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1.发明公开Circuit for ringing signal generation for subscriber circuits 有权Schaltungsanordnung zur RufwechselspannungserzeugungfürTeilnehmerschaltungen
公开(公告)号：EP1017220A2
公开(公告)日：2000-07-05
申请号：EP99126234.6
申请日：1999-12-30
Applicant: STMicroelectronics S.r.l.
Inventor： Rossi, Walter , Lari, Ferdinando , Antonini, Carlo , Consiglio, Pietro , Vergani, Luigi
IPC: H04M19/02
CPC classification number: H04M19/02
Abstract: A subscriber's telephone system is presented that includes at least one driver circuit connected to Tip and Ring terminals. An additional network is connected between an output of the driver circuit and the Ring terminal. This additional network includes a suitably dimensioned capacitor and a diode limiter connected in parallel with each other to minimize the overall voltage while maintaining a desired battery mean value.
Abstract translation: 提出了一种用户电话系统，其包括连接到尖端和环形终端的至少一个驱动器电路。 在驱动电路的输出和环形端子之间连接一个附加网络。 该附加网络包括适当尺寸的电容器和二极管限制器，彼此并联连接以最小化总体电压，同时保持期望的电池平均值。
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2.发明授权Circuit for ringing signal generation for subscriber circuits 有权用于Rufwechselspannungserzeugung订户电路的电路装置
公开(公告)号：EP1017220B1
公开(公告)日：2007-05-02
申请号：EP99126234.6
申请日：1999-12-30
Applicant: STMicroelectronics S.r.l.
Inventor： Rossi, Walter , Lari, Ferdinando , Antonini, Carlo , Consiglio, Pietro , Vergani, Luigi
IPC: H04M19/02
CPC classification number: H04M19/02
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3.发明公开Circuit for ringing signal generation for subscriber circuits 有权用于Rufwechselspannungserzeugung订户电路的电路装置
公开(公告)号：EP1017220A3
公开(公告)日：2003-07-09
申请号：EP99126234.6
申请日：1999-12-30
Applicant: STMicroelectronics S.r.l.
Inventor： Rossi, Walter , Lari, Ferdinando , Antonini, Carlo , Consiglio, Pietro , Vergani, Luigi
IPC: H04M19/02
CPC classification number: H04M19/02
Abstract: A subscriber's telephone system is presented that includes at least one driver circuit connected to Tip and Ring terminals. An additional network is connected between an output of the driver circuit and the Ring terminal. This additional network includes a suitably dimensioned capacitor and a diode limiter connected in parallel with each other to minimize the overall voltage while maintaining a desired battery mean value.
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