Patents by Inventor Erik A. L. Romeijn

Erik A. L. Romeijn 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).

  • Method and apparatus for intrasystem communication links in a transmission system using synchronous data hierarchy
    Patent number: 5457691
    Abstract: The present invention provides an innovative method of transmitting a multiframe signal generated in accordance with the international standard synchronous data hierarchy. Multiframe signals comprising a plurality of standard containers may be transmitted within a network node or system employing an STM-1 frame in a novel manner. Each standard container is provided directly to an STM-1 frame processor. The STM-1 frame processor creates a modified STM-1 frame for transmission. Because the VC-4 path overhead is not generated, the multiframe synchronization (MFS) information for the standard container is written to the STM-1 user definable F1 byte by a link processor. The modified STM-1 is then converted to an optical signal and transmitted to a remote part of the node where the STM-1 is received. The STM-1 overhead is thereafter removed and the contents of the F1 user byte is obtained. The receiving node uses the MFS information to access the data contained within the multiframe signal.
    Type: Grant
    Filed: December 16, 1993
    Date of Patent: October 10, 1995
    Assignee: AT&T Corp.
    Inventor: Erik A. L. Romeijn