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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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Spread spectrum clocking phase error cancellation for analog cdr/pll
Samsung Display Co., Ltd.
January 11, 2018 - N°20180013434

A system and method for correcting for phase errors, in a phase locked loop, resulting from spread spectrum clocking involving a reference clock signal having a frequency modulation. A correction generation circuit generates an offset signal, that when injected after the charge pump of the phase locked loop, causes the voltage controlled oscillator to produce a signal with substantially the ...
Modulated pulse charging
Gbatteries Energy Canada Inc.
January 11, 2018 - N°20180013306

Disclosed is pulse charging of a battery that uses frequency modulation to vary the pulse periods of the charging pulses. Battery measurements can be made to determine the duty cycles of the charging pulses.
Frequency modulation receiver and frequency modulation receiving method
Mstar Semiconductor, Inc.
January 04, 2018 - N°20180006800

A frequency modulation receiver includes a frequency modulation demodulation circuit that generates a first signal, and a phase locked loop (pll) circuit coupled to the frequency modulation demodulation circuit to receive the first signal. The pll circuit includes: a voltage-controlled oscillator (vco), generating an oscillation output signal according to a filtered output signal; a phase detector, coupled to the vco, ...
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Electronic tuning system
Intel Ip Corporation
December 28, 2017 - N°20170373671

A system is described for maintaining an inductive-capacitive (lc) network at resonance while the excitation frequency may be varied between a number of discrete frequencies at desired instants controlled by a modulation input, while taking into account component parameter errors due environmental and ageing as well as manufacturing tolerances. Control of the resonance while the excitation frequency changes permits the ...
Electronic device having fm antenna and method for switching fm antenna
Chiun Mai Communication Systems, Inc.
December 21, 2017 - N°20170366211

An electronic device with a frequency modulation (fm) antenna includes an earphone jack, an fm chip, a switching unit, and a processing unit. The earphone jack includes a left channel pin, a right channel pin, and a ground pin. The fm chip receives an fm signal and outputs a receive signal strength indicator (rssi) value of the fm signal to ...
Photon modulation management system
Xiant Technologies, Inc
December 07, 2017 - N°20170347532

Embodiments described herein provide systems for inducing a desired response in an organism by controlling the duty cycle, wavelength band and frequency of photon bursts to an organism, through the photon modulation of one or more photon pulse trains in conjunction with one or more different photon pulse trains to the organism and duty cycle, where the photon modulation and ...
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Direct detection lidar system and method with frequency modulation (fm) transmitter and quadrature receiver
Autoliv Asp, Inc.
November 30, 2017 - N°20170343652

A lidar system and method include a signal generator generating an output signal having a variable frequency. A modulation circuit receives the output signal from the signal generator and applies the output signal from the signal generator to an optical signal to generate an envelope-modulated optical signal having a frequency-modulated (fm) modulation envelope. Optical transmission elements transmit the envelope-modulated optical ...
Single photons communication method and system
Shanxi University
November 16, 2017 - N°20170331560

A single photons communication method and system is provided. In an example, an information loading module in a transmitting terminal of the single photons communication system may code to-be-sent target information as a corresponding target modulation frequency according to a pre-saved relationship between information and modulation frequency, and perform frequency modulation on a quantum state of communication light generated by ...
Method and apparatus to evaluate audio equipment via at least one filter for dynamic distortions ...
Shanxi University
November 16, 2017 - N°20170328939

A testing method or apparatus utilizes a filter or modifier to measure time varying or dynamic harmonic, intermodulation, cross modulation, and or n-beat or triple distortion from a device. With a stairstep or arbitrary signal and another signal, nth order harmonic, cross modulation, triple beat, n-beat, and or intermodulation distortion is measured via the filter or modifier at different offsets ...
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 ...
Polarization modulation
Seiko Epson Corporation
October 12, 2017 - N°20170294954

Combined electromagnetic waves pertains to using more than one electromagnetic wave in a mathematical formula with all electromagnetic waves being included in the formula. Single frequency, pertaining to this patent application ser. No. 15/093,572 pertains to what is commonly referred to as the carrier frequency. The modulation from each of the antennas independently can be in the form of amplitude modulation, ...
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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 ...
Vehicle communication system for receiving frequency modulation and digital audio broadcast radio frequency bands
Gm Global Technology Operations Llc
September 07, 2017 - N°20170257179

An antenna system for a vehicle that includes at least one radio frequency (rf) antenna that receives both a digital audio broadcasting (dab) rf broadcast and a frequency modulation (fm) rf broadcast. A single amplifier coupled to one or more antennas is used to process both the dab and fm broadcasts.
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.
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