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Patent Agency Ranking
公开(公告)号：US20240310920A1
公开(公告)日：2024-09-19
申请号：US18676043
申请日：2024-05-28
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：US20200272239A1
公开(公告)日：2020-08-27
申请号：US16871832
申请日：2020-05-11
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：US20190294247A1
公开(公告)日：2019-09-26
申请号：US16207547
申请日：2018-12-03
Abstract: Embodiments described herein relate to methods and apparatus for driving a haptic transducer with a driving signal. The method comprises estimating, based on a current through the haptic transducer and a terminal voltage across the haptic transducer, a back electromotive force, EMF, voltage representative of a velocity of a mass in the haptic transducer; comparing a phase of a voltage signal derived from the terminal voltage with a phase of the estimated back EMF voltage; and based on the comparison, adjusting a frequency or a phase of an output signal, wherein the driving signal is derived from the output signal, such that a frequency of the driving signal converges to a resonant frequency of the haptic transducer.
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14.发明申请公开(公告)号：US20180302714A1
公开(公告)日：2018-10-18
申请号：US16013545
申请日：2018-06-20
Abstract: In accordance with embodiments of the present disclosure, a method may include using an adaptive filter system to estimate a response of an electrical characteristic of a loudspeaker based on an error between a first electrical parameter of the loudspeaker and a second electrical parameter of the loudspeaker and adding a non-zero delay to the first electrical parameter relative to the second electrical parameter prior to calculation of the error such that the adaptive filter system captures a truncated non-causality of the electrical characteristic.
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15.发明申请公开(公告)号：US20170280240A1
公开(公告)日：2017-09-28
申请号：US15453718
申请日：2017-03-08
CPC classification number: H04R3/02 , H04R3/007 , H04R3/04 , H04R29/001
Abstract: In accordance with embodiments of the present disclosure, a method may include using an adaptive filter system to estimate a response of an electrical characteristic of a loudspeaker based on an error between a first electrical parameter of the loudspeaker and a second electrical parameter of the loudspeaker and adding a non-zero delay to the first electrical parameter relative to the second electrical parameter prior to calculation of the error such that the adaptive filter system captures a truncated non-causality of the electrical characteristic.
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