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Title:
CONSTRUCTION METHOD AND APPARATUS FOR DIRECTIONAL VIBRATION WAVEFORM AND ADJUSTMENT METHOD AND APPARATUS FOR DIRECTIONAL VIBRATION WAVEFORM
Document Type and Number:
WIPO Patent Application WO/2023/071644
Kind Code:
A1
Abstract:
The present application relates to a construction method and apparatus for a directional vibration waveform and an adjustment method and apparatus for a directional vibration waveform. The construction method comprises: constructing a piecewise linear waveform; smoothing the piecewise linear waveform to obtain a continuous curve; performing low-pass filtering on the continuous curve for two times to obtain a first waveform; performing primary differentiation on the first waveform to obtain a second waveform; performing primary differentiation on the second waveform to obtain a third waveform; and adjusting the third waveform according to a preset target intensity, a motor space limitation, and a circuit limitation in sequence to obtain a target directional vibration waveform. By means of the shape difference of a vibration waveform in a positive direction and a negative direction, especially the amplitude difference, good directional haptics is implemented. By means of the present application, the problems of displacement and drive voltage divergence are avoided; the adjustment method for a directional vibration waveform allows for adjustment of a waveform according to actual motor and hardware conditions, and has the feasibility of actual control.

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Inventors:
LIU BING (CN)
LIU YUJIA (CN)
YANG XINFENG (CN)
Application Number:
PCT/CN2022/120706
Publication Date:
May 04, 2023
Filing Date:
September 23, 2022
Export Citation:
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Assignee:
GOERTEK INC (CN)
International Classes:
H02P7/02; G06F3/01; H02P25/032; H02P25/06
Foreign References:
CN114167975A2022-03-11
CN111033441A2020-04-17
CN101213730A2008-07-02
US20180203514A12018-07-19
US20170038841A12017-02-09
US20120194460A12012-08-02
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