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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
04/07/16
20160099729 
 Apparatus and  quadrupling frequency of reference clock patent thumbnailApparatus 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 patent thumbnailIsolated 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 patent thumbnailSolid 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 patent thumbnailDynamic 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 patent thumbnailDigital 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 patent thumbnailObserver-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 patent thumbnailMethod 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 patent thumbnailWireless 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) patent thumbnailApparatus 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 patent thumbnailPower 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


02/18/16
20160047904 

Method for measuring a time of flight


A method of measuring the phase of a response signal relative to a periodic excitation signal, comprises the steps of producing for each cycle of the response signal two transitions synchronized to a clock and framing a reference point of the cycle; swapping the two transitions to confront them in turns to the cycles of the response signal; measuring the offsets of the confronted transitions relative to the respective reference points of the cycles; performing a delta-sigma modulation of the swapping rate of the two transitions based on the successive offsets; and producing a phase measurement based on the duty cycle of the swapping rate.. .
Stmicroelectronics (grenoble 2) Sas


02/11/16
20160044597 

Receiver state estimation in a duty cycled radio


A method for receiver state estimation includes communicating, from a first communications device to a second communications device, a first plurality of wake-up frames; receiving, at the first communications device from the second communications device, an indication of a received wake-up frame of the communicated first plurality of wake-up frames; determining, by the first communications device, a time at which the second communications device is in a ready state based on the received indication; subsequently communicating, from the first communications device to the second communications device, a second plurality of wake-up frames. The first plurality is greater than the second plurality, the reduction in number from the first plurality to the second plurality being based on the determined time at which the second communications device is in a ready state..
Google Inc.


02/11/16
20160043628 

Power conversion apparatus and protection method thereof while feedback current signal being abnormal


A power conversion apparatus and a protection method of the power conversion apparatus while a feedback current signal of the power conversion apparatus is abnormal are provided. The protection method includes a step of stopping switching a power switch if a duty cycle of a pulse width modulation signal is continuously greater than a preset duty cycle for at least one signal cycle and a voltage of a current sensing signal is smaller than a preset voltage level during the at least one signal cycle..
Power Forest Technology Corporation


02/11/16
20160041539 

Control device diagnostic using accelerometer


A diagnostic device is physically coupled to a control device in a process control system, and includes an accelerometer that determines when a motion or vibration of the control device is greater than a predetermined threshold. When this condition is detected, one or more other components of the diagnostic device (e.g., processor, communication module, etc.) are activated, and a distress signal is transmitted from the diagnostic device using the activated components.
Fisher Controls International Llc


02/11/16
20160041212 

Periodic signal measurement using statistical sampling


A fully-digital probabilistic measurement methodology in which a periodic signal generated on an ic device is sampled multiple times during a test period, with the asserted/de-asserted state of the periodic signal determined during each sampling event. A statistically significant number of sampling events are executed according to a reference signal frequency that is uncorrelated to the ic's system clock, whereby each successive sampling event involves detecting an essentially random associated phase of the periodic signal such that the probability of detecting an asserted state during any given sampling event is proportional to the duty cycle of the periodic signal.
Synopsys, Inc.


02/11/16
20160038340 

System and controlling a transverse phacoemulsification system using sensed data


A method and system for use in an ocular surgical procedure is provided. The design includes a handpiece having an ultrasonically vibrating tip operational within a plurality of operating modes including a first operating mode and a sensing device, such as a vacuum pressure sensor.
Abbott Medical Optics Inc.


02/04/16
20160037600 

Backlight unit and display device


The invention provides a backlight unit used in a display device. The backlight unit includes a light source which is driven by a pulse wave having a predetermined duty cycle.
Innolux Corporation


02/04/16
20160036330 

Apparatus and methods for integrated power converter with high bandwidth


A dc-dc power converter includes a switched inductor power converter and a parallel linear voltage regulator. Two transistors are positioned in the switched inductor power converter to periodically set a bridge voltage thereby producing a square wave with a fixed frequency and variable duty cycle.
Ferric Inc.


02/04/16
20160035155 

Duty cycle recording estimation of damage and remaining life of drivetrain components


A duty cycle recording system and method is disclosed for a vehicle with a drivetrain having a plurality of components and sensors. The duty cycle recording system may include a control unit and communication link.
Deere & Company


01/28/16
20160029453 

Control unit for a led assembly and lighting system


A control unit for an led assembly comprising a first and second led unit, said led units being serial connected is described. The led assembly, in use, is powered by a switched mode power supply.
Eldolab Holding B.v.


01/28/16
20160029132 

Sliding bias and peak limiting for optical hearing devices


A processor comprises instructions to adjust a bias of an input signal in order to decrease a duty cycle of a pulse modulated optical signal. The bias can be increased, decreased, or maintained in response to one or more measured values of the signal.
Earlens Corporation


01/28/16
20160027616 

System and selective coil excitation in inductively coupled plasma processing reactors


Spatial distribution of rf power delivered to plasma in a processing chamber is controlled using an arrangement of primary and secondary inductors, wherein the current through the secondary inductors affects the spatial distribution of the plasma. The secondary inductors are configured to resonate at respectively different frequencies.
Applied Materials, Inc.


01/28/16
20160026059 

Method for control of electrochromic device


A method for control of electrochromic devices is revealed. First a duty cycle of pwm is changed to a preset q value according to a signal detected by a detector while the electrochromic device is switched to the colored state.
Tintable Smart Material Co., Ltd.


01/28/16
20160022997 

Active implantable medical device for nerve stimulation therapy with dynamic adjustment of stimulation periods


An active implantable medical device for neurostimulation therapy is disclosed. The device produces stimulation pulse sequences generated continuously in succession during activity periods separated by intermediate inactivity periods during which no stimulation is issued.
Inserm - Institut National De La Sante Et De La Recherche Medicale


01/21/16
20160018126 

Controller for automatic control of duty cycled hvac&r equipment, and systems and methods using same


An electronic controller device for automatic control of a heating, ventilating, air conditioning or refrigeration (hvac&r) system, which has at least a delayed start controller that is capable of delaying sending of a signal to power on a load unit and achieve a selected conditioned space temperature variation, and a demand regulator controller that is capable of calculating on times and off times to obtain a selected electrical demand. The electronic controller device can include a computer-readable storage medium that comprises programs to implement the delayed start and demand regulator controllers, and optionally other controller modules, can delay oem on signals and/or adjust the “on” and “off” states, and/or provide other load unit control, to manage and reduce energy consumption and/or demand..
Pacecontrols, Llc


01/14/16
20160013801 

Reference-frequency-insensitive phase locked loop


A phase locked loop may be operable to generate, utilizing a frequency doubler, a reference clock signal whose frequency is twice a frequency of a crystal clock signal and is keyed on both rising and falling edges of the crystal clock signal. A sampled loop filter (slpf) in the phase locked loop may capture charge from a charge pump (chp) in the phase locked loop and the charge is captured at a frequency corresponding to the frequency of the reference clock signal.
Maxlinear, Inc.


01/14/16
20160013785 

Duty cycle correction circuit and semiconductor device


According to one embodiment, there is provided a duty cycle correction circuit including an input inverter, an output inverter, a charge distribution unit, and a drawing-off unit. The input inverter includes a pmos transistor and an nmos transistor and receives a clock signal.
Kabushiki Kaisha Toshiba


01/14/16
20160013778 

Circuits, devices and methods for achieving small duty cycles in switching regulators


Circuits, devices and methods for achieving small duty cycles in switching regulators. In some embodiments, a method for generating a low duty cycle output voltage can include setting a ramp signal to a first level substantially with a first edge of a clock signal, and ramping the ramp signal from the first level towards a second level such that voltage level of the ramp signal crosses a compensation level, with the ramping beginning at a time before a second edge of the clock signal.
Skyworks Solutions, Inc.


01/14/16
20160013725 

High efficiency power converter


A power converter nearly losslessly delivers energy and recovers energy from capacitors associated with controlled rectifiers in a secondary winding circuit, each controlled rectifier having a parallel uncontrolled rectifier. First and second primary switches in series with first and second primary windings, respectively, are turned on for a fixed duty cycle, each for approximately one half of the switching cycle.
Synqor, Inc.


01/14/16
20160011636 

System and use for energy efficient applications driven by multiple context clocks for personal energy footprint management


A power state management system of an electronic system is coupled to a plug load device and a method for operation of the same. The system includes a context clock to adjust a duty cycle of the electronic system for controlling the power states of the electronic system for more efficient use of electricity.
The Regents Of The University Of California


01/14/16
20160009556 

Systems and methods for growing a non-phase separated group-iii nitride semiconductor alloy


Systems and methods for mbe growing of group-iii nitride alloys, comprising establishing an average reaction temperature range from about 250 c to about 850 c; introducing a nitrogen flux at a nitrogen flow rate; introducing a first metal flux at a first metal flow rate; and periodically stopping and restarting the first metal flux according to a first flow duty cycle. According to another embodiment, the system comprises a nitrogen source that provides nitrogen at a nitrogen flow rate, and, a first metal source comprising a first metal effusion cell that provides a first metal at a first metal flow rate, and a first metal shutter that periodically opens and closes according to a first flow duty cycle to abate and recommence the flow of the first metal from the first metal source.
Georgia Tech Research Corporation


01/14/16
20160008961 

Power tool


The purpose of the present invention is to use a motor with as high an output as possible to complete tightening operations at a high speed while limiting continuous drive output. In a power tool having a plurality of impact operation modes, the motor thereof is controlled at a 100% duty cycle so as to rotate at a high speed in the period between pulling of a trigger and starting of an impact operation (71a-71b), and the duty cycle is changed to a low duty cycle matching the appropriate operation mode after an impact by an impact mechanism is started and a predetermined stroke is performed so that the motor is driven at the low duty cycle until the trigger is returned (arrow 71c-71d).
Hitachi Koki Co., Ltd.


01/14/16
20160008222 

Implantable electroacupuncture device and treating obesity


An exemplary method for treating obesity in a patient comprising the steps of 1) implanting a coin-sized electroacupuncture (ea) device in the patient below the patient's skin at at least one specified stimulation site, 2) enabling the ea device to generate stimulation sessions at a duty cycle that is less than 0.05, each stimulation session comprising a series of stimulation pulses, wherein the duty cycle is the ratio of t3/t4, where t3 is the duration in minutes of each stimulation session, and t4 is the time in minutes between stimulation sessions, and 3) delivering the stimulation pulses of each stimulation session to the at least one specified stimulation site through at least two electrodes/arrays attached to an outside surface of the ea device.. .
Valencia Technologies Corporation


01/14/16
20160008221 

Implantable electroacupuncture treating dyslipidemia and obesity


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


01/07/16
20160007416 

Light-emitting diode lighting device having multiple driving stages and line/load regulation control


An led lighting device includes multiple luminescent devices driven by a rectified ac voltage. The multiple luminescent devices are turned on flexibly in a multi-stage driving scheme using multiple current controllers.
Iml International


01/07/16
20160006421 

Frequency synthesiser circuit


The invention relates to frequency synthesiser circuits, and in particular to frequency synthesiser circuits characterised by a small channel spacing. Embodiments disclosed include a frequency synthesiser circuit (100) for a radio receiver, the circuit comprising: a digitally controlled oscillator (118) configured to generate an output signal (128) with an output frequency on application of an oscillator enable signal (126); a delay module (160; 210) configured to delay an input reference signal (142) to generate a delayed reference signal (144; 244); and a duty cycle module (150) configured to modulate the oscillator enable signal based on a period of an input reference signal (142) and the delay of the delayed reference signal (144), such that a ratio between the output frequency and the frequency of the input reference signal (142) is a non-integer..
Nxp B.v.


01/07/16
20160006347 

Power supply apparatus, control apparatus, and program therefor


A power supply apparatus includes: an inductor to which an input voltage is applied; a switching element that switches a current flowing to the inductor on and off so as to cause an induced voltage to be generated; an electrolytic capacitor that smoothes the induced voltage and outputs the voltage to a load; and a control circuit that controls the switching element, wherein the control circuit outputs a second switching control signal obtained by superimposing a degradation detection-purpose signal for detecting degradation of the electrolytic capacitor on a first control signal, detects an output voltage output by switching performed by the switching element controlled by the second control signal, and estimates the degradation of the electrolytic capacitor by using the output voltage detected, a duty cycle of the first control signal, and a frequency component of the degradation detection-purpose signal contained in the output voltage detected.. .
Fujitsu Limited


01/07/16
20160005556 

High power current switch


A high power switching circuit suitable for injection of high currents, typically several tens of amperes, at high drive voltages of up to 5-10 kv, is provided using a combination of electromechanical and semiconductor switching elements that, while providing switchable polarity, substantially bypasses semiconductor switching element(s) during a substantial portion of current injection duty cycles. In this way, thermal heating of switching elements can be reduced/managed in a way that improves long term reliability of geophysical survey equipment.
Advanced Geosciences, Inc.


01/07/16
20160005174 

System and synchronizing fiducial markers


A system of active fiducial markers for pose calculation of head mounted displays is described in which information is exchanged among said markers for the purpose of synchronization. Fiducial patterns are made more easily identifiable by selective duty cycles of sub groups of synchronized emitters and means is described to propagate pose information among markers..
Technical Illusions, Inc.


01/07/16
20160003189 

System, apparatus, and thrust vectoring


In various embodiments, the thrust vectoring systems described herein create variable reverse thrust during a landing event. The reverse thrust may be varied based on manual inputs, dynamically changing operating events, or a landing duty cycle.
Rohr, Inc.


01/07/16
20160001398 

Laser processing sapphire


Laser processing of sapphire is performed 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 (hereinafter “qcw laser”). Laser processing of sapphire using a qcw laser may be performed with a lower duty cycle (e.g., between about 1% and 10%) and in an inert gas atmosphere such as argon or helium.
Ipg Photonics Corporation


12/31/15
20150382439 

Resistive bypass for series lighting circuit


A resistor bypass circuit for a series lighting circuit includes a plurality of serially connected light sources and a bypass resistor being connected in parallel with at least one of the respective light sources, each respective light source being low wattage and being capable operating on a one hundred percent duty cycle as desired.. .
Seasonal Specialties, Llc


12/31/15
20150381060 

Quasi-resonant half-bridge converter and control method thereof


A quasi-resonant half-bridge converter includes a switch unit including first and second switches that are coupled in series, a capacitor unit coupled to the switch unit in parallel, a rectifier unit, an output capacitor, and a transformer coupled to the aforesaid components. The first and second switches are respectively controlled using first and second control signals that have a constant frequency.
Lite-on Technology Corp.


12/31/15
20150381049 

Power converter with pseudo-constant-on-time control and the control circuit and method thereof


A control circuit for controlling a switching circuit is disclosed. The control circuit has a ramp compensation circuit, a ramp regulating circuit and a comparison circuit.
Chengdu Monolithic Power Systems Co., Ltd.


12/31/15
20150381038 

Circuits, devices and methods for bypassing voltage regulation in voltage regulators


Circuits, devices, and method for bypassing voltage regulation in voltage regulators. A voltage regulator may include a duty cycle component configured to determine whether a duty cycle of the voltage regulator is greater than a threshold duty cycle.
Skyworks Solutions, Inc.


12/31/15
20150381035 

Droop reduction circuit for charge pump buck converter


A charge pump buck converter (cpbc) includes a bc including an inductor and a cp coupled in parallel. Control logic is coupled to a switch driver coupled to a power switch(es).
Texas Instruments Incorporated


12/31/15
20150381034 

Charge pump device and driving capability adjustment method thereof


A charge pump device includes a driving stage, for generating a driving signal corresponding to a driving capability, a charge pump circuit, for generating an output voltage according to the driving signal, a comparing circuit, for generating a comparison result according to the output voltage and a reference voltage, a duty cycle detecting circuit, for detecting a length of a duty cycle of an indicating signal indicating the comparing result, to generate a detection result indicating the duty cycle, and a driving capability control circuit, coupled between the duty cycle detecting circuit and the driving stage, for controlling the driving capability corresponding to the driving signal according to the detection result.. .
Novatek Microelectronics Corp.


12/31/15
20150378368 

Method for operating a switch valve


A method for operating a switch valve which opens and closes a fluid line is disclosed. The switch valve is actuated by a pulse width modulated signal.
Continental Automotive Gmbh


12/31/15
20150377967 

Duty cycle based timing margining for i/o ac timing


Testing i/o (input/output) eye width for an interface with an inverted modulated strobe or clock signal. An i/o interface includes multiple signal lines, each with a hardware i/o buffer with timing characteristics.

12/31/15
20150377431 

Induction rechargeable electronic candle system


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


12/31/15
20150375328 

Welding power supply with digital controller


A welding power supply including power conversion circuitry adapted to receive a primary source of power, to utilize one or more power semiconductor switches to chop the primary source of power, and to convert the chopped power to a welding output is provided. The provided welding power supply includes a pulse width modulated (pwm) digital controller including gate drive circuitry that generates a pwm output signal that controls the switching of the one or more power semiconductor switches.
Illinois Tool Works Inc.


12/31/15
20150375187 

Photocatalyst air purification system with ultraviolet light emitting diodes operated with a duty cycle


An air purification system includes a photocatalyst on a support disposed to contact airflow through an airflow channel passing across or through the support; an ultraviolet light emitting diode (uv-led) disposed to emit ultraviolet light onto the photocatalyst, the uv-led operated at a less than one hundred percent duty cycle, the duty cycle determined at least in part as a function of a desired minimum volatile organic compound conversion rate of air flowing through the airflow channel and a desired maximum by-product concentration of air flowing through an outlet of the airflow channel.. .
Honeywell International Inc.


12/24/15
20150373807 

Light emitting diode driving apparatus capable of detecting whether current leakage phenomenon occurs on led load and light emitting diode driving method thereof


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


12/24/15
20150372605 

Controlling a switched mode power supply with maximised power efficiency


A control circuit operable to generate a control signal to control the duty cycle of a switched mode power supply is provided. The control circuit comprises an input terminal for receiving a signal indicative of an input voltage (vin) of the switched mode power supply, and a reference signal generator to generate, in dependence upon the received signal, a reference signal (vr) that is a function of the input voltage (vin).
Telefonaktiebolaget L M Ericsson (publ)


12/24/15
20150372359 

Pulsed mode apparatus with mismatched battery


A pulse mode apparatus comprises a mismatched battery electrically connected to a pulse mode device having a pulse duty cycle with a power-on time period and a power-off time period. The mismatched battery comprises a first battery cell having a first internal resistance and first charge capacity, and a second battery cell having a second internal resistance and second charge capacity, and the battery comprises at least one of the following: (1) the second internal resistance is less than the first internal resistance, and (2) the second charge capacity is less than the first charge capacity.
Front Edge Technology, Inc.


12/24/15
20150369685 

Method for determining the opening point of a valve


Disclosed is a method for determining the opening point po of a two-position valve (1) controlled by a pulse width-modulated signal (6), the method including the following steps: controlling the valve (1) by a pulse width-modulated test signal st having a duty cycle r growing as a function of time t; and detecting an opening of the valve (1) by observation of a variation in the time of a detection signal s provided by a pressure signal (7) measured by a pressure sensor (2) arranged in a pipe (4, 5) connected to the valve (1) and noted at a moment to of the variation of the detection signal s, the opening point po being the duty cycle r of the test signal st at the noted moment to.. .
Continental Automotive Gmbh


12/24/15
20150367792 

Control and diagnostics of multiple electrical generating machines using an external voltage regulator


An electrical system for an automotive vehicle has a plurality of electrical generating machines having field windings energized by pulse width modulated drive signals generated by an external electronic voltage regulator. The pulse width modulated drive signals have a duty cycle determined by the electronic voltage regulator.



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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