Patents by Inventor Choong-woong Lee

Choong-woong 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).

  • De-blocking method and apparatus
    Patent number: 6728414
    Abstract: A de-blocking method and apparatus in which a block classifier determines whether the received decoded image is a planar surface or a complex surface. A first correction value calculator calculates correction values for block boundary pixels using a first filtering coefficient when the decoded image is a planar surface, an interpolator provides first correction values for pixels on the block boundary, and a second correction value calculator calculates second correction values for some block boundary pixels using a second filtering coefficient when the decoded image is a complex surface. A corrector provides a corrected image by correcting the received decoded image using the first correction values when the received decoded image is a planar surface, or using the second correction values when the received decoded image is a complex surface.
    Type: Grant
    Filed: July 13, 1999
    Date of Patent: April 27, 2004
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Joon-ho Chang, Jeong-kwon Kim, Choong-woong Lee