发明名称 |
Data card and data strip measuring means |
摘要 |
In a data transmission system comprising at least one data bank, data may be accessed through a subscriber station. First data should only be accessed by a first authorized range of subscribers, while other data may only be accessed by a second authorized range of subscribers. To this end, the subscriber station includes a reading device enabling data access only if data read from an authorization card to be supplied fulfill predetermined test conditions.
|
申请公布号 |
US4621188(A) |
申请公布日期 |
1986.11.04 |
申请号 |
US19850697425 |
申请日期 |
1985.02.01 |
申请人 |
STOCKBURGER, HERMANN;WINDERLICH, HANS-GEORG |
发明人 |
STOCKBURGER, HERMANN;WINDERLICH, HANS-GEORG |
分类号 |
G06K19/10;G07F7/08;G07F7/12;(IPC1-7):G06K19/00 |
主分类号 |
G06K19/10 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|