发明名称 |
Ringback detection circuit |
摘要 |
A ringback detector determines whether ringback by comparing measurements of a characteristic of the received signal, such as the energy of the received signal, to a threshold. The threshold is set initially to a low value and then updated based on the measurements of received signal. The measurements are then compared to the threshold to determine whether ringback is present. An output signal indicative of ringback is generated when ringback is present. |
申请公布号 |
AU7538201(A) |
申请公布日期 |
2002.01.14 |
申请号 |
AU20010075382 |
申请日期 |
2001.06.07 |
申请人 |
ERICSSON INC. |
发明人 |
ERIC DOUGLAS ROMESBURG;MANUEL ROSENDO ARANA-MANZANO |
分类号 |
G10L11/02;H04B3/23;H04M1/82 |
主分类号 |
G10L11/02 |
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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