SYSTEM AND A METHOD FOR ACQUIRING AN ELECTRICAL SIGNAL AND A WEARABLE DEVICE

    公开(公告)号:US20200069206A1

    公开(公告)日:2020-03-05

    申请号:US16558470

    申请日:2019-09-03

    Abstract: A system for acquiring an electrical signal comprises: a plurality of electrodes, a plurality of signal quality detectors, each detector, being configured to detect a signal from a pair of electrodes and each detector comprising an analog-to-digital converter for providing a digital representation of a first resolution of the detected signal; a signal selection logic for determining at least one quality measure of each of the digital representations for selecting a pair of electrodes for signal acquisition; a multiplexer for selecting a pair of electrodes for signal acquisition based on a control signal from the signal selection logic; and a signal processing unit for performing analog-to-digital conversion on the selected signal and providing a digital representation having a second resolution, which is higher than the first resolution.

    CHARGING CIRCUITRY, AN IMPLANT DEVICE, AND A METHOD FOR RECEIVING POWER THROUGH WIRELESS POWER TRANSFER

    公开(公告)号:US20250079899A1

    公开(公告)日:2025-03-06

    申请号:US18822693

    申请日:2024-09-03

    Abstract: A charging circuitry for receiving power through wireless power transfer comprises: a power receiver configured to receive an alternating current (AC) wireless power signal and store energy through resonance; a rectifying switch configured to selectively connect an output of the power receiver to a load a comparator connected to the output of the power receiver and configured to identify an extreme point of an output voltage signal (vs) of the power receiver and configured to cause the rectifying switch to be turned on based on identification of the extreme point; and a delay circuit configured to control a state of the comparator such that the comparator is disabled for a delay period between successive instances of the rectifying switch being turned on.

    POWER-ON RESET CIRCUITRY, AN IMPLANT DEVICE AND A METHOD FOR GENERATING A POWER-ON RESET SIGNAL

    公开(公告)号:US20240178833A1

    公开(公告)日:2024-05-30

    申请号:US18521237

    申请日:2023-11-28

    CPC classification number: H03K17/223 A61N1/3787 H03K19/20 H02J50/00

    Abstract: A power-on reset, POR, circuitry comprises: a comparator configured to output a POR trigger signal in dependence of a relation between a supply voltage and a target voltage level, wherein the comparator comprises a first output part configured to receive a balanced input; a trust unit comprising a second output part forming a replica of the first output part and configured to receive an unbalanced input, wherein the comparator and the trust unit are arranged in a common integrated circuit and wherein the trust unit is configured to output a trust signal indicating whether the POR trigger signal is trustable; and a decision unit configured to output a POR signal in dependence of the POR trigger signal and the trust signal.

    RECEIVER CIRCUITRY AND A METHOD FOR RECEIVING POWER THROUGH WIRELESS POWER TRANSFER, AND AN IMPLANT DEVICE

    公开(公告)号:US20240178705A1

    公开(公告)日:2024-05-30

    申请号:US18510802

    申请日:2023-11-16

    CPC classification number: H02J50/80 A61N1/3787 H02J7/0047

    Abstract: A receiver circuitry for receiving power through wireless power transfer comprises: a power receiver configured to receive a power signal from a wireless power transmitter and generate an alternating current, AC, input signal (VAC); a converter circuit configured to receive the AC input signal (VAC) and to convert the AC input signal (VAC) to a direct current, DC, output signal (VOUT); a control unit configured to control at least one parameter of the converter circuit for controlling efficiency of power transfer; a detector configured to generate a measurement signal (Vpeak) representing available power of the AC input signal (VAC); wherein the control unit is configured to receive the measurement signal from the detector and to control the at least one parameter based on the measurement signal for feedforward control of the at least one parameter.

    VOLTAGE REFERENCE GENERATOR AND A METHOD FOR CONTROLLING A MAGNITUDE OF A VARIATION OF AN OUTPUT VOLTAGE OF A VOLTAGE REFERENCE GENERATOR

    公开(公告)号:US20180231997A1

    公开(公告)日:2018-08-16

    申请号:US15890336

    申请日:2018-02-06

    CPC classification number: G05F1/468 G05F1/59 G05F3/08

    Abstract: According to an aspect of the present inventive concept there is provided voltage reference generator comprising: a voltage reference, a variable gain amplifier connected to an output terminal of the voltage reference, a sampling capacitor connected to an output terminal of the voltage reference generator and further connected to an output terminal of the variable gain amplifier via a sampling switch, said switch being adapted to close during a first portion of a switching period of said switch and said switch being adapted to open during a second portion of the switching period, a ripple monitor adapted to estimate a magnitude of variation of an output voltage of the voltage reference generator resulting from charging and discharging of the sampling capacitor, and to, based on the estimate, perform one of: control of the sampling switch to reduce a switching frequency of the sampling switch to increase a magnitude of the variation of the output voltage, and control of the sampling switch to increase the switching frequency, to decrease a magnitude of the variation of the output voltage. There is also provided a method.

    POWERING APPARATUS FOR WIRELESS POWERING AND A METHOD FOR CONTROLLING A POWERING APPARATUS

    公开(公告)号:US20220200349A1

    公开(公告)日:2022-06-23

    申请号:US17550331

    申请日:2021-12-14

    Abstract: A powering apparatus for wireless powering of a power receiving device comprises: a plurality of power transmitters configured to provide inductive coupling to the power receiving device; and an oscillator configured to provide a reference oscillator signal; wherein each power transmitter comprises an inductive element and a driving circuitry for providing a current signal for driving the inductive element, wherein the driving circuitry of each power transmitter is configured to receive the reference oscillator signal and a feedback signal of a current through the inductive element for controlling a phase of the current signal in relation to a phase of the reference oscillator signal, each of the plurality of power transmitters being configured for outputting a powering signal controlled by a common phase relation to the reference oscillator signal.

    LOW DROPOUT VOLTAGE REGULATOR, A SUPPLY VOLTAGE CIRCUIT AND A METHOD FOR GENERATING A CLEAN SUPPLY VOLTAGE

    公开(公告)号:US20200012303A1

    公开(公告)日:2020-01-09

    申请号:US16506331

    申请日:2019-07-09

    Abstract: A low dropout, LDO, voltage regulator comprising: an LDO input configured to receive an input voltage signal; an LDO output configured to output an output voltage signal; an error amplifying circuit, which is configured to receive a reference signal and a feedback signal associated with the output voltage signal, the error amplifying circuit being further configured to output an error signal; an output stage, which is configured to receive the error signal and output a control signal; and an output device, which is connected to the LDO input and configured to provide the output voltage signal and which is controlled by the control signal for regulating the output voltage signal; wherein the output stage is connected to the input voltage for receiving an adaptive bias current.

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