Patents by Inventor Lawrence M. Mohl

Lawrence M. Mohl 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).

  • TDM/FDM communication system supporting both TDM and FDM-only communication units
    Patent number: 5038342
    Abstract: An RF communications system that can determine when a requesting subscriber unit comprises a TDM capable unit, and when it doesn't. Channel assignments are based upon this determination. The system also includes repeaters that can translate communications in a TDM format as transmitted by a TDM capable unit into non-TDM format for subsequent transmission to a non-TDM capable unit, and vice versa.
    Type: Grant
    Filed: January 23, 1989
    Date of Patent: August 6, 1991
    Assignee: Motorola, Inc.
    Inventors: Kenneth J. Crisler, Lawrence M. Mohl, Michael D. Kotzin, Anthony P. Van den Heuvel
  • Spectrally efficient method for communicating an information signal
    Patent number: 4979188
    Abstract: According to the invention, an information signal, such as a information signal, is sampled, quantized and processed digitally through an information encoder. Digitally processed samples produced by the encoder are modulated onto a communication channel to create channel symbols having a magnitude of modulation proportional to a characteristic of a respective digitally processed sample. Both a radio frequency (RF) transmission embodiment, and a wireline embodiment are provided. In a final aspect of the present invention, encryption is provided to ensure communication privacy.
    Type: Grant
    Filed: April 29, 1988
    Date of Patent: December 18, 1990
    Assignee: Motorola, Inc.
    Inventors: Michael D. Kotzin, Anthony P. van den Heuvel, Kenneth J. Crisler, Bradley M. Hiben, Lawrence M. Mohl, Mark R. Poulin
  • Multiple control slot TDM/FDM communication system
    Patent number: 4942570
    Abstract: A communication system that provides TDM and FDM communications between communication units. At least two control slots are provided in each TDM frame window to provide communication control information such as channel assignment information.
    Type: Grant
    Filed: January 23, 1989
    Date of Patent: July 17, 1990
    Assignee: Motorola, Inc.
    Inventors: Michael D. Kotzin, Kenneth J. Crisler, Lawrence M. Mohl, Theodore Saltzberg, Daehyoung Hong, Anthony P. Van den Heuvel