Patents by Inventor Sung-Hyen Ryu

Sung-Hyen 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).

  • Rotating type electric sign board and method for driving thereof
    Publication number: 20060158422
    Abstract: A rotary electronic display board and a method for driving the same. The rotary electronic display board switches individual LEDs on or off at their correct positions irrespective of a variation in rotation speed of a drive motor, and correctly and sharply indicates text and image data without using a high-priced encoder, such that it can reduce its own production cost and increase the price competitiveness of a product.
    Type: Application
    Filed: October 23, 2003
    Publication date: July 20, 2006
    Inventor: Sung-Hyen Ryu