Method and apparatus for synchronizing database in portable communication devices

Method and apparatus for synchronizing database in portable communication devices

  • CN 1,227,887 C
  • Filed: 07/03/2000
  • Issued: 11/16/2005
  • Est. Priority Date: 07/05/1999
  • Status: Active Grant
First Claim
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1. method that is used for following the tracks of the change that the database that is stored in the smart card relevant with electronic equipment is made, this method comprises the following steps:

  • In the memory of described electronic equipment and described smart card, all store a verification relevant with described database and;

    Described database is made a change;

    Described change is recorded in the change daily record;

    After described change based on described database calculate a modification verification and;

    In described memory and described smart card the storage described modification verification and;

    Relatively be stored in the described memory verification and be stored in the described smart card verification and;

    AndAs the result of described comparison step, if described verification and not matching, it is invalid just described change daily record to be labeled as.

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