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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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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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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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Patent Agency Ranking
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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公开(公告)号：US09785165B2
公开(公告)日：2017-10-10
申请号：US15014320
申请日：2016-02-03
Inventor： Sandor Petenyi , Calogero Ribellino
IPC: G05F1/575
CPC classification number: G05F1/575
Abstract: A significant reduction of the amplitude of the transient response is obtained by keeping a low dropout regulator circuit in a closed loop condition. This is achieved by manipulation of the reference voltage level when an open loop condition arises due to a falling input voltage. In this case, the reference voltage level is tracked with the input voltage level, keeping the output voltage regulated. As a consequence, the power pass element of the regulator is not forced into the linear region (in the case of a MOSFET) or deep saturation (in the case of a bipolar transistor).
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10.发明授权Startup circuitry and corresponding method for providing a startup correction to a main circuit connected to a startup circuitry 有权启动电路和用于向连接到启动电路的主电路提供起动校正的相应方法公开(公告)号：US08324944B2
公开(公告)日：2012-12-04
申请号：US12787285
申请日：2010-05-25
Applicant: Jaromir Schindler
Inventor： Jaromir Schindler
IPC: H03L7/00
CPC classification number: G05F3/30 , H03K17/223 , H03K2017/226
Abstract: A startup circuitry connected to a main circuit which has at least an output terminal connected to its feedback terminal by a feedback loop. The startup circuitry is connected to the main circuit in such a manner to break the feedback loop, by having a first circuit node connected to said output terminal of said main circuit and a second circuit node connected to its feedback terminal, said startup circuitry providing a correct output voltage value during the startup phase of said main circuit.
Abstract translation: 连接到主电路的启动电路，其至少具有通过反馈回路连接到其反馈端的输出端子。 启动电路通过使连接到所述主电路的所述输出端的第一电路节点和连接到其反馈端的第二电路节点以断开反馈回路的方式连接到主电路，所述启动电路提供一个 在所述主电路的启动阶段期间校正输出电压值。
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