发明名称 |
TRANSMITTER-RECEIVER AND USE THEREOF IN A TELECOMMUNICATION NETWORK |
摘要 |
The transceiver according to the invention is controlled by an automatic alternation device in order to permit transmission solely when voice signals are to be transmitted and when the receiver does not receive such signals. On transmission, the transmitter supplies constant amplitude-modulated, high frequency signals during voice activity periods and supplies nothing outside these periods. On reception, a detector for detecting the rapid amplitude transitions of the received signals and a logic circuit control the switching off of an electronic switch during the voice activity periods, so that the output of the receiver only supplies voice signals. The gain of the receiver amplifier is controlled by an automatic control loop. The value of the time constant of this loop is controlled so as to be low during the voice activity periods and high outside these periods. |
申请公布号 |
DE3062144(D1) |
申请公布日期 |
1983.04.07 |
申请号 |
DE19803062144 |
申请日期 |
1980.01.08 |
申请人 |
THOMSON-CSF |
发明人 |
DEMAN, PIERRE;PIMENTEL, ALBERTO;BEN SADOU, JEAN-CLAUDE;DE RIVIERE, CHARLES |
分类号 |
H04B1/46;(IPC1-7):H04B1/46 |
主分类号 |
H04B1/46 |
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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