Patents by Inventor Seong-Wen Lee

Seong-Wen 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).

  • Apparatus for recovering SECAM chrominance signal and method thereof
    Publication number: 20080049140
    Abstract: An apparatus for recovering a chrominance signal from a sequential color with memory (SECAM) composite video baseband signal (CVBS), and more particularly, an apparatus and method of recovering a SECAM chrominance signal to simplify a circuit configuration of a frequency demodulator since a phase different calculation scheme is simplified is provided. The apparatus for recovering a chrominance signal from a CVBS includes: a frequency demodulator calculating a phase difference between neighboring samples by using an arctangent approximation from an input signal; and a direct current (DC) compensation unit eliminating a DC offset from the calculated phase difference, wherein the phase difference corresponds to the chrominance signal.
    Type: Application
    Filed: August 17, 2007
    Publication date: February 28, 2008
    Applicant: NEXTCHIP CO., LTD.
    Inventors: Hyo-Ju Kim, Seong-Wen Lee, Do-Gyun Kim, Yun-Sung Wang, Ji-Hoon Jang