发明名称 |
Method for activating a file on a navigation system |
摘要 |
Method in which firstly a user inputs first and second encryption codes (PIN, ACW) into the navigation system. The codes are converted to vectors. The device identifier (ID) of the navigation system and the first encryption code are used to calculate a key (k). The key and the second encryption code are used to calculate an access code (AD), which is compared with a value stored in system memory. If there is agreement, the required files are decoded and enabled for use by the navigation system.
|
申请公布号 |
EP1338943(A2) |
申请公布日期 |
2003.08.27 |
申请号 |
EP20030008956 |
申请日期 |
2000.03.30 |
申请人 |
SIEMENS AKTIENGESELLSCHAFT |
发明人 |
DRIJFHOUT, THEO;THOONE, MARTIN |
分类号 |
G01C21/26;G06F1/00;G06F21/10;G11B20/00;G11B20/10;G11B20/12;(IPC1-7):G06F1/00 |
主分类号 |
G01C21/26 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|