Patents by Inventor Chang Maochuan

Chang Maochuan 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).

  • Signal switching circuit
    Patent number: 5565804
    Abstract: A signal switching circuit is provided to output signal switching between a first and a second input signal. The circuit includes a first analog switch transistor, a first switch transistor, a second analog switch transistor, a second switch transistor and a third switch transistor. The interference between the first input signal and the second input signal is reduced to a possible minimum through the invention.
    Type: Grant
    Filed: June 30, 1995
    Date of Patent: October 15, 1996
    Assignee: Acer Peripherals, Inc.
    Inventors: Chang Maochuan, Cheng Ya-an