JPS63149657U

JPS63149657U -

Info

Publication number: JPS63149657U
Application number: JP2894088U
Authority: JP
Priority date: 1988-03-03
Filing date: 1988-03-03
Publication date: 1988-10-03

Description

[Brief explanation of the drawing]

第１図は従来のリングトリツプ回路の原理説明
図、第２図は従来のリングトリツプ回路の具体的
実施例、第３図は本発明による具体的回路の実施
例、また第３図中のは検出回路、は弁別回路
、は出力回路を示す。第４図ａはオンフツク時
における上記中の抵抗器Ｒ１両端の電圧波形、
同図ｂはｃ点でオフフツクした場合におけるＲ１
両端のその後の電圧波形を示す図である。 FIG. 1 is an explanatory diagram of the principle of a conventional ring trip circuit, FIG. 2 is a specific example of the conventional ring trip circuit, FIG. 3 is an example of a specific circuit according to the present invention, and in FIG. 3 is a detection circuit. , indicates a discrimination circuit, and indicates an output circuit. Figure 4a shows the voltage waveform across resistor R1 in the above during on-hook,
Figure b shows R1 when off-hook at point c.
FIG. 6 is a diagram showing subsequent voltage waveforms at both ends.

補正昭６３．４．１考案の名称を次のように補正する。考案の名称リングトリツプ回路実用新案登録請求の範囲、図面の簡単な説明を
次のように補正する。Amendment April 1, 1981 The name of the invention is amended as follows. Title of the invention: Ring trip circuit The scope of the utility model registration claims and the brief description of the drawings are amended as follows.

【実用新案登録請求の範囲】直流信号に交流信号が重畳される呼出信号を受
信し、直流成分と交流成分とが重畳された電圧を
発生させる呼出信号発生回路と、この呼出信号発
生回路の出力信号を電気的に分離した状態で弁別
する弁別回路により前記呼出信号の変動を検出す
る検出回路とを備え、呼出信号受信時における被
呼者の応答を検出するリングトリツプ回路におい
て、前記検出回路は、前記呼出信号を受けていない
ときの零電位を基準として、前記呼出信号を受け
たときの出力信号が所定のしきい値電圧を超えて
検出されたとき弁別信号を出力する弁別回路と、
前記呼出信号とは同期をとらずに時定数回路によ
り前記弁別回路から弁別信号が出力されたときか
ら所定時間経過後にリングトリツプ動作信号を出
力する出力回路とを具備していることを特徴とす
るリングトリツプ回路。[Claims for Utility Model Registration] A ringing signal generation circuit that receives a ringing signal in which an AC signal is superimposed on a DC signal and generates a voltage in which the DC component and the AC component are superimposed, and the output of this ringing signal generation circuit. A ring trip circuit detects a response of a called party when receiving a calling signal, the detection circuit comprising: a detection circuit that detects a variation in the calling signal using a discrimination circuit that discriminates the signals in an electrically separated state; , a discrimination circuit that outputs a discrimination signal when an output signal when receiving the calling signal is detected to exceed a predetermined threshold voltage, with reference to zero potential when not receiving the calling signal;
The ring trip is characterized by comprising an output circuit that outputs a ring trip operation signal after a predetermined period of time has elapsed from the time when the discrimination signal is output from the discrimination circuit using a time constant circuit without synchronizing with the ringing signal. circuit.

【図面の簡単な説明】第１図は従来のリングトリツプ回路の原理説明
図、第２図は従来のリングトリツプ回路の具体的
実施例、第３図は本発明による具体的回路の実施
例、また第３図中のは検出回路、は弁別回路
、は出力回路を示す。第４図ａはオンフツク時
における上記中の抵抗器Ｒ１両端の電圧波形、
同図ｂはｃ点でオフフツクした場合におけるＲ１
両端のその後の電圧波形を示す図である。[BRIEF DESCRIPTION OF THE DRAWINGS] FIG. 1 is a diagram explaining the principle of a conventional ring trip circuit, FIG. 2 is a concrete example of the conventional ring trip circuit, and FIG. 3 is a diagram showing a concrete example of the circuit according to the present invention. In Figure 3, 1 indicates a detection circuit, 1 indicates a discrimination circuit, and 1 indicates an output circuit. Figure 4a shows the voltage waveform across resistor R1 in the above during on-hook,
Figure b shows R1 when off-hook at point c.
FIG. 6 is a diagram showing subsequent voltage waveforms at both ends.

Claims

[Claims for Utility Model Registration] A ringing signal generation circuit that receives a ringing signal in which an AC signal is superimposed on a DC signal and generates a voltage in which the DC component and the AC component are superimposed, and the output of this ringing signal generation circuit. and a detection circuit that detects fluctuations in the DC component in the ringing signal using a discrimination circuit that discriminates the signals in an electrically separated state, and detects a response of a called party when receiving the ringing signal, the ring trip circuit comprising: The detection circuit is a discrimination circuit that outputs a discrimination signal when the output signal when receiving the calling signal is detected to exceed a predetermined threshold voltage, with reference to zero potential when not receiving the calling signal. and,
The ring trip is characterized by comprising an output circuit that outputs a ring trip operation signal after a predetermined period of time has elapsed from the time when the discrimination signal is output from the discrimination circuit using a time constant circuit without synchronizing with the ringing signal. circuit.