Immersion Corporation

Patrice Favreau

Danny A Grant

Juan Manuel Cruz-Hernandez

Pedro Gregorio

Eric Meunier

Robert Lacroix

Juan Manuel Cruz Hernandez

A system that generates a haptic effect generates a drive cycle signal that includes a drive period and a monitoring period. The drive period includes a plurality of drive pulses that are based on the haptic effect. The system applies the drive pulses to a resonant actuator during the drive period and receives a signal from the resonant actuator that corresponds to the position of a mass in the actuator during the monitoring period.

Haptic feedback generation based on resonant frequency

Systems and methods for controlling a resonant device are described. One described method for braking an actuator includes generating a first actuator signal configured to drive the actuator, the first actuator signal having a first frequency approximately resonant to the actuator, and transmitting the first actuator signal to the actuator. The method also includes generating a second actuator signal, having a second frequency approximately 180 degrees out of phase to the first frequency, the second actuator signal configured to cause a braking force on the actuator, and transmitting the second actuator signal to the actuator.

Systems and methods for controlling a resonant device for generating vibrotactile haptic effects

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Mascouche, Canada

Patrice Favreau