发明名称 |
Security system using modular timers |
摘要 |
Electrical timer modules that interact with one another so as to effect random operation of a plurality of electrical devices, creating the appearance that the devices are not operated automatically. The timer modules include circuitry that allows them to wake up from a sleep state or mode within a random time interval. Upon waking from the sleep state or mode, each modular timer initially senses for the presence of a transmitted signal. Upon receipt of a transmitted signal each module returns to its sleep state or mode. If no transmitted signal is received, the first timer module that wakes up transmits a signal to the other modules and activates an electrical device connected thereto.
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申请公布号 |
US6483780(B2) |
申请公布日期 |
2002.11.19 |
申请号 |
US20010033497 |
申请日期 |
2001.10.19 |
申请人 |
GZYBOWSKI MICHAEL S.;LEV ROBERT G. |
发明人 |
GZYBOWSKI MICHAEL S.;LEV ROBERT G. |
分类号 |
G04G15/00;(IPC1-7):G04B47/00;G04F8/00;G04F10/00;G01H43/00 |
主分类号 |
G04G15/00 |
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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