Patents by Inventor Ezzat Dabbish

Ezzat Dabbish 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).

  • Scrambler key code synchronizer
    Patent number: 4434323
    Abstract: A method for synchronizing the scrambling sequences of communicating scrambler units of a privacy communications system in a reliable and secure manner. The method is particularly adapted for use in noisy or fade prone transmission environments, and permits late entry of authorized third parties to the system. The method utilizes digital sequences interleaved periodically with scrambled analog information to provide reliable synchronization.
    Type: Grant
    Filed: June 29, 1981
    Date of Patent: February 28, 1984
    Assignee: Motorola, Inc.
    Inventors: Stephen N. Levine, Ezzat A. Dabbish, John P. Byrns