Patents by Inventor Joseph Perches

Joseph Perches 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).

  • System and method to insert timestamp information in a protocol neutral manner
    Patent number: 6252891
    Abstract: A method and apparatus for inserting sequence number and timestamp information into a network data packet in a manner which is checksum neutral with respect to a checksum precalculated in the network protocol portion of the data packet. The checksum neutral addition of sequence number and timestamp is accomplished by in addition to adding to the payload portion a sequence number and timestamp, also adding a value which is a modified version of the sequence number and of the time stamp such as an inverse value.
    Type: Grant
    Filed: April 9, 1998
    Date of Patent: June 26, 2001
    Assignee: Spirent Communications, Inc.
    Inventor: Joseph Perches