Patents by Inventor Jim C. Hwang
Jim C. Hwang 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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Patent number: 11152970Abstract: An apparatus for detecting worn and/or unworn status of a wearable host device includes one or more first antennas, a second antenna, and a radio-frequency (RF) circuit to measure a dielectric loading based on an RF isolation. The second antenna is placed within a portion of the wearable host device that is substantially in contact with the skin of a user, and the RF isolation is between at least one of the one or more first antennas and the second antenna.Type: GrantFiled: September 22, 2020Date of Patent: October 19, 2021Assignee: APPLE INC.Inventors: Istvan J. Szini, Jim C. Hwang, Yoav Feinmesser
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Patent number: 10879745Abstract: Various techniques for temperature management during inductive energy transfer are disclosed. A transmitter device and/or a receiver device can be turned off during energy transfer based on the temperature of the transmitter device and/or of the receiver device.Type: GrantFiled: July 2, 2018Date of Patent: December 29, 2020Assignee: APPLE INC.Inventors: Amaury J. Heresztyn, Keith Cox, Eric S. Jol, Jeffrey M. Alves, Jim C. Hwang, Jeffrey J. Terlizzi, John M. Ananny, Nagarajan Kalyanasundaram, Robert S. Parnell, Steven G. Herbst, Todd K. Moyer, Albert J. Golko, Frank Liang
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Publication number: 20190157898Abstract: A receiver device in an inductive energy transfer system can include a touch sensing device. If the input surface of the touch sensing device is touched, a transmitter device can periodically stop transferring energy to allow the touch sensing device to sense touch samples while inductive energy transfer is inactive. Additionally or alternatively, a transmitter device can produce an averaged duty cycle by transferring energy to the receiver device for one or more periods at a first duty cycle step and for one or more periods at different second first duty cycle step. Additionally or alternatively, a transmitter device can reduce a current level received by a DC-to-AC converter if the current received by the DC-to-AC converter equals or exceeds a threshold. Additionally or alternatively, a transmitter device can ping a receiver device and transfer energy only after a response signal is received from the receiver device.Type: ApplicationFiled: January 28, 2019Publication date: May 23, 2019Inventors: Steven G. Herbst, Scott D. Morrison, Jeffrey M. Alves, Brandon R. Garbus, Jim C. Hwang, Robert S. Parnell, Terry L. Tikalsky
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Patent number: 10193372Abstract: A receiver device in an inductive energy transfer system can include a touch sensing device. If the input surface of the touch sensing device is touched, a transmitter device can periodically stop transferring energy to allow the touch sensing device to sense touch samples while inductive energy transfer is inactive. Additionally or alternatively, a transmitter device can produce an averaged duty cycle by transferring energy to the receiver device for one or more periods at a first duty cycle step and for one or more periods at different second first duty cycle step. Additionally or alternatively, a transmitter device can reduce a current level received by a DC-to-AC converter if the current received by the DC-to-AC converter equals or exceeds a threshold. Additionally or alternatively, a transmitter device can ping a receiver device and transfer energy only after a response signal is received from the receiver device.Type: GrantFiled: July 9, 2015Date of Patent: January 29, 2019Assignee: Apple Inc.Inventors: Steven G. Herbst, Scott D. Morrison, Jeffrey M. Alves, Brandon R. Garbus, Jim C. Hwang, Robert S. Parnell, Terry L. Tikalsky
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Publication number: 20190006892Abstract: Various techniques for temperature management during inductive energy transfer are disclosed. A transmitter device and/or a receiver device can be turned off during energy transfer based on the temperature of the transmitter device and/or of the receiver device.Type: ApplicationFiled: July 2, 2018Publication date: January 3, 2019Inventors: Amaury J. Heresztyn, Keith Cox, Eric S. Jol, Jeffrey M. Alves, Jim C. Hwang, Jeffrey J. Terlizzi, John M. Ananny, Nagarajan Kalyanasundaram, Robert S. Parnell, Steven G. Herbst, Todd K. Moyer, Albert J. Golko, Frank Liang
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Patent number: 10027185Abstract: A transmitter device for an inductive energy transfer system can include a DC-to-AC converter operably connected to a transmitter coil, a first capacitor connected between the transmitter coil and one output terminal of the DC-to-AC converter, and a second capacitor connected between the transmitter coil and another output terminal of the DC-to-AC converter. One or more capacitive shields can be positioned between the transmitter coil and an interface surface of the transmitter device. A receiver device can include a touch sensing device, an AC-to-DC converter operably connected to a receiver coil, a first capacitor connected between the receiver coil and one output terminal of the AC-to-DC converter, and a second capacitor connected between the receiver coil and another output terminal of the AC-to-DC converter. One or more capacitive shields can be positioned between the receiver coil and an interface surface of the receiver device.Type: GrantFiled: September 30, 2014Date of Patent: July 17, 2018Assignee: Apple Inc.Inventors: Todd K. Moyer, Albert Lin, Wesley W. Zuber, Yehonatan Perez, Jeffrey M. Alves, Makiko K. Brzezinski, Eric S. Jol, Paul J. Thompson, Priyank D. Patel, Christian M. Sauer, Christopher S. Graham, Jim C. Hwang, Micah Lewis-Kraus
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Patent number: 10014733Abstract: Various techniques for temperature management during inductive energy transfer are disclosed. A transmitter device and/or a receiver device can be turned off during energy transfer based on the temperature of the transmitter device and/or of the receiver device.Type: GrantFiled: August 27, 2015Date of Patent: July 3, 2018Assignee: Apple Inc.Inventors: Amaury J. Heresztyn, Keith Cox, Eric S. Jol, Jeffrey M. Alves, Jim C. Hwang, Jeffrey J. Terlizzi, John M. Ananny, Nagarajan Kalyanasundaram, Robert S. Parnell, Steven G. Herbst, Todd K. Moyer, Albert J. Golko, Frank Liang
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Publication number: 20160064947Abstract: One or more operations in an electronic device can be adjusted based on environment data, such as temperature data and/or humidity data. The electronic device may be, for example, a receiver device or a transmitter device in an inductive energy transfer system. Example operations that may be adjusted based on environmental data include, but are not limited to, the brightness of a display or a haptic output produced by a haptic mechanism.Type: ApplicationFiled: August 20, 2015Publication date: March 3, 2016Inventors: Amaury J. Heresztyn, Nagarajan Kalyanasundaram, John M. Ananny, Keith Cox, Frank F. Liang, Eugene Y. Kim, Mushtaq A. Sarwar, Jim C. Hwang, Jean-Pierre S. Guillou, Paul S. Drzaic, Peter M. Arnold, Storrs T. Hoen, Douglas A. Scott, Anthony J. Guetta
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Publication number: 20160064948Abstract: Various techniques for temperature management during inductive energy transfer are disclosed. A transmitter device and/or a receiver device can be turned off during energy transfer based on the temperature of the transmitter device and/or of the receiver device.Type: ApplicationFiled: August 27, 2015Publication date: March 3, 2016Inventors: Amaury J. Heresztyn, Keith Cox, Eric S. Jol, Jeffrey M. Alves, Jim C. Hwang, Jeffrey J. Terlizzi, John M. Ananny, Nagarajan Kalyanasundaram, Robert S. Parnell, Steven G. Herbst, Todd K. Moyer, Albert J. Golko, Frank Liang
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Publication number: 20160064992Abstract: A receiver device in an inductive energy transfer system can include a touch sensing device. If the input surface of the touch sensing device is touched, a transmitter device can periodically stop transferring energy to allow the touch sensing device to sense touch samples while inductive energy transfer is inactive. Additionally or alternatively, a transmitter device can produce an averaged duty cycle by transferring energy to the receiver device for one or more periods at a first duty cycle step and for one or more periods at different second first duty cycle step. Additionally or alternatively, a transmitter device can reduce a current level received by a DC-to-AC converter if the current received by the DC-to-AC converter equals or exceeds a threshold. Additionally or alternatively, a transmitter device can ping a receiver device and transfer energy only after a response signal is received from the receiver device.Type: ApplicationFiled: July 9, 2015Publication date: March 3, 2016Inventors: Steven G. Herbst, Scott D. Morrison, Jeffrey M. Alves, Brandon R. Garbus, Jim C. Hwang, Robert S. Parnell, Terry L. Tikalsky
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Publication number: 20150349539Abstract: A transmitter device for an inductive energy transfer system can include a DC-to-AC converter operably connected to a transmitter coil, a first capacitor connected between the transmitter coil and one output terminal of the DC-to-AC converter, and a second capacitor connected between the transmitter coil and another output terminal of the DC-to-AC converter. One or more capacitive shields can be positioned between the transmitter coil and an interface surface of the transmitter device. A receiver device can include a touch sensing device, an AC-to-DC converter operably connected to a receiver coil, a first capacitor connected between the receiver coil and one output terminal of the AC-to-DC converter, and a second capacitor connected between the receiver coil and another output terminal of the AC-to-DC converter. One or more capacitive shields can be positioned between the receiver coil and an interface surface of the receiver device.Type: ApplicationFiled: September 30, 2014Publication date: December 3, 2015Inventors: Todd K. Moyer, Albert Lin, Wesley W. Zuber, Yehonatan Perez, Jeffrey M. Alves, Makiko K. Brzezinski, Eric S. Jol, Paul J. Thompson, Priyank D. Patel, Christian M. Sauer, Christopher S. Graham, Jim C. Hwang, Micah Lewis-Kraus