Patents by Inventor Joon W. Bang

Joon W. Bang 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 Y/C separation with artifacts removal via switchable trap in luminance channel
    Patent number: 5367342
    Abstract: An apparatus for separating a luminance signal and a chrominance signal from a video signal includes a subtractor for obtaining a difference (first subtract signal) between the original composite video signal and a one line-delayed video signal and a difference (second subtract signal) between the one line-delayed video signal and a two line-delayed video signal, an adder for adding the first subtract signal to the second subtract signal, a line correlation detector for detecting a correlation between adjacent horizontal scanning lines, and a multiplexer for selecting one of the first subtract signal, the second subtract signal, an add signal from the adder, and an output signal from a band pass filter which band pass-filters the one line-delayed video signal, in response to an output signal from the line correlation detector whereby the apparatus provides improved resolution, thereby assuring excellent picture quality.
    Type: Grant
    Filed: April 9, 1992
    Date of Patent: November 22, 1994
    Assignee: Gold Star Co., Ltd.
    Inventor: Joon W. Bang