Patents by Inventor Chikashi Ueda

Chikashi Ueda 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).

  • Fault tolerant server
    Patent number: 9785524
    Abstract: A fault tolerant server according to the present invention configured to duplicate information processing by an online subsystem and an offline subsystem, the fault tolerant server operates to: execute entire copy processing for copying all data being stored in the memory of the online subsystem into the memory of the offline subsystem without stopping execution of information processing by the processor of the online subsystem, before start of duplication; detect data, the data satisfying a criterion indicating that content of data is changed during the entire copy processing, among data being stored in the memory of the online subsystem; and copy the detected data from the memory of the online subsystem into the memory of the offline subsystem.
    Type: Grant
    Filed: March 6, 2015
    Date of Patent: October 10, 2017
    Assignee: NEC Corporation
    Inventor: Chikashi Ueda
  • Fault Tolerant Server
    Publication number: 20150269037
    Abstract: A fault tolerant server according to the present invention configured to duplicate information processing by an online subsystem and an offline subsystem, the fault tolerant server operates to: execute entire copy processing for copying all data being stored in the memory of the online subsystem into the memory of the offline subsystem without stopping execution of information processing by the processor of the online subsystem, before start of duplication; detect data, the data satisfying a criterion indicating that content of data is changed during the entire copy processing, among data being stored in the memory of the online subsystem; and copy the detected data from the memory of the online subsystem into the memory of the offline subsystem.
    Type: Application
    Filed: March 6, 2015
    Publication date: September 24, 2015
    Inventor: Chikashi Ueda