Method and apparatus for synchronizing a database in...

Details Method and apparatus for synchronizing a database in... Method and apparatus for synchronizing a database in...

H - Electricity

04

Q

H04Q 7/36 (2006.01) H04B 15/00 (2006.01) H04M 1/00 (2006.01)

Patent

CA 2276840

A method for tracking changes to a database stored in a SIM card of a mobile station, the method comprising the steps of: providing, in a memory of said mobile station and on said SIM card, a checksum storage area for checksums associated with said database; making a change to said database; comparing checksums stored in said memory and on said SIM card; calculating, after said change, a modified checksum based on said database; and storing said modified checksum in said memory and on said SIM card.

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