公开(公告)号：US12254762B2

公开(公告)日：2025-03-18

申请号：US18095305

申请日：2023-01-10

Applicant: Cirrus Logic International Semiconductor Ltd.

Inventor： Anil Lal ,  Hamid Sepehr ,  Aleksey S. Khenkin ,  Filippo Rossi ,  Vadim Konradi ,  Marco A. Janko ,  Chin H. Yong ,  Colin Campbell

IPC: G08B6/00

Abstract: A method for determining and mitigating over-excursion of an internal mass of an under-damped electromechanical transducer may include transforming an electrical playback signal to an estimated displacement signal, based on the estimated displacement signal, determining an estimated over-excursion of the internal mass responsive to the electrical playback signal, and limiting, based on the estimated over-excursion, an electrical driving signal derived from the electrical playback signal and for driving the electromechanical transducer in order to mitigate over-excursion of the internal mass.

公开(公告)号：US20240238842A1

公开(公告)日：2024-07-18

申请号：US18098396

申请日：2023-01-18

Applicant: Cirrus Logic International Semiconductor Ltd.

Inventor： Marco Janko ,  Jorge Reynaga ,  Chin Yong ,  Eric Lindemann ,  Emmanuel Marchais ,  Hamid Sepehr ,  Vadim Konradi ,  Michael Kurek ,  Filippo Rossi ,  Anil Lal ,  Aleksey Khenkin

IPC: B06B1/02 ,  H04R29/00

CPC classification number: B06B1/0276 ,  H04R29/00 ,  B06B2201/40

Abstract: A method includes applying a high frequency signal to an electromechanical actuator and measuring a first response of the electromechanical actuator to the high frequency signal, estimating electrical parameters of the electromechanical actuator based on the first response, applying a low frequency broadband signal to the electromechanical actuator and measuring a second response of the electromechanical actuator to the low frequency broadband signal, and estimating mechanical parameters of the electromechanical actuator based on the second response and the estimated electrical parameters.

公开(公告)号：US12159528B2

公开(公告)日：2024-12-03

申请号：US18080900

申请日：2022-12-14

Applicant: Cirrus Logic International Semiconductor Ltd.

Inventor： Marco A. Janko ,  Filippo Rossi ,  Hamid Sepehr ,  Kyle Wilkinson ,  Emmanuel A. Marchais ,  Vadim Konradi ,  Anil Lal ,  Aleksey S. Khenkin ,  Chin Huang Yong

IPC: G08B6/00

Abstract: A method for determining and mitigating over-excursion of an internal mass of an electromechanical transducer may include measuring a sensed signal associated with the electromechanical transducer in response to a driving signal driven to the electromechanical transducer, determining a non-linearity value based on the sensed signal, mapping the non-linearity value to a probability of over-excursion of the internal mass, and applying a gain to a signal path configured to generate the driving signal based on the probability.

公开(公告)号：US12106659B2

公开(公告)日：2024-10-01

申请号：US17542571

申请日：2021-12-06

Applicant: Cirrus Logic International Semiconductor Ltd.

Inventor： Anil Lal ,  Michael Kurek ,  Hamid Sepehr

IPC: G08B6/00

CPC classification number: G08B6/00

Abstract: A haptics signal generator configured to generate a haptics signal for driving a haptics transducer by amplitude modulating and frequency modulating a carrier signal based on an input audio signal.