Patents by Inventor Mark F. Rives

Mark F. Rives 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 and method of generating numerically controlled oscillator signals
    Patent number: 6320431
    Abstract: An apparatus according to a preferred embodiment of the present invention includes two memories each storing different octants of a sine (or cosine) waveform. The sine and cosine waveforms may be concurrently generated by alternately accessing each memory in succession. It is unnecessary to access one memory concurrently, so that both waveforms may be concurrently generated without requiring either two accesses to the same memory or a doubled memory size.
    Type: Grant
    Filed: November 1, 1999
    Date of Patent: November 20, 2001
    Assignee: National Semiconductor Corporation
    Inventors: David Potson, Mark F. Rives