Patents by Inventor Chi-Tsun LIAO

Chi-Tsun LIAO 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).

  • System and method for recovering system status consistently to designed recovering time point in distributed database
    Patent number: 9372765
    Abstract: A method for recovering system status consistently to a designed recovering time point in a distributed database, wherein the distributed database comprises a primary server and multiple region servers, comprising: when the region servers detect a change of system status, analyzing an event for the change to generate an event log and storing the event log to the database; after a preset condition, the region servers generate a snapshot respectively; when the primary server receives the instruction to recover the system status to a designed time point, indicates the region servers to implement: reading the event log and snapshots stored in region servers; finding the snapshot closest to the designed time point; finding the event log and snapshot corresponding to an time interval between the time recorded in the snapshot and the designed time point to recover the system status to the designed time point.
    Type: Grant
    Filed: May 7, 2014
    Date of Patent: June 21, 2016
    Assignee: NATIONAL TSING HUA UNIVERSITY
    Inventors: Hung-Chang Hsiao, Chi-Tsun Liao, Chia-Ping Tsai, Yeh-Ching Chung
  • SYSTEM AND METHOD FOR RECOVERING SYSTEM STATUS CONSISTENTLY TO DESIGNED RECOVERING TIME POINT IN DISTRIBUTED DATABASE
    Publication number: 20150248421
    Abstract: A method for recovering system status consistently to a designed recovering time point in a distributed database, wherein the distributed database comprises a primary server and multiple region servers, comprising: when the region servers detect a change of system status, analyzing an event for the change to generate an event log and storing the event log to the database; after a preset condition, the region servers generate a snapshot respectively; when the primary server receives the instruction to recover the system status to a designed time point, indicates the region servers to implement: reading the event log and snapshots stored in region servers; finding the snapshot closest to the designed time point; finding the event log and snapshot corresponding to an time interval between the time recorded in the snapshot and the designed time point to recover the system status to the designed time point.
    Type: Application
    Filed: May 7, 2014
    Publication date: September 3, 2015
    Applicant: National Tsing Hua University
    Inventors: Hung-Chang HSIAO, Chi-Tsun LIAO, Chia-Ping TSAI, Yeh-Ching CHUNG