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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
05/19/16
20160142059 
 Differential odd integer divider patent thumbnailDifferential 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 patent thumbnailSystem 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 patent thumbnailMethods 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 patent thumbnailMethod 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 patent thumbnailOptical 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 patent thumbnailPower 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 patent thumbnailInductive 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 patent thumbnailAdaptive 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 patent thumbnailMethod 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 patent thumbnailWellness 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


03/10/16
20160069231 

Control system for electric vehicle


A control system for electric vehicle is provided. The control system is applied to an electric vehicle (ve) having a motor (2, 3) and an electric oil pump (19) driven by a pumping motor (20).
Toyota Jidosha Kabushiki Kaisha


03/10/16
20160067496 

Systems and methods for enhancing or affecting neural stimulation efficiency and/or efficacy


Systems and methods for enhancing or affecting neural stimulation efficiency and/or efficacy are disclosed. In one embodiment, a system and/or method may apply electromagnetic stimulation to a patient's nervous system over a first time domain according to a first set of stimulation parameters, and over a second time domain according to a second set of stimulation parameters.
Advanced Neuromodulation Systems, Inc., D/b/a St. Jude Medical Neuromodulation Division


03/03/16
20160066316 

Low-latency, low-bandwidth and low duty cycle operation in a wireless communication system


Methods, systems, and devices are described for providing allocations and signaling for different types of communications within a wireless communication system. An enb and/or a ue may be configured to operate within the wireless communication system using two or more different types of communications.
Qualcomm Incorporated


03/03/16
20160066276 

User equipment transmit duty cycle control


In some embodiments, a user equipment device (ue) implements improved communication methods which include radio resource time multiplexing, dynamic sub-frame allocation, and ue transmit duty cycle control. In some embodiments, the ue may communicate with base stations using radio frames that include multiple sub-frames, transmit information regarding allocation of a portion of the sub-frames of a respective radio frame for each of a plurality of the radio frames, and transmit and receive data using allocated sub-frames and not using unallocated sub-frames.
Apple Inc.


03/03/16
20160065083 

Power conversion apparatus, power conversion method, motor system, and three-phase motor


A power conversion method including: receiving, by a pair of input terminals, an input voltage in which is a single-phase ac voltage; designating a first target voltage ref1, a second target voltage ref2, and a third target voltage ref3 respectively representing consecutive target values of first-phase, second-phase, and third-phase output voltages forming a three-phase ac voltage; and cyclically connecting and disconnecting (i) the input terminals and first output terminals at a duty cycle corresponding to . .
ref1/in


03/03/16
20160065049 

Lcl capacitor current compensation and control method based on division and summation technique


An lcl capacitor current compensation and control method based on division and summation technique, comprising following steps: calculating new reference current i*lr=power grid reference current (igr)+estimated capacitor current (); calculating duty cycle ratio d of respective switches in inverter to obtain inductor current (il), through using corresponding division-and-summation digital control characteristic equation (a), (b), (c), or (d), as based on inverter code of various inverter types; calculating power grid current (ig)=inductor current (il)−capacitor current (ic); calculating voltage across inductor at power grid side (vc−vp)=impedance (zg) of said inductor at power grid side x power grid current (ig); utilizing equation (4) to calculate voltage across capacitor (vc); estimating capacitor current ()=voltage across said capacitor (vc)/filtering capacitor impedance (zc); and utilizing equation (3) to estimate capacitor current ().. .
National Tsing Hua University


03/03/16
20160065004 

Systems and methods for remotely controlling a wall socket


A system permits wirelessly controlling the duty cycle of alternating current at a wall electrical outlet (152) remote from a wall electrical outlet (144) which is controlled by a wall switch (142).. .
E5 Global Innovations, Inc.


03/03/16
20160064992 

Operating an inductive energy transfer system


A receiver device in an inductive energy transfer system can include a touch sensing device. If the input surface of the touch sensing device is touched, a transmitter device can periodically stop transferring energy to allow the touch sensing device to sense touch samples while inductive energy transfer is inactive.
Apple Inc.


03/03/16
20160064966 

System and charging a capacitor used to power measurement-while-drilling equipment


A system for charging a capacitor used to power measurement-while-drilling equipment includes a power bus, which is electrically connected to the capacitor; a first pair of battery terminals; switching circuitry for electrically connecting the power bus to and disconnecting the power bus from the first pair of battery terminals; and a controller, for controlling the switching circuitry, which is configured to charge the capacitor by applying a first pulse width modulated control signal to control the switching circuitry. The first pulse width modulated control signal has a duty cycle selected such that the voltage of the first battery remains above a first minimum operating voltage while the capacitor is being charged..
Evolution Engineering Inc.


03/03/16
20160061723 

Focused beam scatterometry apparatus and method


The capacity to measure nanoscale features rapidly and accurately is of central importance for the monitoring of manufacturing processes in the production of computer integrated circuits. It is known that far-field scattered light requires a priori sample information in order to reconstruct nanoscale information such as is required in semiconductor metrology.
University Of Rochester


03/03/16
20160061171 

Providing a boost voltage with a transient operation


A system, method and circuit for providing a boost voltage with a transient operation of a vehicular start-stop system are provided. The system includes a duty cycle or current monitor to detect a change in duty cycle or current based on the transient operation; a crank time-out detector to determine whether the change in duty cycle is over a predetermined threshold; and a reset generator to generate a reset of a boost circuit that generates the boost voltage after a predetermined delay..

03/03/16
20160059354 

System and laser beveling and/or polishing


Laser processing of hard dielectric materials may include cutting a part from a hard dielectric material using a continuous wave laser operating in a quasi-continuous wave (qcw) mode to emit consecutive laser light pulses in a wavelength range of about 1060 nm to 1070 nm. Cutting using a qcw laser may be performed with a lower duty cycle (e.g., between about 1% and 15%) and in an inert gas atmosphere such as nitrogen, argon or helium.
Ipg Photonics Corporation


03/03/16
20160059349 

Multi-laser cutting and post-cut processing hard dielectric materials


Laser processing of hard dielectric materials may include cutting a part from a hard dielectric material using a continuous wave laser operating in a quasi-continuous wave (qcw) mode to emit consecutive laser light pulses in a wavelength range of about 1060 nm to 1070 nm. Cutting using a qcw laser may be performed with a lower duty cycle (e.g., between about 1% and 15%) and in an inert gas atmosphere such as nitrogen, argon or helium.
Ipg Photonics Corporation


02/25/16
20160056979 

Duty-cycled equalizations


An information handling system (ihs) selectively performs duty-cycled equalization of data transmission on a communication link between a sending component and a receiving component. A controller activates an equalizer associated with the communication link.
Dell Products, L.p.


02/25/16
20160056807 

Apparatus, system, and re-synthesizing a clock signal


Described herein are apparatus, method, and system for re-synthesizing a clock signal. The apparatus comprises: a first logic unit to detect a rising edge of an input clock signal and for generating a rising edge of an output clock signal based on the detected rising edge of the input clock signal, the input clock signal having a non-50% duty cycle and a first period; and a second logic unit to compute a falling edge of the output clock signal according to the detected rising edge of the input clock signal, the falling edge of the output clock signal being near half of the first period..
Intel Corporation


02/25/16
20160056804 

Clock signal distribution power efficiency improvement


A circuit may include a pulse generation circuit configured to receive a first clock signal with a first-clock rate and a first-clock duty cycle. The pulse generation circuit may be configured to generate, based on the first clock signal, a pulse signal with a pulse frequency and with a pulse duty cycle that is smaller than the first-clock duty cycle.
Fujitsu Limited


02/25/16
20160054744 

Digitally controlled ac protection and attenuation circuit


A protection and attenuation circuit for sensitive ac loads is described. The circuit provides ac power protection and attenuation utilizing high-efficiency switch-mode techniques to attenuate an ac power signal by incorporating a bidirectional, transistorized switch driven from a pulse width modulation signal, pwm.
Dolby Laboratories Licensing Corporation


02/25/16
20160054383 

Semiconductor structure having test device


There is set forth herein a semiconductor structure including a plurality of test devices, the plurality of test devices including a first test device and a second test device. A semiconductor structure can also include a waveform generating circuit, the waveform generating circuit configured for application of a first stress signal waveform having a first duty cycle to the first test device, and a second stress signal waveform having a second duty cycle to the second test device.
Globalfoundries Inc.


02/25/16
20160052366 

Windshield defogging system and method


A windshield defogging system and method are provided. The system includes a heated windshield with an electrical heating element, an air circulation system with a blower to provide a stream of air over a surface of the windshield and a controller configured to select a duty cycle for the heating element based upon air circulation system operating parameters and environmental conditions such as ambient temperature..
Ford Global Technologies, Llc


02/25/16
20160051442 

Implantable electroacupuncture treating depression and similar mental conditions


A method of treating a mental disorder of a patient includes 1) generating, by an electroacupuncture device implanted beneath a skin surface of the patient at or near an acupoint corresponding to at least one of a trigeminal nerve and an occipital nerve of the patient, stimulation sessions at a duty cycle that is less than 0.05, and 2) applying, by the electroacupuncture device, the stimulation sessions to at least one of the trigeminal nerve and the occipital nerve by way a central electrode and an annular electrode located on the electroacupuncture device in accordance with the duty cycle.. .
Valencia Technologies Corporation


02/18/16
20160050735 

Dimming system and operating method thereof


A dimming system comprises a controller and an ac-to-dc converter. The controller outputs a control signal in response to a dimming signal.
Industrial Technology Research Institute


02/18/16
20160050727 

Driving circuit for a light emitting component and control circuit thereof


A driving circuit includes a control circuit and a boost converter circuit. The control circuit receives a sense voltage associated with a direct-current (dc) source voltage, and generates a control signal with a duty cycle that varies with the sense voltage in a monotonically increasing manner.

02/18/16
20160049883 

Power-balancing circuits for stacked topologies


In one aspect, a method is described. The method may include operating a plurality of circuit elements, and operating a plurality of magnetically-coupled power-balancing circuits.
Google Inc.


02/18/16
20160049860 

Switched power stage and a controlling the latter


The disclosure relates to a method of generating an output voltage, comprising: generating a regulated output voltage from a high voltage source; providing an inductor having a first terminal and a second terminal linked to a low voltage source by a capacitor, the second inductor terminal supplying the output voltage to a load; connecting the first inductor terminal exclusively either to the high voltage source or to the low voltage source or to the second inductor terminal, as a function of command signals to reduce a difference between the output voltage and a reference voltage lower than a high voltage supplied by the high voltage source; and generating a square binary control signal having a duty cycle substantially adjusted to the ratio of the output voltage to the high voltage; the first inductor terminal being connected to the high voltage source or to the low voltage source as a function of a binary state of the control signal.. .
Endura Technologies Llc




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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