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公开(公告)号：US20230146600A1
公开(公告)日：2023-05-11
申请号：US17883948
申请日：2022-08-09
Applicant: Renesas Electronics America Inc.
Inventor： Chan Young Jeong , Tao Qi , Young Chul Ryu , Kwangmuk Choi , Pooja Agrawal , Krishal Jaswantsinh Solanki , Adnan Dzebic
Abstract: Systems, apparatuses, and methods for detecting a foreign object on a wireless power charging region are described. A circuit can detect an object inductively coupled to a wireless power transmitter. The circuit can further measure an input parameter prior to a power transfer stage, the input parameter can be one of an input current and an input power. The circuit can further compare the measured input parameter with a predetermined value. The circuit can further determine whether the object is a foreign object or the wireless power receiver based on a result of the comparison between the measured input parameter with the predetermined value.
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公开(公告)号：US12034320B2
公开(公告)日：2024-07-09
申请号：US17321312
申请日：2021-05-14
Applicant: Renesas Electronics America Inc.
Inventor： Changjae Kim , Damla Acar , Adnan Dzebic , Pooja Agrawal , Sophia Yi
CPC classification number: H02J7/00045 , G06F21/30 , H02J50/10 , H02J50/80 , H04L9/0869 , H04L9/3236 , H04L9/3239
Abstract: An authentication method for authenticating a wireless power transmitter to a wireless power receiver includes receiving a SSP value, an ID, and a random number RND from a wireless power receiver; determining an index based on the RND; choosing a base code from a set of base codes according to the index; determining a secure code from the base code, the index, the RND, the SSP value, and the ID; and transmitting the secure code to the wireless power receiver. A further method includes receiving a secure code from the wireless power transmitter; retrieving an index from the secure code; determining a base code from a set of base codes according to the index; calculating a second secure code; and authenticating the wireless power transmitter by comparing the secure code and the second secure code.
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公开(公告)号：US20210384747A1
公开(公告)日：2021-12-09
申请号：US17321312
申请日：2021-05-14
Applicant: Renesas Electronics America Inc.
Inventor： Changjae Kim , Damla Acar , Adnan Dzebic , Pooja Agrawal , Sophia Yi
Abstract: An authentication method for authenticating a wireless power transmitter to a wireless power receiver includes receiving a SSP value, an ID, and a random number RND from a wireless power receiver; determining an index based on the RND; choosing a base code from a set of base codes according to the index; determining a secure code from the base code, the index, the RND, the SSP value, and the ID; and transmitting the secure code to the wireless power receiver. A further method includes receiving a secure code from the wireless power transmitter; retrieving an index from the secure code; determining a base code from a set of base codes according to the index; calculating a second secure code; and authenticating the wireless power transmitter by comparing the secure code and the second secure code.
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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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Patent Agency Ranking
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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公开(公告)号：US12100972B2
公开(公告)日：2024-09-24
申请号：US17883948
申请日：2022-08-09
Applicant: Renesas Electronics America Inc.
Inventor： Chan Young Jeong , Tao Qi , Young Chul Ryu , Kwangmuk Choi , Pooja Agrawal , Krishal Jaswantsinh Solanki , Adnan Dzebic
Abstract: Systems, apparatuses, and methods for detecting a foreign object on a wireless power charging region are described. A circuit can detect an object inductively coupled to a wireless power transmitter. The circuit can further measure an input parameter prior to a power transfer stage, the input parameter can be one of an input current and an input power. The circuit can further compare the measured input parameter with a predetermined value. The circuit can further determine whether the object is a foreign object or the wireless power receiver based on a result of the comparison between the measured input parameter with the predetermined value.
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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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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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