Patents by Inventor Ching-Yun Tsai

Ching-Yun Tsai 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).

  • Wireless video/audio signal or data transmission device and its remote control circuit
    Patent number: 5161021
    Abstract: A wireless video signal remote control system utilizes audio and video transmission at the FCC designated frequency of 902-928 MHz, but the carrier signals are AM modulated. Control signals are sent over a power line rather than using the wireless transmission antennas.
    Type: Grant
    Filed: December 18, 1990
    Date of Patent: November 3, 1992
    Inventor: Ching-Yun Tsai