Patents by Inventor Cha-Hum Chen

Cha-Hum Chen 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).

  • Touchpad remote controller and control method by using the same
    Publication number: 20080024682
    Abstract: A remote controller has a touchpad for users to operate thereon, so as to remotely control an under controlled apparatus. By recognizing the features of the operations on the touchpad, the remote controller could determine corresponding control signals to command the under controlled apparatus to start up and end off functions, adjust parameters, or input alphanumeric characters.
    Type: Application
    Filed: July 27, 2007
    Publication date: January 31, 2008
    Inventor: Cha-Hum Chen