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11. 发明授权

US07260212B1 Method and apparatus for subscriber line control circuit 有权
标题翻译：用户线路控制电路的方法和装置
公开(公告)号：US07260212B1
公开(公告)日：2007-08-21
申请号：US11693718
申请日：2007-03-30
申请人： Peter Holzmann
发明人： Peter Holzmann
IPC分类号： H04M1/00 , H04M9/00
CPC分类号： H04M1/76 , H04M1/738
摘要： A subscriber line interface circuit apparatus includes a linefeed circuit and a subscriber line control circuit (SLCC). In an embodiment, the linefeed circuit includes a signal conversion circuit which provides a differential mode signal and a common mode signal in response to at least the tip signal and the ring signal from the subscriber loop. The linefeed circuit includes a tip control circuit and a ring control circuit. In an embodiment, the SLCC is provided in a single integrated circuit chip and is coupled to the linefeed circuit which isolates the SLCC from the tip or ring signals. The SLCC includes a first and a second differential mode inputs for receiving the differential mode signal, and a common-mode input for receiving the common-mode signal. In an embodiment, the SLCC also provides various tip and ring control signals to the tip control circuit and the ring control circuit, respectively.
摘要翻译：用户线路接口电路装置包括线路馈送电路和用户线路控制电路（SLCC）。在一个实施例中，线路馈送电路包括信号转换电路，其响应于至少来自用户环路的尖端信号和振铃信号，提供差模信号和共模信号。换行电路包括尖端控制电路和环形控制电路。在一个实施例中，SLCC设置在单个集成电路芯片中，并且耦合到线路馈送电路，其将SLCC与尖端或环形信号隔离。 SLCC包括用于接收差分模式信号的第一和第二差分模式输入，以及用于接收共模信号的共模输入。在一个实施例中，SLCC还分别向尖端控制电路和环控制电路提供各种尖端和环控制信号。

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