Patents by Inventor Kyoung-Rok Lee

Kyoung-Rok Lee 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).

  • Patent number: 11762471
    Abstract: The present invention relates to a haptic feedback system and, particularly, to a device and a method for controlling an actuator for haptic feedback, the method comprising: a first step of controlling the output of an oscillator such that a clock necessary in the generation of a driving signal for driving an actuator is oscillated at a reference clock frequency; a second step of calculating the resonance frequency of the actuator from a cycle of a BEMF signal according to the driving of the actuator; and a third step of calculating a clock frequency for following the calculated resonance frequency of the actuator so as to newly change and set same to the reference clock frequency, thereby controlling the output of the oscillator.
    Type: Grant
    Filed: June 14, 2019
    Date of Patent: September 19, 2023
    Assignee: DONGWOON ANATECH CO., LTD.
    Inventors: Su Yeol Lee, Cheol Hoei Kim, Kyoung Rok Lee
  • Publication number: 20210263590
    Abstract: The present invention relates to a haptic feedback system and, particularly, to a device and a method for controlling an actuator for haptic feedback, the method comprising: a first step of controlling the output of an oscillator such that a clock necessary in the generation of a driving signal for driving an actuator is oscillated at a reference clock frequency; a second step of calculating the resonance frequency of the actuator from a cycle of a BEMF signal according to the driving of the actuator; and a third step of calculating a clock frequency for following the calculated resonance frequency of the actuator so as to newly change and set same to the reference clock frequency, thereby controlling the output of the oscillator.
    Type: Application
    Filed: June 14, 2019
    Publication date: August 26, 2021
    Applicant: DONGWOON ANATECH CO., LTD.
    Inventors: Su Yeol LEE, Cheol Hoei KIM, Kyoung Rok LEE
  • Patent number: 9349169
    Abstract: A preferred method receives a color image and a corresponding raw depth map from a sensor or system. Unreliable regions are determined in the raw depth map by calculating pixel reliabilities for pixels throughout the depth map. Information is collected from the color image, for corresponding pixels in the unreliable regions of the raw depth map, from neighboring pixels outside the unreliable regions. The depth of pixels in the unreliable regions is updated with information collected from the reliable regions. Robust multi-later filtering is conducted on the adjusted depth map to produce an enhanced depth map.
    Type: Grant
    Filed: May 17, 2013
    Date of Patent: May 24, 2016
    Assignee: The Regents of the University of California
    Inventors: Truong Nguyen, Kyoung-Rok Lee
  • Publication number: 20150071526
    Abstract: A preferred method receives a color image and a corresponding raw depth map from a sensor or system. Unreliable regions are determined in the raw depth map by calculating pixel reliabilities for pixels throughout the depth map. Information is collected from the color image, for corresponding pixels in the unreliable regions of the raw depth map, from neighboring pixels outside the unreliable regions. The depth of pixels in the unreliable regions is updated with information collected from the reliable regions. Robust multi-later filtering is conducted on the adjusted depth map to produce an enhanced depth map.
    Type: Application
    Filed: May 17, 2013
    Publication date: March 12, 2015
    Inventors: Truong Nguyen, Kyoung-Rok Lee