Patents by Inventor Arash A. Hekmat

Arash A. Hekmat 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).

  • Automatic protection switching and error signal processing coordination apparatus and methods
    Patent number: 7647533
    Abstract: Automatic Protection Switching (APS) and error signal processing coordination apparatus and methods are disclosed. If a communication module that enables communication signals and error signals to be exchanged with a remote communication module is configured in an APS protection group, error signal processing by the communication module is restricted. This prevents Time Division Multiplexing (TDM) T1/E1 Remote Defect Indication (RDI) signal processing, for example, from interfering with Synchronous Optical Network/Synchronous Digital Hierarchy (SONET/SDH) unidirectional One-plus-One APS. Under certain conditions, however, a restricted communication module may be allowed to perform a restricted error processing operation or revert to normal unrestricted error signal processing.
    Type: Grant
    Filed: April 25, 2006
    Date of Patent: January 12, 2010
    Assignee: Alcatel Lucent
    Inventor: Arash A. Hekmat
  • Automatic protection switching and error signal processing coordination apparatus and methods
    Publication number: 20070260940
    Abstract: Automatic Protection Switching (APS) and error signal processing coordination apparatus and methods are disclosed. If a communication module that enables communication signals and error signals to be exchanged with a remote communication module is configured in an APS protection group, error signal processing by the communication module is restricted. This prevents Time Division Multiplexing (TDM) T1/E1 Remote Defect Indication (RDI) signal processing, for example, from interfering with Synchronous Optical Network/Synchronous Digital Hierarchy (SONET/SDH) unidirectional One-plus-One APS. Under certain conditions, however, a restricted communication module may be allowed to perform a restricted error processing operation or revert to normal unrestricted error signal processing.
    Type: Application
    Filed: April 25, 2006
    Publication date: November 8, 2007
    Inventor: Arash Hekmat