公开(公告)号：US11069206B2

公开(公告)日：2021-07-20

申请号：US16280256

申请日：2019-02-20

Applicant: Cirrus Logic International Semiconductor Ltd.

Inventor： Harsha Rao ,  Kyle Wilkinson ,  Rong Hu

IPC: G08B6/00 ,  G06F3/01

Abstract: Embodiments described herein provide methods and apparatus for outputting a haptic signal to a haptic transducer. A method comprises storing a representation of a part of the haptic signal comprising a first information point indicating a first amplitude and at least one first frequency of the part of the haptic signal at a first time, wherein the representation is associated with a user experience; responsive to receiving an indication of occurrence of the user experience, determining the haptic signal based on the first information point such that the part of the haptic signal has the first amplitude and the at least one first frequency at the first time. The method may further comprise outputting the haptic signal to the haptic transducer.

公开(公告)号：US11037414B2

公开(公告)日：2021-06-15

申请号：US16280256

申请日：2019-02-20

Applicant: Cirrus Logic International Semiconductor Ltd.

Inventor： Harsha Rao ,  Kyle Wilkinson ,  Rong Hu

IPC: G08B6/00 ,  G06F3/01

Abstract: Embodiments described herein provide methods and apparatus for outputting a haptic signal to a haptic transducer. A method comprises storing a representation of a part of the haptic signal comprising a first information point indicating a first amplitude and at least one first frequency of the part of the haptic signal at a first time, wherein the representation is associated with a user experience; responsive to receiving an indication of occurrence of the user experience, determining the haptic signal based on the first information point such that the part of the haptic signal has the first amplitude and the at least one first frequency at the first time. The method may further comprise outputting the haptic signal to the haptic transducer.

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：US11641546B2

公开(公告)日：2023-05-02

申请号：US16715261

申请日：2019-12-16

Applicant: Cirrus Logic International Semiconductor Ltd.

Inventor： Kok Chin Chang ,  Marco Janko ,  Kyle Wilkinson

IPC: H04R3/04 ,  G06F3/041 ,  G06F3/01

Abstract: A method for minimizing post-playback oscillation during playback of a haptic playback waveform to a haptic transducer may include determining whether a frequency response of the haptic playback waveform has a notch with a notch frequency at approximately a resonant frequency of the haptic transducer and, responsive to the notch frequency differing from the resonant frequency, modifying the haptic playback waveform for playback to the haptic transducer by shifting the notch frequency to approximately the resonant frequency.