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公开(公告)号：US10184909B2
公开(公告)日：2019-01-22
申请号：US15275202
申请日：2016-09-23
Applicant: Apple Inc.
Inventor： Vishal Gupta , Timothy M. Johnson , Nilay D. Jani , Yehonatan Perez
Abstract: Methods, structures, and apparatus that are able to detect the presence of a connection to a device contact of an electronic device and are also able to detect the presence of contamination at the device contact. A host device includes a connection detection circuit and a contamination detection circuit connected to the device contact. The connection detection circuit includes a pull-up resistor that is pulled down by a pull-down resistor in an accessory device following a connection. The contamination detection circuit includes a current source to provide a current at the device contact and measurement circuitry to measure a resulting voltage.
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公开(公告)号：US11484267B2
公开(公告)日：2022-11-01
申请号：US16565127
申请日：2019-09-09
Applicant: Apple Inc.
Inventor： Tao Shui , Han Bi , Na Huang , Nilay D. Jani
Abstract: Detecting user contact with one or more electrodes of a physiological signal sensor can be used to ensure physiological signals measured by the physiological signal sensor meet waveform characteristics (e.g., of a clinically accurate physiological signal). In some examples, a mobile and/or wearable device can comprise sensing circuitry, stimulation circuitry, and processing circuitry. The stimulation circuit can drive one or more stimulation signals on one or more electrodes, the resulting signal(s) can be measured (e.g., by the sensing circuitry), and the processing circuitry can determine whether a user is in contact with the electrode(s). Additionally or alternatively, in some examples, mobile and/or wearable device can comprise saturation detection circuitry, and the processing circuitry can determine whether the sensing circuitry is saturated.
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公开(公告)号：US11419551B2
公开(公告)日：2022-08-23
申请号：US16565127
申请日：2019-09-09
Applicant: Apple Inc.
Inventor： Tao Shui , Han Bi , Na Huang , Nilay D. Jani
Abstract: Detecting user contact with one or more electrodes of a physiological signal sensor can be used to ensure physiological signals measured by the physiological signal sensor meet waveform characteristics (e.g., of a clinically accurate physiological signal). In some examples, a mobile and/or wearable device can comprise sensing circuitry, stimulation circuitry, and processing circuitry. The stimulation circuit can drive one or more stimulation signals on one or more electrodes, the resulting signal(s) can be measured (e.g., by the sensing circuitry), and the processing circuitry can determine whether a user is in contact with the electrode(s). Additionally or alternatively, in some examples, mobile and/or wearable device can comprise saturation detection circuitry, and the processing circuitry can determine whether the sensing circuitry is saturated.
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Patent Agency Ranking
公开(公告)号：US10355514B2
公开(公告)日：2019-07-16
申请号：US15485078
申请日：2017-04-11
Applicant: Apple Inc.
Inventor： Stephen C. Terry , Nilay D. Jani , Bin Gu , Yongxuan Hu
Abstract: A wireless power transmitting device may transmit power wirelessly to a wireless power receiving device. The wireless power receiving device may be a portable electronic device with an array of wireless power receiving coils that receive wireless power from wireless power transmitting coils in the wireless power transmitting device. Each receiving coil in the array of wireless power receiving coils may be coupled to a respective rectifier. Control circuitry of the wireless power receiving device may be configured to determine which rectifiers to enable for synchronous rectification. The control circuitry may be configured to enable at least one rectifier based on the alternating-current voltages produced by each coil in the array of receiving coils. The control circuitry may also be configured to enable at least one rectifier based on the output current from each rectifier.
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公开(公告)号：US20180062416A1
公开(公告)日：2018-03-01
申请号：US15485078
申请日：2017-04-11
Applicant: Apple Inc.
Inventor： Stephen C. Terry , Nilay D. Jani , Bin Gu , Yongxuan Hu
Abstract: A wireless power transmitting device may transmit power wirelessly to a wireless power receiving device. The wireless power receiving device may be a portable electronic device with an array of wireless power receiving coils that receive wireless power from wireless power transmitting coils in the wireless power transmitting device. Each receiving coil in the array of wireless power receiving coils may be coupled to a respective rectifier. Control circuitry of the wireless power receiving device may be configured to determine which rectifiers to enable for synchronous rectification. The control circuitry may be configured to enable at least one rectifier based on the alternating-current voltages produced by each coil in the array of receiving coils. The control circuitry may also be configured to enable at least one rectifier based on the output current from each rectifier.
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公开(公告)号：US12042301B2
公开(公告)日：2024-07-23
申请号：US17821435
申请日：2022-08-22
Applicant: Apple Inc.
Inventor： Tao Shui , Han Bi , Na Huang , Nilay D. Jani
CPC classification number: A61B5/6844 , A61B5/24 , A61B5/681 , A61B5/7203 , A61B5/7228 , A61B5/7475 , A61B5/30 , A61B5/304
Abstract: Detecting user contact with one or more electrodes of a physiological signal sensor can be used to ensure physiological signals measured by the physiological signal sensor meet waveform characteristics (e.g., of a clinically accurate physiological signal). In some examples, a mobile and/or wearable device can comprise sensing circuitry, stimulation circuitry, and processing circuitry. The stimulation circuit can drive one or more stimulation signals on one or more electrodes, the resulting signal(s) can be measured (e.g., by the sensing circuitry), and the processing circuitry can determine whether a user is in contact with the electrode(s). Additionally or alternatively, in some examples, mobile and/or wearable device can comprise saturation detection circuitry, and the processing circuitry can determine whether the sensing circuitry is saturated.
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公开(公告)号：US11751790B1
公开(公告)日：2023-09-12
申请号：US16551704
申请日：2019-08-26
Applicant: Apple Inc.
Inventor： Priyank Dineshbhai Patel , Nilay D. Jani
IPC: A61B5/276 , H03K17/687 , A61B5/00 , A61B5/339
CPC classification number: A61B5/276 , A61B5/339 , A61B5/681 , A61B5/6826 , A61B5/7221 , H03K17/687 , A61B2562/0209
Abstract: Galvanic corrosion of an external electrode of a physiological signal sensor (e.g., ECG sensor) can be reduced. In some examples, protective circuitry, such as a switching circuit, can be used to reduce galvanic corrosion. In a first mode of operation (e.g., corresponding to measurement by the physiological signal sensor), the switching circuit can provide a low-impedance path (e.g., from an external electrode to ground). In a second mode of operation (e.g., corresponding to non-measurement by the physiological sensing system), the switching circuit can provide a high-impedance path to reduce leakage currents (e.g., between the external electrode and ground), and thereby reduce galvanic corrosion.
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公开(公告)号：US20180088067A1
公开(公告)日：2018-03-29
申请号：US15275202
申请日：2016-09-23
Applicant: Apple Inc.
Inventor： Vishal Gupta , Timothy M. Johnson , Nilay D. Jani , Yehonatan Perez
IPC: G01N27/20
CPC classification number: G01N27/028 , G01R31/045 , H01R43/002 , H01R2201/20
Abstract: Methods, structures, and apparatus that are able to detect the presence of a connection to a contact of an electronic device and are also able to detect the presence of contamination at the contact.
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