公开(公告)号：US11150733B2

公开(公告)日：2021-10-19

申请号：US16661323

申请日：2019-10-23

Applicant: Cirrus Logic International Semiconductor Ltd.

Inventor： Tejasvi Das ,  Michael A. Kost ,  Matthew Beardsworth

IPC: G08B6/00 ,  G06F3/01

Abstract: Embodiments described herein relate to methods and apparatuses for providing a haptic output signal to a haptic actuator. A controller comprises an input configured to receive a force sensor signal from at least one force sensor; and a haptic output module configured to generate a haptic output signal for output to a haptic actuator; wherein the haptic output module is configured to: responsive to determining that the force sensor signal indicates that a force level applied to the at least one force sensor exceeds a first threshold, trigger output of the haptic output signal; and during output of the haptic output signal, adjust the haptic output signal based on the force sensor signal.

公开(公告)号：US10948313B2

公开(公告)日：2021-03-16

申请号：US16455462

申请日：2019-06-27

Applicant: Cirrus Logic International Semiconductor Ltd.

Inventor： Michael A. Kost ,  Bruce E. Duewer ,  Tejasvi Das ,  Matthew Beardsworth ,  Anthony S. Doy

IPC: G01D5/14 ,  G01D5/24 ,  G01D5/20 ,  G01D5/16

Abstract: A system may include at least one resistive-inductive-capacitive sensor and a control circuit configured to maintain timing parameters for operation of the at least one resistive-inductive-capacitive sensor and vary at least one of the timing parameters to control a spectrum associated with the at least one resistive-inductive-capacitive sensor, wherein the spectrum comprises one of a sensor activity spectrum of the at least one resistive-inductive-capacitive sensor and a current usage spectrum associated with electrical current delivered to the at least one resistive-inductive-capacitive sensor from a source of electrical energy.

公开(公告)号：US10921159B1

公开(公告)日：2021-02-16

申请号：US16299565

申请日：2019-03-12

Applicant: Cirrus Logic International Semiconductor Ltd.

Inventor： Tejasvi Das ,  Zhong You ,  Siddharth Maru ,  Eric J. King ,  Johann G. Gaboriau ,  Luke Lapointe ,  Matthew Beardsworth

IPC: G01R27/26 ,  G01D5/243 ,  G01R27/28

Abstract: A system may include a first resistive-inductive-capacitive sensor, a second resistive-inductive-capacitive sensor, and a measurement circuit communicatively coupled to the first resistive-inductive-capacitive sensor and the second resistive-inductive-capacitive sensor and configured to measure first phase information associated with the first resistive-inductive-capacitive sensor, measure second phase information associated with the second resistive-inductive-capacitive sensor, and based on the first phase information and the second phase information, determine a displacement of a mechanical member relative to the first resistive-inductive-capacitive sensor.

公开(公告)号：US10860202B2

公开(公告)日：2020-12-08

申请号：US16422543

申请日：2019-05-24

Applicant: Cirrus Logic International Semiconductor Ltd.

Inventor： Hamid Sepehr ,  Pablo Peso Parada ,  Willem Zwart ,  Tom Birchall ,  Michael Allen Kost ,  Tejasvi Das ,  Siddharth Maru ,  Matthew Beardsworth ,  Bruce E. Duewer

IPC: G06F3/0488 ,  G06F3/041 ,  G01L5/162 ,  G01L5/165 ,  G01L5/167 ,  G01L5/164

Abstract: 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.