Patents by Inventor Gustavo James Mehas
Gustavo James Mehas has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20230396472Abstract: 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.Type: ApplicationFiled: June 3, 2022Publication date: December 7, 2023Applicant: Renesas Electronics America Inc.Inventors: Damla Solmaz Acar, Pooja Agrawal, Jure Menart, Tao Qi, Mihail Jefremow, Gustavo James Mehas
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Publication number: 20230388174Abstract: 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.Type: ApplicationFiled: May 19, 2023Publication date: November 30, 2023Applicant: Renesas Electronics America Inc.Inventors: Damla Solmaz ACAR, Mihail JEFREMOW, Jure MENART, Pooja AGRAWAL, Amit BAVISI, Gustavo James MEHAS
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Patent number: 11811369Abstract: 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.Type: GrantFiled: March 10, 2022Date of Patent: November 7, 2023Assignee: Renesas Electronics America Inc.Inventors: Gustavo James Mehas, Marcin Kamil Augustyniak, Giovanni Figliozzi
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Patent number: 11777339Abstract: 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.Type: GrantFiled: December 31, 2021Date of Patent: October 3, 2023Assignee: Renesas Electronics America Inc.Inventors: Gustavo James Mehas, Tae Kwang Park, Giovanni Figliozzi
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Patent number: 11770157Abstract: 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.Type: GrantFiled: February 25, 2022Date of Patent: September 26, 2023Inventors: Gustavo James Mehas, Giovanni Figliozzi
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Publication number: 20230291365Abstract: 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.Type: ApplicationFiled: March 10, 2022Publication date: September 14, 2023Applicant: Renesas Electronics America Inc.Inventors: Gustavo James MEHAS, Marcin Kamil AUGUSTYNIAK, Giovanni FIGLIOZZI
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Publication number: 20230275619Abstract: 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.Type: ApplicationFiled: February 25, 2022Publication date: August 31, 2023Applicant: Renesas Electronics America Inc.Inventors: Gustavo James MEHAS, Giovanni FIGLIOZZI
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Publication number: 20230269117Abstract: 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.Type: ApplicationFiled: February 23, 2022Publication date: August 24, 2023Applicant: Renesas Electronics America Inc.Inventors: Gustavo James MEHAS, Giovanni FIGLIOZZI, Xintian SHI, Francesco SANTORO
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Patent number: 11719525Abstract: 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.Type: GrantFiled: October 20, 2021Date of Patent: August 8, 2023Assignee: Renesas Electronics America Inc.Inventors: Damla S. Acar, Pooja Agrawal, Ashley M. De Wolfe, Gustavo James Mehas, Nicholaus W. Smith
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Publication number: 20230216342Abstract: 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.Type: ApplicationFiled: December 31, 2021Publication date: July 6, 2023Applicant: Renesas Electronics America Inc.Inventors: Gustavo James MEHAS, Tae Kwang PARK, Giovanni FIGLIOZZI
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Publication number: 20230120972Abstract: 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.Type: ApplicationFiled: October 20, 2021Publication date: April 20, 2023Applicant: Renesas Electronics America Inc.Inventors: Damla S. Acar, Pooja Agrawal, Ashley M. De Wolfe, Gustavo James Mehas, Nicholaus W. Smith
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Patent number: 11527920Abstract: Embodiments described herein provide foreign object detection based on coil current sensing. The transmitter power loss is computed directly based on the coil current, in conjunction with, or in place of the conventional computation based on transmitter input current. The enhanced precision of the computer power loss can be used to more accurately detect a foreign object near the transmitter coil during a wireless power transfer.Type: GrantFiled: May 3, 2019Date of Patent: December 13, 2022Assignee: Integrated Device Technology, Inc.Inventors: Gustavo James Mehas, Amit D. Bavisi, Nicholaus Wayne Smith
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Patent number: 11418067Abstract: Embodiments described herein provide foreign object detection based on coil current sensing. The transmitter power loss is computed directly based on the coil current, in conjunction with, or in place of the conventional computation based on transmitter input current. The enhanced precision of the computer power loss can be used to more accurately detect a foreign object near the transmitter coil during a wireless power transfer.Type: GrantFiled: September 27, 2019Date of Patent: August 16, 2022Assignee: INTEGRATED DEVICE TECHNOLOGY, INC.Inventors: Gustavo James Mehas, Amit D. Bavisi, Nicholaus Wayne Smith
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Publication number: 20220205816Abstract: 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 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.Type: ApplicationFiled: May 13, 2021Publication date: June 30, 2022Applicant: Renesas Electronics America Inc.Inventors: Gustavo James MEHAS, Damla ACAR, Ashley DE WOLFE, Pooja AGRAWAL, Nicholaus Wayne SMITH
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Patent number: 10963764Abstract: According to another embodiment, a system includes a driver circuit that drives a first output and a second output; a coil coupled between the first output and the second output such that the driver circuit drives current through the coil in response to control signals; and a programmable slew circuit coupled to the driver circuit. In some embodiments, a switch is coupled between the first output and the coil. In some embodiments an over-voltage protection circuit is coupled to protect the driver circuit.Type: GrantFiled: July 12, 2019Date of Patent: March 30, 2021Assignee: Integrated Device Technology, Inc.Inventors: Rui Liu, Tao Qi, Lijie Zhao, Gustavo James Mehas, Tae Kwang Park, Zhitong Guo, Siqiang Fan
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Patent number: 10840741Abstract: A wireless power circuit is presented that includes a transmit coil coupled to a first node; a receive coil coupled to the first node; a switch circuit coupled to the transmit coil and the receive coil opposite the first node, the switch switching the transmit coil to a second node in a transmit mode and switching the receive coil to the second node in a receive mode; a controller coupled to the first node and the second node, the controller coupled to provide signals to the switch circuit; and a self-start circuit coupled to the receive coil (or Tx coil) that automatically selects one of the coils to be used, the self-start circuit providing power to the switch circuit to hold the switch circuit in the receive mode (or predefined coil to be selected by default).Type: GrantFiled: March 29, 2019Date of Patent: November 17, 2020Assignee: Integrated Device Technology, Inc.Inventors: Nicholaus Wayne Smith, Tao Qi, Jiangjian Huang, Chan Young Jeong, Gustavo James Mehas
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Patent number: 10699175Abstract: According to another embodiment, a system includes a driver circuit that drives a first output and a second output; a coil coupled between the first output and the second output such that the driver circuit drives current through the coil in response to control signals; and a programmable slew circuit coupled to the driver circuit. In some embodiments, a switch is coupled between the first output and the coil. In some embodiments an over-voltage protection circuit is coupled to protect the driver circuit.Type: GrantFiled: March 27, 2019Date of Patent: June 30, 2020Assignee: Integrated Device Technology, Inc.Inventors: Rui Liu, Tao Qi, Lijie Zhao, Gustavo James Mehas, Tae Kwang Park, Zhitong Guo, Siqiang Fan
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Publication number: 20200169123Abstract: Embodiments described herein provide foreign object detection based on coil current sensing. The transmitter power loss is computed directly based on the coil current, in conjunction with, or in place of the conventional computation based on transmitter input current. The enhanced precision of the computer power loss can be used to more accurately detect a foreign object near the transmitter coil during a wireless power transfer.Type: ApplicationFiled: May 3, 2019Publication date: May 28, 2020Inventors: Gustavo James Mehas, Amit D. Bavisi, Nicholaus Wayne Smith
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Publication number: 20200169124Abstract: Embodiments described herein provide foreign object detection based on coil current sensing. The transmitter power loss is computed directly based on the coil current, in conjunction with, or in place of the conventional computation based on transmitter input current. The enhanced precision of the computer power loss can be used to more accurately detect a foreign object near the transmitter coil during a wireless power transfer.Type: ApplicationFiled: September 27, 2019Publication date: May 28, 2020Inventors: Gustavo James MEHAS, Amit D. BAVISI, Nicholaus Wayne SMITH
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Patent number: 10554061Abstract: A charging system that includes a switching control circuit coupled to four series-coupled MOSFET transistors; a flying capacitor coupled across two of the four series-coupled MOSFET transistors; and node between the two of the four series coupled transistors that couples to an output inductor to form a buck regulator is presented. Embodiments of the charging system can have increased efficiency, can reduce the size and inductance of the output inductor, and can be produced with a low voltage process.Type: GrantFiled: November 30, 2017Date of Patent: February 4, 2020Assignee: Integrated Device Technology, Inc.Inventors: Rui Liu, Gustavo James Mehas, Lijie Zhao, Tae Kwang Park, Zhitong Guo