Patents by Inventor Van Hilton TRAN

Van Hilton TRAN has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Haptically-enabled system with braking
    Patent number: 10209774
    Abstract: A haptically-enabled system includes an actuator that has a first terminal and a second terminal. The second terminal is coupled to a voltage source, and a first switch is coupled to the first terminal and to ground. A second switch is coupled to the actuator. The second switch is parallel to the actuator.
    Type: Grant
    Filed: December 21, 2015
    Date of Patent: February 19, 2019
    Assignee: IMMERSION CORPORATION
    Inventors: Douglas George Billington, Kaniyalal Shah, Van Hilton Tran
  • HAPTICALLY-ENABLED SYSTEM WITH BRAKING
    Publication number: 20160103492
    Abstract: A haptically-enabled system includes an actuator that has a first terminal and a second terminal. The second terminal is coupled to a voltage source, and a first switch is coupled to the first terminal and to ground. A second switch is coupled to the actuator. The second switch is parallel to the actuator.
    Type: Application
    Filed: December 21, 2015
    Publication date: April 14, 2016
    Inventors: Douglas George BILLINGTON, Kaniyalal SHAH, Van Hilton TRAN
  • Haptically-enabled system with braking
    Patent number: 9218075
    Abstract: A haptically-enabled system includes an actuator that has a first terminal and a second terminal. The second terminal is coupled to a voltage source, and a first switch is coupled to the first terminal and to ground. A second switch is coupled to the actuator. The second switch is parallel to the actuator.
    Type: Grant
    Filed: March 5, 2013
    Date of Patent: December 22, 2015
    Assignee: Immersion Corporation
    Inventors: Douglas George Billington, Kaniyalal Shah, Van Hilton Tran
  • Uniform haptic actuator response with a variable supply voltage
    Patent number: 9196135
    Abstract: A haptic drive circuit includes a voltage input for receiving input power, a gate that compares a desired current level to an actual current level through the actuator, a switch coupled to the gate that interrupts or provides power from the voltage input to the actuator, and a current probe that detects the actual current level through the actuator with an output signal corresponding to the actual current level coupled to the gate. The gate compares the actual current level to the desired current level and causes the switch to interrupt input power when the actual current level is greater than the desired current level or to provide input power when the actual current level is less than or equal to the desired current level. The actual current through the circuit is a haptic signal causing a haptic actuator to generate a haptic effect.
    Type: Grant
    Filed: September 13, 2013
    Date of Patent: November 24, 2015
    Assignee: Immersion Corporation
    Inventors: Kaniyalal Shah, Van Hilton Tran, Douglas George Billington
  • UNIFORM HAPTIC ACTUATOR RESPONSE WITH A VARIABLE SUPPLY VOLTAGE
    Publication number: 20150002278
    Abstract: A haptic drive circuit includes a voltage input for receiving input power, a gate that compares a desired current level to an actual current level through the actuator, a switch coupled to the gate that interrupts or provides power from the voltage input to the actuator, and a current probe that detects the actual current level through the actuator with an output signal corresponding to the actual current level coupled to the gate. The gate compares the actual current level to the desired current level and causes the switch to interrupt input power when the actual current level is greater than the desired current level or to provide input power when the actual current level is less than or equal to the desired current level. The actual current through the circuit is a haptic signal causing a haptic actuator to generate a haptic effect.
    Type: Application
    Filed: September 13, 2013
    Publication date: January 1, 2015
    Applicant: Immersion Corporation
    Inventors: Kaniyalal SHAH, Van Hilton TRAN, Douglas George BILLINGTON
  • HAPTICALLY-ENABLED SYSTEM WITH BRAKING
    Publication number: 20140117887
    Abstract: A haptically-enabled system includes an actuator that has a first terminal and a second terminal. The second terminal is coupled to a voltage source, and a first switch is coupled to the first terminal and to ground. A second switch is coupled to the actuator. The second switch is parallel to the actuator.
    Type: Application
    Filed: March 5, 2013
    Publication date: May 1, 2014
    Applicant: IMMERSION CORPORATION
    Inventors: Douglas George BILLINGTON, Kaniyalal SHAH, Van Hilton TRAN