公开(公告)号：US20210404901A1

公开(公告)日：2021-12-30

申请号：US17079709

申请日：2020-10-26

Applicant: Cirrus Logic International Semiconductor Ltd.

Inventor： Michael A. KOST ,  Tejasvi DAS ,  Marc J. KOBAYASHI ,  Siddharth MARU ,  Rahul GAWDE

IPC: G01L27/00 ,  G01L1/16 ,  G01L1/22 ,  G01L1/14 ,  G06F3/041

Abstract: A method for determining sensor parameters of an actively-driven sensor system may include performing an initialization operation to establish a baseline estimate of the sensor parameters, obtaining as few as three samples of a measured physical quantity versus frequency for the actively-driven sensor system, performing a refinement operation to provide a refined version of the sensor parameters based on the as few as three samples, iteratively repeating the refinement operation until the difference between successive refined versions of the sensor parameters is below a defined threshold, and outputting the refined sensor parameters as updated sensor parameters for the actively-driven sensor system.

公开(公告)号：US20220198227A1

公开(公告)日：2022-06-23

申请号：US17212880

申请日：2021-03-25

Applicant: Cirrus Logic International Semiconductor Ltd.

Inventor： Josh SANZ-ROBINSON ,  Siddharth MARU ,  Rahul GAWDE ,  Jon D. HENDRIX ,  Eric LINDEMANN ,  Pablo PESO PARADA

IPC: G06K9/62 ,  G01L1/14 ,  H03K17/96

Abstract: A classification system for classifying sensor samples in a sensor system, the sensor system comprising N force sensors each configured to output a sensor signal, where N≥1, each sensor sample comprising N sample values from the N sensor signals, respectively, the classification system comprising: a classifier configured, for each of a series of candidate sensor samples, to perform a classification operation based on the N sample values concerned and generate a classification result which labels the candidate sensor sample as indicative of a defined target event, thereby generating a series of classification results corresponding to the series of candidate sensor samples, respectively; a determiner configured to output at least one event determination based on the series of classification results; and a controller configured to control the classifier and/or the determiner based on one or more controller input signals.

公开(公告)号：US20210152174A1

公开(公告)日：2021-05-20

申请号：US16866175

申请日：2020-05-04

Applicant: Cirrus Logic International Semiconductor Ltd.

Inventor： Gregory C. YANCEY ,  Rahul GAWDE ,  Matthew BEARDSWORTH ,  Michael A. KOST ,  Junsong LI

IPC: H03K17/95 ,  H03K17/96 ,  G06F3/01 ,  G06F3/041

Abstract: A method may include receiving an input signal, generating a baseline signal based on the input signal, generating a corrected input signal by subtracting the baseline signal from the input signal, determining a threshold level change of the input signal when the corrected input signal exceeds a level change threshold, and responsive to the threshold level change, updating the baseline signal to the level change threshold.

公开(公告)号：US20210396610A1

公开(公告)日：2021-12-23

申请号：US17080455

申请日：2020-10-26

Applicant: Cirrus Logic International Semiconductor Ltd.

Inventor： Junsong LI ,  Rahul GAWDE ,  Tejasvi DAS ,  Siddharth MARU ,  Eric B. SMITH

IPC: G01L1/26

Abstract: A control method for a user interface system may include receiving an input signal, receiving a temperature signal indicative of a temperature, generating a baseline signal based on at least one among the input signal and the temperature signal, calculating an error signal based on a difference of the input signal and the baseline signal, and modifying the baseline signal based on the error signal.

公开(公告)号：US20180357124A1

公开(公告)日：2018-12-13

申请号：US15984108

申请日：2018-05-18

Applicant: Cirrus Logic International Semiconductor Ltd.

Inventor： Rahul GAWDE ,  Michael A. KOST ,  Alvin C. STORVIK

IPC: G06F11/10 ,  G11C29/52 ,  H03M13/15

CPC classification number: G06F11/1068 ,  G06F11/1012 ,  G11C29/52 ,  H03M13/1575 ,  H03M13/19 ,  H03M13/2906 ,  H03M13/2942 ,  H03M13/2948

Abstract: An error correction code for an array of N words of M bits each may be generated by: (i) for each word of the N words, computing a respective set of checkbits for single-error correction of such word; (ii) computing a set of bit-position-related checkbits comprising a bitwise logical exclusive OR of all of the sets of checkbits for single-error correction of the N words; (iii) for each word of the N words, computing a respective parity for the respective set of checkbits and the word itself in order to form a vector of N parity bits; (iv) computing a set of word-related checkbits for single-error correction of the vector of N parity bits; and (v) computing a cumulative parity bit comprising a parity calculation of the set of bit-position-related checkbits, the set of word-related checkbits, and the vector of N parity bits.