JPH02101644U - - Google Patents
Info
- Publication number
- JPH02101644U JPH02101644U JP981589U JP981589U JPH02101644U JP H02101644 U JPH02101644 U JP H02101644U JP 981589 U JP981589 U JP 981589U JP 981589 U JP981589 U JP 981589U JP H02101644 U JPH02101644 U JP H02101644U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- signal
- selector
- outputs
- backup
- 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
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 1
Landscapes
- Time-Division Multiplex Systems (AREA)
- Detection And Prevention Of Errors In Transmission (AREA)
Description
第１図は本考案による入力信号切替装置の一実
施例を示すブロツク図、第２図は従来の入力信号
切替装置を示すブロツク図である。
１００……入力信号切替装置、１０１……バイ
ポーラ信号受信トランス、１０２……バイポーラ
・ユニポーラ変換回路、１０３……クロツク抽出
回路、１０４，１０５……セレクタ。
FIG. 1 is a block diagram showing an embodiment of an input signal switching device according to the present invention, and FIG. 2 is a block diagram showing a conventional input signal switching device. 100... Input signal switching device, 101... Bipolar signal receiving transformer, 102... Bipolar/unipolar conversion circuit, 103... Clock extraction circuit, 104, 105... Selector.
Claims (1)
化回路の現用側回路と予備側回路に、バイポーラ
入力信号およびモニタ信号を切り替えて入力する
入力信号切替装置において、 前記バイポーラ入力信号をユニポーラ入力信号
に変換して出力する信号変換回路と、 この信号変換回路の出力信号を前記現用側回路
または前記予備回路のいずれかに出力する第１の
セレクタと、 前記モニタ信号を前記現用側回路または前記予
備側回路のいずれかに出力する第２のセレクタと
を備えたことを特徴とする入力信号切替装置。[Claims for Utility Model Registration] An input signal switching device that switches and inputs a bipolar input signal and a monitor signal to a working circuit and a backup circuit of a digital multiplexing circuit constituting a digital transmission device, comprising: a signal conversion circuit that converts the signal into a unipolar input signal and outputs it; a first selector that outputs the output signal of the signal conversion circuit to either the working circuit or the backup circuit; and a first selector that converts the monitor signal to the working circuit. or a second selector that outputs to either of the backup side circuits.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP981589U JPH02101644U (en) | 1989-01-30 | 1989-01-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP981589U JPH02101644U (en) | 1989-01-30 | 1989-01-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02101644U true JPH02101644U (en) | 1990-08-13 |
Family
ID=31216892
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP981589U Pending JPH02101644U (en) | 1989-01-30 | 1989-01-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02101644U (en) |
-
1989
- 1989-01-30 JP JP981589U patent/JPH02101644U/ja active Pending