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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 Frequency shaping noise in a dc-dc converter using pulse pairing
Silicon Laboratories Inc.
May 17, 2018 - N°20180138989

In one aspect, an apparatus includes: a pulse frequency modulation (pfm) voltage converter to receive a first voltage and provide a second voltage to a load; and a pulse generator. The pfm voltage converter may include an inductor to store energy based on the first voltage and a switch controllable to switchably couple the first voltage to the inductor. The ...
Device for transmitting energy and data and method for operating such device
Dualis Medtech Gmbh
May 10, 2018 - N°20180131241

Energy transmission device for the wireless transmission of energy to an active implant, comprising: a transmitter coil adapted for electrical connection to an energy source, and an implantable receiver coil adapted for inductive coupling to the transmitter coil for wireless energy transmission, wherein an implantable primary coil is electrically connected to a modulator, the modulator modulating an ac voltage supplied ...
Digital synthesizer, communication unit and method therefor
Nxp Usa, Inc.
May 03, 2018 - N°20180123605

A digital synthesizer is described that comprises: a digitally controlled oscillator, dco; a feedback loop; a ramp generator configured to generate a signal of frequency control words, fcw, that describes a desired frequency modulated continuous wave; and a phase comparator configured to compare a phase of the fcw output from the ramp generator and a signal fed back from the ...
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Frequency modulation mems triaxial gyroscope
Politecnico Di Milano
April 26, 2018 - N°20180112981

A frequency modulation mems triaxial gyroscope, having two mobile masses; a first and a second driving body coupled to the mobile masses through elastic elements rigid in a first direction and compliant in a second direction transverse to the first direction; and a third and a fourth driving body coupled to the mobile masses through elastic elements rigid in the ...
Photon modulation management system for stimulation of a desired response in birds
Xiant Technologies, Inc.
April 26, 2018 - N°20180110207

Embodiments described herein provide systems for stimulating a desired response, such as ovulation and egg laying, hunger, growth, mood and sexual maturity in birds, such as chickens, turkeys, ducks, quail and ostrich, by controlling the duty cycle, wavelength band and frequency of photon bursts to a bird, through the high frequency modulation of photons in an individual color spectrum to ...
Transmission device, method thereof, and program
Sony Corporation
April 19, 2018 - N°20180109287

A transmission device, method, and program for signal transmission with reduced intersymbol interference are disclosed. In one example, a mapping unit maps binary data to symbols and a generating unit generates a signal from the mapped symbols. A transmission band-limiting filter performs band limitation of the signal at a corner frequency higher than half a frequency of a symbol rate. ...
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Chargers with voltage amplitude modulation
Storedot Ltd.
April 19, 2018 - N°20180109117

Chargers and methods are provided which increase the charging efficiency of the chargers by implementing voltage amplitude modulation (vam) instead of voltage frequency modulation. The charging voltage amplitude is modulated using feedback from at least one energy storage device that is being charged by the charger, while maintaining a charging voltage frequency constant at a llc resonance frequency of the ...
Indirect transmission type automatic frequency modulation filter
Universal Microwave Technology, Inc.
April 12, 2018 - N°20180102579

Disclosed is an indirect transmission type automatic frequency modulation filter including a microwave body, a moving plate, a fastener, and a motor unit. The microwave body has plural openings. The moving plate includes a board, plural lugs and a first moving member, and the lugs and the first moving member form the board. The fastener includes a support base and ...
Shift control circuit and wireless device
Icom Incorporated
March 29, 2018 - N°20180091789

A shift control circuit includes a first limiter circuit, a phase shifter, a first suppressor, and a reducer. The first limiter circuit limits the amplitude of a control target signal input from a microphone, having undergone a-d conversion by an a-d convener, and frequency differentiation by a pre-emphasis circuit, and having the relative intensity of harmonic components increased. The phase ...
Shift control circuit and wireless device
Icom Incorporated
March 29, 2018 - N°20180091097

A signal input from a microphone is a-d converted by an a-d converter, is frequency differentiated by a pre-emphasis circuit, and is input to a shift control circuit. The shift control circuit includes a limiter circuit, a phase shifter, and a harmonic suppressor. The limiter circuit performs amplitude limitation so as to limit the amplitude of the input control target ...
Wideband residual sideband calibration
Qualcomm Incorporated
March 22, 2018 - N°20180083661

Various aspects of this disclosure describe the calibration of residual sideband energy in a receiver, for example estimating gain mismatch and phase mismatch in in-phase (i) and quadrature-phase channels (q) of a receiver. An input to the receiver is supplied with an input signal generated to comprise a bandwidth including a plurality of frequencies, such as a linear frequency modulation ...
Method for generating signals, method for analyzing signals, active stylus, and touch screen
Shenzhen Goodix Technology Co., Ltd.
March 22, 2018 - N°20180081457

A method for generating a signal includes: encoding, by an active stylus, transmission information into n-bit q-ary codes; performing, by the active stylus, frequency modulation on the n-bit q-ary codes, respectively, to generate a plurality of encoded frequency-modulated signals; and combining, by the active stylus, a preset fixed-frequency signal for detecting a stylus tip position with the plurality of encoded ...
Method for measuring the frequency modulation of a laser source
Thales
March 15, 2018 - N°20180073932

A method for reducing the peak factor of a signal transmitted in a frequency band comprising several channels, the signal using a plurality of channels in the band comprises: a step of clipping the signal, a step of subtracting the clipped signal from the signal, so as to obtain a peak signal, a step of filtering the peak signal with ...
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Dynamic current limit circuit
Dialog Semiconductor (uk) Limited
March 08, 2018 - N°20180069468

A system is disclosed which provides a dynamic current limit circuit that accurately defines both the lower and the upper limits for the current limit. The circuit ensures both the lower and upper current limits are well-controlled. The lower current limit is matched to the normal pulse-frequency modulation (pfm) limit, and the upper current limit is matched to the pulse-width ...
Voltage regulator current load sensing
March 01, 2018 - N°20180062516

A dc-dc converter including digital circuitry for determining load current supplied to a load. In some embodiments the digital circuitry determines the load current differently based on whether the dc-dc converter is operating in pulse frequency modulation mode or pulse width modulation mode. In some embodiments the dc-dc converter includes circuitry for determining if a short circuit or over current ...
Frequency conversion ultrasonic wine aging device
February 22, 2018 - N°20180051240

A frequency conversion ultrasonic wine aging device for bottled wine comprises a base (1), and an opening portion formed by extending upwards along a peripheral edge of the base (2); a container is arranged in the opening portion and used for containing a sound conducting medium solution; when the frequency conversion ultrasonic wine aging device is used, a wine bottle (3) is placed ...
Frequency modulation for magnetic pressure pulse tool
Baker Hughes Incorporated
February 15, 2018 - N°20180043463

An apparatus for applying a magnetic pressure to a work piece includes an inductor configured to be disposed in proximity to the work piece and a controller electrically connected to the inductor and configured to control a supply of electrical power in order to output a first voltage over a selected frequency range to determine a frequency that provides a ...
Channel selector for a radio frequency receiver
Continental Automotive Gmbh
February 08, 2018 - N°20180041180

A channel selector for a frequency modulation radio frequency receiver, including a band-pass filter, of which the frequency band is centred on the central frequency of the channel to be selected, and has a width that is automatically variable between a minimum value and a maximum value, the minimum value being determined dynamically proportional to a weighted sum of the ...
Method and apparatus for real-time non-invasive optical monitoring of decompression sickness state
February 08, 2018 - N°20180035932

Described herein is a device and system and method for the detection of naturally occurring gas bubbles in the bloodstream; in one embodiment, a wireless optical device may be placed on various parts of the body including a finger or earlobe or is coupled with the scuba mouthpiece and detects certain vital signs such as heart rate, blood oxygen saturation (...
System and method for continuous wave constant amplitude on-resonance and off-resonance spin-lock for magnetic resonance ...
The Chinese University Of Hong Kong
February 01, 2018 - N°20180031661

Mri techniques provide robust imaging in the presence of inhomogeneity in the b1 (rf) and/or b0 magnetic fields. The techniques include using a magnetization prep sequence that includes an adiabatic half passage (ahp) followed by a spin-lock pulse, followed by a reverse ahp, after which a data acquisition sequence can be applied. The ahp and reverse ahp can have ...
Dual amplitude modulation and polarization frequency modulation as well as compensation for noninvasive glucose monitoring
Texas A&m University System
February 01, 2018 - N°20180028101

An embodiment relates generally to an improved method and apparatus for modulating the amplitude and rotation of the plane of polarization of linearly polarized light for multiple uses but primarily as part of a noninvasive glucose monitoring system. As compared to previous monitoring systems, an embodiment provides faster monitoring while maintaining or even reducing noise and minimizing system complexity. Embodiments ...
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