发明名称 |
Signal identification system |
摘要 |
The embodiments of the signal identification system which are disclosed distinguish between signal conditions on a communication line, as for example, between noise and modulated data signals and between noise, modulated data, voice, and a no signal condition, and identify the particular type of signal condition present.
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申请公布号 |
US3927260(A) |
申请公布日期 |
1975.12.16 |
申请号 |
US19740468007 |
申请日期 |
1974.05.07 |
申请人 |
ATLANTIC RESEARCH CORPORATION |
发明人 |
AMUNDSON, ROBERT M.;BROWN, ROBERT M. |
分类号 |
H04B1/74;H04Q1/448;(IPC1-7):H04M3/22 |
主分类号 |
H04B1/74 |
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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