公开(公告)号：US10909819B2

公开(公告)日：2021-02-02

申请号：US16400480

申请日：2019-05-01

申请人： GOODIX TECHNOLOGY (HK) COMPANY LIMITED

发明人： Kim Phan Le ,  Jozef Thomas Martinus van Beek

IPC分类号： G08B6/00 ,  G06F3/01

摘要： A controller for a haptic actuator is described. The controller includes a driver which has an output configured to be coupled to a linear resonant actuator in a first mode and a frequency detector having an input configured to be coupled to the haptic actuator in a second mode. The frequency detector is configured to detect a signal generated on the terminals of the haptic actuator in response to an externally applied force and to determine a resonant frequency of the haptic actuator from the generated signal.