Patents by Inventor Brendan Lawton
Brendan Lawton 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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Publication number: 20240094848Abstract: Apparatuses and methods of differential driving of adjacent electrodes for low electromagnetic interference (EMI) for scanning a touch panel are described. One apparatus generates an in-phase drive signal and an opposite-phase drive signal and applies, at a substantially same time, the in-phase drive signal to a first transmitter electrode and the opposite-phase drive signal to a second transmitter electrode adjacent to the first transmitter electrode. The apparatus receives a first sense signal from a first receiver electrode and a second sense signal from a second receiver electrode adjacent to the first receiver electrode. The apparatus combines the first sense signal and the second sense signal to obtain a third sense signal. The third sense signal represents a first self capacitance associated with the first receiver electrode. The apparatus detects a presence of an object on a touch panel using at least the first self capacitance.Type: ApplicationFiled: October 19, 2023Publication date: March 21, 2024Applicant: Cypress Semiconductor CorporationInventors: Khosrov D. SADEGHIPOUR, Brendan LAWTON
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Patent number: 11816287Abstract: Apparatuses and methods of differential driving of adjacent electrodes for low electromagnetic interference (EMI) for scanning a touch panel are described. One apparatus generates an in-phase drive signal and an opposite-phase drive signal and applies, at a substantially same time, the in-phase drive signal to a first transmitter electrode and the opposite-phase drive signal to a second transmitter electrode adjacent to the first transmitter electrode. The apparatus receives a first sense signal from a first receiver electrode and a second sense signal from a second receiver electrode adjacent to the first receiver electrode. The apparatus combines the first sense signal and the second sense signal to obtain a third sense signal. The third sense signal represents a first self capacitance associated with the first receiver electrode. The apparatus detects a presence of an object on a touch panel using at least the first self capacitance.Type: GrantFiled: September 20, 2021Date of Patent: November 14, 2023Assignee: Cypress Semiconductor CorporationInventors: Khosrov D. Sadeghipour, Brendan Lawton
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Publication number: 20230100570Abstract: Apparatuses and methods of differential driving of adjacent electrodes for low electromagnetic interference (EMI) for scanning a touch panel are described. One apparatus generates an in-phase drive signal and an opposite-phase drive signal and applies, at a substantially same time, the in-phase drive signal to a first transmitter electrode and the opposite-phase drive signal to a second transmitter electrode adjacent to the first transmitter electrode. The apparatus receives a first sense signal from a first receiver electrode and a second sense signal from a second receiver electrode adjacent to the first receiver electrode. The apparatus combines the first sense signal and the second sense signal to obtain a third sense signal. The third sense signal represents a first self capacitance associated with the first receiver electrode. The apparatus detects a presence of an object on a touch panel using at least the first self capacitance.Type: ApplicationFiled: September 20, 2021Publication date: March 30, 2023Applicant: Cypress Semiconductor CorporationInventors: Khosrov D. Sadeghipour, Brendan Lawton
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Patent number: 11531435Abstract: Technology directed to low-emissions touch controller in in-cell touch display systems is described. One in-cell touch controller includes a signal generator circuit that is configured to generate a sense signal according to a sensing function, the sense signal including a windowed sinusoidal waveform. The controller generates a transition signal to transition the in-cell touch display between a display function and the sensing function. The controller drives the sense signal and the transition signal on common voltage (VCOM) layer of electrodes during a touch scanning interval. During a display function interval an integrated display driver is configured to drive a first signal on the VCOM layer of electrodes during a display function interval.Type: GrantFiled: January 14, 2022Date of Patent: December 20, 2022Assignee: Cypress Semiconductor CorporationInventors: Viktor Kremin, Oleksandr Pirogov, Jens Weber, Yarsolav Lek, Daniel O'Keeffe, Brendan Lawton, Khosrov D Sadeghipour, Gaurav Panchanan, Andrew Kinane
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Patent number: 11481066Abstract: A capacitance-sensing circuit may include a channel input associated with measuring a capacitance of a unit cell of a capacitive sense array. The capacitance-sensing circuit may also include a capacitive hardware baseliner that is coupled to the channel input. The capacitive hardware baseliner generates a baseline current based on a time constant of the channel input associated with the measuring of the capacitance of the element of the capacitive sense array using the programmable baseline resistor. The capacitive hardware baseliner provides the baseline current at the channel input to provide a charge for a sense capacitor. A change in the charge of the sense capacitor is provided by the baseline current indicating a presence of a tough object proximate to the element.Type: GrantFiled: June 30, 2021Date of Patent: October 25, 2022Assignee: Cypress Semiconductor CorporationInventors: Denis Ellis, Kaveh Hosseini, Timothy Williams, Gabriel Rowe, Roman Ogirko, Brendan Lawton
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Publication number: 20220197435Abstract: Technology directed to low-emissions touch controller in in-cell touch display systems is described. One in-cell touch controller includes a signal generator circuit that is configured to generate a sense signal according to a sensing function, the sense signal including a windowed sinusoidal waveform. The controller generates a transition signal to transition the in-cell touch display between a display function and the sensing function. The controller drives the sense signal and the transition signal on common voltage (VCOM) layer of electrodes during a touch scanning interval. During a display function interval an integrated display driver is configured to drive a first signal on the VCOM layer of electrodes during a display function interval.Type: ApplicationFiled: January 14, 2022Publication date: June 23, 2022Applicant: Cypress Semiconductor CorporationInventors: Viktor Kremin, Oleksandr Pirogov, Jens Weber, Yarsolav Lek, Daniel O'Keeffe, Brendan Lawton, Khosrov D. Sadeghipour, Gaurav Panchanan, Andrew Kinane
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Patent number: 11226706Abstract: Technology directed to low-emissions touch controller in in-cell touch display systems is described. One in-cell touch controller includes a signal generator circuit that is configured to generate a sense signal according to a sensing function, the sense signal including a windowed sinusoidal waveform. The controller generates a transition signal to transition the in-cell touch display between a display function and the sensing function. The controller drives the sense signal and the transition signal on common voltage (VCOM) layer of electrodes during a touch scanning interval. During a display function interval an integrated display driver is configured to drive a first signal on the VCOM layer of electrodes during a display function interval.Type: GrantFiled: September 18, 2020Date of Patent: January 18, 2022Assignee: Cypress Semiconductor CorporationInventors: Viktor Kremin, Oleksandr Pirogov, Jens Weber, Yarsolav Lek, Daniel O'Keeffe, Brendan Lawton, Khosrov D Sadeghipour, Gaurav Panchanan, Andrew Kinane
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Publication number: 20210405848Abstract: A capacitance-sensing circuit may include a channel input associated with measuring a capacitance of a unit cell of a capacitive sense array. The capacitance-sensing circuit may also include a capacitive hardware baseliner that is coupled to the channel input. The capacitive hardware baseliner generates a baseline current based on a time constant of the channel input associated with the measuring of the capacitance of the element of the capacitive sense array using the programmable baseline resistor. The capacitive hardware baseliner provides the baseline current at the channel input to provide a charge for a sense capacitor. A change in the charge of the sense capacitor is provided by the baseline current indicating a presence of a tough object proximate to the element.Type: ApplicationFiled: June 30, 2021Publication date: December 30, 2021Applicant: Cypress Semiconductor CorporationInventors: Denis Ellis, Kaveh Hosseini, Timothy Williams, Gabriel Rowe, Roman Ogirko, Brendan Lawton
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Publication number: 20210216168Abstract: Technology directed to low-emissions touch controller in in-cell touch display systems is described. One in-cell touch controller includes a signal generator circuit that is configured to generate a sense signal according to a sensing function, the sense signal including a windowed sinusoidal waveform. The controller generates a transition signal to transition the in-cell touch display between a display function and the sensing function. The controller drives the sense signal and the transition signal on common voltage (VCOM) layer of electrodes during a touch scanning interval. During a display function interval an integrated display driver is configured to drive a first signal on the VCOM layer of electrodes during a display function interval.Type: ApplicationFiled: September 18, 2020Publication date: July 15, 2021Applicant: Cypress Semiconductor CorporationInventors: Viktor Kremin, Oleksandr Pirogov, Jens Weber, Yarsolav Lek, Daniel O'Keeffe, Brendan Lawton, Khosrov D. Sadeghipour, Gaurav Panchanan, Andrew Kinane
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Patent number: 11054938Abstract: A capacitance-sensing circuit may include a channel input associated with measuring a capacitance of a unit cell of a capacitive sense array. The capacitance-sensing circuit may also include a capacitive hardware baseliner that is coupled to the channel input. The capacitive hardware baseliner includes a programmable baseline resistor, and a buffer with an input coupled to the programmable baseline resistor and an output coupled to the channel input. The capacitive hardware baseliner generates a baseline current based on a time constant of the channel input associated with the measuring of the capacitance of the element of the capacitive sense array using the programmable baseline resistor. The capacitive hardware baseliner provides the baseline current at the channel input to provide a charge for a sense capacitor. A change in the charge of the sense capacitor is provided by the baseline current indicating a presence of a touch object proximate to the element.Type: GrantFiled: July 26, 2017Date of Patent: July 6, 2021Assignee: Cypress Semiconductor CorporationInventors: Denis Ellis, Kaveh Hosseini, Timothy John Williams, Gabriel Rowe, Roman Ogirko, Brendan Lawton
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Patent number: 10429998Abstract: A capacitance-sensing circuit may include a plurality of channel inputs associated with measuring a capacitance of a unit cell of a capacitive sense array. The capacitance-sensing circuit may also include a baseliner component that is coupled to the plurality of channel inputs. The baseliner component may generate a baseline compensation signal using a capacitive circuit and may provide the baseline compensation signal to each of the plurality of channel inputs of the capacitive sense array.Type: GrantFiled: June 26, 2015Date of Patent: October 1, 2019Assignee: Cypress Semiconductor CorporationInventors: Roman Ogirko, Denis Ellis, Kaveh Hosseini, Brendan Lawton
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Publication number: 20170371451Abstract: A capacitance-sensing circuit may include a channel input associated with measuring a capacitance of a unit cell of a capacitive sense array. The capacitance-sensing circuit may also include a capacitive hardware baseliner that is coupled to the channel input. The capacitive hardware baseliner includes a programmable baseline resistor, and a buffer with an input coupled to the programmable baseline resistor and an output coupled to the channel input. The capacitive hardware baseliner generates a baseline current based on a time constant of the channel input associated with the measuring of the capacitance of the element of the capacitive sense array using the programmable baseline resistor. The capacitive hardware baseliner provides the baseline current at the channel input to provide a charge for a sense capacitor. A change in the charge of the sense capacitor is provided by the baseline current indicating a presence of a touch object proximate to the element.Type: ApplicationFiled: July 26, 2017Publication date: December 28, 2017Applicant: Cypress Semiconductor CorporationInventors: Denis Ellis, Kaveh Hosseini, Timothy John Williams, Gabriel Rowe, Roman Ogirko, Brendan Lawton
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Patent number: 9746974Abstract: A capacitance-sensing circuit may include a channel input associated with measuring a capacitance of a unit cell of a capacitive sense array. The capacitance-sensing circuit may also include a capacitive hardware baseliner that is coupled to the channel input. The capacitive hardware baseliner may generate a baseline current using a baseline capacitor and may provide the baseline current to the channel input.Type: GrantFiled: March 26, 2015Date of Patent: August 29, 2017Assignee: CYPRESS SEMICONDUCTOR CORPORATIONInventors: Denis Ellis, Roman Ogirko, Kaveh Hosseini, Brendan Lawton, Timothy Williams, Gabriel Rowe
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Publication number: 20160054829Abstract: A capacitance-sensing circuit may include a channel input associated with measuring a capacitance of a unit cell of a capacitive sense array. The capacitance-sensing circuit may also include a capacitive hardware baseliner that is coupled to the channel input. The capacitive hardware baseliner may generate a baseline current using a baseline capacitor and may provide the baseline current to the channel input.Type: ApplicationFiled: March 26, 2015Publication date: February 25, 2016Inventors: Denis Ellis, Roman Ogirko, Kaveh Hosseini, Brendan Lawton, Timothy Williams, Gabriel Rowe
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Publication number: 20160026295Abstract: A capacitance-sensing circuit may include a plurality of channel inputs associated with measuring a capacitance of a unit cell of a capacitive sense array. The capacitance-sensing circuit may also include a baseliner component that is coupled to the plurality of channel inputs. The baseliner component may generate a baseline compensation signal using a capacitive circuit and may provide the baseline compensation signal to each of the plurality of channel inputs of the capacitive sense array.Type: ApplicationFiled: June 26, 2015Publication date: January 28, 2016Inventors: Roman Ogirko, Denis Ellis, Kaveh Hosseini, Brendan Lawton