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公开(公告)号：US09645594B2
公开(公告)日：2017-05-09
申请号：US14881498
申请日：2015-10-13
Inventor： Sandor Petenyi
CPC classification number: G05F1/575
Abstract: A voltage regulator includes an input terminal to receive an input voltage, an output terminal to supply an output voltage, a power transistor, a differential amplifier, a driver, a dropout detector and a bias current limiter. The differential amplifier provides a drive signal based on a difference between a voltage reference and a feedback signal corresponding to the output voltage. The driver includes an impedance device, and a driver transistor that receives the drive signal so as to vary a bias current to a control terminal of the power transistor. The dropout detector and the bias current limiter is coupled to the input terminal, the impedance device, and the output terminal and includes first and second transistors coupled together, and a bias current generator coupled to the second transistor.
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公开(公告)号：US11979704B2
公开(公告)日：2024-05-07
申请号：US17537263
申请日：2021-11-29
Inventor： Tomas Teply , Karel Blaha
CPC classification number: H04R1/1025 , H04R1/1075 , H04R9/04 , H04R9/06 , H04R2420/07
Abstract: The present disclosure is directed to a device that includes a headphone speaker housing that includes a coil having a first terminal and a second terminal that is configured to operate in a sound generation mode and a battery charging mode. A class D amplifier circuit is configured to rectify in a battery charging mode and amplify in a sound generation mode, the class D amplifier is coupled to the first terminal and the second terminal of the coil. The class D amplifier including a first, second, third, and fourth switch, the first terminal coupled between the first and second switch, the second terminal coupled between the third and fourth switch. An audio generation circuit having a third terminal and a fourth terminal, the third terminal coupled between the first and third switch of the class D amplifier and the fourth terminal coupled between the second and fourth switch of the class D amplifier. A battery charging circuit coupled to the third terminal and the fourth terminal.
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33.发明授权公开(公告)号：US11817791B2
公开(公告)日：2023-11-14
申请号：US17490793
申请日：2021-09-30
Inventor： Alberto Iorio , Maurizio Foresta , Emilio Volpi , Jan Novotny
CPC classification number: H02M3/33592 , H02M1/0058 , H02M3/01 , H02M1/08
Abstract: A synchronous rectifier driver circuit is configured to drive a synchronous rectifier FET and includes a first terminal configured to be connected to a source terminal of the synchronous rectifier FET. A second terminal is configured to be connected to a drain terminal of the synchronous rectifier FET, and a third terminal is configured to be connected to a gate terminal of the synchronous rectifier FET. The synchronous rectifier driver circuit is configured to measure the voltage between the second terminal and the first terminal, and detect a switch-on instant in which the measured voltage reaches a first threshold value and a switch-off instant in which the measured voltage reaches a second threshold value. The synchronous rectifier driver circuit generates a drive signal between the third terminal and the first terminal as a function of the measured voltage.
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公开(公告)号：US11387679B2
公开(公告)日：2022-07-12
申请号：US17008238
申请日：2020-08-31
Inventor： Tomas Teply
IPC: H01M10/44 , H01M10/46 , H02J50/12 , H02J7/02 , H02J50/70 , H02J50/80 , H02J50/00 , H01F38/14 , H01F27/36 , H02J50/40 , H04R1/10 , H01F27/28
Abstract: A system and method for wireless charging a wireless earbud. The wireless earbud having a body that includes a passive magnetic shield and a coil. The coil is wound around a portion of the body comprising the passive magnetic shielding. The wireless earbud receiving wireless energy in response to the placement of the body within an electromagnetic field, which results in the charging of a battery of the wireless earbud.
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公开(公告)号：US11374579B2
公开(公告)日：2022-06-28
申请号：US17227974
申请日：2021-04-12
Inventor： Sandor Petenyi
Abstract: A circuit includes a current controller oscillator generating a CCO output signal at a CCO output, a charge pump boosting a supply voltage based on the CCO output signal and producing a charge pump output voltage at an output, and a current sensing circuit sensing load current at the output and generating a feedback signal having a magnitude that varies with the sensed load current if a magnitude of the sensed load current is between lower and upper load current thresholds. A frequency of the CCO output signal is constant at a lower frequency threshold where the sensed load current is below the lower load current threshold, asymptomically rises to an upper frequency threshold where the sensed load current is above the upper load current threshold, and is proportional to the feedback signal where the sensed load current is between the lower and upper load current thresholds.
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Patent Agency Ranking
公开(公告)号：US20220173918A1
公开(公告)日：2022-06-02
申请号：US17107532
申请日：2020-11-30
Inventor： Enrico Rosario Alessi , Mario Antonio Aleo , Karel Blaha , Pavel Vicek
Abstract: A method for mutual authentication that includes establishing a first inductive coupling between a wireless-power receiver and a wireless-power transmitter to transfer power from the wireless-power transmitter to the wireless-power receiver by a power signal and using the power signal to transmit a first response to a physically unclonable function to the wireless-power transmitter. The method further including generating a second response to the physically unclonable function and communicating information derived from the second response to initiate a mutual authentication process between the wireless-power receiver and the wireless-power transmitter during a subsequent inductive coupling.
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公开(公告)号：US10784876B1
公开(公告)日：2020-09-22
申请号：US16353122
申请日：2019-03-14
Inventor： Sandor Petenyi
Abstract: A charge pump circuit has load driven clock frequency management. The charge pump circuit includes a CCO generating a CCO output signal that has a frequency generally proportional to a feedback current, and a charge pump operated by the CCO output signal and boosting a supply voltage to produce a charge pump output voltage at an output coupled to a load. A current sensing circuit senses a load current drawn by the load and generates the feedback current as having a magnitude that varies as a function of the sensed load current if a magnitude of the load current is between a lower load current threshold and an upper load current threshold. The magnitude of the feedback current does not vary with the sensed load current if the magnitude of the sensed load current is not between the lower load current threshold and the upper load current threshold.
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公开(公告)号：US10678726B2
公开(公告)日：2020-06-09
申请号：US16360229
申请日：2019-03-21
Inventor： Fred Rennig , Ludek Beran
IPC: G06F13/362 , G06F13/40 , G06F11/07 , H04L12/403 , G05B19/042 , H03M13/09
Abstract: A device includes a master device, a set of slave devices and a bus. The master device is configured to transmit first messages carrying a set of operation data message portions indicative of operations for implementation by slave devices of the set of slave devices, and second messages addressed to slave devices in the set of slave devices. The second messages convey identifiers identifying respective ones of the slave devices to which the second messages are addressed requesting respective reactions towards the master device within respective expected reaction intervals. The slave devices are configured to receive the first messages transmitted from the master device, read respective operation data message portions in the set of operation data message portions, implement respective operations as a function of the respective operation data message portions read, and receive the second messages transmitted from the master device.
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公开(公告)号：US10289140B2
公开(公告)日：2019-05-14
申请号：US15336029
申请日：2016-10-27
Inventor： Sandor Petenyi
Abstract: A voltage regulator having bias current boosting is provided. The voltage regulator includes a power stage for providing an output voltage to a load. The voltage regulator includes a differential stage that receives a feedback voltage representative of the output voltage and a reference voltage and controls the power stage based on a difference between the reference voltage and the feedback voltage. The voltage regulator includes a bias current boosting stage that receives the feedback and reference voltages. The bias current boosting stage provides a boosted bias current having a current level that is based on the difference between the reference and feedback voltages. The boosted bias current biases the differential stage and hastens a response of the differential stage, in response to a change in the difference between the reference voltage and the feedback voltage, in controlling the power stage.
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40.发明申请公开(公告)号：US20180131544A1
公开(公告)日：2018-05-10
申请号：US15606979
申请日：2017-05-26
Inventor： Eusebio DICOLA , Elena SALURSO , Jan MILSIMER
IPC: H04L27/144 , H04L1/20 , G01R29/027
CPC classification number: H04L27/144 , G01R29/0273 , H04L1/1835 , H04L1/206 , H04L25/069 , H04L27/10 , H04L27/156 , H04L27/1563
Abstract: An occurrence of a first set of n periods of a frequency-shift-keying (FSK)-modulated waveform is counted, where n is an integer number. The n periods of the FSK-modulated waveform in the first set have a first time duration. An occurrence of a second set of n periods of the waveform is counted. The n periods of the waveform in the second set have a second time duration. The first time duration is determined based on the counting of the first set of n periods. The second time duration is determined based on the counting of the second set of n periods. A difference between the first time duration and the second time duration is compared to a threshold. Changes in frequency of the waveform are detected based on the comparing of the difference between the first time duration and the second time duration to the threshold.
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