发明名称 |
Adaptive sleep circuit using network timing feedback |
摘要 |
A method is disclosed for controlling operation of a battery powered modem to implement power conservation by adaptive modem sleep. The method comprises detecting the presence of a periodic network timing signal and detecting transition of the modem processor to a processing ready condition, wherein received RF signals can be processed. A processor ready signal is generated in response to detection of the processing ready condition and compared in time to occurrence of the network timing signal. A sleep error signal is generated which represents the interval between occurrence of the network timing signal and the processor ready signal. A modem is then directed into a sleep mode for periods of time sufficient to reduce the sleep error signal to be within a predetermined error budget.
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申请公布号 |
US5856786(A) |
申请公布日期 |
1999.01.05 |
申请号 |
US19970812719 |
申请日期 |
1997.03.05 |
申请人 |
NORTHROP GRUMMAN CORPORATION |
发明人 |
DIFRANCISCO, LOUIS R.;STRATMOEN, SCOTT A.;TRAINOR, MICHAEL JAMES |
分类号 |
H04L12/10;H04L12/12;(IPC1-7):G08B21/00 |
主分类号 |
H04L12/10 |
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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