JPS5850755U - Signal disconnection detection circuit - Google Patents
Signal disconnection detection circuitInfo
- Publication number
- JPS5850755U JPS5850755U JP1981140345U JP14034581U JPS5850755U JP S5850755 U JPS5850755 U JP S5850755U JP 1981140345 U JP1981140345 U JP 1981140345U JP 14034581 U JP14034581 U JP 14034581U JP S5850755 U JPS5850755 U JP S5850755U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- pulse
- detection circuit
- disconnection detection
- pulses
- 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
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図は光受信部の概略ブロック図、第２図は本考案の
一実施例を示す回路図、第３図および第４図は各部信号
波形図である。
図中、１０は立下り微分回路、１１は立下り微分回路、
ＤＬｌ〜ＤＬ３は遅延回路、Ａ１はアンドゲートである
。FIG. 1 is a schematic block diagram of an optical receiver, FIG. 2 is a circuit diagram showing an embodiment of the present invention, and FIGS. 3 and 4 are signal waveform diagrams of each part. In the figure, 10 is a falling differential circuit, 11 is a falling differential circuit,
DLl to DL3 are delay circuits, and A1 is an AND gate.
Claims (1)
び第２のパルスを発生する回路と、該第１のパルスを正
規のデータ信号の１タイムスロツトの１，２・・・・・
・０倍遅延させ、それらｎ個の遅延パルスを合成する回
路と、該合成回路が出力する遅延パルス群と前記第２の
パルスとを入力され、該第２のパルスが時間軸上で該遅
延パルスのいずれとも一致しないとき出力を生じるゲー
ト回路とを備えることを特徴とする信号断検出回路。a circuit for generating first and second pulses corresponding to leading and trailing edges of an input signal, respectively;
- A circuit that delays the n delayed pulses by 0 times and synthesizes the n delayed pulses, and the delayed pulse group output from the synthesis circuit and the second pulse are input, and the second pulse is input with the delay on the time axis. A signal disconnection detection circuit comprising: a gate circuit that produces an output when the pulse does not match any of the pulses.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1981140345U JPS5850755U (en) | 1981-09-21 | 1981-09-21 | Signal disconnection detection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1981140345U JPS5850755U (en) | 1981-09-21 | 1981-09-21 | Signal disconnection detection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5850755U true JPS5850755U (en) | 1983-04-06 |
Family
ID=29933509
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1981140345U Pending JPS5850755U (en) | 1981-09-21 | 1981-09-21 | Signal disconnection detection circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5850755U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05236521A (en) * | 1992-02-19 | 1993-09-10 | Nec Corp | Tone detecting circuit |
-
1981
- 1981-09-21 JP JP1981140345U patent/JPS5850755U/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05236521A (en) * | 1992-02-19 | 1993-09-10 | Nec Corp | Tone detecting circuit |
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