Patents by Inventor Ho-Yen Chang

Ho-Yen Chang 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).

  • Enhanced virtual circuit allocation methods and systems for multi-stage switching elements
    Patent number: 7515594
    Abstract: A system and method for routing data, which includes a switching node, including a plurality of switching elements and plurality of links coupled to the switching elements for providing a routing path for the data; and a virtual circuit identification algorithm in communication with the switching node for providing an even distribution of data traffic through the switching node, wherein the virtual circuit identification algorithm determines a path selection formula.
    Type: Grant
    Filed: July 15, 2005
    Date of Patent: April 7, 2009
    Assignee: Telefonaktiebolaget L M Ericsson (Publ)
    Inventor: Ho-Yen Chang
  • Methods and system of virtual circuit identification based on bit permutation of link numbers for multi-stage elements
    Patent number: 7336658
    Abstract: A method and system of assigning paths through an interconnection network (100) consisting of a plurality of switching elements (102:165) and a plurality of links coupling the switching elements (102:165) are provided. Physical restrictions of the interconnection network (100) are used to arrive at a logical representation of an architecture of the interconnection network (100). Traffic patterns of the interconnection network (100) are determined to balance the data traffic through the links coupling the switching elements (102:165). The logical representation and traffic patterns of the interconnection network (100) are used to setup virtual channel identifiers that determine paths through the switching elements and links so that data traffic is more evenly distributed through the interconnection network (100).
    Type: Grant
    Filed: January 2, 2002
    Date of Patent: February 26, 2008
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Ho-Yen Chang, Tyan-Shu Jou, Ritesh Ahuja, James da Silva
  • Enhanced virtual circuit allocation methods and systems for multi-stage switching elements
    Publication number: 20070014299
    Abstract: A system and method for routing data, which includes a switching node, including a plurality of switching elements and plurality of links coupled to the switching elements for providing a routing path for the data; and a virtual circuit identification algorithm in communication with the switching node for providing an even distribution of data traffic through the switching node, wherein the virtual circuit identification algorithm determines a path selection formula.
    Type: Application
    Filed: July 15, 2005
    Publication date: January 18, 2007
    Inventor: Ho-Yen Chang
  • Methods and system of virtual circuit identification based on bit permutation of link numbers for multi-stage elements
    Publication number: 20030074468
    Abstract: A method and system of assigning paths through an interconnection network (100) consisting of a plurality of switching elements (102:165) and a plurality of links coupling the switching elements (102:165) are provided. Physical restrictions of the interconnection network (100) are used to arrive at a logical representation of an architecture of the interconnection network (100). Traffic patterns of the interconnection network (100) are determined to balance the data traffic through the links coupling the switching elements (102:165). The logical representation and traffic patterns of the interconnection network (100) are used to setup virtual channel identifiers that determine paths through the switching elements and links so that data traffic is more evenly distributed through the interconnection network (100).
    Type: Application
    Filed: January 2, 2002
    Publication date: April 17, 2003
    Inventors: Ho-Yen Chang, Tyan-Shu Jou, Ritesh Ahuja, James da Silva