Patents by Inventor Tom BIRCHALL
Tom BIRCHALL 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: 11972105Abstract: A force sensing system for determining if a user input has occurred, the system comprising: an input channel, to receive an input from at least one force sensor; an activity detection stage, to monitor an activity level of the input from the at least one force sensor and, responsive to an activity level which may be indicative of a user input being reached, to generate an indication that an activity has occurred at the force sensor; and an event detection stage to receive said indication, and to determine if a user input has occurred based on the received input from the at least one force sensor.Type: GrantFiled: October 7, 2022Date of Patent: April 30, 2024Assignee: Cirrus Logic Inc.Inventors: Hamid Sepehr, Pablo Peso Parada, Willem Zwart, Tom Birchall, Michael Allen Kost, Tejasvi Das, Siddharth Maru, Matthew Beardsworth, Bruce E. Duewer
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Patent number: 11733112Abstract: A method of recording measurement data for characterizing a response of a given type of device to an applied force, the given type defining devices of that type as comprising a defined arrangement of a surface and N force sensors of the device concerned, where N?1, each force sensor configured to output a sensor signal, wherein in the defined arrangement the N force sensors are operatively coupled to a defined input region of the surface so as to sense a force applied to that input region, the method comprising: for a specimen device of the given type, performing at least one measurement procedure, each measurement procedure comprising at least one measurement operation, each measurement operation comprising applying a defined force at a corresponding location on the input region of the device concerned and recording measurement data for that device and location based on the sensor signals of the N force sensors of that device.Type: GrantFiled: March 31, 2021Date of Patent: August 22, 2023Assignee: Cirrus Logic Inc.Inventors: Tom Birchall, Hamid Sepehr, Colin Campbell, Jason Kulpe, Chin Yong, Pablo Peso Parada
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Patent number: 11726596Abstract: A controller for use in a device which comprises at least two force sensors in a given arrangement, the controller operable, based on input sensor signals derived from the force sensors, to carry out an arrangement-related operation in which an output sensor signal is generated based on at least two said input sensor signals and the arrangement of the force sensors in the device so that the output sensor signal is dependent on said arrangement.Type: GrantFiled: January 28, 2021Date of Patent: August 15, 2023Assignee: Cirrus Logic, Inc.Inventors: Pablo Peso Parada, Tom Birchall, Hamid Sepehr
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Patent number: 11662259Abstract: A baseline unit for use in a sensor system, the sensor system comprising N force sensors which output N sensor signals, respectively, where N?2, the baseline unit configured to: monitor measures of gradients of the respective sensor signals; and, in dependence upon the measures of the gradients, control a stored baseline setting to control how a baseline signal for at least one of said sensor signals is calculated using a baseline-calculation method, the baseline-calculation method configured by the currently-stored baseline setting.Type: GrantFiled: December 21, 2020Date of Patent: May 30, 2023Assignee: Cirrus Logic, Inc.Inventors: Pablo Peso Parada, Tom Birchall, Hamid Sepehr, Filippo Rossi
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Publication number: 20230052112Abstract: A force sensing system for determining if a user input has occurred, the system comprising: an input channel, to receive an input from at least one force sensor; an activity detection stage, to monitor an activity level of the input from the at least one force sensor and, responsive to an activity level which may be indicative of a user input being reached, to generate an indication that an activity has occurred at the force sensor; and an event detection stage to receive said indication, and to determine if a user input has occurred based on the received input from the at least one force sensor.Type: ApplicationFiled: October 7, 2022Publication date: February 16, 2023Applicant: Cirrus Logic International Semiconductor Ltd.Inventors: Hamid SEPEHR, Pablo PESO PARADA, Willem ZWART, Tom BIRCHALL, Michael Allen KOST, Tejasvi DAS, Siddharth MARU, Matthew BEARDSWORTH, Bruce E. DUEWER
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Patent number: 11515875Abstract: A device, comprising: a pair of force sensors located for detecting a user squeeze input; and a controller operable in a squeeze detection operation to detect the user squeeze input based on a cross-correlation between respective sensor signals originating from the pair of force sensors.Type: GrantFiled: March 4, 2021Date of Patent: November 29, 2022Assignee: Cirrus Logic, Inc.Inventors: Pablo Peso Parada, Tom Birchall, Hamid Sepehr
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Patent number: 11507267Abstract: A force sensing system for determining if a user input has occurred, the system comprising: an input channel, to receive an input from at least one force sensor; an activity detection stage, to monitor an activity level of the input from the at least one force sensor and, responsive to an activity level which may be indicative of a user input being reached, to generate an indication that an activity has occurred at the force sensor; and an event detection stage to receive said indication, and to determine if a user input has occurred based on the received input from the at least one force sensor.Type: GrantFiled: September 10, 2021Date of Patent: November 22, 2022Assignee: Cirrus Logic, Inc.Inventors: Hamid Sepehr, Pablo Peso Parada, Willem Zwart, Tom Birchall, Michael Allen Kost, Tejasvi Das, Siddharth Maru, Matthew Beardsworth, Bruce E. Duewer
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Publication number: 20220316969Abstract: A method of recording measurement data for characterizing a response of a given type of device to an applied force, the given type defining devices of that type as comprising a defined arrangement of a surface and N force sensors of the device concerned, where N?1, each force sensor configured to output a sensor signal, wherein in the defined arrangement the N force sensors are operatively coupled to a defined input region of the surface so as to sense a force applied to that input region, the method comprising: for a specimen device of the given type, performing at least one measurement procedure, each measurement procedure comprising at least one measurement operation, each measurement operation comprising applying a defined force at a corresponding location on the input region of the device concerned and recording measurement data for that device and location based on the sensor signals of the N force sensors of that device.Type: ApplicationFiled: March 31, 2021Publication date: October 6, 2022Applicant: Cirrus Logic International Semiconductor Ltd.Inventors: Tom BIRCHALL, Hamid SEPEHR, Colin CAMPBELL, Jason KULPE, Chin YONG, Pablo PESO PARADA
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Publication number: 20220196497Abstract: A baseline unit for use in a sensor system, the sensor system comprising N force sensors which output N sensor signals, respectively, where N?2, the baseline unit configured to: monitor measures of gradients of the respective sensor signals; and, in dependence upon the measures of the gradients, control a stored baseline setting to control how a baseline signal for at least one of said sensor signals is calculated using a baseline-calculation method, the baseline-calculation method configured by the currently-stored baseline setting.Type: ApplicationFiled: December 21, 2020Publication date: June 23, 2022Applicant: Cirrus Logic International Semiconductor Ltd.Inventors: Pablo PESO PARADA, Tom BIRCHALL, Hamid SEPEHR, Filippo ROSSI
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Patent number: 11269509Abstract: A force sensing system for determining if a user input has occurred, the system comprising: an input channel, to receive an input from at least one force sensor; an activity detection stage, to monitor an activity level of the input from the at least one force sensor and, responsive to an activity level which may be indicative of a user input being reached, to generate an indication that an activity has occurred at the force sensor; and an event detection stage to receive said indication, and to determine if a user input has occurred based on the received input from the at least one force sensor.Type: GrantFiled: October 21, 2020Date of Patent: March 8, 2022Assignee: Cirrus Logic, Inc.Inventors: Hamid Sepehr, Pablo Peso Parada, Willem Zwart, Tom Birchall, Michael Allen Kost, Tejasvi Das, Siddharth Maru, Matthew Beardsworth, Bruce E. Duewer
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Publication number: 20210405840Abstract: A force sensing system for determining if a user input has occurred, the system comprising: an input channel, to receive an input from at least one force sensor; an activity detection stage, to monitor an activity level of the input from the at least one force sensor and, responsive to an activity level which may be indicative of a user input being reached, to generate an indication that an activity has occurred at the force sensor; and an event detection stage to receive said indication, and to determine if a user input has occurred based on the received input from the at least one force sensor.Type: ApplicationFiled: September 10, 2021Publication date: December 30, 2021Applicant: Cirrus Logic International Semiconductor Ltd.Inventors: Hamid SEPEHR, Pablo PESO PARADA, Willem ZWART, Tom BIRCHALL, Michael Allen KOST, Tejasvi DAS, Siddharth MARU, Matthew BEARDSWORTH, Bruce E. DUEWER
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Publication number: 20210194484Abstract: A device, comprising: a pair of force sensors located for detecting a user squeeze input; and a controller operable in a squeeze detection operation to detect the user squeeze input based on a cross-correlation between respective sensor signals originating from the pair of force sensors.Type: ApplicationFiled: March 4, 2021Publication date: June 24, 2021Applicant: Cirrus Logic International Semiconductor Ltd.Inventors: Pablo PESO PARADA, Tom BIRCHALL, Hamid SEPEHR
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Publication number: 20210157436Abstract: A controller for use in a device which comprises at least two force sensors in a given arrangement, the controller operable, based on input sensor signals derived from the force sensors, to carry out an arrangement-related operation in which an output sensor signal is generated based on at least two said input sensor signals and the arrangement of the force sensors in the device so that the output sensor signal is dependent on said arrangement.Type: ApplicationFiled: January 28, 2021Publication date: May 27, 2021Applicant: Cirrus Logic International Semiconductor Ltd.Inventors: Pablo PESO PARADA, Tom BIRCHALL, Hamid SEPEHR
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Patent number: 10992297Abstract: A device, comprising: a pair of force sensors located for detecting a user squeeze input; and a controller operable in a squeeze detection operation to detect the user squeeze input based on a cross-correlation between respective sensor signals originating from the pair of force sensors.Type: GrantFiled: March 29, 2019Date of Patent: April 27, 2021Assignee: Cirrus Logic, Inc.Inventors: Pablo Peso Parada, Tom Birchall, Hamid Sepehr
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Patent number: 10955955Abstract: A controller for use in a device which comprises at least two force sensors in a given arrangement, the controller operable, based on input sensor signals derived from the force sensors, to carry out an arrangement-related operation in which an output sensor signal is generated based on at least two said input sensor signals and the arrangement of the force sensors in the device so that the output sensor signal is dependent on said arrangement.Type: GrantFiled: March 29, 2019Date of Patent: March 23, 2021Assignee: Cirrus Logic, Inc.Inventors: Pablo Peso Parada, Tom Birchall, Hamid Sepehr
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Publication number: 20210034213Abstract: A force sensing system for determining if a user input has occurred, the system comprising: an input channel, to receive an input from at least one force sensor; an activity detection stage, to monitor an activity level of the input from the at least one force sensor and, responsive to an activity level which may be indicative of a user input being reached, to generate an indication that an activity has occurred at the force sensor; and an event detection stage to receive said indication, and to determine if a user input has occurred based on the received input from the at least one force sensor.Type: ApplicationFiled: October 21, 2020Publication date: February 4, 2021Applicant: Cirrus Logic International Semiconductor Ltd.Inventors: Hamid SEPEHR, Pablo PESO PARADA, Willem ZWART, Tom BIRCHALL, Michael Allen KOST, Tejasvi DAS, Siddharth MARU, Matthew BEARDSWORTH, Bruce E. DUEWER
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Patent number: 10860202Abstract: A force sensing system for determining if a user input has occurred, the system comprising: an input channel, to receive an input from at least one force sensor; an activity detection stage, to monitor an activity level of the input from the at least one force sensor and, responsive to an activity level which may be indicative of a user input being reached, to generate an indication that an activity has occurred at the force sensor; and an event detection stage to receive said indication, and to determine if a user input has occurred based on the received input from the at least one force sensor.Type: GrantFiled: May 24, 2019Date of Patent: December 8, 2020Assignee: Cirrus Logic, Inc.Inventors: Hamid Sepehr, Pablo Peso Parada, Willem Zwart, Tom Birchall, Michael Allen Kost, Tejasvi Das, Siddharth Maru, Matthew Beardsworth, Bruce E. Duewer
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Publication number: 20200310579Abstract: A controller for use in a device which comprises at least two force sensors in a given arrangement, the controller operable, based on input sensor signals derived from the force sensors, to carry out an arrangement-related operation in which an output sensor signal is generated based on at least two said input sensor signals and the arrangement of the force sensors in the device so that the output sensor signal is dependent on said arrangement.Type: ApplicationFiled: March 29, 2019Publication date: October 1, 2020Applicant: Cirrus Logic International Semiconductor Ltd.Inventors: Pablo PESO PARADA, Tom BIRCHALL, Hamid SEPEHR
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Publication number: 20200313672Abstract: A device, comprising: a pair of force sensors located for detecting a user squeeze input; and a controller operable in a squeeze detection operation to detect the user squeeze input based on a cross-correlation between respective sensor signals originating from the pair of force sensors.Type: ApplicationFiled: March 29, 2019Publication date: October 1, 2020Applicant: Cirrus Logic International Semiconductor Ltd.Inventors: Pablo PESO PARADA, Tom BIRCHALL, Hamid SEPEHR
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Patent number: 10726857Abstract: Audio signal processing techniques are described which are employed within a circuit of a speech dereverberation system. The amount of data or number of samples input to a reverberation coefficient determination unit is determined, taking into account information about the background noise in the acoustic space and information about energy of reverberant sound in the acoustic space.Type: GrantFiled: February 23, 2018Date of Patent: July 28, 2020Assignee: Cirrus Logic, Inc.Inventor: Tom Birchall