Data processing: database and file management or data structures – Database design – Data structure types
Reexamination Certificate
2005-09-13
2005-09-13
Alam, Shahid Al (Department: 2162)
Data processing: database and file management or data structures
Database design
Data structure types
C707S793000, C707S793000, C707S793000, C709S203000, C715S252000
Reexamination Certificate
active
06944623
ABSTRACT:
Disclosed is a method for data synchronization in a web-based transmission device management system, in which managing data requiring synchronization between a web server and a client is constructed as a tree data structure, and a change flag for judging a data change is easily set. The web server increases a second event number by a certain degree whenever an event datagram is transmitted to the client, and the client judges whether or not the event datagram is lost by comparing the second event number and a first event number stored by the client whenever an event datagram is transmitted from the web server. If the event datagram is not lost, the client increases the first event number by a certain degree and performs data synchronization using the received event datagram. However, if the event datagram is lost, the client transmits every checksum of the leaf nodes in its tree data structure in one request datagram to the web server, and performs data synchronization by receiving changed data from the web server. Therefore, a loss of data is recognized promptly and precisely, and change of data on the web server also can be recognized promptly.
REFERENCES:
patent: 6092077 (2000-07-01), Ahmadi
patent: 6314408 (2001-11-01), Salas et al.
patent: 6393462 (2002-05-01), Mullen-Schultz
patent: 6466949 (2002-10-01), Yang et al.
patent: 6714926 (2004-03-01), Benson
Bright, Jonathan D. et al., “Checking the Integrity of Trees”, 1995 IEEE, Twenty-Fifth International□□Symposium on Fault-Tolerant Computing. FTCS-25. Digest of Papers., Jun. 27-30 1995, pp. 402-411.
Kafeza, Eleanna et al., “Transaction Synchronization in Structures for Point Data”, GIS, 1997 ACM, pp. 44-49.
Kanth, K. V. Ravi et al., “Improved Concurrency Control Techniques for Multi-dimensional Index Structures”, http://ipdps.eece.unm.edu/1998/papers/295.pdf.
Al Alam Shahid
Fleshner & Kim LLP
LandOfFree
Method for data synchronization in web-based communications... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for data synchronization in web-based communications..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for data synchronization in web-based communications... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3434282