Patents by Inventor Cheon-Sik Sin

Cheon-Sik Sin 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).

  • Vehicle position tracking system via satellite and method thereof
    Patent number: 7603232
    Abstract: A vehicle position information transmitter via satellite, a method thereof, a vehicle position tracking system using the same and a method thereof are provided. The transmitter transmits vehicle position information and vehicle ID to the vehicle position information management center through the vehicle position information relay satellite if a satellite network communication state is good as the result of comparing a satellite signal intensity with a mobile communication signal intensity, or transmits vehicle position information and vehicle ID to the vehicle position information management center through the terrestrial network if a terrestrial network communication state is good as the result of comparing a satellite signal intensity with a mobile communication signal intensity.
    Type: Grant
    Filed: December 8, 2006
    Date of Patent: October 13, 2009
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Cheon-Sik Sin, Seong-Pal Lee
  • Vehicle position tracking system via satellite and method thereof
    Publication number: 20070150193
    Abstract: A vehicle position information transmitter via satellite, a method thereof, a vehicle position tracking system using the same and a method thereof are provided. The transmitter transmits vehicle position information and vehicle ID to the vehicle position information management center through the vehicle position information relay satellite if a satellite network communication state is good as the result of comparing a satellite signal intensity with a mobile communication signal intensity, or transmits vehicle position information and vehicle ID to the vehicle position information management center through the terrestrial network if a terrestrial network communication state is good as the result of comparing a satellite signal intensity with a mobile communication signal intensity.
    Type: Application
    Filed: December 8, 2006
    Publication date: June 28, 2007
    Inventors: Cheon-Sik Sin, Seong-Pal Lee