JPH0282149U - - Google Patents
Info
- Publication number
- JPH0282149U JPH0282149U JP16154188U JP16154188U JPH0282149U JP H0282149 U JPH0282149 U JP H0282149U JP 16154188 U JP16154188 U JP 16154188U JP 16154188 U JP16154188 U JP 16154188U JP H0282149 U JPH0282149 U JP H0282149U
- Authority
- JP
- Japan
- Prior art keywords
- bell
- signal
- detection circuit
- incoming
- matching transformer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000001514 detection method Methods 0.000 claims description 7
- 238000010586 diagram Methods 0.000 description 3
Description
第１図は本考案の一実施例の電気的構成を示す
ブロツク線図、第２図は主要な信号の波形を示す
説明図、第３図はベル信号検出回路の変形実施例
の電気的接続を示す回路図、第４図は従来の技術
の電気的構成を示すブロツク線図である。
１２……呼出音発生回路、１３……マツチング
トランス、１４……スピーカ、１５……ベル信号
検出回路、２１……電話回線、１２ａ……ベル鳴
動信号、１５ａ……ベル検出信号、２１ａ……着
信ベル信号。
Fig. 1 is a block diagram showing the electrical configuration of one embodiment of the present invention, Fig. 2 is an explanatory diagram showing the waveforms of the main signals, and Fig. 3 is the electrical connection of a modified embodiment of the bell signal detection circuit. FIG. 4 is a block diagram showing the electrical configuration of the conventional technology. 12...Ring tone generation circuit, 13...Matching transformer, 14...Speaker, 15...Bell signal detection circuit, 21...Telephone line, 12a...Bell ringing signal, 15a...Bell detection signal, 21a... …Incoming bell signal.
Claims (1)
基いて生成されたベル鳴動信号が、マツチングト
ランスを介して、受話を行うスピーカに導かれる
ように構成された電話機において、 マツチングトランスを介して送出されたベル鳴
動信号の検出を行うとともに、該検出結果をベル
検出信号として送出するベル信号検出回路を備え
たことを特徴とする着信ベル信号検出回路。[Claim for Utility Model Registration] A bell ringing signal generated based on an incoming bell signal sent through a telephone line is guided to a speaker for receiving calls via a matching transformer. An incoming bell signal detection circuit for a telephone set, comprising: a bell signal detection circuit that detects a bell ringing signal sent out through a matching transformer and sends out the detection result as a bell detection signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988161541U JPH084762Y2 (en) | 1988-12-12 | 1988-12-12 | Incoming bell signal detection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988161541U JPH084762Y2 (en) | 1988-12-12 | 1988-12-12 | Incoming bell signal detection circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0282149U true JPH0282149U (en) | 1990-06-25 |
| JPH084762Y2 JPH084762Y2 (en) | 1996-02-07 |
Family
ID=31444569
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988161541U Expired - Lifetime JPH084762Y2 (en) | 1988-12-12 | 1988-12-12 | Incoming bell signal detection circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH084762Y2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0276439A (en) * | 1988-09-13 | 1990-03-15 | Nec Corp | Calling signal detecting circuit |
-
1988
- 1988-12-12 JP JP1988161541U patent/JPH084762Y2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0276439A (en) * | 1988-09-13 | 1990-03-15 | Nec Corp | Calling signal detecting circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH084762Y2 (en) | 1996-02-07 |