Patents by Inventor R. Franklin Quick

R. Franklin Quick 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).

  • Methods and apparatus for detecting cellular digital packet data (CDPD)
    Patent number: 5719902
    Abstract: Disclosed herein are methods and apparatus for detecting the presence of a CDPD carrier in a channel of a cellular system (although the invention is broadly applicable to detecting a specific kind of carrier associated with an "overlay" system, wherein an "overlay" system is one that shares the frequency allocation of another system on a non-cooperating basis). This specification describes a spectral estimation technique for detection of a CDPD carrier. In addition, this specification describes an MMSE (minimum mean-squared error) method that improves on the spectral estimation method.
    Type: Grant
    Filed: April 18, 1995
    Date of Patent: February 17, 1998
    Assignee: Pacific Communication Sciences, Inc.
    Inventors: R. Franklin Quick, Kumar Balachandran, Keith Smith