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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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Atomic oscillator, electronic apparatus, moving object, and manufacturing method of atomic oscillator
Seiko Epson Corporation
October 26, 2017 - N°20170310332

An atomic oscillator includes a gas cell, a semiconductor laser, and a frequency modulation signal generation section (such as a frequency transform circuit) which generates a frequency modulation signal for causing the semiconductor laser to generate frequency-modulated light including a resonance light pair (first-order sideband light pair) that causes an electromagnetically induced transparency phenomenon in metal atoms. When a modulation ...
Dc-dc voltage converter and associated control method
Seiko Epson Corporation
October 19, 2017 - N°20170302166

A dc-dc voltage converter and associated control method capable of dynamically adjusting upper boundary of the inductor current are provided. The dc-dc voltage converter is electrically connected to an input terminal having an input voltage and an output terminal having an output voltage. The dc-dc voltage converter converts the input voltage to the output voltage, and the dc-dc voltage converter ...
Low power high frequency digital pulse frequency modulator
Seiko Epson Corporation
October 19, 2017 - N°20170301309

Described is an apparatus that comprises: a programmable delay line (pdl) to receive a pulse-width modulation (pwm) signal as input and to generate a first output; a selection unit operable to provide pwm signal or its inverted version as a second output; and a sequential unit coupled to the pdl, the sequential unit to sample the second output with the ...
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Removing impulsive noise in a radio
Silicon Laboratories Inc.
October 05, 2017 - N°20170288712

In one example, an apparatus includes: a delay unit to delay a demodulated signal obtained from an input radio frequency (rf) frequency modulation (fm) signal; a filter to filter the demodulated signal and output a filtered demodulated signal; an impulse detection circuit to receive the filtered demodulated signal and detect presence of an impulse in the demodulated signal; and an ...
Frequency modulation based voltage controller configuration
Skyworks Solutions, Inc.
September 28, 2017 - N°20170279350

A voltage converter can be switched among two or more modes to produce an output voltage tracking a reference voltage that can be of an intermediate level between discrete levels corresponding to the modes. One or more voltages generated from a power supply voltage, such as a battery voltage, can be compared with the reference voltage to determine whether to ...
Scanning probe microscope and measurement method using the same
Kabushiki Kaisha Toshiba
September 21, 2017 - N°20170269123

A scanning probe microscope that includes a probe, a positioning unit configured to position a probe on a measurement sample, an excitation unit configured to excite the measurement sample at a predetermined frequency, a resonance unit configured to output a frequency modulation signal by converting a change of a capacitance of the measurement sample, a lock-in amplifier configured to output ...
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Fast mode transitions in a power converter
Texas Instruments Incorporated
August 31, 2017 - N°20170250608

Disclosed embodiments of a power converter include a power output stage for generating a first voltage output and an auxiliary power output stage for generating a second voltage output. The power converter further includes a pulse frequency modulation (pfm) controller for controlling the power output stage in response to the first voltage output generated by the power output stage during ...
Devices for controlling high frequency spinal cord modulation for inhibiting pain, and associated systems and ...
Nevro Corp.
August 24, 2017 - N°20170239478

Selective high-frequency spinal chord modulation for inhibiting pain with reduced side affects and associated systems and methods are disclosed. In particular embodiments, high-frequency modulation in the range of from about 1. 5 khz to about 50 khz may be applied to the patient's spinal chord region to address low back pain without creating unwanted sensory and/or motor side affects. In other embodiments, ...
Signal processing apparatus and method
Nevro Corp.
August 17, 2017 - N°20170237588

In an aspect of the present technology, control data, which is for controlling frequency modulation to a carrier signal using digital data to be transmitted, and for suppressing a time average of a fluctuation amount of a frequency modulation amount more than a case of controlling the frequency modulation to the carrier signal using the digital data is generated, the ...
Trim for dual-port frequency modulation
Sunrise Micro Devices, Inc.
August 03, 2017 - N°20170222794

Various methods provide for trimming the gain in a dual-port phase-locked loop (pll) of a radio transceiver. Use is made of the radio's demodulator to perform modulation accuracy measurements, thereby reducing the cost and complexity of external test equipment.
Golf club heads with frequency modulation devices and related methods
Karsten Manufacturing Corporation
August 03, 2017 - N°20170216688

Embodiments of golf club heads with frequency modulation devices are presented herein. Other examples and related methods are also disclosed herein.
Magnetic motorcycle stereo
Karsten Manufacturing Corporation
July 13, 2017 - N°20170201816

A portable package for mounting a stereo entertainment system to a motorcycle. The portable package comprises a cover cenclosing a housing of a device comprising a fm (frequency modulation) receiver, a usb (universal serial bus) port configured to receive a radio plugin, an audio input, and a sd (secure digital) port operatively assembled in the housing. A plurality of speakers ...
Spectral analysis using a spatial light modulator
Viavi Solutions Inc.
July 13, 2017 - N°20170201326

According to an example, an optical transmission device may include a spatial light modulator having a plurality of cells, in which different wavelengths of a light beam are to impinge upon different groups of pixels along a dispersion direction. The device may also include a driver mechanism to modulate, at a first frequency, a first group of the plurality of ...
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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 ...
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 ...
Boost dc-dc converter having digital control and reference pwm generators
Hyundai Motor Company
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.
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 ...
Systems and methods for frequency modulation of radiofrequency power supply for controlling plasma instability
Lam Research Corporation
May 18, 2017 - N°20170141002

A wafer is positioned on a wafer support apparatus beneath an electrode such that a plasma generation region exists between the wafer and the electrode. Radiofrequency signals of a first signal frequency are supplied to the plasma generation region to generate a plasma within the plasma generation region. Formation of a plasma instability is detected within the plasma based on ...
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