JPS59106235U - Line input/output circuit - Google Patents
Line input/output circuitInfo
- Publication number
- JPS59106235U JPS59106235U JP19825882U JP19825882U JPS59106235U JP S59106235 U JPS59106235 U JP S59106235U JP 19825882 U JP19825882 U JP 19825882U JP 19825882 U JP19825882 U JP 19825882U JP S59106235 U JPS59106235 U JP S59106235U
- Authority
- JP
- Japan
- Prior art keywords
- filter circuit
- output circuit
- line input
- line
- input
- 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.)
- Pending
Links
Landscapes
- Bidirectional Digital Transmission (AREA)
- Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は従来の回線用入出力回路の例を示す構成図、第
２図は本考案の回線用入出力回路の一実施例を示す構成
図である。
５は入力用フィルタ回路、８は出力用フィルタ回路、１
０は付加信号入力端子、１５は差動増幅器、１６及び１
９は夫々コンデンサである。FIG. 1 is a block diagram showing an example of a conventional line input/output circuit, and FIG. 2 is a block diagram showing an embodiment of the line input/output circuit of the present invention. 5 is an input filter circuit, 8 is an output filter circuit, 1
0 is an additional signal input terminal, 15 is a differential amplifier, 16 and 1
9 are capacitors.
Claims (1)
ルタ回路と、上記回線への上り信号周波数成分を通過さ
せる出力用フィルタ回路とを有し、該出力用フィルタ回
路を増幅器と周波数依存性素子とからなるアクティブフ
ィルタ回路から構成スると共に、上記増幅器の入力側の
周波数依存性のない点に付加信号を供給することにより
、上記出力用フィルタ回路を付加信号用のバッファ回路
として兼用するようにしたことを特徴とする回線用入出
力回路。It has an input filter circuit that passes the frequency component of the downlink signal from the line, and an output filter circuit that passes the frequency component of the upstream signal to the line, and the output filter circuit is connected to the amplifier and the frequency-dependent element. In addition, by supplying the additional signal to a point on the input side of the amplifier that has no frequency dependence, the output filter circuit can also be used as a buffer circuit for the additional signal. A line input/output circuit featuring:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19825882U JPS59106235U (en) | 1982-12-29 | 1982-12-29 | Line input/output circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19825882U JPS59106235U (en) | 1982-12-29 | 1982-12-29 | Line input/output circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS59106235U true JPS59106235U (en) | 1984-07-17 |
Family
ID=30423811
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19825882U Pending JPS59106235U (en) | 1982-12-29 | 1982-12-29 | Line input/output circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59106235U (en) |
-
1982
- 1982-12-29 JP JP19825882U patent/JPS59106235U/en active Pending
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