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公开(公告)号：US20220026989A1
公开(公告)日：2022-01-27
申请号：US17495277
申请日：2021-10-06
Inventor： Harsha RAO , Rong HU , Carl Lennart STÅHL , Jie SU , Vadim KONRADI , Teemu RAMO , Anthony Stephen DOY
Abstract: An integrated haptic system may include a digital signal processor and an amplifier communicatively coupled to the digital signal processor and integrated with the digital signal processor into the integrated haptic system. The digital signal processor may be configured to receive a force sensor signal indicative of a force applied to a force sensor and generate a haptic playback signal responsive to the force. The amplifier may be configured to amplify the haptic playback signal and drive a vibrational actuator communicatively coupled to the amplifier with the haptic playback signal as amplified by the amplifier.
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公开(公告)号：US20190235629A1
公开(公告)日：2019-08-01
申请号：US16257340
申请日：2019-01-25
Inventor： Rong HU , Jie SU , Harsha RAO
Abstract: A method for quantifying fidelity of a haptic signal may include receiving a response signal indicative of a vibrational response of a vibrational transducer to a haptic playback waveform driven to the vibrational transducer, perceptually filtering the response signal to obtain human haptic-perceptible components of the response signal, and quantifying fidelity of the haptic playback waveform based on at least one quantitative characteristic of the human haptic-perceptible components of the response signal.
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公开(公告)号：US20180014121A1
公开(公告)日：2018-01-11
申请号：US15547850
申请日：2016-02-01
Inventor： Jason William LAWRENCE , Roberto NAPOLI , Roger SERWY , Jie SU , Stefan WILLIAMS , Rong HU , Firas AZRAI
IPC: H04R3/00 , G10L21/0272 , H04R3/04 , H04R29/00
CPC classification number: H04R3/007 , G10L21/0272 , H04R3/04 , H04R29/001 , H04R2430/01
Abstract: This application describes methods and apparatus for loudspeaker protection. A loudspeaker protection system (100) is described having a first frequency band-splitter (102) for splitting an input audio signal (Vin) into a plurality of audio signals (v1, v2 . . . , vn) in different respective frequency bands (ω1, ω2 . . . , ωn). A first gain block (103) is configured to apply a respective frequency band gain (g1, g2 . . . , g3) to each of the audio signals in the different respective frequency bands and a gain controller (107, 108, 109) is provided for controlling the respective band gains. A displacement modeller (104, 105) determines a plurality of displacement signals (x1, x2 . . . , xn) based on the input audio signal (Vin) and a displacement model (104a) where each displacement signal corresponds to a modelled cone displacement for the loudspeaker for one of said different respective frequency bands. The gain controller (107, 108, 109) is configured to control the respective frequency band gains based on the plurality of displacement signals.
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公开(公告)号：US20190295755A1
公开(公告)日：2019-09-26
申请号：US16113765
申请日：2018-08-27
Inventor： Vadim KONRADI , Carl Lennart STÅHL , Rong HU
Abstract: A method may include generating an electrical drive waveform associated with a target actuator by stretching or compressing a reference drive waveform associated with a reference actuator in a time domain of the reference drive waveform in accordance with a time adjustment factor, wherein the time adjustment factor is determine based on a difference between a resonant frequency of the target actuator and a resonant frequency of the reference actuator. The same or another method may include generating an electrical drive waveform associated with a target actuator by increasing or decreasing an amplitude of a reference drive waveform associated with a reference actuator in accordance with an amplitude adjustment factor, wherein the amplitude adjustment factor is determined based on a difference between a resonant frequency of the target actuator and a resonant frequency of the reference actuator.
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公开(公告)号：US20180014120A1
公开(公告)日：2018-01-11
申请号：US15547836
申请日：2016-02-01
Inventor： Jason William LAWRENCE , Roberto NAPOLI , Roger David SERWY , Jie SU , Stefan WILLIAMS , Rong HU , Firas AZRAI
IPC: H04R3/00 , G10L21/0272 , H04R3/04 , H04R29/00
CPC classification number: H04R3/007 , G10L21/0272 , H04R3/04 , H04R29/001 , H04R2430/01
Abstract: This application describes methods and apparatus for loudspeaker protection. A loudspeaker protection system (1100) is described having a first frequency band-splitter (102) for splitting an input audio signal (Vin) into a plurality of audio signals (v1, v2 . . . ,vn) in different respective frequency bands (ω1, ω2 . . . ωη). A first gain block (103) is configured to apply a respective frequency band gain (gt1, gt2 . . . ,gt3) to each of the audio signals in the different respective frequency bands and a gain controller (109; 1101) is provided for controlling the respective band gains. A thermal controller (1101) determines, for each of a plurality of the different respective frequency bands, a power dissipation for the loudspeaker in that frequency band and also determines a respective thermal gain setting based on the determined power dissipation for that frequency band. The gain controller is configured to control the respective frequency band gains based on the thermal gain settings.
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Patent Agency Ranking
公开(公告)号：US20230161413A1
公开(公告)日：2023-05-25
申请号：US18094680
申请日：2023-01-09
Inventor： Harsha RAO , Rong HU , Carl Lennart STÅHL , Jie SU , Vadim KONRADI , Teemu RAMO , Anthony Stephen DOY
CPC classification number: G06F3/016 , G06F3/01 , G06F3/0414 , G06F3/0416 , G06F3/044
Abstract: An integrated haptic system may include a digital signal processor and an amplifier communicatively coupled to the digital signal processor and integrated with the digital signal processor into the integrated haptic system. The digital signal processor may be configured to receive a force sensor signal indicative of a force applied to a force sensor and generate a haptic playback signal responsive to the force. The amplifier may be configured to amplify the haptic playback signal and drive a vibrational actuator communicatively coupled to the amplifier with the haptic playback signal as amplified by the amplifier.
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公开(公告)号：US20190340895A1
公开(公告)日：2019-11-07
申请号：US16280256
申请日：2019-02-20
Inventor： Harsha RAO , Kyle WILKINSON , Rong HU
IPC: G08B6/00
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.
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公开(公告)号：US20180321748A1
公开(公告)日：2018-11-08
申请号：US15722128
申请日：2017-10-02
Inventor： Harsha RAO , Rong HU , Carl Lennart STÅHL , Jie SU , Vadim KONRADI , Teemu RAMO , Anthony Stephen Doy
Abstract: An integrated haptic system may include a digital signal processor and an amplifier communicatively coupled to the digital signal processor and integrated with the digital signal processor into the integrated haptic system. The digital signal processor may be configured to receive a force sensor signal indicative of a force applied to a force sensor and generate a haptic playback signal responsive to the force. The amplifier may be configured to amplify the haptic playback signal and drive a vibrational actuator communicatively coupled to the amplifier with the haptic playback signal as amplified by the amplifier.
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公开(公告)号：US20190296674A1
公开(公告)日：2019-09-26
申请号：US16207340
申请日：2018-12-03
Inventor： Marco JANKO , Harsha RAO , Carl STÅHL , Rong HU
Abstract: According to embodiments described herein, there is provided methods and apparatus for providing a driving signal to a transducer, wherein the driving signal is output by an amplifier. A method comprises receiving an indication of a voltage and a current of the driving signal; based on an electrical model of the transducer and the voltage and the current of the driving signal, estimating an estimated electrical response of the transducer representative of movement of a mass in the transducer; comparing the estimated electrical response to a desired electrical response; and controlling the driving signal based on the comparison.
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公开(公告)号：US20170325024A1
公开(公告)日：2017-11-09
申请号：US15149987
申请日：2016-05-09
IPC: H04R3/00
CPC classification number: H04R3/007 , H04R29/001
Abstract: In accordance with embodiments of the present disclosure, a controller configured to be coupled to an audio transducer, may be further configured to receive an audio input signal, calculate a displacement compensation signal in a displacement domain of the audio transducer based on the audio input signal, convert the displacement compensation signal from the displacement domain into a voltage compensation signal in a voltage domain, and apply the voltage compensation signal to the audio input signal, or a derivative thereof, to minimize overexcursion of the audio transducer.
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