HAPTIC SYSTEM WITH INCREASED LRA BANDWIDTH

摘要

A method of generating a haptic effect on a linear resonance actuator (“LRA”) having a resonant frequency includes receiving a haptic effect signal for the haptic effect, where the haptic effect comprises a desired frequency that is off-resonant from the LRA. The method further includes generating a first sine wave at the desired frequency and generating a second sine wave at or near the resonant frequency. The method further includes combining the first sine wave and the second sine wave to generate a drive signal.

主权项

1. A method of generating a vibratory haptic effect by a linear resonance actuator (LRA) having a resonant frequency, the method comprising:
receiving an input haptic effect signal comprising a desired input frequency; determining whether the desired input frequency is below or above a transition point frequency; when the desired input frequency is below the transition point frequency, generating a first output haptic effect signal by enveloping the input haptic effect signal at the resonant frequency with a sine wave at the desired input frequency; and applying the first output haptic effect signal to the LRA to generate the vibratory haptic effect.