Patents by Inventor Isaac Wingfield

Isaac Wingfield 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).

  • Patent number: 7983268
    Abstract: In a cable modem system, increasing or decreasing the rate of an MPEG Transport Stream involves two separate, but related, tasks: 1) incorporating a sufficient number of additional packets (or discarding packets) to make up for the difference in data rates between input and output, and 2) altering timing information (for instance, PCR (Program Clock Reference) values) present in some incoming packets to reflect their altered positions in the output stream. Both of these tasks can be facilitated by the use of a FIFO (First-In, First-Out) structure, through which the data flows.
    Type: Grant
    Filed: October 15, 2009
    Date of Patent: July 19, 2011
    Assignee: Juniper Networks, Inc.
    Inventor: Isaac Wingfield
  • Patent number: 7103047
    Abstract: In a cable modem system, increasing or decreasing the rate of an MPEG Transport Stream involves two separate, but related, tasks: 1) incorporating a sufficient number of additional packets (or discarding packets) to make up for the difference in data rates between input and output, and 2) altering timing information (for instance, PCR (Program Clock Reference) values) present in some incoming packets to reflect their altered positions in the output stream. Both of these tasks can be facilitated by the use of a FIFO (First-In, First-Out) structure, through which the data flows.
    Type: Grant
    Filed: February 6, 2002
    Date of Patent: September 5, 2006
    Assignee: Juniper Networks, Inc.
    Inventor: Isaac Wingfield
  • Patent number: 7003690
    Abstract: A system for redundancy switching of line cards in a communications system. When a line card needs to be replaced or serviced or becomes inoperable, signal traffic is switched to and through a redundant line card. This is achieved by implementing a switching fabric on I/O cards, where the I/O cards carry signal traffic to and from line cards. The switching fabric enables traffic to and from an I/O card servicing the line card to be replaced to instead service the redundant line card.
    Type: Grant
    Filed: March 12, 2002
    Date of Patent: February 21, 2006
    Assignee: Juniper Networks, Inc.
    Inventors: Valentino Liva, Isaac Wingfield
  • Publication number: 20020179720
    Abstract: A system for redundancy switching of line cards in a communications system. When a line card needs to be replaced or serviced or becomes inoperable, signal traffic is switched to and through a redundant line card. This is achieved by implementing a switching fabric on I/O cards, the I/O cards carrying signal traffic to and from line cards. The switching fabric enables traffic to and from and I/O card servicing the line card to be replaced to instead service the redundant line card.
    Type: Application
    Filed: March 12, 2002
    Publication date: December 5, 2002
    Inventors: Valentino Liva, Isaac Wingfield