Patents by Inventor Frederick Robert Chang

Frederick Robert 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).

  • Ethernet wide area networks and methods
    Patent number: 8149853
    Abstract: Ethernet wide area networks and methods are disclosed. A disclosed example Ethernet wide area network includes a first network Ethernet switch having a first network interface and a first service interface. The first service interface is to communicate with a first local area Ethernet switch. The network also includes a second network Ethernet switch having a second network interface and a second service interface. The second service interface is to communicate with the second local area Ethernet switch. The network also includes a root node network Ethernet switch having a third network interface to communicate with the first network interface with the first network Ethernet switch and a fourth network interface to communicate with the second network interface of the second network Ethernet switch.
    Type: Grant
    Filed: October 23, 2009
    Date of Patent: April 3, 2012
    Assignee: AT&T Labs, Inc.
    Inventors: Frederick Robert Chang, Shih Chung Soon
  • ETHERNET WIDE AREA NETWORKS AND METHODS
    Publication number: 20100103944
    Abstract: Ethernet wide area networks and methods are disclosed. A disclosed example Ethernet wide area network includes a first network Ethernet switch having a first network interface and a first service interface. The first service interface is to communicate with a first local area Ethernet switch. The network also includes a second network Ethernet switch having a second network interface and a second service interface. The second service interface is to communicate with the second local area Ethernet switch. The network also includes a root node network Ethernet switch having a third network interface to communicate with the first network interface with the first network Ethernet switch and a fourth network interface to communicate with the second network interface of the second network Ethernet switch.
    Type: Application
    Filed: October 23, 2009
    Publication date: April 29, 2010
    Inventors: Frederick Robert Chang, Shih Chung Soon
  • Ethernet wide area network and method
    Patent number: 7633951
    Abstract: An ethernet wide area network (10) has a number of interconnected network ethernet switches (12). A first local area network (18) has a first local area ethernet switch (16) and is connected to one (14) of the interconnected network ethernet switches (12). A second local area network (24) has a second local area ethernet switch (22) connected to a second (20) of the interconnected network ethernet switches (12).
    Type: Grant
    Filed: February 22, 2006
    Date of Patent: December 15, 2009
    Assignee: AT&T Intellectual Property I, LP
    Inventors: Frederick Robert Chang, Shih Chung Soon
  • Method of improving the reliability of peer-to-peer network downloads
    Patent number: 7475132
    Abstract: A method of improving the reliability of peer-to-peer network downloads includes the steps of initiating a search from a client on a peer-to-peer network. Next, a list of servers is downloaded that satisfies the search. At least one of the servers is selected from the list of servers. Next, one of a plurality of downloading systems is selected based on a predetermined criteria. A file is downloaded using one of the plurality of downloading systems.
    Type: Grant
    Filed: August 9, 2007
    Date of Patent: January 6, 2009
    Assignee: AT&T Knowledge Ventures, LP
    Inventors: Frederick Robert Chang, Sreenivasa Rao Gorti, Jennifer Lynne Joy
  • Method of improving the reliability of peer-to-peer network downloads
    Patent number: 7272645
    Abstract: A method of improving the reliability of peer-to-peer network downloads includes the steps of initiating a search from a client on a peer-to-peer network (152). Next, a list of servers is downloaded that satisfies the search (154). At least one of the servers is selected from the list of servers (156). Next, one of a plurality of downloading systems is selected based on a predetermined criteria (158). A file is downloaded using one of the plurality of downloading systems.
    Type: Grant
    Filed: May 25, 2001
    Date of Patent: September 18, 2007
    Assignee: SBC Technology Resources, Inc.
    Inventors: Frederick Robert Chang, Sreenivasa Rao Gorti, Jennifer Lynne Joy
  • Ethernet wide area network and method
    Patent number: 7046671
    Abstract: An ethernet wide area network (10) has a number of interconnected network ethernet switches (12). A first local area network (18) has a first local area ethernet switch (16) and is connected to one (14) of the interconnected network ethernet switches (12). A second local area network (24) has a second local area ethernet switch (22) connected to a second (20) of the interconnected network ethernet switches (12).
    Type: Grant
    Filed: May 8, 2002
    Date of Patent: May 16, 2006
    Assignee: SBC Knowledge Ventures, L.P.
    Inventors: Frederick Robert Chang, Shih Chung Soon
  • Ethernet wide area network and method
    Publication number: 20030210706
    Abstract: An ethernet wide area network (10) has a number of interconnected network ethernet switches (12). A first local area network (18) has a first local area ethernet switch (16) and is connected to one (14) of the interconnected network ethernet switches (12). A second local area network (24) has a second local area ethernet switch (22) connected to a second (20) of the interconnected network ethernet switches (12).
    Type: Application
    Filed: May 8, 2002
    Publication date: November 13, 2003
    Inventors: Frederick Robert Chang, Shih Chung Soon