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Duty Cycle patents



      

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




Date/App# patent app List of recent Duty Cycle-related patents
06/16/16
20160174340 
 Digital communication receiver interface circuit for line-pair with duty cycle imbalance compensation patent thumbnailDigital communication receiver interface circuit for line-pair with duty cycle imbalance compensation
A circuit (200) includes: a diode bridge (210) having polarity-independent input terminals for coupling to a dali bus, and having positive and negative output terminals, wherein the diode bridge receives a receive signal from the dali bus; a galvanic isolation device (220) having an input for receiving the receive signal from the diode bridge, and an output for outputting the receive signal galvanically isolated from the diode bridge and the dali bus; a receive signal threshold reference device (235) for setting a threshold voltage for the galvanic isolation device to respond to the receive signal; an amplifier (280) for receiving the galvanically isolated receive signal from the galvanic isolation device and outputting a binary digital signal via a low pass filter (290); and a first duty cycle control device (230, 270) for adjusting the timing of rising edges of the galvanically isolated receive signal with respect to its falling edges.. .
Koninklijke Philips N.v.


06/16/16
20160174319 
 Systems and methods for dimming of a light source patent thumbnailSystems and methods for dimming of a light source
In embodiments, improved capabilities are described for dimming performance of lighting methods and systems, such as the improvement of dimming led lamps that are dimmed from standard external dimming devices. Methods and systems for improving dimming performance include a fast startup override facility for overriding a default dimming function of the lamp's electronics through forcing the lamp electronics to operate with a higher than normal duty cycle to ensure the lamp electronics can deliver higher than normal power to an led module during a dimming current level startup condition.
Ecosense Lighting Inc.


06/16/16
20160174159 
 Terminal requested base station controlled terminal transmission throttling patent thumbnailTerminal requested base station controlled terminal transmission throttling
A method for terminal requested base station controlled terminal transmission throttling includes transmitting a throttling request signal to the base station, the throttling request signal including data indicating to the base station to issue a discontinuous uplink transmission grant to the terminal, wherein the throttling request signal includes data representing a maximum duty cycle of forthcoming discontinuous uplink transmissions from the terminal to the base station, receiving from the base station the discontinuous uplink transmission grant, and transmitting discontinuous uplink transmissions from the terminal to the base station that do not exceed the maximum duty cycle, wherein the maximum duty cycle corresponds to discontinuous uplink transmission bursts of less than a time t corresponding to continuous uplink transmissions.. .
Sony Mobile Communications Ab


06/16/16
20160173067 
 System and  enhanced clocking operation patent thumbnailSystem and enhanced clocking operation
A circuit, integrated circuit, system tor implementation in an integrated circuit, and method of operating such a circuit, integrated circuit, or system are disclosed herein. In one example embodiment, the such a circuit includes a multiplier circuit portion, a first duty cycle correction (dcc) circuit portion, and a clock gating circuit portion.
Freescale Semiconductor, Inc.


06/16/16
20160173029 
 Noninvasive monitoring of a photovoltaic system patent thumbnailNoninvasive monitoring of a photovoltaic system
A method for determining a photovoltaic (pv) current from each of a plurality of pv elements arranged in a differential network is provided. The differential network is controlled with a plurality of control signals, where the differential network includes a plurality of inductors, and each control signal has a duty cycle.
Texas Instruments Incorporated


06/16/16
20160172895 
 Wireless power transfer method, apparatus and system for low and medium power patent thumbnailWireless power transfer method, apparatus and system for low and medium power
A wireless power transfer method for a wireless power transfer apparatus using full and half-bridge inverter topologies includes detecting whether or not a wireless power receiver is present within a range of power being transferrable in a wireless manner, transmitting a detection signal to the wireless power receiver, receiving at least one of identification information and setting information from the wireless power receiver, receiving a control error packet from the wireless power receiver, and controlling an amount of power to be transferred by using the combination of a driving frequency, a duty cycle or a power signal phase to the full or half-bridge inverter.. .
Lg Electronics Inc.


06/16/16
20160169124 
 Controller for internal combustion engine patent thumbnailController for internal combustion engine
A controller for controlling an internal combustion engine includes a valve timing adjuster, a variable valve lift mechanism and a processor. The processor controls a duty cycle of a drive signal in a selected one of control modes, thereby changing a relative rotational phase of a camshaft relative to an engine output shaft.
Toyota Jidosha Kabushiki Kaisha


06/09/16
20160165536 
 Reduction of power consumption in a half-duplex transceiver patent thumbnailReduction of power consumption in a half-duplex transceiver
Circuits and methods for reducing power consumption in a half-duplex transceiver are disclosed. In an embodiment, a power management circuit of half-duplex transceiver includes direct current to direct current (dc-dc) converter and snooze mode controller.
Texas Instruments Incorporated


06/09/16
20160164507 
 Apparatus and  generating quadrupled reference clock from single-ended crystal oscillator patent thumbnailApparatus and generating quadrupled reference clock from single-ended crystal oscillator
A method, an apparatus, and a computer program product are provided. The apparatus outputs a sinusoidal signal according to a first clock frequency, generates, a first digital signal having a 25% duty cycle based on the sinusoidal signal, generates a second digital signal having a 25% duty cycle based on the sinusoidal signal, combines the first digital signal and the second digital signal to generate a combined digital signal having a 50% duty cycle and a second clock frequency that is double the first clock frequency, and doubles the second clock frequency of the combined digital signal to generate an output signal having a third clock frequency that is quadruple the first clock frequency.
Qualcomm Incorporated


06/09/16
20160164500 
 Digital current sensing in power controller patent thumbnailDigital 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


06/09/16
20160164412 

Current mode switching power supply having separate ac and dc current sensing paths


In a current mode switching power supply, current through the inductor needs to be sensed to control the peak current. The inductor current includes a dc component and an ac component containing switching noise.
Linear Technology Corporation


06/09/16
20160164407 

Method of current compensation based on division-sigma control for dc/dc converter


A method is provided for current compensation. The method is based on division-sigma (d-Σ) control for a dc/dc converter.
National Tsing Hua University


06/09/16
20160160780 

A control system and operating a control system


An electronic control unit suitable for a motorcycle provides diagnostic support, tachometer drive and warning lamp drive all multiplexed onto one pin and driven by a single driver circuit. In a diagnostics mode, the pin is connected to diagnostic equipment.
Efi Analytics, Inc.


06/02/16
20160157314 

Led controllers, drivers and lighting circuits


A controller for controlling a plurality of led lighting strings is disclosed, the controller comprising, for each of the plurality of led lighting strings: a frequency modulator configured to modulate a baseline frequency to generate a time-vary modulated frequency, wherein the frequency modulator is configured to modulate the baseline frequency by a jitter superposed on a regular repeating pattern which varies more slowly than the jitter, to result in the modulated frequency; and a modulated pwm signal generator configured to generate a modulated pwm signal having the modulated frequency and a predetermined duty cycle; wherein the regular repeating patterns for the pwm signals are spaced apart in phase. Associated drivers, led lighting circuits and methods are also disclosed..
Nxp B.v.


06/02/16
20160157181 

Radio resource control technique


A technique for controlling a duty cycle of a transmitter (124) in a mobile device (120) is provided. When the mobile device is wirelessly connected to a telecommunications network (100), discontinuous reception and transmission is provided by a duty cycle including an active state and an inactive state.
Telefonaktiebolaget L M Ericsson (publ)


06/02/16
20160156342 

Electronic device having a delay locked loop, and memory device having the same


An electronic device includes a first duty cycle correction circuit, a delay line, a second duty cycle correction circuit, and a delay control circuit. The first duty cycle correction circuit is configured to detect a duty cycle error of a clock signal by performing time-to-digital conversion on the clock signal, and to generate a corrected clock signal by adjusting a duty cycle of the clock signal based on the duty cycle error of the clock signal.
Samsung Electronics Co., Ltd.


06/02/16
20160156273 

Method and a control circuit with multiple operating modes


A method for controlling a power converter switch to regulate power delivered to an output of a power converter includes operating the power converter switch in first, second, and third duty cycle control modes in response to a feedback signal. The first duty cycle control mode includes modulating a peak switch current of the power converter switch in response to the feedback signal, and switching the power converter switch at a substantially fixed first switching frequency value.
Power Integrations, Inc.


05/26/16
20160149549 

Alarm tone adjustment circuit and electronic device applying the circuit


An alarm tone adjustment circuit includes a sound collection unit with a function of collecting sound of a surrounding environment, an analog-digital (a/d) convertor, and a processing unit. The a/d convertor transforms the sound of a surrounding environment from the sound collection unit to a digital signal.
Hon Hai Precision Industry Co., Ltd.


05/26/16
20160149529 

Generator excitation regulation using pulse width modulation


A system may be configured to provide a regulated generator field current to a generator to acquire a regulated output voltage of the generator. In one example, the system comprises a controller configured to provide an actuator control signal on the basis of an error signal, an actuator configured to provide on the basis of the actuator control signal a pulse-width modulated output voltage that is configured to drive the regulated generator field current into the generator, the pulse-width modulated output signal having a duty cycle controlled by the actuator control signal, and an error evaluator configured to provide the error signal based on a combination of a first deviation signal and a second deviation signal..
Infineon Technologies Ag


05/26/16
20160149480 

Power supply with low voltage protection and operating the same


A power supply with low voltage protection provides an output voltage. The power supply includes a driving switch and a control unit.
Power Forest Technology Corporation


05/26/16
20160149369 

Systems and methods for supplying power to and cooling dental laser systems


A dental laser system is configured to provide high peak laser power, low duty cycle laser pulses, yielding a low average laser power and thus a reduced need for cooling. The laser power system may be configured to provide the electrical power required to produce the low average laser power and not the high peak laser power, and may include a capacitor bank section configured to provide the electrical power needed to produce the high peak power laser pulses.
Convergent Dental, Inc.


05/26/16
20160147248 

Reference signal generator and the method thereof


A reference signal generator used with a switching mode power supply which converts an input voltage to an output voltage. The reference signal generator provides a reference signal consisting of a constant voltage signal and a variable voltage signal which is varying according to a duty cycle of the switching mode power supply during a startup period of the switching mode power supply and is varying according to a ratio of the input voltage at an end of the startup period to the input voltage of real time after the startup period..
Monolithic Power Systems, Inc.


05/19/16
20160142059 

Differential odd integer divider


A differential odd integer divider provides low power and compact sub-harmonics of an applied square or sinusoidal clock signal with self-aligned 50% duty cycle. The odd integer divider circuit includes a set of low power delay cells connected in a ring fashion.
Texas Instruments Incorporated


05/19/16
20160137477 

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


05/19/16
20160135692 

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


05/12/16
20160134377 

Method and transmitting phase shift keyed optical signals


A burst-mode phase shift keying (psk) communications apparatus according to an embodiment of the present invention enables practical, power-efficient, multi-rate communications between an optical transmitter and receiver. Embodiments may operate on differential psk (dpsk) signals.
Massachusetts Institute Of Technology


05/12/16
20160134366 

Optical orthogonal frequency division multiplexing (o-ofdm) system with pulse-width modulation (pwm) dimming


An optical orthogonal frequency division multiplexing (o-ofdm) system with pulse-width modulation (pwm) dimming includes a driver responsive to one or more predetermined dimming set points configured to generate pwm signals having a predetermined duty cycle and configured to supply current to one or more light emitting diodes (leds). An o-ofdm generator responsive to the one or more predetermined dimming set points and digital data is configured to generate digital inverted o-ofdm signals during on-states of the pwm signals and non-inverted o-ofdm signals during off-states of the pwm signals according to the predetermined duty cycle and convert the digital inverted o-ofdm signals and the digital non-inverted o-ofdm signals to analog output o-ofdm signals.
Trustees Of Boston University


05/12/16
20160134192 

Power supply system


A power supply system includes a rectifier circuit, a voltage decreasing circuit, and a feedback circuit. The rectifier circuit receives an ac voltage, and converts the ac voltage to a rectifying dc voltage.
Hon Hai Precision Industry Co., Ltd.


05/12/16
20160134134 

Inductive power supply with duty cycle control


An inductive power supply that maintains resonance and adjusts duty cycle based on feedback from a secondary circuit. A controller, driver circuit and switching circuit cooperate to generate an ac signal at a selected operating frequency and duty cycle.
Access Business Group International Llc


05/12/16
20160134132 

Adaptive inductive power supply


A contactless power supply has a dynamically configurable tank circuit powered by an inverter. The contactless power supply is inductively coupled to one or more loads.
Access Business Group International Llc


05/12/16
20160132625 

Method and system for calculating model parameters for a capacitor to be modelled


Method for calculating model parameters for a capacitor to be modelled, the method comprising the following steps of: incorporating the capacitor to be modelled into a dc to dc converter with at least a first switching element; connecting a resistive load between the output terminals; applying an input voltage to the input terminals of the converter; controlling the first switching element in accordance with a frequency and duty cycle in order to obtain a current varying periodically in time through the capacitor to be modelled; measuring at least a first quantity representative of the current through the capacitor and at least a second quantity representative of the voltage across the capacitor; determining on the basis of the measured first and second quantities at least one current value for the current through the capacitor and at least one voltage value for the voltage across the capacitor.. .
Mindcet Bvba


05/12/16
20160131712 

Wellness monitoring of electromagnetic switching devices


One embodiment describes a tangible, non-transitory, computer-readable medium storing instructions executable by a processor of an operating coil driver circuitry. The instructions include instructions to instruct a switch to supply a specific current to an operating coil of a switching device using a pulse-width modulated signal; determine duty cycle of the pulse-width modulated signal; and determine wellness of the switching device based at least in part on the duty cycle of the pulse-width module signal..
Rockwell Automation Technologies, Inc.


05/12/16
20160131254 

Continuously variable transmission device


In order to reduce the amount of time from when signals are sent to solenoid valves 19, 23, 24 for adjusting hydraulic pressures inside hydraulic pressure chambers of various hydraulic devices 7, 8, 14 assembled in a continuously variable transmission device until the hydraulic pressures are actually changed is shortened, the solenoid valves 19, 23, 24 adjust the hydraulic pressures inside hydraulic pressure chambers connected to hydraulic introduction paths where the solenoid valves 19, 23, 24 are provided by adjusting apertures of the solenoid valves 19, 23, 24 set according to duty cycles, and a controller 16 for the solenoid valves 19, 23, 24, when the apertures of solenoid valves 19, 23, 24 are changed beyond specified values to desired apertures, adjusts the apertures beyond the desired apertures to a state where the apertures have been changed a maximum amount, then after a specified amount of time, returns the apertures to the desired apertures.. .
Honda Motor Co., Ltd.


05/12/16
20160129446 

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 aspect, the present invention provides a method for controlling the temperature of a heater electrode associated with a microfluidic channel of a microfluidic device, wherein power applied to the heater electrode is regulated by varying the duty cycle of a pulse width modulation (pwm).
Canon U.s. Life Sciences, Inc.


05/05/16
20160128162 

Lighting system including time of flight ranging system


A lighting system includes a light emitting diode array, and a time of flight ranging system. A logic circuit determines a distance to an object using the time of flight ranging system and controls the light emitting diode array based upon the distance to the object.
Stmicroelectronics (research & Development) Ltd.


05/05/16
20160128160 

Control of illumination devices using dc-dc converters


In an embodiment, method of controlling an illumination device by an output signal of a dc-dc converter is disclosed. The output signal is controlled by a pwm signal.
Texas Instruments Incorporated


05/05/16
20160128149 

Method and system for modifying a beacon light source for use in a light based positioning system


In one aspect, the present disclosure related to a method for modifying a beacon light source for use in a light-based positioning system. In some embodiments, the method includes selecting a modulation scheme for the light source, determining a duty cycle for the light source based on the modulation scheme, the duty cycle having a proportion of time the light source is in an on state and a corresponding proportion of time the light source is in an off state, the proportion of time the light source is in an off state resulting in reduced luminosity of the light source, and supplying additional power to the light source to compensate for the reduced luminosity of the light source by the duty cycle..
Abl Ip Holding Llc


05/05/16
20160127473 

Vehicle communication system


A communication system for facilitating control over a function of a vehicle (102) comprises a base station (104) positioned in the vehicle (102) and a mobile communication unit (122). The base station (104) comprises a first transmitter for transmitting a signal to the mobile communication unit (122) and a first receiver for receiving a signal from the mobile communication unit (122).
Jaguar Land Rover Limited


05/05/16
20160126839 

Boost converters having self-adaptive maximum duty-cycle-limit control


In one embodiment, a control circuit adjusts a duty cycle of a boost converter and comprises a duty cycle limiter generator configured to receive an input voltage provided to the boost converter and to generate a control signal to be provided to the boost converter for adjusting the duty cycle of the boost converter to control the output voltage of the booster converter in response to the input voltage. In one embodiment, the maximum duty cycle limit generator further generates the maximum duty cycle signal in response to an output voltage of the boost converter..
Qualcomm Incorporated


05/05/16
20160126730 

Current sense techniques in a power supply system


Generally, this disclosure describes a system for sensing current in a power supply system. The apparatus includes controller circuitry to select a first power supply of a plurality of power supplies, determine a reference output voltage (voutr) associated with a reference supply based, at least in part, on a duty cycle (d) and an input voltage (vin), d and vin related to the first power supply.
Intel Corporation


05/05/16
20160126069 

Pulse plasma apparatus and drive method thereof


A pulse plasma apparatus includes a process chamber, source rf generator configured to supply first and second level rf pulse power having first and second duty cycles to an upper electrode of the process chamber, a reflected power indicator configured to indicate reflection rf power, a first matching network, and a controller. The first matching network is configured to match an impedance of the process chamber with an impedance of the source rf generator as a first or second matching capacitance value, respectively when the first level rf pulse power or second level rf pulse power is supplied, respectively.
Samsung Electronics Co., Ltd.


05/05/16
20160125866 

Variable rate adaptive active noise cancellation


A method of audio signal processing includes determining a difference between a first set of filter parameters of a first input frame of an active noise cancellation (anc) filter and a second set of filter parameters of a second input frame of the anc filter. The method further includes selectively modifying a duty cycle of adaptive anc processing associated with the anc filter based on the difference between the first set of filter parameters and the second set of filter parameters..
Qualcomm Incorporated


05/05/16
20160124356 

Image forming apparatus


An image forming apparatus includes: a fixing part including a heater, and a first temperature detection part configured to detect the temperature of the heater; a chopper circuit including a reactor, a freewheeling element, and a switching element, the chopper circuit being configured to switch an input direct current on and off in a specified duty cycle by using the switching element and to supply the current to the heater; and a control part configured to control the duty cycle based on a detection result obtained by the first temperature detection part, as well as to control a switching frequency of the switching element based on an operation mode of the image forming apparatus.. .
Konica Minolta, Inc.


04/28/16
20160119611 

Time of flight depth camera


A method for operating a time of flight (tof) depth camera is provided. The method includes, using an image processing module, interpolating an updated timing delay calibration for each of a plurality of pixel sensors based at least on an updated set of modulation frequency and duty cycle calibration combinations received by the image processing module, the plurality of pixel sensors coupled to a timing clock, and receiving light generated by a light source and reflected in a 3-dimensional environment, the updated set of modulation frequency and duty cycle calibration combinations replacing the corresponding factory-preloaded timing delay calibrations.
Microsoft Corporation


04/28/16
20160118962 

Signal generating system and signal generating method


A signal generating system for generating an output signal with a 50% duty cycle, comprising: a frequency dividing module, comprising an odd number of level triggering devices, for generating a plurality of frequency divided signals utilizing a frequency dividing ratio equaling to m, wherein the m is an positive integer; and a signal combining module, for combining at least two of the frequency divided signals to generate at least one output combined signal. The signal generating system generates the output signal based on the output combined signal.
Mediatek Inc.


04/28/16
20160118960 

System and calibrating chips in a 3d chip stack architecture


A system and method is disclosed for adaptively adjusting a duty cycle of a signal between a first and second chip in a 3d architecture/stack for adaptively calibrating a chip in a 3d architecture/stack. In one embodiment, the system includes a first chip and a second chip located within the 3d chip stack, wherein the first chip generates a calibration signal, the second chip receives the calibration signal and compares it to a reference signal to generate a comparison signal that further compared to a reference duty signal to generate a reference duty comparison signal, that is then provided to the first chip to generate a drive signal that adjusts a duty cycle of the calibration signal..
Taiwan Semiconductor Manufacturing Co., Ltd.


04/28/16
20160118893 

Circuits and methods providing dead time adjustment at a synchronous buck converter


An apparatus and method are disclosed for efficiently using power at a voltage regulator, such as a synchronous buck converter. The synchronous buck converter includes a first switch and a second switch operated by a first control signal and a second control signal, respectively, where the first and second control signals have a corresponding phase difference.
Qualcomm Incorporated


04/28/16
20160116883 

Power supply superimposing direct current voltage on alternating current voltage and outputting resulting voltage


An alternating current generation circuit has a transformer and generates an alternating current voltage in accordance with a pulse signal input to the transformer. A clamp circuit has a constant-voltage element and a current limit element connected in series between the transformer, an output end of the alternating current voltage, and a ground.
Canon Kabushiki Kaisha


04/21/16
20160113085 

Combined hybrid and local dimming control of light emitting diodes


An led backlight controller combines global/hybrid and local brightness/dimming control for an led backlight illuminator with local regions illuminated by associated led strings. Global/hybrid brightness/dimming control performs hybrid digital modulation control for a predefined lower range of brightness levels, with string current maintained at a substantially constant level associated with a predefined maximum brightness for the lower range (controlling brightness by adjusting digital modulation, such as pwm duty cycle, up to a maximum), and performs hybrid string current control for a predefined higher range of brightness levels (controlling brightness by adjusting string current).

04/21/16
20160112181 

Adaptive harq for half duplex operation for battery and antenna constrained devices


A user equipment (ue) implements improved communication methods which enable uplink (ul) transmissions consistent with an ul timeline. The ue may have a transmit duty cycle and may transmit acknowledge/negative acknowledge messages to a base station according to the transmit duty cycle.

04/21/16
20160112162 

Adaptive harq for half duplex operation for battery and antenna constrained devices


A user equipment (ue) implements improved communication methods which enable uplink (ul) transmissions consistent with an ul timeline. The ue may have a transmit duty cycle and may transmit acknowledge/negative acknowledge messages to a base station according to the transmit duty cycle.

04/21/16
20160111894 

Power transmitting unit and power receiving unit with control data communication and methods for use therewith


Aspects of the subject disclosure may include, for example, a wireless power receiver configured to receive a wireless power signal from a power transmitting unit. A wireless radio unit is configured to communicate with the power transmitting unit.

04/21/16
20160111254 

Workpiece processing method and apparatus


A system and method for processing a workpiece is disclosed. A plasma chamber is used to create a ribbon ion beam, extracted through an extraction aperture.

04/21/16
20160110576 

Sequenced illumination in mark reading devices


A reader operable to read a mark on a substrate, the reader comprising a power source, operable to deliver a variable drive current or voltage, a light source operable to illuminate said mark with a sequence of illumination light pulses of different wavelength spectra, an intensity of said illumination light pulses varying according to the delivered drive current or voltage, a light sensor operable to measure an intensity of light received from said mark and to deliver a corresponding light intensity signal, and a control unit operable to control said power source and light sensor to control timings of said illumination light pulses according to a switching pattern and timings to acquire said light intensity signal for synchronizing acquisition of said light intensity signal with said sequence of illumination light pulses, said control unit being further operable to adjust a duty cycle of said switching pattern so as to maintain heat generation associated to each illumination light pulse below a given threshold value.. .

04/14/16
20160105936 

Ripple reduction in light emitting diode (led)-based light bulb through increased ripple on an energy storage capacitor


A buck stage configured as a second stage of a lamp circuit for a light-emitting diode-based (led-based) light bulb may reduce manufacturing costs associated with the bulb by reducing a size of a capacitor in the lamp circuit. A controller of the buck stage may adjust a duty cycle of a switch to increase a ripple, such as a voltage ripple, across the capacitor to increase accessibility of energy stored in the capacitor and decrease a ripple, such as in output current, to the leds..

04/14/16
20160105761 

Method for determining directionality using bluetooth low energy communications


A method and system detect directionality between two objects by measuring angles of signals incident on antenna arrays on at least one side to determine angle of incidence. The methods utilize bluetooth low energy communications as the means for both the control protocol and for providing updated information for deriving directionality.

04/14/16
20160105597 

Cmos video camera and filling light


The present disclosure provides a complementary metal oxide semiconductor (cmos) video camera and method for filling light. The method includes: acquiring a frame interval and an exposure time of each line of pixels; determining a strobe period according to the acquired frame interval and exposure time of each line of pixels; and filling light for each frame of an image by using a light-filling lamp according to the determined strobe period and a predetermined duty cycle, wherein the predetermined duty cycle is larger than 0 and lower than 1.

04/14/16
20160105165 

Duty cycle error detection device and duty cycle correction device having the same


In a duty cycle error detection device, a first digital code generator is configured to generate high and low codes corresponding to a lengths of high level low level periods, respectively, of a clock signal, generate a sign signal representing the longer period between the high level period and the low level period, and output one of the high and low digital codes corresponding to the shorter period as a first digital code. A clock delay circuit is configured to generate a delay clock signal by delaying the clock signal for a time corresponding to the first digital code, and a second digital code generator is configured to generate a duty error digital code corresponding to a length from a start of the longer period of the delay clock signal to an end of the longer period of the clock signal based on the sign signal..

04/14/16
20160105094 

Pre-bias startup of a converter


A method includes comparing, by a voltage-second (vs) controller, a first duty cycle used to control a first switch at a primary side of a power transformer of a dc-to-dc converter with a threshold. The method further includes if a value of the first duty cycle is less than the threshold, controlling, by the vs controller, a second duty cycle used to control a second switch at a secondary side of the power transformer, and maintaining a voltage level at an output voltage node at a non-zero value, and if the value of the first duty cycle is greater than the threshold, controlling, by an output voltage loop, the second duty cycle based on the first duty cycle, and monotonically increasing the voltage level the at the output voltage node from the non-zero value to a predetermined value...

04/14/16
20160104520 

Clock signal processor and non-volatile memory device including the same


A clock signal processor includes a duty cycle corrector, a switch point calculator, and a multiplexer. The duty cycle corrector generates a second clock signal by modifying a duty cycle of a first clock signal.

04/14/16
20160102614 

Impulse duty cycle valves


A valve includes a valve housing having a fluid inlet and a fluid outlet with a longitudinal axis defined through the valve housing. The valve also includes a toggle mechanism configured and adapted to cycle flow from the fluid inlet to the fluid outlet through a plurality of different flow rates in response to repeated impulses.

04/07/16
20160099729 

Apparatus and quadrupling frequency of reference clock


A method, an apparatus, and a computer program product are provided. The apparatus outputs a first sinusoidal signal and a second sinusoidal signal according to a first clock frequency, generates, a first digital signal having a 25% duty cycle based on the first sinusoidal signal, generates a second digital signal having a 25% duty cycle based on the second sinusoidal signal, combines the first digital signal and the second digital signal to generate a combined digital signal having a 50% duty cycle and a second clock frequency that is double the first clock frequency, and doubles the second clock frequency of the combined digital signal to generate an output signal having a third clock frequency that is quadruple the first clock frequency.
Qualcomm Incorporated


04/07/16
20160099651 

Isolated dc-dc power conversion circuit


A power transfer system includes dc-dc power conversion circuitry that has a first switch and a second switch on either side of a transformer with a first capacitor and a second capacitor cross-connected across the transformer. A direction of power transfer is determined, and primary and secondary sides of the dc-dc power conversion circuitry are aligned based on the direction of power transfer.
Toyota Motor Engineering & Manufacturing North America, Inc.


04/07/16
20160096468 

Solid state steerable light


A light assembly for generating a light pattern comprising leds; a first lens positioned in front of the leds to direct light from each led into an illumination field, the illumination fields of energized leds create an illumination pattern and a first edge illumination field and a second edge illumination field; a processor controlling the led duty cycles to move the illumination pattern in a first direction to the side of the first edge illumination field by (i) increasing an led duty cycle associated with the first edge illumination field while decreasing an led duty cycle associated with the second edge illumination field; and (ii) repeating step (i) with the illumination field adjacent the first edge illumination field in the first direction as the first edge illumination field and with the illumination field adjacent the second edge illumination field in the first direction as the second edge illumination field.. .

03/31/16
20160094208 

Dynamic level shifter circuit


A level shifter does not require any dc (standby) current consumption and has a fast operation with low propagation delay. The level shifting from input to output voltage ranges is performed by a pair of level shifting capacitors.
Dialog Semiconductor Gmbh


03/31/16
20160094205 

Digital open loop duty cycle correction circuit


A duty cycle correction (dcc) circuit includes a master delay line that receives an input clock and determines a period of the input clock. A calibration module is coupled to the master delay line and generates a calibration code based on a desired duty cycle and the period of the input clock.
Texas Instruments Incorporated


03/31/16
20160094149 

Observer-based control system for grid-connected dc/ac converters with lcl-filter


Systems, methods, and devices related to controlling a dc/ac converter. A control system uses a nonlinear adaptive observer to estimate the state variables iinv and vc using a sensed grid current and a bus voltage as inputs.

03/24/16
20160088700 

Method and digital detection of the phase-cut angle of a phase-cut dimming signal


A device (220) implements a method (600) of controlling dimming of a light emitting diode (led) light source (230) by: receiving a phase-cut dimming signal (105) produced from an ac line voltage (15), ascertaining the peak voltage level (109) of the ac line voltage (15); ascertaining the present value of a phase-cut duty cycle of the phase-cut dimming signal, employing the peak voltage level of the ac line voltage to ascertain the maximum phase-cut duty cycle for the phase-cut dimming signal, ascertaining the phase-cut angle (107) of the phase-cut dimming signal from the present value of the phase-cut duty cycle of the phase-cut dimming signal and the maximum phase-cut duty cycle for the phase-cut dimming signal; and controlling the dimming of the led light source in response to the phase-cut angle.. .
Koninklijke Philips N.v.


03/24/16
20160088634 

Wireless packet scheduling for satellite positioning system coexistence


Techniques are disclosed for managing wireless transmission duty cycle on a mobile device to mitigate interference during reception of one or more satellite-based positioning signals and transmission of one or more wireless signals, involving (1) determining a first transmission duty cycle, the first transmission duty cycle reflecting a proportion of a time duration occupied by transmission of the one or more wireless signals and (2) delaying transmission of a first wireless packet or transmitting at least one portion of the first wireless packet via the one or more wireless signals, based on a comparison of the first transmission duty cycle and a duty cycle threshold.. .
Qualcomm Incorporated


03/24/16
20160087620 

Apparatus for managing clock duty cycle correction (dcc)


Embodiments of the present invention disclose an apparatus for managing clock duty cycle. The apparatus comprises a duty cycle control circuit (dccc) for receiving at least an input clock signal and generating an output clock signal with adjustable duty cycle, a first low-pass filter with pull-up resistor (lpfpr) for receiving the output clock signal with adjustable duty cycle and simultaneously averaging and raising the common mode of the output thereof, a frequency divider for generating a signal with a 50% duty cycle, a second lpfpr for receiving the generated signal with 50% duty cycle and simultaneously averaging and raising the common mode of the output thereof and an opamp for receiving the outputs of the first and second lpfprs for generating an equivalent reference signal to be fed to the dccc as a control input, thereby facilitating correction of the duty cycle of the input clock signal..

03/24/16
20160087542 

Power overload protection using hiccup mode


A dc-to-dc converter includes a transformer including a primary transformer coil connected to a power input terminal; a secondary transformer coil connected to a power output terminal; a switching circuit including a first sense circuit that detects a voltage condition of the transformer, the voltage received at the first sense circuit being used to regulate the duty cycle of the switch and to initiate a hiccup mode that dissipates power in the primary and/or secondary windings when the voltage condition detected at the first sense circuit indicates an overload of the transformer; a second sense circuit that detects an over-current condition at the switch and/or primary winding; and a further feedback path connected between the second sense circuit and the first sense circuit that provides a second signal to the first sense circuit to boost the first signal when an overload is detected, and to initiate the hiccup mode.. .
Murata Manufacturing Co., Ltd.


03/24/16
20160087541 

Minimum duty cycle control for active snubber


This application provides methods and apparatus for controlling aspects of a synchronous rectifier power converter. In an example, an apparatus can include a minimum duty cycle control circuit configured to receive first control signals for one or more switches associated with the synchronous rectifier power converter, to compare a duty cycle of the first control signals to a minimum duty cycle threshold, and to provide second control signals having at least the minimum duty cycle for an active snubber switch of the synchronous rectifier power converter..
Analog Devices Global


03/24/16
20160087535 

Self-excited power conversion circuit for secondary side control output power


A self-excited power conversion circuit for secondary side control output power includes a comparator unit and a transistor installed directly in a secondary side output module, and the comparator unit is electrically coupled to at least one load, and the transistor is electrically coupled between to a conversion module of the circuit and the load. The comparator unit is provided for adjusting the duty cycle of the transistor after detecting the amount of energy outputted from the conversion module to the load from, so as to adjust the amount of energy actually received by the load to achieve a constant power effect..
Anwell Semiconductor Corp.


03/24/16
20160084890 

Method for preparing a current measuring arrangement, measuring an output current, controller, switched mode power supply, and base station


A method for preparing a current measuring arrangement of a switched mode power supply comprising a switched mode converter, and a controller for controlling the switched mode converter to convert an input voltage to an output voltage by means of controlling the duty cycle, is provided. A model, in which the output current of the converter is determined from variables and one or more model parameters, wherein the variables comprise the input voltage, the output voltage, and the duty cycle, is formed.
Telefonaktiebolaget L M Ericsson (publ)


03/24/16
20160084791 

Identifying ionizable species with voltammetric duty cycles


A sensor system including devices and methods for determining the concentration of an analyte in a sample is described. Input signals including amperometric and voltammetric duty cycles of excitations and relaxations may provide a shorter analysis time and/or improve the accuracy and/or precision of the analysis.
Bayer Healthcare Llc


03/17/16
20160080843 

Optical engines and optical cable assemblies having electrical signal conditioning


Optical engines and optical cable assemblies incorporating optical engines providing duty cycle correction on multiplexed low-speed signals are disclosed. In one embodiment, an optical engine includes a low-speed tx line, a low-speed rx line, an optical transceiver device, and a control circuit.
Corning Optical Communications Llc


03/17/16
20160080673 

High definition camera and method


A high definition (hd) camera and a method for implementing the hd camera is described. A cmos sensor of high frame rate captures frame images and provides light to n consecutive frame images with an interval of m consecutive frame images in the captured frame images using an auxiliary light source when the auxiliary light source is on.
Hangzhou Hikvision Digital Technology Co., Ltd.


03/17/16
20160080106 

Method for assigning prs muting patterns for rstd measurement acquisition


One or more sequences of binary values may be generated based on a length l and a duty cycle d, wherein duty cycle d denotes a percentage of a number of bits of value one in length l. Then, based on an identity of a cell, a sequence may be selected for use by a base station in muting its transmission of a positioning signal.
Qualcomm Incorporated


03/17/16
20160079993 

Integrated circuit having a multiplying injection-locked oscillator


Methods and apparatuses featuring a multiplying injection-locked oscillator are described. Some embodiments include a pulse-generator-and-injector and one or more injection-locked oscillators.
Rambus Inc.


03/17/16
20160079881 

Power supply and supplying power


A power supply includes power modules. Each of the power modules includes an input stage and an output stage.
Delta Electronics, Inc.


03/17/16
20160079859 

Power supply and supplying power


A power supply includes power modules. Each of the power modules includes an input stage configured to convert an input voltage into an intermediate voltage, and an output stage configured to output a dc supply voltage according to the intermediate voltage.
Delta Electronics, Inc.


03/17/16
20160079748 

Over-current protection circuit and method


A determination is made as to when the current flowing through a transistor exceeds a predetermined threshold. When the current exceeds the predetermined threshold, the transistor is deactivated.
Continental Automotive Systems, Inc.


03/10/16
20160073543 

Zoneable power regulation


A system and method for zoneable power regulation are provided herein. A system for zoneable power regulation may include a power supply, a blade system, and a controller.
Hewlett-packard Development Company, L.p.


03/10/16
20160072620 

Phase interpolator


Apparatus to implement several high performance phase interpolators are disclosed. Some embodiments are directed to a full-wave integrating phase interpolation core comprising two pairs of in-phase and quadrature-phase current dacs arranged in a cascode architecture to drive an integrating capacitor and produce an interpolation voltage waveform.
Inphi Corporation


03/10/16
20160072438 

Dynamic gearshift during oscillator build-up based on duty cycle


A dynamic gearshifting system includes a monitoring device configured to monitor a duty cycle of a clock output signal of a crystal oscillator circuit during oscillation buildup upon power-up of the crystal oscillator circuit. The dynamic gearshifting system also includes a detecting device configured to detect whether the duty cycle of the clock output signal of the crystal oscillator circuit meets a duty cycle threshold value.
Gainspan Corporation


03/10/16
20160072331 

Method for limiting battery discharging current in battery charger and discharger circuit


A power supply system includes a rechargeable battery to deliver a supply current to a load and a circuit to limit a discharge current when the rechargeable battery is supplying power to the load. The power supply system may further include an integrator for integrating a discharge voltage representing the discharge current that exceeds a predetermined limit, a pulse-width-modulation (pwm) circuit for producing a control signal having a pwm duty cycle representing the discharge voltage, and a driver circuit for delivering the supply current to said load according to said control signal.
Texas Instruments Incorporated




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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