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公开(公告)号：US20230379003A1
公开(公告)日：2023-11-23
申请号：US18123855
申请日：2023-03-20
Applicant: Apple Inc.
Inventor： Jouya Jadidian , Sujeet Milind Patole
IPC: H04B5/00
CPC classification number: H04B5/0043 , H04B5/0081
Abstract: Embodiments are disclosed for a low-frequency detection and ranging. In an embodiment, an apparatus comprises: an open electrode; an alternating current (AC) voltage source configured to supply an excitation voltage to the open electrode at an excitation frequency; a resonant circuit coupled to the open electrode, the resonant circuit configured to oscillate when an object is within a detection distance of the open electrode; one or more processors configured to: obtain time domain samples of an output voltage of the resonant circuit when the resonant circuit is oscillating; convert the time domain samples into frequency domain samples; for each frequency domain sample, determine an amplitude difference and a phase difference as compared to an amplitude and phase of the excitation voltage; and determine a material class of the object based on the amplitude difference and the phase difference.
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公开(公告)号：US20220035001A1
公开(公告)日：2022-02-03
申请号：US16941810
申请日：2020-07-29
Applicant: Apple Inc.
Inventor： Harsha Shirahatti , Sujeet Milind Patole , Jouya Jadidian , Mikheil Tsiklauri , Shun Liu , Vaneet Pathak , Lei Wang , Kumar Gaurav Chhokra
Abstract: An electronic device may utilize various methods or systems to determine whether the electronic device is indoors or outdoors. The electronic device transmits wireless signals (e.g., radio detection and ranging (RADAR) signals). The electronic device receives reflections of the wireless signals. Using these received reflections of the wireless signals, the electronic device determines whether a power amplitude of the reflections is greater than or equal to a threshold value. In response to a determination that the power amplitude is not greater than or equal to the threshold value, the electronic device operates in an outdoor mode or an indoor mode.
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公开(公告)号：US12184354B2
公开(公告)日：2024-12-31
申请号：US18123855
申请日：2023-03-20
Applicant: Apple Inc.
Inventor： Jouya Jadidian , Sujeet Milind Patole
Abstract: Embodiments are disclosed for a low-frequency detection and ranging. In an embodiment, an apparatus comprises: an open electrode; an alternating current (AC) voltage source configured to supply an excitation voltage to the open electrode at an excitation frequency; a resonant circuit coupled to the open electrode, the resonant circuit configured to oscillate when an object is within a detection distance of the open electrode; one or more processors configured to: obtain time domain samples of an output voltage of the resonant circuit when the resonant circuit is oscillating; convert the time domain samples into frequency domain samples; for each frequency domain sample, determine an amplitude difference and a phase difference as compared to an amplitude and phase of the excitation voltage; and determine a material class of the object based on the amplitude difference and the phase difference.
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公开(公告)号：US20240305387A1
公开(公告)日：2024-09-12
申请号：US18661320
申请日：2024-05-10
Applicant: Apple Inc.
Inventor： Sujeet Milind Patole , Cheung-Wei Lam , Vaneet Pathak
Abstract: A wireless power system has a wireless power transmitting device and a wireless power receiving device. A clock signal may be provided to inverter circuitry in wireless power transmitting circuitry at a power transmission frequency. The clock signal may cause transistors in the inverter circuitry to turn on and off to create AC current signals through the wireless power transmitting coil. The clock signal may be processed to mitigate electromagnetic interference in the system.
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公开(公告)号：US11736032B1
公开(公告)日：2023-08-22
申请号：US18164291
申请日：2023-02-03
Applicant: Apple Inc.
Inventor： Sujeet Milind Patole , Cheung-Wei Lam , Mahmoud N Mahmoud
CPC classification number: H02M7/4803 , H02M1/0041 , H02M1/12 , H02M7/529
Abstract: An electronic device may include an inverter. The inverter may convert direct current (DC) power to alternating current (AC) power. The inverter may use a clock signal at a given frequency to output corresponding alternating current signals at the given frequency. The inverter may receive a dithered clock signal that is frequency dithered using a modulating signal. The dithered clock signal may have at least three different frequency levels during a repeated cycle of the modulating signal. The at least three different frequency levels may include a fundamental frequency, a first frequency that is lower than the fundamental frequency, and a second frequency that is higher than the fundamental frequency. The dithered clock signal may be, during the repeated cycle of the modulating signal, at the fundamental frequency for fewer total periods than at the first frequency and for fewer total periods than at the second frequency.
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Patent Agency Ranking
公开(公告)号：US12015450B2
公开(公告)日：2024-06-18
申请号：US18341518
申请日：2023-06-26
Applicant: Apple Inc.
Inventor： Sujeet Milind Patole , Cheung-Wei Lam , Vaneet Pathak
Abstract: A wireless power system has a wireless power transmitting device and a wireless power receiving device. A clock signal may be provided to inverter circuitry in wireless power transmitting circuitry at a power transmission frequency. The clock signal may cause transistors in the inverter circuitry to turn on and off to create AC current signals through the wireless power transmitting coil. The clock signal may be processed to mitigate electromagnetic interference in the system.
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公开(公告)号：US12009760B2
公开(公告)日：2024-06-11
申请号：US18341474
申请日：2023-06-26
Applicant: Apple Inc.
Inventor： Sujeet Milind Patole , Cheung-Wei Lam , Mahmoud N Mahmoud
CPC classification number: H02M7/4803 , H02M1/0041 , H02M1/12 , H02M7/529
Abstract: An electronic device may include an inverter. The inverter may convert direct current (DC) power to alternating current (AC) power. The inverter may use a clock signal at a given frequency to output corresponding alternating current signals at the given frequency. The inverter may receive a dithered clock signal that is frequency dithered using a modulating signal. The dithered clock signal may have at least three different frequency levels during a repeated cycle of the modulating signal. The at least three different frequency levels may include a fundamental frequency, a first frequency that is lower than the fundamental frequency, and a second frequency that is higher than the fundamental frequency. The dithered clock signal may be, during the repeated cycle of the modulating signal, at the fundamental frequency for fewer total periods than at the first frequency and for fewer total periods than at the second frequency.
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公开(公告)号：US20240077583A1
公开(公告)日：2024-03-07
申请号：US18460309
申请日：2023-09-01
Applicant: Apple Inc.
Inventor： Harsha Shirahatti , Sujeet Milind Patole , Jouya Jadidian , Mikheil Tsiklauri , Shun Liu , Vaneet Pathak , Lei Wang , Kumar Gaurav Chhokra
Abstract: An electronic device may utilize various methods or systems to determine whether the electronic device is indoors or outdoors. The electronic device transmits wireless signals (e.g., radio detection and ranging (RADAR) signals). The electronic device receives reflections of the wireless signals. Using these received reflections of the wireless signals, the electronic device determines whether a power amplitude of the reflections is greater than or equal to a threshold value. In response to a determination that the power amplitude is not greater than or equal to the threshold value, the electronic device operates in an outdoor mode or an indoor mode.
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公开(公告)号：US11799565B2
公开(公告)日：2023-10-24
申请号：US17858228
申请日：2022-07-06
Applicant: Apple Inc.
Inventor： Sujeet Milind Patole , Cheung-Wei Lam , Vaneet Pathak
Abstract: A wireless power system has a wireless power transmitting device and a wireless power receiving device. A clock signal may be provided to inverter circuitry in wireless power transmitting circuitry at a power transmission frequency. The clock signal may cause transistors in the inverter circuitry to turn on and off to create AC current signals through the wireless power transmitting coil. The clock signal may be processed to mitigate electromagnetic interference in the system.
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公开(公告)号：US11611374B2
公开(公告)日：2023-03-21
申请号：US17394336
申请日：2021-08-04
Applicant: Apple Inc.
Inventor： Jouya Jadidian , Sujeet Milind Patole
IPC: H04B5/00
Abstract: Embodiments are disclosed for a low-frequency detection and ranging. In an embodiment, an apparatus comprises: an open electrode; an alternating current (AC) voltage source configured to supply an excitation voltage to the open electrode at an excitation frequency; a resonant circuit coupled to the open electrode, the resonant circuit configured to oscillate when an object is within a detection distance of the open electrode; one or more processors configured to: obtain time domain samples of an output voltage of the resonant circuit when the resonant circuit is oscillating; convert the time domain samples into frequency domain samples; for each frequency domain sample, determine an amplitude difference and a phase difference as compared to an amplitude and phase of the excitation voltage; and determine a material class of the object based on the amplitude difference and the phase difference.
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