发明名称 |
Method and device for detecting the presence of a carrier signal transmitted in the reverse RF path |
摘要 |
The present invention provides an improved apparatus and method for detecting a reverse carrier signal. The present invention utilizes a peak detector/envelope filter for determining the peak level of the reverse analog waveform. The peak level is compared to a threshold level during a predetermined time period to determine the presence of a valid reverse carrier signal. Once determined, an enable signal is provided to an electronics device that allows further transmission of the reverse signals.
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申请公布号 |
US2004028122(A1) |
申请公布日期 |
2004.02.12 |
申请号 |
US20020213051 |
申请日期 |
2002.08.06 |
申请人 |
KIEN THAI-BAO H.;AO JIENING;WEST LAMAR E. |
发明人 |
KIEN THAI-BAO H.;AO JIENING;WEST LAMAR E. |
分类号 |
H04H60/97;H04N7/10;H04N7/173;(IPC1-7):H04L25/00 |
主分类号 |
H04H60/97 |
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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