JPS5859259U - signal identification circuit - Google Patents

signal identification circuit

Info

Publication number
JPS5859259U
JPS5859259U JP15399881U JP15399881U JPS5859259U JP S5859259 U JPS5859259 U JP S5859259U JP 15399881 U JP15399881 U JP 15399881U JP 15399881 U JP15399881 U JP 15399881U JP S5859259 U JPS5859259 U JP S5859259U
Authority
JP
Japan
Prior art keywords
counter
identification circuit
signal identification
signal
circuit
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
Application number
JP15399881U
Other languages
Japanese (ja)
Inventor
英治 中村
小白井　好夫
昭二 野島
Original Assignee
神田通信工業株式会社
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 神田通信工業株式会社 filed Critical 神田通信工業株式会社
Priority to JP15399881U priority Critical patent/JPS5859259U/en
Publication of JPS5859259U publication Critical patent/JPS5859259U/en
Pending legal-status Critical Current

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

【図面の簡単な説明】[Brief explanation of drawings]

第１図は本考案の一実施例を示す電気回路図である。第
２図は電話回線から来る信号の波形図である。Ａはベル
信号波形図、Ｂはダイヤルパルス波形図である。 １・・・・・・（入力）端子、３・・・・・・１６進カ
ウンター、４・・・・・・ＡＮＤ、５．７・・・・・・
抵抗器、６・・・・・・ダイオード、８・・・・・・コ
ンデンサー。FIG. 1 is an electrical circuit diagram showing an embodiment of the present invention. FIG. 2 is a waveform diagram of the signal coming from the telephone line. A is a bell signal waveform diagram, and B is a dial pulse waveform diagram. 1...(input) terminal, 3...hexadecimal counter, 4...AND, 5.7...
Resistor, 6...diode, 8...capacitor.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 電話回線からの呼出信号を受信する回路において、信号
系路にカウンターと時定数回路の一端とを接続し、前記
時定数回路の他端を前記カウンターのリセット端子に接
続して、信号系路からの入力信号に対応した出力を前記
カウンターから取出すことを特徴とした信号識別回路。In a circuit that receives a calling signal from a telephone line, a counter and one end of a time constant circuit are connected to the signal path, the other end of the time constant circuit is connected to a reset terminal of the counter, and the signal path is connected to the counter and one end of the time constant circuit. A signal identification circuit characterized in that an output corresponding to an input signal is taken out from the counter.
JP15399881U 1981-10-16 1981-10-16 signal identification circuit Pending JPS5859259U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15399881U JPS5859259U (en) 1981-10-16 1981-10-16 signal identification circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15399881U JPS5859259U (en) 1981-10-16 1981-10-16 signal identification circuit

Publications (1)

Publication Number Publication Date
JPS5859259U true JPS5859259U (en) 1983-04-21

Family

ID=29946599

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15399881U Pending JPS5859259U (en) 1981-10-16 1981-10-16 signal identification circuit

Country Status (1)

Country Link
JP (1) JPS5859259U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04243353A (en) * 1991-01-18 1992-08-31 Mitsubishi Electric Corp Sequencer device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5332604A (en) * 1976-09-07 1978-03-28 Tad Avanti Circuit for detecting receiving signal
JPS5420602A (en) * 1977-07-18 1979-02-16 Hitachi Denshi Ltd Incoming detection circuit of network controller

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5332604A (en) * 1976-09-07 1978-03-28 Tad Avanti Circuit for detecting receiving signal
JPS5420602A (en) * 1977-07-18 1979-02-16 Hitachi Denshi Ltd Incoming detection circuit of network controller

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04243353A (en) * 1991-01-18 1992-08-31 Mitsubishi Electric Corp Sequencer device

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