公开(公告)号：US20200058285A1

公开(公告)日：2020-02-20

申请号：US16539092

申请日：2019-08-13

Applicant: Cirrus Logic International Semiconductor Ltd.

Inventor： Viral PARIKH ,  Jon D. HENDRIX ,  Jeffrey D. ALDERSON ,  Vitaliy SAPOZHNYKOV ,  Nafiseh ERFANIAN SAEEDI ,  Thomas I. HARVEY ,  Robert LUKE

IPC: G10K11/178

Abstract: An integrated circuit for implementing at least a portion of a personal audio device may include an output for providing an output signal to a transducer, wherein the output signal includes a pilot signal, a microphone input for receiving a microphone signal from a microphone indicative of an output of the transducer, and a processing circuit. The processing circuit may be configured to implement a pilot signal control to apply an adjustment to the pilot signal as necessary to maintain the pilot signal at a substantially constant magnitude regardless of proximity of the transducer to a pinna and implement a proximity determination block configured to determine proximity of the transducer to the pinna based on the adjustment.

公开(公告)号：US20210225352A1

公开(公告)日：2021-07-22

申请号：US17143848

申请日：2021-01-07

Applicant: Cirrus Logic International Semiconductor Ltd.

Inventor： Viral PARIKH ,  Jon D. HENDRIX ,  Jeffrey D. ALDERSON ,  Vitaliy SAPOZHNYKOV ,  Nafiseh Erfanian SAEEDI ,  Thomas I. HARVEY ,  Robert LUKE

IPC: G10K11/178

Abstract: An integrated circuit for implementing at least a portion of a personal audio device may include an output for providing an output signal to a transducer, wherein the output signal includes a pilot signal, a microphone input for receiving a microphone signal from a microphone indicative of an output of the transducer, and a processing circuit. The processing circuit may be configured to implement a pilot signal control to apply an adjustment to the pilot signal as necessary to maintain the pilot signal at a substantially constant magnitude regardless of proximity of the transducer to a pinna and implement a proximity determination block configured to determine proximity of the transducer to the pinna based on the adjustment.

公开(公告)号：US20240275180A1

公开(公告)日：2024-08-15

申请号：US18341053

申请日：2023-06-26

Applicant: Cirrus Logic International Semiconductor Ltd.

Inventor： Jon D. HENDRIX ,  Jeffrey D. ALDERSON ,  Aleksey S. KHENKIN

IPC: H02J7/00 ,  G01R31/392

CPC classification number: H02J7/00036 ,  G01R31/392 ,  H02J7/0048 ,  H02J7/005

Abstract: A method of controlling charging of a battery of a portable electronic device, the method comprising: obtaining a usage metric indicative of usage of the battery over its existing lifetime; determining the charge profile for the battery dependent on the usage metric; and controlling charging of the battery based on the determined charge profile.

公开(公告)号：US20240178693A1

公开(公告)日：2024-05-30

申请号：US18458490

申请日：2023-08-30

Applicant: Cirrus Logic International Semiconductor Ltd.

Inventor： Jeffrey D. ALDERSON ,  Jon D. HENDRIX ,  John L. MELANSON

IPC: H02J7/00 ,  H01M10/48 ,  H01M10/615 ,  H01M10/623 ,  H01M10/63 ,  H01M10/6571 ,  H05B6/06

CPC classification number: H02J7/00712 ,  H01M10/48 ,  H01M10/615 ,  H01M10/623 ,  H01M10/63 ,  H01M10/6571 ,  H02J7/0048 ,  H02J7/005 ,  H02J7/0068 ,  H05B6/06 ,  H01M2220/30

Abstract: A system for controlling charging of a battery, the system comprising: charging circuitry for supplying a charging current or voltage to the battery, wherein the charging circuitry is configured to periodically detect an impedance of the battery and to control the charging current or voltage based on the detected impedance.

公开(公告)号：US20220262215A1

公开(公告)日：2022-08-18

申请号：US17728668

申请日：2022-04-25

Applicant: Cirrus Logic International Semiconductor Ltd.

Inventor： Jeffrey D. ALDERSON ,  John L. MELANSON ,  Anthony S. DOY ,  Eric LINDEMANN

IPC: G08B6/00 ,  B06B1/04

Abstract: A system may include an electromagnetic load capable of generating a haptic event and a haptic processor configured to receive at least one first parameter indicative of a desired perception of the haptic event to a user of a device comprising the electromagnetic load, receive at least one second parameter indicative of one or more characteristics of the device, and process the at least one first parameter and the at least one second parameter to generate a driving signal to the electromagnetic load in order to produce the desired perception to the user despite variances in the device that cause an actual perception of the haptic event to vary from the desired perception.

公开(公告)号：US20210125469A1

公开(公告)日：2021-04-29

申请号：US17038068

申请日：2020-09-30

Applicant: Cirrus Logic International Semiconductor Ltd.

Inventor： Jeffrey D. ALDERSON ,  John L. MELANSON ,  Anthony S. DOY ,  Eric LINDEMANN

IPC: G08B6/00 ,  B06B1/04

Abstract: A system may include an electromagnetic load capable of generating a haptic event and a haptic processor configured to receive at least one first parameter indicative of a desired perception of the haptic event to a user of a device comprising the electromagnetic load, receive at least one second parameter indicative of one or more characteristics of the device, and process the at least one first parameter and the at least one second parameter to generate a driving signal to the electromagnetic load in order to produce the desired perception to the user despite variances in the device that cause an actual perception of the haptic event to vary from the desired perception.

公开(公告)号：US20170133000A1

公开(公告)日：2017-05-11

申请号：US15337223

申请日：2016-10-28

Applicant: Cirrus Logic International Semiconductor Ltd.

Inventor： Jon D. HENDRIX ,  Jeffrey D. ALDERSON ,  Chin Huang YONG ,  Ryan A. HELLMAN

IPC: G10K11/178

CPC classification number: G10K11/17833 ,  G10K11/17881 ,  G10K2210/1081 ,  G10K2210/3028 ,  G10K2210/3056 ,  G10K2210/506 ,  H04R1/1083 ,  H04R3/005 ,  H04R2410/05 ,  H04R2460/01

Abstract: An integrated circuit may include an output for providing an output signal to a transducer including both a source audio signal for playback to a listener and an anti-noise signal for countering the effect of ambient audio sounds in an acoustic output of the transducer, an ambient microphone input for receiving an ambient microphone signal indicative of the ambient audio sounds; an error microphone input for receiving an error microphone signal indicative of the output of the transducer and the ambient audio sounds at the transducer; and a processing circuit that implements a feedback path having a feedback response that generates a feedback anti-noise signal from the error microphone signal, wherein a signal gain of the feedback path is a function of the ambient microphone signal, and wherein the anti-noise signal comprises at least the feedback anti-noise signal.