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Duty Cycle patents



      
           
This page is updated frequently with new Duty Cycle-related patent applications. Subscribe to the Duty Cycle RSS feed to automatically get the update: related Duty RSS feeds. RSS updates for this page: Duty Cycle RSS RSS


Enhanced numerical controlled oscillator

Measurement of plural rf sensor devices in a pulsed rf plasma reactor

Switching regulator control method

Date/App# patent app List of recent Duty Cycle-related patents
08/21/14
20140233005
 System and method for adjusting seed laser pulse width to control euv output energy patent thumbnailSystem and method for adjusting seed laser pulse width to control euv output energy
A method and apparatus for controlling the seed laser in a laser produced plasma (lpp) extreme ultraviolet (euv) light system are disclosed. In one embodiment, a seed laser generates both pre-pulses and main pulses which are amplified and irradiate a target material.
08/21/14
20140232474
 Enhanced numerical controlled oscillator patent thumbnailEnhanced numerical controlled oscillator
A numerical controlled oscillator generating an output signal with a digital clock signal having a variable frequency is disclosed. The numerical oscillator is controlled by a programmable numerical value being subject to a transfer function and comprises a comparator configured to compare an output of the transfer function with a duty cycle register to generate the output signal..
08/21/14
20140232374
 Measurement of plural rf sensor devices in a pulsed rf plasma reactor patent thumbnailMeasurement of plural rf sensor devices in a pulsed rf plasma reactor
In a plasma reactor having pulsed rf plasma power sources, measurements by rf sensors of nulls attributable to pulse duty cycles are replaced by non-zero measurements synthesized from prior non-zero measurements, to prevent feedback control system instabilities.. .
08/21/14
20140232367
 Switching regulator control method patent thumbnailSwitching regulator control method
A control method for preventing an output voltage of a buck switching regulator from falling when an input voltage of the buck switching regulator falls includes: converting the input voltage into a charging current; determining a duty cycle of the buck switching regulator according to the charging current and the output voltage; and adjusting a switching frequency of a pulse width modulation signal in the buck switching regulator when the input voltage falls to a specific voltage and an off time of the pulse width modulation signal reaches a minimum value, in order to change the duty cycle to prevent the output voltage from falling.. .
08/21/14
20140232288
 Solid state lighting apparatuses and related methods patent thumbnailSolid state lighting apparatuses and related methods
Solid state lighting apparatuses are adapted to operate with alternating current (ac) received directly from an ac power source. An exemplary apparatus includes a substrate and multiple sets of one or more solid state light emitters disposed over the substrate.
08/21/14
20140232279
 Supplemental load circuit for low power traffic lamps patent thumbnailSupplemental load circuit for low power traffic lamps
The present disclosure provides a supplemental load circuit configured to provide a supplemental power consumption to enable a lamp unit operating at a low power consumption to operate with a traffic controller configured to test for a higher power consumption. The supplemental load circuit includes a load, power input circuitry configured to receive a dc power signal from the lamp unit, and a control switch configured to receive a control signal having a duty cycle from the lamp unit.
08/21/14
20140232196
 Power conditioning circuit to maximize power delivered by a non-linear generator patent thumbnailPower conditioning circuit to maximize power delivered by a non-linear generator
A circuit receives variable voltage and current from a renewable power source and optimally loads the source to maximize power delivered into a dc bus having constant voltage. A boost circuit and synchronous rectifier having a controlled duty cycle step up the voltage from the renewable source.
08/21/14
20140231683
 Systems and methods for controlling multistage electronic controlled gas valves patent thumbnailSystems and methods for controlling multistage electronic controlled gas valves
Disclosed herein are exemplary embodiments of an electronic control unit for controlling an electronic controlled multistage gas valve (mgv) for adjusting gas flow to a gas fired appliance. In an exemplary embodiment, an electronic control unit generally includes an integrated furnace control (ifc) unit, a multistage gas valve control (mgvc) unit electronically coupled to the ifc unit, and a coil electronically coupled to the mgvc unit.
08/21/14
20140231643
 Discontinuous atmospheric pressure interface patent thumbnailDiscontinuous atmospheric pressure interface
A method of interfacing atmospheric pressure ion sources, including electrospray and desorption electrospray ionization sources, to mass spectrometers, for example miniature mass spectrometers, in which the ionized sample is discontinuously introduced into the mass spectrometer. Discontinuous introduction improves the match between the pumping capacity of the instrument and the volume of atmospheric pressure gas that contains the ionized sample.
08/14/14
20140225955
 Control of air-based media dryer patent thumbnailControl of air-based media dryer
Examples are provided of controlling sheet media dryers. A controller operates a fan at plural duty cycles and correlates a resulting air pressure to each to define empirical data pairs.
08/14/14
20140225659
Thermal controller
A thermal controller for driving a gate control unit of a gate-driven semiconductor switching device, the thermal controller comprising a junction temperature estimation module for generating an estimated junction temperature for the switching device, a gate voltage control module for modifying a gate voltage of the switching device, a switching frequency control module for modifying a switching frequency of the switching device, and a duty cycle control module for modifying the duty cycle of the switching device. In use, the thermal controller is adapted to activate one of the gate voltage control module, switching frequency control module and duty cycle control module dependent upon the estimated junction temperature in order to maintain the actual junction temperature below a pre-determined limit..
08/14/14
20140225501
Adjusted pulse width modulated duty cycle of an independent filament drive for a gas discharge lamp ballast
An electronic dimming ballast for driving a gas discharge lamp may be operable to control the duty cycle of an independent filament drive (ifd) to avoid hard switching and operation of the switches of the ifd outside their safe operating area. Such a ballast may include a first inverter for generating a first high-frequency alternating current (ac) voltage for powering the gas discharge lamp, and a second inverter for generating a second high-frequency ac voltage for heating the filament, wherein the second inverter is driven independent of the first inverter.
08/14/14
20140223688
Battery-powered cordless cleaning system
A cleaning system comprising a rotor; an agitator; a rechargeable battery having a housing and at least two cells within the housing; a suction motor receiving power from the rechargeable battery, the suction motor coupled to the rotor; a brush motor receiving power from the rechargeable battery, the brush motor coupled to the agitator; a user-controlled switch configured to generate a user-activated signal in response to user manipulation; and a controller. The controller configured to output a first pulse-width modulated signal at a first duty cycle to control the suction motor, output a second pulse-width modulated signal at a second duty cycle to control the brush motor at a first speed, receive the user-activated signal, and upon receiving the user-activated signal, output the second pulse-width modulated signal at a third duty cycle to control the brush motor at a second speed..
08/07/14
20140222113
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.
08/07/14
20140221029
Methods and apparatus for wireless coexistence based on transceiver chain emphasis
Methods and apparatus for reduction of interference between a plurality of wireless interfaces. In one exemplary embodiment, a device having a first (e.g., wi-fi) interface and a second (e.g., bluetooth) interface monitors interference between its interfaces.
08/07/14
20140219663
Methods and arrangements for frequency shift communications
Embodiments relate to communicating data by varying a frequency of an amplitude modulated light source. Embodiments may comprise logic such as hardware and/or code to vary a frequency of an amplitude-modulated electromagnetic radiator such as a visible light source, an infrared light source, or an ultraviolet light source.
08/07/14
20140219401
Rfi mitigation via duty cycle control
Briefly, in accordance with one or more embodiments, a harmonic of a clock signal is determined that is expected to provide interference with an input of a radio-frequency (rf) receiver based at least in part on a frequency of the clock signal and one or more frequencies of operation of the rf receiver. A duty cycle of the clock signal at which the harmonic will be attenuated is calculated, and the duty cycle of the clock signal is set to the calculated value as a base duty cycle in order to mitigate rf interference (rfi) at the rf receiver due to the harmonic of the clock signal.
08/07/14
20140218742
Optical coherence tomography control systems and methods
In part, the invention relates to methods, devices, and systems suitable for controlling a light source. The light source is configured for use in a data collection system such as an optical coherence tomography system.
08/07/14
20140218088
Apparatus, system, and method for 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..
08/07/14
20140217999
Soft start circuits and techniques
A regulator control circuit includes a switch control signal generator to generate a switch control signal and a soft start circuit to generate a soft start signal for use by the switch control signal generator. The soft start circuit includes a soft start controller and a decreasing circuit to decrease the soft start signal in response to the soft start controller.
07/31/14
20140214144
Electrode configuration for an implantable electroacupuncture device
An implantable electroacupuncture device (iead) treats a disease or medical condition of a patient through application of stimulation pulses applied at a specified acupoint or other target tissue location at a very low duty cycle. In a preferred implementation, the iead is an implantable, coin-sized, self-contained, leadless device having at least two electrodes attached to an outside surface of its housing, with at least one electrode on the top or bottom surface of the housing functioning as a cathode, and at least one electrode on the perimeter edge of the housing functioning as an anode.
07/31/14
20140214133
Radial feed through packaging for an implantable electroacupuncture device
An implantable electroacupuncture device (iead) treats a disease or medical condition of a patient through application of stimulation pulses applied at a specified acupoint or other target tissue location. In a preferred implementation, the iead is an implantable, coin-sized, self-contained, leadless electroacupuncture device having at least two electrodes attached to an outside surface of its housing.
07/31/14
20140214128
Circuits and methods for using a high impedance, thin, coin-cell type battery in an implantable electroacupuncture device
An implantable electroacupuncture device (iead) treats a disease or medical condition of a patient through application of stimulation pulses applied at a specified acupoint or other target tissue location. In a preferred implementation, the iead is an implantable, coin-sized, self-contained, leadless electroacupuncture device having at least two electrodes attached to an outside surface of its housing.
07/31/14
20140214127
Implantable electroacupuncture device and method for treating dyslipidemia
An implantable electroacupuncture device (iead) treats dyslipidemia conditions of a patient through application of stimulation pulses applied at acupoint st40, or its underlying nerves saphenous and peroneal. The iead comprises an implantable, coin-sized, self-contained, leadless electroacupuncture device having at least two electrodes attached to an outside surface of its housing.
07/31/14
20140214126
Implantable electroacupuncture device and method for treating obesity
An implantable electroacupuncture device (iead) treats obese conditions of a patient through application of stimulation pulses applied at acupoints sp4, lr8 or st40, or their underlying nerves saphenous and peroneal. The iead comprises an implantable, coin-sized, self-contained, leadless electroacupuncture device having at least two electrodes attached to an outside surface of its housing.
07/31/14
20140214125
Implantable electroacupuncture system and method for treating dyslipidemia and obesity
An implantable electroacupuncture system (ieas) treats dyslipidemia or obesity through application of stimulation pulses applied at at least one of acupoints st36, sp4, st37, st40, sp6, sp9, k16, or lr8, or underlying nerves saphenous or peroneal. The ieas includes an hermetically-sealed implantable electroacupuncture (ea) device having at least two electrodes located outside of its housing.
07/31/14
20140214124
Implantable electroacupuncture system and method for treating cardiovascular disease
An implantable electroacupuncture device (iead) treats cardiovascular disease through application of stimulation pulses applied at at least one of acupoints ex-hn1, bl14, ht7, ht5, pc6, st36, li11, lu7 and lu2. The iead comprises an implantable, coin-sized, self-contained, leadless electroacupuncture device having at least two electrodes attached to an outside surface of its housing.
07/31/14
20140214119
Implantable electroacupuncture system and method for treating parkinson's disease and essential tremor
An implantable electroacupuncture device (iead) treats parkinson's disease or essential tremor through application of stimulation pulses applied at at least one of acupoints gb34 and gv20. The iead includes an hermetically-sealed implantable electroacupuncture (ea) device having at least two electrodes located outside of its housing.
07/31/14
20140214118
Implantable electroacupuncture system and method for treating depression and similar mental conditions
An implantable electroacupuncture device (iead) treats mental illness through application of stimulation pulses applied at a specified tissue location, including at least one of acupoints gv20 and exhn3, or their underlying nerves. In one embodiment, the iead comprises an implantable, coin-sized, self-contained, leadless electroacupuncture device having at least two electrodes attached to an outside surface of its housing.
07/31/14
20140214117
Implantable electroacupuncture device and method for treating depression, bipolar disorder and anxiety
An implantable electroacupuncture device (iead) treats depression, bipolar disorder or anxiety through application of stimulation pulses applied at acupoints gv20 and/or exhn3. The iead comprises an implantable, coin-sized, self-contained, leadless electroacupuncture device having at least two electrodes attached to an outside surface of its housing.
07/31/14
20140214116
Stimulation paradigm to improve blood pressure dipping in an implantable electroacupuncture device
A coin-sized implantable electroacupuncture (ea) device defines a stimulation paradigm, or stimulation regimen, that controls when ea stimulation pulses are applied to a selected acupoint, or other specified tissue location, to treat hypertension or nondipping. The stimulation regimen is applied when the patient is sleeping in order to minimize or mitigate the occurrence of nondipping or reverse dipping of the patient's blood pressure.
07/31/14
20140214115
Implantable electroacupuncture system and method for reducing hypertension
An implantable electroacupuncture device (iead) treats hypertension through application of stimulation pulses applied at at least one of acupoints pc5, pc6, li4, st36, st37, li11, lr3, and gb34. The iead comprises an implantable, coin-sized, self-contained, leadless electroacupuncture device having at least two electrodes attached to an outside surface of its housing.
07/31/14
20140214114
Implantable electroacupuncture device and method for reducing hypertension
An implantable electroacupuncture device (iead) treats hypertension through application of stimulation pulses applied at at least one of acupoints pc5, pc6, st36, or st37. The iead comprises an implantable, coin-sized, self-contained, leadless electroacupuncture device having at least two electrodes attached to an outside surface of its housing.
07/31/14
20140214113
Implantable electroacupuncture device
An implantable electroacupuncture device (iead) treats a medical condition of a patient through application of electroacupuncture (ea) stimulation pulses applied at a target tissue location, such as an acupoint. The iead comprises an implantable, coin-sized, self-contained, leadless electroacupuncture device having at least two electrodes attached to an outside surface of its housing.
07/31/14
20140214112
Implantable electroacupuncture device and method for treating erectile dysfunction
An implantable electroacupuncture device (iead) treats an erectile dysfunction condition of a patient through application of stimulation pulses applied at a target tissue location underlying, or in the vicinity of, at least one of acupoints bl52, bl23 or gv4. The iead comprises an implantable, coin-sized, self-contained, leadless electroacupuncture device having at least two electrodes attached to an outside surface of its housing.
07/31/14
20140214111
Implantable electroacupuncture device and method for treating cardiovascular disease
An implantable electroacupuncture device (iead) treats heart failure, coronary artery disease, myocardial ischemia or angina through application of stimulation pulses applied at acupoints gv20 and/or exhn3. The iead comprises an implantable, coin-sized, self-contained, leadless electroacupuncture device having at least two electrodes attached to an outside surface of its housing.
07/31/14
20140210374
Lighting system and method for pwm duty cycle control
A lighting system and method are provided for controlling a pwm duty cycle. The lighting system is provided with at least one device that is configured to emit light in response to receiving electrical power.
07/31/14
20140210371
Digitally controlled electronic ballast with anti-striation control and method of operation thereof
An apparatus to supply power to at least one gas lamp, the apparatus including a half bridge driver having a striation control circuit which determines an on time (ton) for a cycle in accordance with a fifty percent duty cycle, the cycle having a plurality of segments and lasting for a predetermined period of time and modulates on times ton1 and ton2 of first and second power switches, respectively, of a half-bridge circuit in accordance with a striation control technique for each of the plurality of segments.. .
07/31/14
20140210359
Method and apparatus to control a dc-dc converter
Control circuits and techniques are provided for use with dc-dc converters. The circuits and techniques may, in some implementations, be used with led driver systems.
07/24/14
20140204837
Methods and arrangements for channel access in wireless networks
Some embodiments provide a normal rate preamble detector to detect a signal transmitted in accordance with a first set of modulation and coding schemes and a low rate preamble detector to detect a signal transmitted in accordance with a second set of modulation and coding schemes. Embodiments may comprise channel traffic logic to determine a traffic indicator indicative of traffic on a communications channel.
07/24/14
20140203871
Zero-voltage-switching contour based outphasing power amplifier
A zero-voltage-switching contour based outphasing power amplifier having two class-e power amplifiers connected in an out-phasing architecture coupled on opposite sides of a load being driven. The pair of class-e power amplifiers receive separate digital drive signals with an amount of phase difference that is adjusted based on the load.
07/24/14
20140203851
Digital clock placement engine apparatus and method with duty cycle correction and quadrature placement
A digital clock placement engine has circuitry that adjusts a duty cycle of a clock signal and adjusts the locations of the rising/falling edges of the clock signal for purposes of data sampling or other operations. In a forwarded-clock interface implementation, a clock signal is received along with a data signal, and the received clock signal may be distorted to due various factors.
07/24/14
20140203777
Electric vehicle supply equipment with temperature controlled current
In electric vehicle supply equipment (evse), interruption of charging due to overheating is prevented by adjusting the pulse duty cycle on the control pilot conductor communicating the maximum allowed current level to the electric vehicle, the adjustment being performed whenever the evse temperature exceeds a predetermined threshold temperature below the maximum operating temperature as a function of the approach of the temperature to the maximum operating temperature.. .
07/24/14
20140203769
Method of multi-coil operation and optimization
This disclosure provides systems, methods and apparatus for wireless power transfer and particularly wireless power transfer to remote systems such as electric vehicles. In one aspect, a system comprises substantially co-planar first and second receiver coils.
07/24/14
20140203743
Drive apparatus and drive method for brushless motor
The present invention relates to a drive apparatus that drives a brushless motor with a square wave, and relates to a drive method thereof. The drive apparatus limits a duty cycle of once in n times of pulse width modulation periods so that the duty cycle does not fall below a set value, and increases the n value according to a rotation speed of the brushless motor, and then obtains position information in a period in which the duty cycle is limited to the predetermined duty cycle.
07/24/14
20140203712
Occupancy sensor for controlling an led light
An occupancy sensor for an led module has an occupancy sensing module, a main control module and a current control module. The occupancy sensing module has capability of sensing occupancy status of a specific area.
07/17/14
20140200631
Efficient external charger for charging a plurality of implantable medical devices
An external charger for a battery in an implantable medical device (implant), and technique for charging batteries in multiple implants using such improved external charger, is disclosed. During charging, values for a parameter measured in the implants are reported from the implants to the external charger.
07/17/14
20140200616
System for stimulating bone growth, tissue healing and/or pain control, and method of use
A system for use in stimulating bone growth, tissue healing, and/or pain control is described. The system includes a screw, a battery, a controller, and means for connecting the battery such that current is routed from the battery through the screw and thence to a target area of interest requiring treatment.
07/17/14
20140197854
Resistance determination for temperature control of heated automotive components
Electrical resistance of a heated component is determined for temperature control and monitoring. A voltage-representation signal, which is proportional to a voltage across a heater component, is received.
07/17/14
20140197812
Constant on time control circuit and dc-dc converting circuit
A constant on time control circuit, configured to control a converting circuit to transform an input voltage into a stable output voltage, is disclosed. The constant on time control circuit comprises a comparing circuit and a logic circuit.
07/17/14
20140197810
Multi-phase dc-dc converter and controlling method thereof
A multi-phase dc-dc converter and a controlling method thereof are provided. The multi-phase dc-dc converter includes a plurality of output units, a sensing unit, and a pulse width modulation (pwm) controller.
07/17/14
20140197754
Lighting control system and method
A lighting system provides for control of the perceived color of the light emitted by the light fixture. The light fixture has two light sources, a control circuit pulses the two light sources and changes relative duty cycles of the light sources to alter a perceived color output of the lighting fixture, in response to a control signal.
07/17/14
20140197736
Filament detection circuit
A ballast including a driver circuit, a filament heating circuit, a current detector circuit, and a control circuit is provided. The driver circuit generates an oscillating current signal.
07/17/14
20140197160
Systems and methods for protecting switching elements in an induction heating system
The present disclosure provides systems and methods for protecting switching elements in an induction heating system. A switching power loss associated with a switching element of the induction heating system can be calculated and an operating frequency of the induction heating system can be adjusted based upon the switching power loss.
07/10/14
20140194076
Systems and methods for minimizing spurs through duty cycle adjustment
A frequency source, such as for a wireless communications device, configured to have a duty cycle adjustment. A selected harmonic spur resulting from operation of the frequency source at one duty cycle may be avoided or minimized by operating the frequency source at a second duty cycle.
07/10/14
20140193558
Milk emulsifying method and unit
A milk emulsifying method and unit, whereby a first flow of milk, fed along a first feed line (7) to an emulsifying chamber (5), draws a second flow of air from the outside along a second feed line (8) converging with the first feed line (7) upstream from the emulsifying chamber (5); the second flow being subjected to a repeat chopping operation, in which chopping is regulated in both frequency and duty cycle.. .
07/10/14
20140192567
Methods for controlling electrical inverters and electrical inverters and systems using the same
A system for generating a duty cycle control signal for controlling an inverter power train providing an output current waveform to a grid operating with a grid voltage waveform compares a reference current waveform shaped to the grid voltage waveform with the output current waveform to generate an error signal. The error signal is used to generate a corrective control action signal, which is combined with a feed-forward signal representing a nominal duty cycle generated with a feed-forward function.
07/10/14
20140192560
Duty cycle balance module for switch mode power converter
A duty cycle balance module (dcbm) for use with a switch mode power converter. One possible half-bridge converter embodiment includes a transformer driven to conduct current in first and second directions by first and second signals during and second half-cycles, respectively.
07/10/14
20140191735
Digital duty cycle controller for a switching mode power supply
Disclosed are methods, devices, and systems to digitally control a duty cycle of a switching mode power supply. In one embodiment, a method comprises calculating a base duty cycle using a power management unit of a high-speed processing unit, calculating a dynamic offset duty cycle using the power management unit to apply a transfer function to a sampled feedback voltage signal, and adding the base duty cycle to the dynamic offset duty cycle to obtain a duty cycle of the switching mode power supply.
07/10/14
20140191681
Circuitry for current regulated, externally controlled led driving
A current driver circuit for regulating a light emitting diode (led) is disclosed. An example driver circuit uses one input node of the driver circuit for controlling both maximum brightness and dimming of an led coupled to an output node of the driver circuit.
07/10/14
20140191679
Dimming circuit and lighting device using the same
A dimming circuit and a lighting device using the same are provided. The dimming circuit comprises an interface trigger unit, an average duty cycle calculating unit, a control voltage calculating unit and a comparing unit.
07/10/14
20140191073
Seat belt apparatus
A seat belt apparatus includes a reel, a motor, a clutch member, a belt reacher, a door opening/closing detection section, a wearing detection section and a motor control section. Once a change from an opened state to a closed state of a vehicle door is detected by the opening/closing detection section, the control section controls the motor so that the webbing is pulled out from the reel at a predetermined speed.
07/10/14
20140189959
Method, system, and device for adjusting operation of washing machine based on system modeling
Devices and methods to adjust the operation of a washing machine based on system modeling include a motor, a control board, a heater, a number of sensors, and an electronic controller. The controller receives a selected wash cycle program and determines an operating condition of the selected wash cycle program, using data from the sensors.
07/03/14
20140189398
Techniques for platform duty cycling
Various embodiments are generally directed to an apparatus, method and other techniques for detecting active and semi-active workloads during execution on a platform processing device and enabling a duty cycle process to reduce thermal output and power consumption, and align unaligned activity. In various embodiments, the duty cycle processing may be enabled during an active workload when thermal output or power consumption is above a thermal threshold or power consumption threshold that is below an efficient operating point for the platform processing device.
07/03/14
20140188424
Fan test device
A fan test device is connected to an interface of a fan under test on a motherboard. The fan test device includes a connector, a power test unit, a signal test unit, a single chip microcontroller (scm), and a keyboard.
07/03/14
20140185346
Hybrid power devices and switching circuits for high power load sourcing applications
A hybrid switching circuit includes first and second switching devices containing first and second unequal bandgap semiconductor materials. These switching devices, which support parallel conduction in response to first and second control signals, are three or more terminal switching devices of different type.
07/03/14
20140185004
Adjustable spectral transmittance eyewear
Embodiments of the present invention relate to eyewear having an electrically switchable spectral transmittance lens(es). The eyewear includes a lens driver that controls the variable spectral transmittance lens(es).
07/03/14
20140184294
Duty cycle correction circuit and operation method thereof
A duty cycle correction circuit includes a clock adjustment unit configured to adjust a duty ratio of an input clock signal in response to a duty control signal and generate an output clock signal, a tracking type setting unit configured to generate an tracking type selection signal for setting a first or second tracking type based on a duty locking state of the output clock signal, and a control signal generation unit configured to generate the duty control signal, into which the first or second tracking type is incorporated, in response to the tracking type selection signal and the output clock signal.. .
07/03/14
20140184292
Duty cycle detection and correction circuit in an integrated circuit
A duty cycle detection and correction circuit includes a clock generator, a clock tree, and a duty cycle correction circuit. The clock generator is configured to generate a first clock signal and a second clock signal, and the first clock signal and the second clock signal have a predetermined phase difference.
07/03/14
20140184180
Phase lock loop controlled current mode buck converter
A current mode buck converter has a power stage and a feedback stage. The power stage converts a higher power supply voltage level to a lower output voltage level.
07/03/14
20140184124
Computing device and method for protecting fan of computing device
In a method for protecting a fan of a computing device, firstly, a current supplied to the fan is read. Secondly, if the current supplied to the fan is more than or equal to a predefined current, a baseboard management controller(bmc) is controlled to send a pulse width modulation (pwm) signal to decrease a duty cycle of the fan by a predefined proportion, so that the current supplied to the fan is decreased.


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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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