发明名称 |
Portable one-way radio pager and a method of transmitting messages thereto |
摘要 |
A portable one-way radio pager includes receiver means for receiving coded radio messages, a CPU for processing the messages, and a control memory containing at least one number referred to as "validity data" representative of a certain sum of money, the CPU being designed to decrement the validity data progressively during operation of the pager and to prevent normal operation of the pager when said validity data is less than a predetermined minimum value.
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申请公布号 |
US6157813(A) |
申请公布日期 |
2000.12.05 |
申请号 |
US19980038460 |
申请日期 |
1998.03.11 |
申请人 |
LEWINER, JACQUES;CARREEL, ERIC |
发明人 |
LEWINER, JACQUES;CARREEL, ERIC |
分类号 |
G08B5/22;(IPC1-7):H04Q7/00 |
主分类号 |
G08B5/22 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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