Patents by Inventor Jang Hyun Ryu

Jang Hyun Ryu 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).

  • System and a method of controlling mobile communication terminals using global positioning system
    Publication number: 20050032510
    Abstract: According to the present invention, a system and a method of controlling mobile communication terminals using global positioning system (GPS) are provided. According to the present invention, the method includes: generating a GPS signal at a GPS signal generator; receiving the GPS signal from the GPS signal generator; extracting control information from the GPS signal; and converting use modes of the mobile communication terminal by using the control information. Accordingly, use modes of the mobile communication terminal located in a place required to restrict some functions of the mobile communication terminal can be collectively and automatically converted without additional costs.
    Type: Application
    Filed: June 15, 2004
    Publication date: February 10, 2005
    Inventors: Jang Hyun Ryu, Gyoun Yon Cho