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Frequency Modulation

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


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NEW Led driving circuit, led device comprising the same, and driving method of led
Fairchild Korea Semiconductor Ltd.
June 22, 2017 - N°20170181236

A light emitting diode (led) driving circuit disclosed herein controls a switching operation of a power switch connected to an led string and includes a reference voltage generator configured to generate a frequency modulation reference voltage according to a dimming signal that controls brightness of the led string, and a switching controller configured to control a switching frequency of the ...
NEW Dynamic workload frequency optimization
International Business Machines Corporation
June 22, 2017 - N°20170177064

The embodiments described herein relate to dynamically detecting a frequency change condition for microprocessor performance. An instruction is received, and a frequency change condition associated with the received instruction is dynamically detected. A frequency modulation is performed in response to the dynamic detection. The frequency modulation includes selecting a second frequency for optimal instruction processing different from a first frequency, ...
Method of removing common mode noise, avn system using the method, and vehicle including the ...
Hyundai Motor Company
June 15, 2017 - N°20170171573

A method of removing common mode noise in a vehicle includes: a radio frequency (rf) switch connecting a feeder cable ground to a common mode (cm) filter or a digital signal processor (dsp) according to a selection signal of an amplitude modulation (am) broadcast or a frequency modulation (fm) broadcast selected by a user and the cm filter increasing impedance ...
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Radar system with optimized storage of temporary data
Conti Temic Microelectronic Gmbh
June 01, 2017 - N°20170153316

The invention relates to a radar system for use in driver assistance systems in motor vehicles. According to the invention, the radar system has optimized storage of temporary data when using periodic linear frequency modulation and a multidimensional discrete fourier transform.
Method, based on composite modulation, of data transmission between power electronic devices without communication line
Conti Temic Microelectronic Gmbh
May 25, 2017 - N°20170149473

A method of data transmission between power electronic devices without a communication line involves generation of a digital signal in a data transmission process. The digital signal enables pwm modulation of specific data information via a composite modulation method. The composite modulation superimposes pwm modulation waves after modulating the pwm carrier frequency or conducting high-frequency modulation on the data. The ...
Wireless radio-frequency transmission apparatus
Institute Of Semiconductors, Chinese Academy Of Sciences
May 18, 2017 - N°20170141780

The present disclosure discloses a wireless radio-frequency transmission apparatus, comprising: a phase frequency detector, a charge pump, a loop filter and a twin voltage-controlled oscillator, wherein the twin voltage-controlled oscillator comprises a first voltage-controlled oscillator and a second voltage-controlled oscillator which are of the same structure, wherein when the twin voltage-controlled oscillator is in a reception mode, the first voltage-controlled ...
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Frequency modulation scheme for fmcw radar
Infineon Technologies Ag
May 11, 2017 - N°20170131394

A method for a radar transmitter is described herein. In accordance with one exemplary embodiment, the method includes generating an rf transmit signal composed of at least one sequence of sub-sequent chirp pulses, wherein pseudo-randomly selected chirp pulses are blanked, and radiating the rf transmit signal via at least one antenna as radar signal.
Fam transmitting apparatus and method for combining fm signal and digital modulated am signal
Electronics And Telecommunications Research Institute
May 04, 2017 - N°20170126341

Disclosed is a frequency amplitude modulation (fam) transmission apparatus and method by combining a frequency modulation (fm) signal and a digital modulated amplitude modulation (am) signal. A fam transmission method includes receiving an fm signal created by modulating an audio signal that includes audio information for mono or stereo broadcasting based on an fm scheme; receiving a digital pulse created ...
Method and apparatus to evaluate audio equipment for dynamic distortions and or differential phase and ...
Electronics And Telecommunications Research Institute
April 27, 2017 - N°20170118569

A system is provided to analyze cross-modulation distortion in audio devices, which may include testing with audio frequencies. One or more distortion signals from the audio device may be measured for an amplitude, phase, and or frequency modulation effect. In another embodiment a musical signal may be used as a test signal. Providing additional test signals to the audio device ...
Efficient supercapacitor charging technique by a hysteretic charging scheme
The Regents Of The University Of California
April 27, 2017 - N°20170117730

An efficient supercapacitor charging scheme with low ambient energy sources is provided. In one embodiment, a charging apparatus is disclosed. The apparatus includes a burst control module, and a boost converter configured to control a two-stage supercapacitor composition. The boost converter may be a pulse-frequency modulation (pfm) dc-dc boost converter and the apparatus may include a charge-strapping supercapacitor to control ...
Dc-to-dc output current sensing
Dialog Semiconductor (uk) Limited
April 20, 2017 - N°20170110961

Method and circuits enable measuring output current in dc/dc converters operating in pulse frequency modulation (pfm) mode and in pulse width modulation (pwm) mode. The method is applicable to dc/dc converters using an inductor at the output. Current is sampled on one pass transistor only. The dc/dc converter disclosed turns a pmos transistor off when the output ...
Photon modulation management system
Xiant Technologies, Inc.
April 06, 2017 - N°20170094911

Embodiments described herein provide systems for optimizing organism growth, destruction or repair, by controlling the duty cycle, wavelength band and frequency of photon bursts to an organism, through the high frequency modulation of photons in an individual color spectrum to the organism, where the photon modulation is based upon the specific needs of the organism. Devices for the optimization of ...
Low-cost low-power lighting system and lamp assembly
Philips Lighting Holding B.v.
March 30, 2017 - N°20170094739

In accordance with embodiments of the present disclosure, a method and apparatus includes an input having a first input terminal and a second input terminal for receiving an input waveform. In one example, the apparatus includes a capacitor having a first capacitor terminal and a second capacitor terminal, wherein the first capacitor terminal is coupled to the first input terminal, ...
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High frequency light emission device
Brown University
March 23, 2017 - N°20170082873

Systems, apparatuses, and methods for modulating light at high frequencies by addressing the issue of direct modulation of long lifetime light emitters. Dynamic control of the local density of optical states (ldos) to exploit the differences between electric and magnetic dipole transitions allows for higher frequency modulation. The ldos is controlled, in part, by designing a structure such that it ...
Electromagnetic interference (emi) for pulse frequency modulation (pfm) mode of a switching regulator
Dialog Semiconductor (uk) Limited
March 09, 2017 - N°20170070145

A circuit and method providing switching regulation configured to provide a pulse frequency modulation (pfm) mode of operation with reduced electromagnetic interference (emi) comprising an output stage configured to provide switching comprising a first and second transistor, a sense circuit configured to provide output current information sensing from an output stage and a current limit reference, a first digital-to-analog converter (...
Apparatus and method to mitigate phase and frequency modulation due to inductive coupling
Dialog Semiconductor (uk) Limited
March 02, 2017 - N°20170063382

Described is an apparatus which comprises: a first clocking source having a first divider; a second clocking source having a second divider, wherein the first and second clocking sources are inductively coupled; and calibration logic to monitor clock signals associated with the first and second clocking sources and to generate at least one calibration code for adjusting at least one ...
Power supply circuitry and adaptive transient control
Infineon Technologies Americas Corp.
March 02, 2017 - N°20170063235

A control circuitry can be configured to receive an error signal indicating a difference between an output voltage of the power supply and a desired setpoint for the output voltage. According to one configuration, depending on the error signal, the control circuitry initiates switching between operating the control circuitry in a pulse width modulation mode and operating the control circuitry ...
Patient specific frequency modulation adaption
Med-el Elektromedizinische Geraete Gmbh
March 02, 2017 - N°20170056657

An input sound signal is processed to generate band pass signals that each represent an associated band of audio frequencies. Stimulation timing signals are generated for each band pass signal, including for one or more selected band pass signals using a timing function defined to determine a mapped instantaneous frequency by adjusting instantaneous frequency based on a frequency relation factor ...
Stabilized power supply utilizing resonance circuit driven by carrier modulated both in frequency and amplitude
Med-el Elektromedizinische Geraete Gmbh
February 16, 2017 - N°20170047847

Implementation of the priactical pwm controller provided with both the frequency modulation input and the amplitude modulation input is configured. The error voltage, which is the voltage difference between the output voltage and the reference voltage of the power supply, is fed back to both the frequency and the amplitude of the carrier. Integral of the error voltage is fed ...
Multi-channel neuromodulation system having frequency modulation stimulation
Boston Scientific Neuromodulation Corporation
February 09, 2017 - N°20170036030

A neuromodulation system comprises a plurality of electrical terminals configured for being respectively coupled to electrodes, modulation output circuitry configured for respectively outputting a plurality of individual electrical pulse trains in a plurality of timing channels to the electrical terminals, wherein each of the timing channels prevents the respective pulse train from having a specific characteristic, and control circuitry configured ...
Method of controlling electric motors, corresponding system, electric motor and computer program product
Stmicroelectronics S.r.l.
January 26, 2017 - N°20170025929

An electric motor is controlled by means of pulse-width modulated control signal having edge transitions occurring at certain transition count values of the pulses of a clock signal which is frequency-modulated with a step-wise frequency modulation (e. G., sscg or spread spectrum clock generation). A frequency unmodulated clock signal is provided having a fixed period indicative of the period of ...
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