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Pulse Width Modulation

Pulse Width Modulation-related patent applications - as published by the U.S. Patent and Trademark Office (USPTO).


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NEW Three-phase ac/dc converter, photochemical reaction device and method using same, and method for producing ...
Toray Industries, Inc.
August 17, 2017 - N°20170238381

Provided are a three-phase ac/dc converter disposed between a three-phase ac power supply and a light emitting diode group, the converter including a three-phase full bridge circuit in which pairs of switching elements are connected in parallel between dc buses for the three phases of the three-phase ac power supply; reactors connecting connection portions between the switching elements and ...
NEW System and method for modulation and demodulation
Pr Electronics A/s
August 17, 2017 - N°20170237420

The present invention relates to a system and a method for pulse width modulation and demodulation of a continuous input signal, which system is configured to receive a continuous input to an analog modulator, which system comprises a demodulator generating a continuous output signal. It is the object of the pending patent application to use an analog modulator for transmitting ...
NEW Motor controller, motor control method, and non-transitory computer-readable medium encoded with motor control program
Fanuc Corporation
August 17, 2017 - N°20170237384

A motor controller, a motor control method, and a motor control program are provided, all of which are capable of appropriately suppressing temperature elevation in a motor, while protecting an amplifier. A motor controller for driving a motor by way of pulse width modulation includes: a temperature acquisition unit that acquires a temperature of a motor; a limiting value determination ...
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NEW Gas detection apparatus
Ngk Spark Plug Co., Ltd.
August 17, 2017 - N°20170234831

A multi-gas detection apparatus is configured such that electric power supplied from a power supply to a heater is controlled by pulse width modulation so as to control the temperature of a first solid electrolyte body. The multi-gas detection apparatus detects the concentration of ammonia by using a first ammonia detection section in which an electromotive force is generated between ...
Systems and methods for controlling multi-level diode-clamped inverters using space vector pulse width modulation (svpwm)
Inertech Ip Llc
August 10, 2017 - N°20170229977

Control systems for a multi-level diode-clamped inverter and corresponding methods include a processor and a digital logic circuit forming a hybrid controller. The processor identifies sector and region locations based on a sampled reference voltage vector v* and angle θe*. The processor then selects predefined switching sequences and pre-calculated turn-on time values based on the identified sector and ...
Inertial sensors
Atlantic Inertial Systems, Limited
August 10, 2017 - N°20170227572

An inertial sensor includes a substantially planar, rotationally symmetric proof mass, a capacitive pick-off circuit connected to the proof mass, an electrical drive circuit connected to the four pairs of electrodes. The drive circuit is arranged to apply first in-phase and anti-phase pulse width modulation (pwm) drive signals with a first frequency to the first and third electrode pairs, such ...
Pulse Width Modulation Patent Pack
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Pulse Width Modulation Patent Applications
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  • 123+ full patent PDF documents of Pulse Width Modulation-related inventions.
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Magnetic coil driving circuit for magnetic contactor
Lsis Co., Ltd.
August 03, 2017 - N°20170222428

The magnetic coil driving circuit of the magnetic contactor according to the present invention comprises a semiconductor switch configured to open or close a circuit for magnetizing or demagnetizing a magnetic coil; a pulse width modulation unit configured to output a pulse signal as a control signal for turning on or off the semiconductor switch; a control unit configured to ...
Isolated power conversion system
Inno-tech Co., Ltd.
July 27, 2017 - N°20170214322

Disclosed is an isolated power conversion system for providing a function of isolated power conversion by converting an ac power into a dc output power, and a rectifying unit, a transformer, a switching transistor, a first pulse width modulation (pwm) controller, a second pwm controller, an output unit and a signal blocking unit are included. The signal blocking unit is ...
Frequency hopping for reducing switching power converter noise
Dialog Semiconductor Inc.
July 27, 2017 - N°20170214320

A switching power converter is configured to control switching noise by implementing a plurality of pulse width modulation modes of operation. The peak current in each pulse width modulation mode of operation is controlled so that an output power for the switching power converter is continuous with regard to transitions between the pulse width modulation modes.
Smart automobile door handle light
Dialog Semiconductor Inc.
July 20, 2017 - N°20170203687

A smart automobile door handle light includes a light emitting door handle assembly, a smart central processing unit (cpu), a vehicle condition sensing unit, a mode storage unit and a pulse width modulation (pwm) unit. The light emitting door handle assembly includes a door handle body and a light emitting module provided at the door handle body. The vehicle condition ...
Three-level photovoltaic inverter pulse width modulation method and modulator
Sungrow Power Supply Co., Ltd.
July 13, 2017 - N°20170201189

A three-level photovoltaic inverter pulse width modulation method and a three-level photovoltaic inverter pulse width modulator. The method includes: when it is detected that potential safety hazards exist in a three-level photovoltaic inverter, switching the pulse width modulation mode of the three-level photovoltaic inverter into a 13-vector space vector pulse width modulation mode, to solve the fault or abnormal problems ...
Lighting device with color temperature gradation and method of using the same
Artika For Living Inc.
July 06, 2017 - N°20170196058

A lighting device with color temperature gradation is disclosed. The lighting device has a first white light emitting diode (led) source with a first color temperature and a second white led source with a second color temperature. The lighting device further comprises a controller adapted to generate a pulse width modulation (pwm) signal and to supply the first white led ...
High temperature protection system for adjusting duty cycle by using pulse width modulation signal
Prolific Technology Inc.
July 06, 2017 - N°20170194785

High temperature protection system includes a thermal detection and control circuit, a pulse width modulation signal output circuit, a driving circuit, and a coil module. The thermal detection and control circuit is used for detecting a temperature and outputting at least one corresponding control signal. The pulse width modulation signal output circuit is coupled to the thermal detection and control ...
Pulse Width Modulation Patent Pack
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Pulse Width Modulation Patent Applications
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inventor
  • 123+ full patent PDF documents of Pulse Width Modulation-related inventions.
  • Exact USPTO filing data with full-text, images, drawings & claims.
  • Index pages: Table View and Image-Grid View layouts. All images in each PDF.
Apparatus and method for controlling electric currents
Lg Chem, Ltd.
June 29, 2017 - N°20170187232

Disclosed are an apparatus and a method for controlling electric currents. The apparatus for controlling electric currents according to the present invention includes: a pulse width modulation (pwm) signal generating unit configured to generate a pwm signal; a first switch unit connected with the pwm signal generating unit, and configured to receive the pwm signal and generate a switch control ...
Distributed pulse width modulation control
X-celeprint Limited
June 29, 2017 - N°20170186356

A distributed pulse-width modulation system includes an array of pulse-width modulation elements, each element including a digital memory for storing a multi-bit digital value and a drive circuit that drives an output device in response to the multi-bit digital value stored in the digital memory. A system controller includes a memory for storing a multi-bit digital value for each element ...
Dithering and dimming techniques for light emitting diode (led) lighting systems
Lumenetix, Inc.
June 22, 2017 - N°20170181238

Various embodiments are described herein that relate to systems and methods for selectively providing current to power leds. The techniques introduced here can enable smooth dimming of the leds from maximum brightness down to “actual extinction” or “pseudo-extinction.” more specifically, the leds can be dimmed to extinction without any significant gaps in ...
Led headlamp with daytime running lamp
Lumenetix, Inc.
June 22, 2017 - N°20170174120

Improved light emitting diode (led) vehicle headlamps having a dedicated daytime running lamp (drl) component are described. In various embodiments, a combination low beam/drl headlamp is provided, which uses pulse width modulation (pwm) detection to determine which of the two internal led light sources (low beam or drl) is powered on. If the low beam/drl headlamp detects a ...
Method and apparatus for pulse width modulation
Tempo Semiconductor, Inc.
June 15, 2017 - N°20170170816

A ternary pulse width modulation (“pwm”) method and apparatus. In one embodiment, the start of the pulse sequence in the “current” frame is referenced to the end of the pulse sequence in a previous, “reference” frame, rather than to the frame boundary at the start of the current ...
Power factor correction conversion device and control method thereof
National Chung Shan Institute Of Science And Technology
June 15, 2017 - N°20170170745

A power factor correction conversion device and control method thereof are adapted to send an ac signal to a power factor correction conversion device, convert the ac signal into a dc signal, and perform power factor correction of the dc signal, so as to change a power factor sent to a back-end load, wherein the control method includes a rectification ...
Regenerative variable frequency drive with auxiliary power supply
Phase Technologies, Llc
June 15, 2017 - N°20170170743

A regenerative variable frequency drive includes an active converter connected to a dc bus that is connected to a first inverter that converts dc power to variable frequency, three phase ac power, and variable frequency, three phase ac power to dc power, and to a second inverter that converts dc power to three phase ac sine wave power. The converter ...
Boost dc-dc converter having digital control and reference pwm generators
Phase Technologies, Llc
June 15, 2017 - N°20170170728

A boost dc-dc converter operating in pulse frequency modulation (pfm) and pulse width modulation (pwm) modes includes a plurality of pwm signal generators. The pwm signal generators generate pwm signals with different duty cycles. Pwm signals with larger duty cycles may be selected for use in undervoltage situations.
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