Patents by Inventor Taing Xu

Taing Xu 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).

  • Apparatus for auto-detecting dialing of a parallel communication device
    Patent number: 5838777
    Abstract: The present invention relates to an auto-detecting dialing communication system used to make the display of caller numbers in host or communication system consist with that of an extension telephone or communication system, especially relates to an extension telephone or communication system that can also display caller numbers.The present invention offer a device for auto-detecting dialing of a parallel communication system, which composes: (1) a FSK decoder for acquiring a dial-in number. (2) an extension telephone detecting device for detecting whether the extension telephone is off hook. (3) a memory for storing the caller telephone numbers. (4) a ring-back signal detecting device for examining whether a ring-back signal is sent back. (5) a Dual Tone Multiple Frequency (DTMF) decoder for acquiring the outgoing call number.
    Type: Grant
    Filed: February 28, 1997
    Date of Patent: November 17, 1998
    Assignee: Inventec Corporation
    Inventors: Jackson Chang, Jeffrey Lai, Taing Xu, James Yin