Patents by Inventor Yihua E. Chang

Yihua E. Chang 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).

  • High-speed programmable timing generator
    Patent number: 4608706
    Abstract: A high-speed programmable timing generator in which a continuously cycling binary count is compared with an input data word. Predetermined bits, starting from the highest-order end of the counter, can be selectively inhibited to effectively vary the cycle period of the counter. The digital word with which the output of the counter is compared can be varied to set the reference phase of the output timing pulse stream. Further, fine delay adjustment of the phase of the output timing pulse stream is effected by a controllable phase-locked loop.
    Type: Grant
    Filed: July 11, 1983
    Date of Patent: August 26, 1986
    Assignee: International Business Machines Corporation
    Inventors: Yihua E. Chang, Lawrence J. Grasso, Algirdas J. Gruodis, Carroll E. Morgan