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Synchronized vibration device for haptic feedback

  • US 8,390,218 B2
  • Filed: 03/24/2011
  • Issued: 03/05/2013
  • Est. Priority Date: 06/27/2005
  • Status: Active Grant
First Claim
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1. An apparatus usable in a game controller, the apparatus comprising:

  • a first linear resonant actuator coupled to a housing, the first linear resonant actuator having a first vibration axis and being configured to produce a first vibration force;

    a second linear resonant actuator coupled to the housing, the second linear resonant actuator having a second vibration axis and being configured to produce a second vibration force; and

    means for synchronously vibrating the first and second linear resonant actuators to produce at least one of a combined vibration force on the housing the first and second vibration forces or a combined vibration torque on the housing such that a haptic sensation is provided to a user;

    wherein the means for synchronously vibrating the first and second linear resonant actuators is configured to correct a vibration magnitude for each actuator according to the following equation;


    Acom=Ades+Acor where Ades represents a desired actuator amplitude for a given vibration of that actuator, Acor represents a correction for the given vibration, and Acom represents an actual command amplitude sent to that actuator for the given vibration to correct the vibration magnitude.

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