Patents by Inventor Paul A. Gresham

Paul A. Gresham 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).

  • Fast digital signal processor interface using data interchanging between two memory banks
    Patent number: 5649148
    Abstract: A digital signal processor (DSP) interface comprised of a memory containing a pair of memory banks, apparatus for storing an input signal in a first one of the memory banks, apparatus for storing a signal from the DSP in a second one of the memory banks, apparatus for switching the content of the two memory banks, apparatus for reading either or both of the two memory banks to a first and a second memory output respectively, whereby the input signal modified or replaced by the signal from the DSP is output from the memory.
    Type: Grant
    Filed: May 21, 1993
    Date of Patent: July 15, 1997
    Assignee: Mitel Corporation
    Inventor: Paul A. Gresham