Patents by Inventor Kelvin Fong
Kelvin Fong 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: 11928271Abstract: A method is provided. The method comprises: obtaining, by a processing system and using a set of rotation electrodes that interact with the knob interface, first resulting signals and second resulting signals; determining, by the processing system, an initial state of the knob interface using the first resulting signals and the second resulting signals; obtaining, by the processing system and using the set of rotation electrodes, third resulting signals indicating a first rotational state of the knob interface, based at least in part on the knob interface being rotated from the initial state to the first rotational state; determining, by the processing system, the rotational direction of the knob interface using the first resulting signals, the second resulting signals, and the third resulting signals; and adjusting, by the processing system, a setting using the determined rotational direction.Type: GrantFiled: August 24, 2022Date of Patent: March 12, 2024Assignee: Synaptics IncorporatedInventors: Kelvin Fong, Tomohiro Hirakawa, Yan-Ju Du
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Publication number: 20240069655Abstract: A method is provided. The method comprises: obtaining, by a processing system and using a set of rotation electrodes that interact with the knob interface, first resulting signals and second resulting signals; determining, by the processing system, an initial state of the knob interface using the first resulting signals and the second resulting signals; obtaining, by the processing system and using the set of rotation electrodes, third resulting signals indicating a first rotational state of the knob interface, based at least in part on the knob interface being rotated from the initial state to the first rotational state; determining, by the processing system, the rotational direction of the knob interface using the first resulting signals, the second resulting signals, and the third resulting signals; and adjusting, by the processing system, a setting using the determined rotational direction.Type: ApplicationFiled: August 24, 2022Publication date: February 29, 2024Inventors: Kelvin Fong, Tomohiro Hirakawa, Yan-Ju Du
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Patent number: 11709571Abstract: A method of detecting shift of a rotatable interface is disclosed. The rotatable interface has a fixed base with a conductive region on a bottom surface, the fixed base attached to a display screen of an input device. The method includes providing, during a first time period, a reference signal to first and second sets of electrodes of the input device that are each capacitively coupled to the conductive region. The method further includes, during a second time period, providing the reference signal to the first set of electrodes, providing a sensing signal to the second set of electrodes, and receiving, during the second time period, a resulting signal on the second set of electrodes. The method still further includes determining a translation of the rotatable interface relative to the display screen based, at least in part, on the resulting signal values received during the second time period.Type: GrantFiled: April 25, 2022Date of Patent: July 25, 2023Assignee: Synaptics IncorporatedInventor: Kelvin Fong
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Publication number: 20220244810Abstract: A method of detecting shift of a rotatable interface is disclosed. The rotatable interface has a fixed base with a conductive region on a bottom surface, the fixed base attached to a display screen of an input device. The method includes providing, during a first time period, a reference signal to first and second sets of electrodes of the input device that are each capacitively coupled to the conductive region. The method further includes, during a second time period, providing the reference signal to the first set of electrodes, providing a sensing signal to the second set of electrodes, and receiving, during the second time period, a resulting signal on the second set of electrodes. The method still further includes determining a translation of the rotatable interface relative to the display screen based, at least in part, on the resulting signal values received during the second time period.Type: ApplicationFiled: April 25, 2022Publication date: August 4, 2022Inventor: Kelvin Fong
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Publication number: 20220214764Abstract: A method of detecting shift of a rotatable interface is disclosed. The rotatable interface has a fixed base with a conductive region on a bottom surface, the fixed base attached to a display screen of an input device. The method includes providing, during a first time period, a reference signal to first and second sets of electrodes of the input device that are each capacitively coupled to the conductive region. The method further includes, during a second time period, providing the reference signal to the first set of electrodes, providing a sensing signal to the second set of electrodes, and receiving, during the second time period, a resulting signal on the second set of electrodes. The method still further includes determining a translation of the rotatable interface relative to the display screen based, at least in part, on the resulting signal values received during the second time period.Type: ApplicationFiled: January 6, 2021Publication date: July 7, 2022Inventor: Kelvin FONG
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Patent number: 11360614Abstract: A method of detecting shift of a rotatable interface is disclosed. The rotatable interface has a fixed base with a conductive region on a bottom surface, the fixed base attached to a display screen of an input device. The method includes providing, during a first time period, a reference signal to first and second sets of electrodes of the input device that are each capacitively coupled to the conductive region. The method further includes, during a second time period, providing the reference signal to the first set of electrodes, providing a sensing signal to the second set of electrodes, and receiving, during the second time period, a resulting signal on the second set of electrodes. The method still further includes determining a translation of the rotatable interface relative to the display screen based, at least in part, on the resulting signal values received during the second time period.Type: GrantFiled: January 6, 2021Date of Patent: June 14, 2022Assignee: Synaptics IncorporatedInventor: Kelvin Fong
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Patent number: 11256376Abstract: A sensing system is provided. A processing system drives a first subset of sensor electrodes with a sensing signal and receives corresponding resulting signals. The processing system also drives a second subset of the sensor electrodes with a reference signal and a third subset of the sensor electrodes with a guard signal. A rotatable electronic device includes a first coupling electrode and a second coupling electrode. The second coupling electrode couples with and receives the reference signal from the second subset of the sensor electrodes. The rotatable electronic device also includes a conductive region that rotates relative to the first coupling electrode and the second coupling electrode. The resulting signals are affected based on the position of the conductive region relative to the first coupling electrode when the first coupling electrode is coupled with the first subset of the sensor electrodes.Type: GrantFiled: January 6, 2021Date of Patent: February 22, 2022Assignee: Synaptics IncorporatedInventors: Kelvin Fong, Chun-Hsi Chen, Robert J. Bolender
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Publication number: 20210232260Abstract: A rotatable device has a stationary base including bottom and top surfaces. The bottom surface has a first set of coupling electrodes configured to receive a reference signal from first electrodes of an attached input device, and second and third sets of coupling electrodes each configured to receive resulting signals from a second set of input device electrodes. The top surface of the stationary base has first, second and third top regions respectively connected to the first, second and third sets of coupling electrodes. The rotatable device further includes a rotary wheel, configured to rotate relative to the stationary base, with a bottom portion provided with alternating conductive and non-conductive regions and configured to align with the top portion of the stationary base. The resulting signals of the input device are modified by the relative positions of the stationary base and the rotary wheel.Type: ApplicationFiled: January 6, 2021Publication date: July 29, 2021Inventors: Kelvin FONG, Chun-Hsi CHEN, Robert J. BOLENDER
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Patent number: 10921913Abstract: A rotatable device has a stationary base including bottom and top surfaces. The bottom surface has a first set of coupling electrodes configured to receive a reference signal from first electrodes of an attached input device, and second and third sets of coupling electrodes each configured to receive resulting signals from a second set of input device electrodes. The top surface of the stationary base has first, second and third top regions respectively connected to the first, second and third sets of coupling electrodes. The rotatable device further includes a rotary wheel, configured to rotate relative to the stationary base, with a bottom portion provided with alternating conductive and non-conductive regions and configured to align with the top portion of the stationary base. The resulting signals of the input device are modified by the relative positions of the stationary base and the rotary wheel.Type: GrantFiled: January 23, 2020Date of Patent: February 16, 2021Assignee: Synaptics IncorporatedInventors: Kelvin Fong, Robert J. Bolender
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Patent number: 10592802Abstract: An electronic synapse is disclosed, comprising a heavy metal layer having a high spin orbit coupling, a domain wall magnet layer having a bottom surface adjacent to a top surface of the heavy metal layer, the domain wall magnet layer having a perpendicular magnetic anisotropy, the domain wall magnet layer having a domain wall, the domain wall running parallel to a longitudinal axis of the domain wall magnet layer, a pinned layer having perpendicular magnetic anisotropy, and an oxide tunnel barrier connected between the domain wall magnet layer and the pinned layer, wherein the pinned layer, the oxide tunnel barrier, and the free layer form a magnetic tunnel junction.Type: GrantFiled: February 28, 2017Date of Patent: March 17, 2020Assignee: Purdue Research FoundationInventors: Abhronil Sengupta, Zubair Al Azim, Xuanyao Kelvin Fong, Kaushik Roy
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Patent number: 9959444Abstract: An input device for fingerprint sensing and proximity sensing includes a cover layer, where a top surface of the cover layer is configured to provide an input surface for a finger, a substrate having a cavity disposed below the cover layer, and a fingerprint sensor disposed below the cover layer and in the cavity of the substrate. A first adhesive layer is disposed between a top surface of the fingerprint sensor and a bottom surface of the cover layer in a fingerprint sensing area. A second adhesive layer is disposed between a top surface of the substrate and the bottom surface of the cover layer in a proximity sensing area.Type: GrantFiled: September 1, 2016Date of Patent: May 1, 2018Assignee: Synaptics IncorporatedInventors: Hong G. Young, Raymond Chin, Eric Jones, Kelvin Fong
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Publication number: 20170249550Abstract: An electronic synapse is disclosed, comprising a heavy metal layer having a high spin orbit coupling, a domain wall magnet layer having a bottom surface adjacent to a top surface of the heavy metal layer, the domain wall magnet layer having a perpendicular magnetic anisotropy, the domain wall magnet layer having a domain wall, the domain wall running parallel to a longitudinal axis of the domain wall magnet layer, a pinned layer having perpendicular magnetic anisotropy, and an oxide tunnel barrier connected between the domain wall magnet layer and the pinned layer, wherein the pinned layer, the oxide tunnel barrier, and the free layer form a magnetic tunnel junction.Type: ApplicationFiled: February 28, 2017Publication date: August 31, 2017Applicant: Purdue Research FoundationInventors: Abhronil Sengupta, Zubair Al Azim, Xuanyao Kelvin Fong, Kaushik Roy
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Publication number: 20170061193Abstract: An input device for fingerprint sensing and proximity sensing includes a cover layer, where a top surface of the cover layer is configured to provide an input surface for a finger, a substrate having a cavity disposed below the cover layer, and a fingerprint sensor disposed below the cover layer and in the cavity of the substrate. A first adhesive layer is disposed between a top surface of the fingerprint sensor and a bottom surface of the cover layer in a fingerprint sensing area. A second adhesive layer is disposed between a top surface of the substrate and the bottom surface of the cover layer in a proximity sensing area.Type: ApplicationFiled: September 1, 2016Publication date: March 2, 2017Inventors: Hong G. Young, Raymond Chin, Eric Jones, Kelvin Fong
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Publication number: 20070248847Abstract: Improved water distribution can be obtained within the cells of a fuel cell series stack by maintaining a suitable temperature difference between the cathode and anode sides of each cell in the stack during shutdown.Type: ApplicationFiled: September 10, 2004Publication date: October 25, 2007Inventors: Herwig Haas, Cara Startek, Michael Sexsmith, Andrew DeSouza, Kelvin Fong