Patents by Inventor Manal E. Afify

Manal E. Afify 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).

  • Calculation apparatus for performing algebraic and logic computations using iterative calculations and storage of intermediate results
    Patent number: 5528530
    Abstract: A desynchronizer (20) for desynchronizing data stored within synchronous payload envelopes of a synchronous communication protocol such as SONET (Synchronous Optical Network), provides for smoothing the periodically discontinuous clock signal associated with that data after the synchronous communication protocol overhead has been removed. The desynchronizer accommodates for shifts in the position of the payload envelope and hence, the data within the synchronous communication frame as well as adjustments within the data itself due to asynchronous bit stuff information.
    Type: Grant
    Filed: January 12, 1995
    Date of Patent: June 18, 1996
    Assignee: Alcatel Network Systems, Inc.
    Inventors: William E. Powell, William B. Weeber, Manal E. Afify
  • Incremental phase smoothing desynchronizer and calculation apparatus
    Patent number: 5402452
    Abstract: A desynchronizer (20) for desynchronizing data stored within synchronous payload envelopes of a synchronous communication protocol such as SONET (Synchronous Optical Network), provides for smoothing the periodically discontinuous clock signal associated with that data after the synchronous communication protocol overhead has been removed. The desynchronizer accommodates for shifts in the position of the payload envelope and hence, the data within the synchronous communication frame as well as adjustments within the data itself due to asynchronous bit stuff information.
    Type: Grant
    Filed: August 25, 1992
    Date of Patent: March 28, 1995
    Assignee: Alcatel Network Systems, Inc.
    Inventors: William E. Powell, William B. Weeber, Manal E. Afify
  • Data communication bypass apparatus and method
    Patent number: 4964095
    Abstract: A low speed channel bypass apparatus is described for reprovisioning the time slot multiplexer associated with an add/drop multiplexer so as to insure that particular low speed channel(s) within a high speed channel are passed through the add/drop multiplexer via the time slot multiplexer when the operation of an associated network controller is determined to be faulty. The low speed channel bypass apparatus is particularly directed for use with a high speed channel conforming to the synchronous optical network communication standard (SONET). A watchdog timer is used to monitor the performance of the network controller. The watchdog timer when timed out not only prevents further operation of the network controller, but instructs an associated reprovisioning apparatus to instruct the time slot multiplexer to connect through selected channel(s) from the east high speed interface to the west high speed interface.
    Type: Grant
    Filed: May 12, 1989
    Date of Patent: October 16, 1990
    Assignee: Alcatel NA, Inc.
    Inventors: Raymond E. Tyrrell, Manal E. Afify