Patents by Inventor Joohong Choi

Joohong Choi 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).

  • Display system including plurality of displays and image output method thereof
    Patent number: 11948533
    Abstract: A display system according to an embodiment disclosed in the disclosure includes a sink device including a plurality of displays, the plurality of displays including a display having a high refresh rate compared to at least one other display having a low refresh rate among the plurality of displays and a source device operably coupled to the plurality of displays, and the source device renders the image data based on the display having the high refresh rate among the plurality of displays, and transmits at least a portion of the rendered image data to the plurality of displays in synchronization with respective refresh rates of the at least one other display. Additional various embodiments identified through the specification are possible.
    Type: Grant
    Filed: February 4, 2022
    Date of Patent: April 2, 2024
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Wonseob Choi, Joohong Lee, Sangwon Chae, Chanmin Park
  • Electrical duplex to optical conversion
    Patent number: 9553634
    Abstract: A device converts between electrical duplex and optical signals. In one embodiment, such a device includes an echo cancellation circuit that reduces the echo from an incoming optical signal.
    Type: Grant
    Filed: December 8, 2014
    Date of Patent: January 24, 2017
    Assignee: Lattice Semiconductor Corporation
    Inventors: Joohong Choi, Kihong Kim, Gyudong Kim, Chandlee B. Harrell
  • Electrical Duplex to Optical Conversion
    Publication number: 20160164572
    Abstract: A device converts between electrical duplex and optical signals. In one embodiment, such a device includes an echo cancellation circuit that reduces the echo from an incoming optical signal.
    Type: Application
    Filed: December 8, 2014
    Publication date: June 9, 2016
    Inventors: Joohong Choi, Kihong Kim, Gyudong Kim, Chandlee B. Harrell
  • Electrical Connector with Optical Channel
    Publication number: 20160091669
    Abstract: A hybridized connector is based on an existing standard for an electrical connector but also provides an optical channel for increased data rate.
    Type: Application
    Filed: September 30, 2014
    Publication date: March 31, 2016
    Inventors: Neil Bullock, Kihong Kim, Joohong Choi