Patents by Inventor Jeong-Seok Choi

Jeong-Seok Choi 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).

  • Bit rate discrimination device with temperature compensation function
    Publication number: 20020065623
    Abstract: Disclosed is a bit rate discrimination device that accurately discriminates a bit rate regardless of variations in the operating temperature. A photoelectric converter converts an input optical signal into an electric signal, and a bit rate detector detects a bit rate of the optical signal from the electric signal and outputs a discrimination signal indicating the bit rate. A DC amplifier outputs a bit rate detection signal by amplifying the discrimination signal, and a temperature detector detects the operating temperature of the DC amplifier and outputs a temperature signal indicating the detected operating temperature. A variation amplifier outputs a temperature compensation signal by amplifying the voltage level difference between the temperature signal and a predetermined reference signal, so as to cancel variations in an output voltage of the DC amplifier according to the operating temperature.
    Type: Application
    Filed: August 15, 2001
    Publication date: May 30, 2002
    Inventors: Jeong-Seok Choi, Tae-Sung Park, Hee-Chan Doh, Gil-Yong Park, Yun-Je Oh
  • Bit rate control apparatus and method of optical receiver
    Publication number: 20020039040
    Abstract: A bit rate control apparatus and method for an optical receiver capable of avoiding an erroneous determination of the bit rate occurring under the influence of temperature.
    Type: Application
    Filed: September 4, 2001
    Publication date: April 4, 2002
    Inventors: Chan-Youl Kim, Yun-Je Oh, Tae-Sung Park, Jeong-Seok Choi