发明授权
US07814068B2 Identifying changed records in a file stored on an electronic token
有权
识别存储在电子令牌上的文件中的更改记录
- 专利标题： Identifying changed records in a file stored on an electronic token
- 专利标题（中）： 识别存储在电子令牌上的文件中的更改记录
-
申请号： US09987828申请日： 2001-11-16
-
公开(公告)号： US07814068B2公开(公告)日： 2010-10-12
- 发明人: Omid McDonald , Philip Painter , David McDonald
- 申请人： Omid McDonald , Philip Painter , David McDonald
- 申请人地址： FR Paris
- 专利权人： Gemalto SA
- 当前专利权人： Gemalto SA
- 当前专利权人地址： FR Paris
- 代理机构： Ogilvy Renault LLP
- 主分类号： G06F17/00
- IPC分类号： G06F17/00
摘要：
A method and system for detecting change to a record in a file stored on an electronic token involves storing a change detection code (CDC) so that a change detection applet can calculate a current CDC for corresponding record(s), and compare the current CDC with the stored CDC to determine if data has changed. Any changes to records are registered by a registering element that provides a service feature, back-up of the file and/or synchronizes the file with other files stored remotely. One use of the method is to back-up phonebook records on USIM/SIM cards.