Patents by Inventor Hanh Duy Vo

Hanh Duy Vo 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: 6615042
    Abstract: A method in a Wireless Intelligent Network (WIN) of handling subscriber services when a serving Mobile Switching Center (MSC) does not support all WIN triggers. The WIN includes a Home Location Register (HLR) having a subscriber profile that indicates the WIN triggers required to support a particular subscriber's active services. When an invoke message is sent from the MSC to the HLR, a WIN Capabilities (WINCAP) parameter is included and indicates the WIN triggers supported by the MSC. The HLR identifies a Service Control Point (SCP) for each subscriber service that requires a WIN trigger and is not supported by the MSC. The HLR then queries each identified SCP for call-treatment instructions. If an SCP determines that its service is essential, a response is returned to the HLR with an instruction to deny service to the subscriber.
    Type: Grant
    Filed: July 5, 2000
    Date of Patent: September 2, 2003
    Assignee: Telefonaktiebolaget L M Ericsson (publ)
    Inventors: Margaret Britt, Pietro Fionda, Hanh Duy Vo, Phat M. Nguyen, Binh Nguyen, Susan Anctil, Giuseppe Bruzzese
  • Patent number: 6567657
    Abstract: A method and system for automatically adjusting charges to a pre-paid account in a telecommunications or distributed processing network following a failure in the network. After a service that is chargeable against the pre-paid account is initiated in the network, a failure in the network is detected. The failure prevents a charging node from receiving event data relating to the pre-paid account. After recovery from the failure, a message is sent to the charging node containing service status information. The charging node adjusts the account balance in accordance with the service status information.
    Type: Grant
    Filed: September 21, 1999
    Date of Patent: May 20, 2003
    Assignee: Telefonaktiebolaget L M Ericsson
    Inventors: Gerald Holly, Akilan Tiburtius, Arturo Vega, Hanh Duy Vo, Nadia Bishai, Jacques Bugnon, David Strickland