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公开(公告)号：US11777339B2
公开(公告)日：2023-10-03
申请号：US17566991
申请日：2021-12-31
Applicant: Renesas Electronics America Inc.
Inventor： Gustavo James Mehas , Tae Kwang Park , Giovanni Figliozzi
Abstract: In an embodiment, a wireless power transmitter is disclosed that includes a first field-effect transistor, a second field-effect transistor a coil and an analog front end. The wireless power transmitter is configured to drive the coil based at least in part on activations of the first and second field-effect transistors. The analog front end includes a first driver corresponding to the first field-effect transistor and being configured to control activation of the first field-effect transistor based at least in part on a pulse-width modulation signal and a second driver corresponding to the second field-effect transistor and being configured to control activation of the second field-effect transistor based at least in part on the pulse-width modulation signal.
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公开(公告)号：US11991027B2
公开(公告)日：2024-05-21
申请号：US17678175
申请日：2022-02-23
Applicant: Renesas Electronics America Inc.
Inventor： Gustavo James Mehas , Giovanni Figliozzi , Xintian Shi , Francesco Santoro
CPC classification number: H04L25/4902 , H02J50/10 , H03K5/01 , H04B5/24
Abstract: Systems and methods for phase demodulation is described. A wireless power transmitter can include a controller, a transmission coil, and an integrated circuit connected to the controller and the transmission coil. The integrated circuit can be configured to measure a voltage of a transmission coil of a wireless power transmitter. The integrated circuit can be further configured to generate, based on the measured voltage, a pulse signal comprising a plurality of pulses. The integrated circuit can be further configured to send the pulse signal to the controller of the wireless power transmitter. The controller can be configured to perform phase demodulation using the pulse signal.
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公开(公告)号：US11811369B2
公开(公告)日：2023-11-07
申请号：US17691315
申请日：2022-03-10
Applicant: Renesas Electronics America Inc.
Inventor： Gustavo James Mehas , Marcin Kamil Augustyniak , Giovanni Figliozzi
CPC classification number: H03F3/04 , H02J50/10 , H03F2200/375
Abstract: Systems and methods for calibrating a wireless power transmitter is described. A wireless power transmitter can include a controller and an amplifier module. The amplifier module can include an amplifier configured to amplify a voltage converted from a current proportional to power consumed by a wireless power transmitter, and a circuit connected to the amplifier. The circuit can be configured to receive a control signal from the controller. The circuit can be further configured to perform time division multiplexing on an output of the amplifier according to the control signal. A time division multiplexed output of the amplifier can include calibration data of the amplifier. The amplifier can be configured to output the time division multiplexed output to the controller.
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公开(公告)号：US20230396472A1
公开(公告)日：2023-12-07
申请号：US17831959
申请日：2022-06-03
Applicant: Renesas Electronics America Inc.
Inventor： Damla Solmaz Acar , Pooja Agrawal , Jure Menart , Tao Qi , Mihail Jefremow , Gustavo James Mehas
Abstract: In an embodiment, a semiconductor device is disclosed that includes at least one processing device and firmware including a dynamic demodulation engine. The dynamic demodulation engine, when executed by the at least one processing device, is configured to obtain a digital signal waveform, dynamically select a bit detection method based at least in part on a characteristic of the digital signal waveform, perform demodulation of the digital signal waveform using the selected bit detection method and generate decoded packets based at least in part on the demodulation.
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公开(公告)号：US11719525B2
公开(公告)日：2023-08-08
申请号：US17505750
申请日：2021-10-20
Applicant: Renesas Electronics America Inc.
Inventor： Damla S. Acar , Pooja Agrawal , Ashley M. De Wolfe , Gustavo James Mehas , Nicholaus W. Smith
IPC: G01B7/14 , G06F1/16 , G06F3/04845 , G01D5/20
CPC classification number: G01B7/14 , G01D5/20 , G06F1/1615 , G06F3/04845
Abstract: Methods and systems for determining a position of a structure using inductive position sensing are described. In an example, a processor may receive a plurality of data points representing a plurality of voltages. The plurality of voltages may be generated by a plurality of sensor coils based on a magnetic flux field. The magnetic flux field may be generated by a plurality of driver coils, and the plurality of voltages may vary with changes in the magnetic flux field. The processor may calibrate the plurality of data points to generate a plurality of calibrated data points. The processor may filter the plurality of calibrated data points. The processor may estimate a position of the structure based on the filtered calibrated data points, where the position of the structure may indicate a size of a size changing device.
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Patent Agency Ranking
公开(公告)号：US20230120972A1
公开(公告)日：2023-04-20
申请号：US17505750
申请日：2021-10-20
Applicant: Renesas Electronics America Inc.
Inventor： Damla S. Acar , Pooja Agrawal , Ashley M. De Wolfe , Gustavo James Mehas , Nicholaus W. Smith
IPC: G01B7/14 , G01D5/20 , G06F3/0484 , G06F1/16
Abstract: Methods and systems for determining a position of a structure using inductive position sensing are described. In an example, a processor may receive a plurality of data points representing a plurality of voltages. The plurality of voltages may be generated by a plurality of sensor coils based on a magnetic flux field. The magnetic flux field may be generated by a plurality of driver coils, and the plurality of voltages may vary with changes in the magnetic flux field. The processor may calibrate the plurality of data points to generate a plurality of calibrated data points. The processor may filter the plurality of calibrated data points. The processor may estimate a position of the structure based on the filtered calibrated data points, where the position of the structure may indicate a size of a size changing device.
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公开(公告)号：US11770157B2
公开(公告)日：2023-09-26
申请号：US17680794
申请日：2022-02-25
Applicant: Renesas Electronics America Inc.
Inventor： Gustavo James Mehas , Giovanni Figliozzi
CPC classification number: H04B5/0037 , H02J50/12 , H02J50/40 , H02J50/60 , H04B5/0087
Abstract: In an embodiment, a semiconductor device is disclosed that comprises a multiplexer. The multiplexer is configured to receive signals from each of a plurality of transmission coils of a wireless power transmitter as inputs and to output an output signal based at least in part on one of the signals. The semiconductor device further comprises an attenuator connected to the multiplexer that is configured to adjust a voltage of the output signal. The attenuator comprises a variable resistance. The semiconductor device further comprises a plurality of pull down circuits each corresponding to one of the transmission coils. The pull down circuits are configured to selectively clamp the signals received from the corresponding transmission coils to ground.
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公开(公告)号：US12289193B2
公开(公告)日：2025-04-29
申请号：US18320570
申请日：2023-05-19
Applicant: Renesas Electronics America Inc.
Inventor： Damla Solmaz Acar , Mihail Jefremow , Jure Menart , Pooja Agrawal , Amit Bavisi , Gustavo James Mehas
Abstract: Systems and methods for demodulating a signal is described. A device can receive a modulated signal that encodes data. The device can sample a voltage of the modulated signal to generate a plurality of samples in digital domain. The device can determine in-phase data and quadrature data of the plurality of samples. The device can determine amplitude data and phase data based on the in-phase data and the quadrature data. The device can decode the amplitude data and phase data into digital symbols that represent the data encoded in the modulated signal.
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公开(公告)号：US12276532B2
公开(公告)日：2025-04-15
申请号：US17319659
申请日：2021-05-13
Applicant: Renesas Electronics America Inc.
Inventor： Gustavo James Mehas , Damla Acar , Ashley De Wolfe , Pooja Agrawal , Nicholaus Wayne Smith
Abstract: A method and a system may inductively determine a position of a display screen of a computing device. Associated processes may generate a magnetic field by providing an alternating current to a driver coil, and may generate a voltage at a sensor coil in response to the magnetic field. The system and method may additionally include determining a linear position of the display screen by executing an algorithm at a processor. An input to the algorithm may include voltage data associated with the voltage generated at the sensor coil. The linear position of the display screen may correspond to a size of the display screen between a minimum size and a maximum size.
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公开(公告)号：US11985014B2
公开(公告)日：2024-05-14
申请号：US17831959
申请日：2022-06-03
Applicant: Renesas Electronics America Inc.
Inventor： Damla Solmaz Acar , Pooja Agrawal , Jure Menart , Tao Qi , Mihail Jefremow , Gustavo James Mehas
Abstract: In an embodiment, a semiconductor device is disclosed that includes at least one processing device and firmware including a dynamic demodulation engine. The dynamic demodulation engine, when executed by the at least one processing device, is configured to obtain a digital signal waveform, dynamically select a bit detection method based at least in part on a characteristic of the digital signal waveform, perform demodulation of the digital signal waveform using the selected bit detection method and generate decoded packets based at least in part on the demodulation.
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