Patents by Inventor Delvan A. Ramey

Delvan A. Ramey 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).

  • Method and apparatus for providing transient suppression in a central processor unit (CPU) phase locked loop clock (PLL) clock signal synthesis circuit
    Patent number: 6104251
    Abstract: The present invention is directed to apparatus and methods for reducing transient signals in phase locked loop (PLL) circuits of central processing units. One aspect of the present invention is directed to a method and apparatus that disables a charge pump circuit in a phase locked loop circuit when a frequency change in the output signal of the PLL circuit is implemented to limit transient signals generated by the PLL. Another aspect of the present invention is directed to a method and apparatus for coordinating a change in divider values for frequency dividers in a PLL of a CPU to limit transient signals from the PLL.
    Type: Grant
    Filed: August 31, 1998
    Date of Patent: August 15, 2000
    Assignee: Compaq Computer Corporation
    Inventors: Delvan A. Ramey, Vincent von Kaenel