transfer therefor patent thumbnailElectronic device and wireless power transfer therefor
An electronic device and method of wireless power transfer therefor are provided. The electronic device may include a frequency change circuit to produce a first signal of a frequency corresponding to at least one wireless power transfer scheme, a duty cycle change circuit to produce a second signal of a duty cycle corresponding to the at least one wireless power transfer scheme, and a control unit to control at least one of the frequency change circuit and the duty cycle change circuit according to the at least one wireless power transfer scheme.
Samsung Electronics Co., Ltd.


 Wireless power transmitters with wide input voltage range and methods of their operation patent thumbnailWireless power transmitters with wide input voltage range and methods of their operation
The embodiments described herein provide a power transmitter for wireless charging of an electronic device and methods of its operation. The power transmitter uses an inverter configured to generate a square wave from a potentially wide ranging dc input voltage.
Freescale Semiconductor, Inc.


 Integrated voltage regulator with in-built process, temperature and aging compensation patent thumbnailIntegrated voltage regulator with in-built process, temperature and aging compensation
A method for regulating voltage for a processor is disclosed. The method comprises requesting a target frequency value, wherein the target frequency value determines a target clock frequency for clocking the processor.
Nvidia Corporation


 Circuit and  controlling pulse width modulation of a current suply for a load patent thumbnailCircuit and controlling pulse width modulation of a current suply for a load
A circuit comprising a controller (2) for controlling a pulse width modulated input signal, and a driver (4) configured to supply current to a load (6) based on the input signal, wherein over the on time of each pulse width modulation period the driver (4) supplies current to the load (6) with a second frequency that is greater than the first frequency. The controller (2) is configured to control the duty cycle to set the output of the load (6) to a desired output level, and to dither the duty cycle about a point corresponding to the desired output level..
Philips Lighting Holding B.v.


A wireless charging device and methods of use

The invention is directed to a wireless charging device having a pulse width modulation (pwm) unit integrated within a transmitting unit of said wireless charging device and configured to modulate rf energy transmission to a device under charge according to real time analysis of the charging process, said pwm unit is connected to a charging tracking module and to controller, wherein said charging tracking module is adapted to provide data reflecting the progress of said charging process and said controller is adapted to receive said data from said charging tracking module and adjust the duty cycle of said pwm unit according to the data obtained, so as to adjust the transmitted power to the wireless charging process and thus, to have minimal energy loss during said wireless charging process. The invention is further directed to a wireless charging system comprising a wireless charging device according to the above and a device under charge, wherein during the wireless charging process the transmission of rf energy by the transmitting unit is enabled according to the duty cycle of the pwm that changes according to the progress of the charging process, so as to provide a desired average power level to a receiving unit in the device under charge while keeping a peak power level transmitted for maintaining a high power conversion efficiency..
Humavox Ltd.

Laser apparatus, euv light generation system, and controlling laser apparatus

A laser apparatus may include: an optical amplifier configured to amplify a laser beam outputted from a master oscillator; an optical-amplifier power supply configured to supply an alternating current for optical amplification to the optical amplifier; and a laser controller. The optical-amplifier power supply may include: an alternating current generation circuit including an inverter circuit configured to change output amplitude in accordance with a duty cycle, the alternating current generation circuit being configured to generate the alternating current from an output of the inverter circuit; and a power supply control circuit configured to hold control information defining correspondence relations between command values from the laser controller and duty cycles of the inverter circuit, determine a duty cycle corresponding to a command value received from the laser controller based on the control information, and provide the determined duty cycle to the inverter circuit..
Gigaphoton Inc.

Hybrid acquisition method incorporating multiple dissociation techniques

A method is disclosed wherein parent or precursor ions are fragmented or reacted according to a first fragmentation or reaction mode, and when an ion of interest is detected the method then temporarily switches to a second mode of fragmentation or reaction. This enables a full un-biased ms/ms data set to be provided over a wide mass to charge ratio range with high-duty cycle, together with complementary detailed fragment data of interest, in a single experimental run or acquisition..
Micromass Uk Limited

Microfluidic devices with integrated resistive heater electrodes including controlling and measuring the temperatures of such heater electrodes

The invention relates to methods and devices for control of an integrated thin-film device with a plurality of microfluidic channels. In one embodiment, a microfluidic device is provided that includes a microfluidic chip having a plurality of microfluidic channels and a plurality of multiplexed heater electrodes, wherein the heater electrodes are part of a multiplex circuit including a common lead connecting the heater electrodes to a power supply, each of the heater electrodes being associated with one of the microfluidic channels.
Canon U.s. Life Sciences, Inc.

Induction rechargeable electronic candle system

A large plurality of artificial, battery-operated, electronic candles are arranged to be simultaneously recharged upon placement on a series of interconnected charging trays that include a transformer primary winding at defined locations thereon. The primary windings are driven by an ac signal whose duty cycle is controlled by a pulse width modulator 1c to induce a voltage across secondary windings contained within the candle housing.
Shenzhen Liown Electronics Company Ltd.

Electric vehicle supply equipment with temperature controlled current

In electric vehicle supply equipment (evse), interruption of charging due to overheating is prevented by adjusting the pulse duty cycle on the control pilot conductor communicating the maximum allowed current level to the electric vehicle, the adjustment being performed whenever the evse temperature exceeds a predetermined threshold temperature below the maximum operating temperature as a function of the approach of the temperature to the maximum operating temperature.. .
Aerovironment, Inc.

Method and system for adjusting source impedance and maximizing output by rf generator

An electrosurgical system includes an electrosurgical probe connected to a control console, wherein the probe is capable of coagulating and ablating tissue depending on a selected operating mode. Before operating the system, probe-specific data stored in a memory device associated with the probe is read by a processing device in the console.

Light output control device, illumination system, and facility apparatus

A light output control device includes a switching device, multiple signal input ports, a signal selection circuit, and a control circuit. The switching device is to be electrically connected between a direct-current power supply and a light source circuit.
Panasonic Intellectual Property Management Co., Ltd.

Digital current sensing in power controller

Some embodiments include apparatus and methods having a node to provide a signal, and a control unit arranged to control a value of an output voltage at an output node on an output path based on a duty cycle of the signal and a value of an input voltage. The control unit can also be arranged to cause a change in a resistance on the output path in order to determine a value of a current on the output path based at least on the change in the resistance..
Intel Corporation

Controller self-commissioning for three-phase active power electronics converters

A system for modulating a current level of a power grid includes a perturbation module that injects a sinusoidal signal, at a cross-over frequency, to modulate a duty cycle to a power converter connected to the power grid; a current controller that monitors a reference current and a current at grid-side terminal of the power converter, the current controller further monitors a current of the power grid; and a parameter calculation module that calculates a plurality of gain values for the current controller based at least in part on a phase margin, a cross-over frequency, a current of an alternating current side of the power converter, and the duty cycle.. .
Otis Elevator Company

Shift register and driving method thereof, gate driving device, display panel

The present invention provides a shift register and a driving method thereof, a gate driving device and a display panel, such that the shift register can pull down the output terminal by means of dc voltage signals, which reduces the duty cycle of the clock signal and thereby lowers the power consumption of thin film transistors. The shift register comprises a plurality of cascaded shift register elements, each of which comprises: an input module in response to the input signal outputted by an input signal terminal, an output module in response to a voltage signal outputted a the pull-up node, a reset module in response to the reset signal outputted by a reset signal terminal, a first pull-down module in response to the input signal and the reset signal, and a second pull-down module in response to a voltage signal of a pull-down node..
Beijing Boe Optoelectronics Technology Co., Ltd.

Light source driving apparatus and image display apparatus

A light source emits a laser light. A driver drives the light source based on a driving signal constituted by a pulse that changes a driving current value.
Jvc Kenwood Corporation

On-chip optical filter comprising fabri-perot resonator structure and spectrometer

An on-chip optical filter having fabri-perot resonators and a spectrometer may include a first sub-wavelength grating (swg) reflecting layer and a second swg reflecting layer facing each other. A plurality of fabri-perot resonators are formed by the first swg reflecting layer and the second swg reflecting layer facing each other.
California Institute Of Technology

Flow control system for an agricultural metering system

A flow control system for an agricultural metering system includes a control system configured to be communicatively coupled to at least one clutch. The control system is configured to output a respective pulse-width modulation (pwm) signal to the at least one clutch, the pwm signal is configured to induce the at least one clutch to alternately engage to establish a rotatable connection between a respective drive input and a respective rotatable metering device and to disengage to interrupt the rotatable connection between the respective drive input and the respective rotatable metering device, and the control system is configured to adjust a duty cycle of the respective pwm signal to control a rotation rate of the respective rotatable metering device..
Cnh Industrial Canada, Ltd.

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.
Philips Lighting Holding B.v.

Driver circuit with extended operation range

A system comprising a driver circuit wherein the driver circuit comprises a converter. The system further comprises a controller operable to control a ratio between an input voltage supplied to the driver circuit and a target output voltage to be output from the driver circuit by varying a pulse width modulated signal, and by switching between operating modes of said converter.
Philips Lighting Holding B.v.

Wireless sensor network

One or more techniques and/or systems are provided for automatically forming a wireless sensor network, implementing power management for the wireless sensor network, and/or self-healing within the wireless sensor network. For example, hub devices, configured to forward messages through the wireless sensor network to a gateway device having access to a network, may automatically join and configure into the wireless sensor network by locating and connecting to master devices using signal frequencies representing numbers of hops to the gateway device.
Gojo Industries, Inc.

Reduced crosstalk class d audio amplifier matching output power based on channel gain

A multi-channel class d audio amplifier is provided to substantially reduce channel-to-channel crosstalk by employing in each channel a local triangle ramp generator controlled by a single global digital timing signal. The noise critical timing/integrating capacitor for the triangle ramp generator resides locally in each channel and adjacent to the pwm comparator of that channel and referenced to the local ground of that channel.
Crestron Electronics, Inc.

Reduced crosstalk and matched output power audio amplifier using a triangle wave generator

A multi-channel class d audio amplifier is provided to substantially reduce channel-to-channel crosstalk by employing in each channel a local triangle ramp generator controlled by a single global digital timing signal. The noise critical timing/integrating capacitor for the triangle ramp generator resides locally in each channel and adjacent to the pwm comparator of that channel and referenced to the local ground of that channel.
Crestron Electronics, Inc.

Method for delivering a duty cycle limited signal to a speaker using a class d amplifier

A multi-channel class d audio amplifier is provided to substantially reduce channel-to-channel crosstalk by employing in each channel a local triangle ramp generator controlled by a single global digital timing signal. The noise critical timing/integrating capacitor for the triangle ramp generator resides locally in each channel and adjacent to the pwm comparator of that channel and referenced to the local ground of that channel.
Crestron Electronics, Inc.

Reduced crosstalk and matched output power class d audio amplifier with oppositely polarized triangle waves

A multi-channel class d audio amplifier is provided to substantially reduce channel-to-channel crosstalk by employing in each channel a local triangle ramp generator controlled by a single global digital timing signal. The noise critical timing/integrating capacitor for the triangle ramp generator resides locally in each channel and adjacent to the pwm comparator of that channel and referenced to the local ground of that channel.
Crestron Electronics, Inc.

Heating pad

An improved heating pad which minimizes or eliminates skin burns due to improper uses in one or more of several ways: by monitoring a total electric power input or output of the heating pad; by monitoring an absolute temperature of each surface of the heating pad; by monitoring a temperature difference between each surface of the heating pad, where a small temperature difference indicates that both sides of the heating pad are covered; and/or by monitoring the duty cycle of a heating element, where a large off portion of the duty cycle indicates both sides of the heating pad are covered.. .
Triodyne Safety Systems, L.l.c.

Method and signaling in dense network operations

A method, an apparatus, and a computer program product for wireless communication are provided. The apparatus identifies first entity and transmits a very low duty cycle signal (ldcs) configuration of the first entity.
Qualcomm Incorporated

Power conversion apparatus

A power conversion apparatus including a transformer, a synchronous rectification (sr) transistor and an sr control circuit is provided. A first terminal of a primary side of the transformer receives an input voltage, and a first terminal of a secondary side outputs a dc voltage.
Excelliance Mos Corporation

Flyback converter output current evaluation circuit and evaluation method

An output current calculating circuit for a flyback converter operating under ccm and dcm is disclosed. The off current value ioff and the blanking current value ileb flowing through a sensing resistor are calculated using a detection module and are summed together using a current summing unit.
Alpha And Omega Semiconductor (cayman) Ltd.

Photoplethysmography sensor apparatus and method

The present invention relates to a photoplethysmography sensor apparatus (200, 300), a photoplethysmography sensor method (400), and a photoplethysmography sensor computer program product. It is proposed to measure a photoplethysmographic signal without ambient light interference.
Koninklijke Philips N.v.

Vacuum cleaner

A vacuum cleaner may include a cleaner body having a suction motor and a suctioning portion configured to be in communication with the cleaner body and to suction air and dust. One of a battery assembly having a battery or a cord reel assembly having a power cord may be installed in the cleaner body.
Lg Electronics Inc.

Electronic vaporiser system

An electronic cigarette vaporiser that includes a heating element, a power source and an electronics module that manages the delivery of power, current or voltage to the heating element; the electronics module controls or delivers pulses of power, current or voltage to the heating element, such as pwm (pulse width modulation) with a high frequency 1-10 khz switching frequency. The duty cycle of the pwm can be approximately 90% when heating; and 1-10% duty during a preheat; and 0% when the vaporiser is idle..
Beyond Twenty Ltd.

Techniques for using traffic monitoring for co-existence with unlicensed networks

Systems and techniques are disclosed to manage coexistence of wireless technologies, including 5g unlicensed transmissions, with 802.11 transmissions in the unlicensed band. Aspects of the present disclosure include channel selection and 802.11 traffic monitoring and coordinated access.
Qualcomm Incorporated

Method and use of simultaneous multiple channels in the dynamic frequency selection band in wireless networks

The present invention relates to wireless networks and more specifically to systems and methods for selecting available channels free of radar signals from a plurality of 5 ghz radio frequency channels. In one embodiment, the present invention provides a standalone multi-channel dfs master that includes a switch and embedded processor that are programmed to switch a 5 ghz radio transceiver to a first channel of the plurality of 5 ghz radio channels, cause a beacon generator to generate a beacon in the first channel of the plurality of 5 ghz radio channels, cause a radar detector to scan for the radar signal in the first channel of the plurality of 5 ghz radio channel, and then repeat these steps for each of the other channels of the plurality of 5 ghz radio channels during a single beacon transmission duty cycle..
Network Performance Research Group Llc

Power efficient control and operation of a data-sensing peripheral device based on location and mode of transport

A peripheral device capable of being worn, carried by a user, or used in an in-vehicle computer system operates in conjunction with an application to acquire, store, and present data relevant to a user's health, physical activity, environment, air quality, or other parameters of interest. For power efficient operation and enhanced performance, control parameters of the peripheral device such as duty cycle, sampling rate, and sleep state may be wirelessly and automatically controlled by the mobile device.
Drayson Technologies (europe) Limited

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 clock generator circuit configured to provide first and second clock signals responsive to an input dock signal.
Micron Technology, Inc.

Shift register unit and driving method thereof, as well as array substrate gate drive device and display panel

The present disclosure provides a shift register unit and a driving method thereof, as well as an array substrate gate driving device and a display panel, to decrease a duty cycle of a thin-film transistor connected to the pull-down node in order to prevent the thin-film transistor from aging and increase the lifetime of the thin-film transistor. The shift register unit includes an input module, an output module, a reset module, a function module, a first pull-down module and a second pull-down module; wherein the first pull-down module is configured to provide a low level of the second square wave signal to the pull-up node and the output lead in response to a high level of the first square wave signal and a high level signal at the first pull-down node; the second pull-down module is configured to provide a low level of the first square wave signal to the pull-up node and the output lead in response to a high level of the second square wave signal and the high level signal at the second pull-down node..
Beijing Boe Display Technology Co., Ltd.

Shift register unit, gate driving device and display device

The present disclosure provides a shift register unit including a pull-up module, an input module, a reset module, a first pull-down module, a second pull-down module, a first control module, a second control module, a first state clearing module, and a second state clearing module. The shift register unit utilizes a first clock signal and a second clock signal to cause the first and second pull-down modules to pull down alternately, in order to maintain the stability of the output signal.
Beijing Boe Display Technology Co., Ltd.

Implanted pulse generators with reduced power consumption via signal strength/duration characteristics, and associated systems and methods

Implanted pulse generators with reduced power consumption via signal strength-duration characteristics, and associated systems and methods are disclosed. A representative method for treating a patient in accordance with the disclosed technology includes receiving an input corresponding to an available voltage for an implanted medical device and identifying a signal delivery parameter value of an electrical signal based on a correlation between values of the signal delivery parameter and signal deliver amplitudes.
Nevro Corporation

System for neuroprotective therapy for glaucoma

Providing neuroprotective therapy for glaucoma includes generating a micropulsed laser light beam having parameters and characteristics, including pulse length, power, and duty cycle, selected to create a therapeutic effect with no visible laser lesions or tissue damage to the retina. The laser light beam is applied to retinal and/or foveal tissue of an eye having glaucoma or a risk of glaucoma to create a therapeutic effect to the retinal and/or foveal tissue exposed to the laser light beam without destroying or permanently damaging the retinal and/or foveal tissue and improve function or condition of an optic nerve and/or retinal ganglion cells of the eye..
Ojai Retinal Technology, Llc

Warm dimming for an led light source

A lighting device includes a first led light source having a first color temperature, a second led light source having a second, lower color temperature connected in parallel with the first led light source, and control circuitry operable to apply variable duty cycle frequency modulated power to the first led light source while continuous power is provided to the second led light source. A method of operating a lighting device includes providing variable duty cycle frequency modulated power to a first led light source having a first color temperature, and providing continuous power to a second led light source having a second, lower color temperature connected in parallel with the first led light source..
Ge Lighting Solutions, Llc

Offset insensitive quadrature clock error correction and duty cycle calibration for high-speed clocking

Techniques for correcting clock distortion. The techniques include use of circuitry for detecting and correcting duty cycle distortion and quadrature clock phase distortion.
Xilinx, Inc.

Dynamic error vector magnitude duty cycle correction

Aspects of this disclosure relate to dynamic error vector magnitude (devm) compensation. In one embodiment, an apparatus includes an amplifier, a low pass filter, and a bias circuit.
Skyworks Solutions, Inc.

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



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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