Patents by Inventor Joung Woo Kim

Joung Woo Kim 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: 7349307
    Abstract: The present invention relates to a method of maintaining an optimal writing power for various recording modes during data recording onto a recording medium. The present method checks a recording speed at a recording position, reads a write strategy set for the checked recording speed, detects a reflected level while recording data with the read write strategy, and changes a level reference for ROPC according to the detected level. Accordingly, a writing power can be kept most optimal even though a recording speed changes during data recording, thereby improving the quality of reproduced signals.
    Type: Grant
    Filed: June 3, 2003
    Date of Patent: March 25, 2008
    Assignee: LG Electronics Inc.
    Inventors: Joung Woo Kim, Cheul Kyung Han
  • Patent number: 6906987
    Abstract: The present invention relates to method and apparatus of recording data onto a disk recording medium in zoned-CLV mode while adjusting recording speed and recording condition adequately at every speed change point between zones. The present invention detects a current recording position while recording data along a track of the disk recording medium, adjusts a recording speed and resets both a write strategy and a base B-level used for running OPC to be suitable for the adjusted recording speed. The present invention can record input data onto a writable disk with the most suitable writing condition at the highest allowable speed.
    Type: Grant
    Filed: August 22, 2002
    Date of Patent: June 14, 2005
    Assignee: Hitachi-LG Data Storage Korea, Inc.
    Inventor: Joung Woo Kim
  • Publication number: 20040001407
    Abstract: The present invention relates to a method of maintaining an optimal writing power for various recording modes during data recording onto a recording medium. The present method checks a recording speed at a recording position, reads a write strategy set for the checked recording speed, detects a reflected level while recording data with the read write strategy, and changes a level reference for ROPC according to the detected level. Accordingly, a writing power can be kept most optimal even though a recording speed changes during data recording, thereby improving the quality of reproduced signals.
    Type: Application
    Filed: June 3, 2003
    Publication date: January 1, 2004
    Inventors: Joung Woo Kim, Cheul Kyung Han
  • Publication number: 20030081517
    Abstract: The present invention relates to method and apparatus of recording data onto a disk recording medium in zoned-CLV mode while adjusting recording speed and recording condition adequately at every speed change point between zones. The present invention detects a current recording position while recording data along a track of the disk recording medium, adjusts a recording speed and resets both a write strategy and a base B-level used for running OPC to be suitable for the adjusted recording speed. The present invention can record input data onto a writable disk with the most suitable writing condition at the highest allowable speed.
    Type: Application
    Filed: August 22, 2002
    Publication date: May 1, 2003
    Inventor: Joung Woo Kim