Patents by Inventor Hwan Sang LEE

Hwan Sang 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).

  • METHOD AND APPARATUS FOR EXTRACTING IONOSPHERIC TRACE
    Publication number: 20150192670
    Abstract: A method and apparatus for extracting an ionospheric trace are provided. The trace extraction method includes: searching for a signal data having maximum strength among signal data displayed on an ionogram of the ionosphere; selecting the point where the signal data having maximum strength is placed as a first point; extracting the trace on the right side of the first point while increasing frequency of the signal data; and extracting the trace on the left side of the first point while decreasing the frequency.
    Type: Application
    Filed: June 19, 2014
    Publication date: July 9, 2015
    Inventors: Jin Ho JO, Moonhee YOU, Cheol Oh JEONG, Yong-Min LEE, Hwan Sang LEE