Patents by Inventor Jiwon CHA

Jiwon CHA 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).

  • Decoupled disturbance estimator in dual-stage servo controller with loop-shaping filter
    Patent number: 9536553
    Abstract: First and second controllers output respective first and second control signals for first and second plants that respectively correspond to the stages of an actuator. An inverse model of the first plant used to determine a decoupled output of the second plant from a combined output of the first and second plants. A disturbance estimate is subtracted from the second control signal to obtain a disturbance-corrected output. A loop-shaping filter is used between the disturbance corrected output and the second plant.
    Type: Grant
    Filed: February 9, 2016
    Date of Patent: January 3, 2017
    Assignee: SEAGATE TECHNOLOGY LLC
    Inventors: Sangbo Seo, Yunsik Ju, Minsu Jang, Jiwon Cha
  • DISPLAY DEVICE FRAME AND MULTI-DISPLAY DEVICE HAVING THE SAME
    Publication number: 20160316578
    Abstract: A multi-display device includes: a plurality of display panels adjacent to each other; and a first upper frame between the display panels adjacent to each other. The first upper frame may include: a partition wall portion between the display panels adjacent to teach other; and a bezel portion extended from the partition wall portion to overlap front surface edges of each of the display panels adjacent to each other.
    Type: Application
    Filed: October 30, 2015
    Publication date: October 27, 2016
    Inventor: Jiwon CHA