Patents by Inventor Douglas Paul Dobson

Douglas Paul Dobson 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).

  • System and method for multiple access short message communications
    Patent number: 5862132
    Abstract: The present invention describes a communications system that utilizes frequency division multiple access (FDMA), code division multiple access (CDMA), and time division multiple access (TDMA) techniques for providing efficient use of frequency spectrum while supporting a large number of transmitters/users (2-6). Many users of the communications system share a common frequency band, but each transmit their respective message bursts (50) at different and specific times via a TDMA technique. To facilitate synchronization of the TDMA technique, each transmitter of the system is synchronized to a common timing reference (1) thereby abating the need to maintain synchronization between the transmitters (2-6) and receivers (8-12) of the system.
    Type: Grant
    Filed: April 22, 1996
    Date of Patent: January 19, 1999
    Assignee: Motorola, Inc.
    Inventors: Scott David Blanchard, Kenneth Solomon Wreschner, Douglas Paul Dobson, Marc David Brack