Patents by Inventor Yip-Hing Ng

Yip-Hing Ng 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).

  • Method, system, and program for determining whether data has been modified
    Patent number: 7117491
    Abstract: Provided are a method, system, and program for determining whether data has been modified. One node associated with at least one data unit and a last version number is received. A data structure having a plurality of nodes is processed, wherein there is one node associated with each data unit and at least one node that is capable of aggregating one or more nodes, and wherein version numbers are associated with the nodes. A determination is made from the data structure of one node that is associated with the data units associated with the received node. A determination is then made that at least one data unit associated with the received node has been modified if the received last version number is less than a version number of the determined node.
    Type: Grant
    Filed: August 29, 2002
    Date of Patent: October 3, 2006
    Assignee: International Business Machines Corporation
    Inventors: Luis Antonio Ferreira Alves, Yip-Hing Ng, Michael Harris Rosett, Jyh-shiarn Yur
  • Method, system, and program for determining whether data has been modified
    Publication number: 20040044702
    Abstract: Provided are a method, system, and program for determining whether data has been modified. One node associated with at least one data unit and a last version number is received. A data structure having a plurality of nodes is processed, wherein there is one node associated with each data unit and at least one node that is capable of aggregating one or more nodes, and wherein version numbers are associated with the nodes. A determination is made from the data structure of one node that is associated with the data units associated with the received node. A determination is then made that at least one data unit associated with the received node has been modified if the received last version number is less than a version number of the determined node.
    Type: Application
    Filed: August 29, 2002
    Publication date: March 4, 2004
    Inventors: Luis Antonio Ferreira Alves, Yip-Hing Ng, Michael Harris Rosett, Jyh-shiarn Yur