Patents by Inventor Jinkyu Lim

Jinkyu Lim 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).

  • Adaptive DC offset compensation apparatus and method thereof
    Patent number: 7522902
    Abstract: Provided are a direct current (DC) offset compensation apparatus and a method thereof. A DC offset compensation apparatus comprises an offset detection block detecting a DC offset, an offset compensation block operating according to an output signal of the offset detection block, and an offset compensation amplifying block controlled according to an output signal of the offset compensation block. Particularly, the offset compensation block comprises a counter that counts polarities of DC offsets for a predetermined period, a controller that comprises first to fourth mode units respectively operating fast down-compensation, regular down-compensation, fast up-compensation, and regular up-compensation modes, and a control device that controls the execution of one selected among the first to fourth mode units based on a value counted by the counter, and a register storing data to control the offset compensation amplifying block based on the one mode unit determined by the controller.
    Type: Grant
    Filed: August 23, 2006
    Date of Patent: April 21, 2009
    Assignee: Integrant Technologies Inc.
    Inventors: Jungwan Lee, Jinkyu Lim
  • ADAPTIVE DC OFFSET COMPENSATION APPARATUS AND METHOD THEREOF
    Publication number: 20070046356
    Abstract: Provided are a direct current (DC) offset compensation apparatus and a method thereof. A DC offset compensation apparatus comprises an offset detection block detecting a DC offset, an offset compensation block operating according to an output signal of the offset detection block, and an offset compensation amplifying block controlled according to an output signal of the offset compensation block. Particularly, the offset compensation block comprises a counter that counts polarities of DC offsets for a predetermined period, a controller that comprises first to fourth mode units respectively operating fast down-compensation, regular down-compensation, fast up-compensation, and regular up-compensation modes, and a control device that controls the execution of one selected among the first to fourth mode units based on a value counted by the counter, and a register storing data to control the offset compensation amplifying block based on the one mode unit determined by the controller.
    Type: Application
    Filed: August 23, 2006
    Publication date: March 1, 2007
    Inventors: Jungwan Lee, Jinkyu Lim
  • Circuit and method for DC offset calibration and signal processing apparatus using the same
    Patent number: 6756924
    Abstract: A signal processing apparatus for correcting DC offset in a communication system is provided.
    Type: Grant
    Filed: May 16, 2003
    Date of Patent: June 29, 2004
    Assignee: Integrant Technologies Inc.
    Inventors: Junghwan Lee, Bo-Eun Kim, Jinkyu Lim, Minsu Jeong, Bonkee Kim
  • Circuit and method for DC offset calibration and signal processing apparatus using the same
    Publication number: 20030214423
    Abstract: A signal processing apparatus for correcting DC offset in a communication system is provided.
    Type: Application
    Filed: May 16, 2003
    Publication date: November 20, 2003
    Inventors: Junghwan Lee, Bo-Eun Kim, Jinkyu Lim, Minsu Jeong, Bonkee Kim