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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：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：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：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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Patent Agency Ranking
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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公开(公告)号：US20210351620A1
公开(公告)日：2021-11-11
申请号：US17235207
申请日：2021-04-20
Applicant: Renesas Electronics America Inc.
Inventor： Gustavo Mehas , Changjae Kim , Nicholaus Smith , Pooja Agrawal
Abstract: According to some embodiments, a wireless power transmitter is disclosed. The wireless power transmitter can include a plurality of transmission coils arranged to cover a charging area and coupled with a ferrite; a plurality of local power controllers, each of the plurality of local power controllers coupled to drive a subset of the plurality of transmission coils, each subset of the plurality of transmission coils including a plurality of the plurality of transmission coils; and a microcontroller unit (MCU) coupled to the plurality of local power controllers, the microcontroller unit including a MCU processor executing instructions to designate states of each of the plurality of transmission coils, the states including active, de-active, and selected for receiver detection, and executing instructions to transmit instructions to each of the plurality of local power controllers in accordance with the state designations.
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公开(公告)号：US20240429754A1
公开(公告)日：2024-12-26
申请号：US18821148
申请日：2024-08-30
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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