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1. 发明授权

US4953206A Methods of and apparatus for providing substantially error-free transmitted data 失效
标题翻译：提供基本上无误差的传输数据的方法和装置
公开(公告)号：US4953206A
公开(公告)日：1990-08-28
申请号：US307144
申请日：1989-02-03
申请人： Harold W. Friesen , Janice B. Haber , Wendell G. Nutt
发明人： Harold W. Friesen , Janice B. Haber , Wendell G. Nutt
IPC分类号： H04B3/32
CPC分类号： H04B3/32
摘要： In a system (20) for transmitting voice and data signals, insulated metallic conductor pairs (44--44) which transmit data signals and insulated metallic conductor pairs (46--46) which are capable of transmitting voice signals are enclosed in a common sheath system of a single cable (40). User pickup of station apparatus (34) during the generation of a ringing voltage on a voice conductor pair causes that pair to become disturbing and to impart impulse noise to a closely coupled data pair. The data pair is designated a disturbed pair and the signals transmitted thereby may be affected adversely. This problem is overcome by providing a circuit (80) comprising in parallel a resistance and an inductance and being in series with the station apparatus. Such an arrangement reduces substantially that frequency content of any disturbing signal which appears on the disturbing pair and which is in the range of the data signal spectrum. This reduces the magnitude of crosstalk between the voice and data pairs and results in substantially error-free transmitted data.
摘要翻译：在用于发送语音和数据信号的系统（20）中，传输数据信号的绝缘金属导体对（44-44）和能够发送语音信号的绝缘金属导体对（46-46）封装在公共护套系统的单个电缆（40）。在声音导体对上产生振铃电压期间，站装置（34）的用户拾取导致该对变得干扰并且将脉冲噪声给紧密耦合的数据对。数据对被指定为干扰对，并且由此传输的信号可能受到不利影响。通过提供并联包括电阻和电感并与站装置串联的电路（80）来克服该问题。这种布置基本上减少出现在干扰对上并且在数据信号频谱的范围内的任何干扰信号的频率内容。这减少了语音和数据对之间的串扰的大小，并导致基本上无错误的传输数据。

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