JPS5472608A - Dial pulse receiving system - Google Patents

Dial pulse receiving system

Info

Publication number
JPS5472608A
JPS5472608A JP13972177A JP13972177A JPS5472608A JP S5472608 A JPS5472608 A JP S5472608A JP 13972177 A JP13972177 A JP 13972177A JP 13972177 A JP13972177 A JP 13972177A JP S5472608 A JPS5472608 A JP S5472608A
Authority
JP
Japan
Prior art keywords
circuit
timing
voltage comparator
pulse
dial pulse
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
JP13972177A
Other languages
Japanese (ja)
Inventor
Sho Mototani
Takeshi Sanbe
Takashi Kikuta
Junji Asakura
Koji Inoue
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujitsu Ltd
Hitachi Ltd
NEC Corp
Nippon Telegraph and Telephone Corp
Oki Electric Industry Co Ltd
Original Assignee
Fujitsu Ltd
Hitachi Ltd
NEC Corp
Nippon Telegraph and Telephone Corp
Oki Electric Industry Co Ltd
Nippon Electric Co Ltd
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 Fujitsu Ltd, Hitachi Ltd, NEC Corp, Nippon Telegraph and Telephone Corp, Oki Electric Industry Co Ltd, Nippon Electric Co Ltd filed Critical Fujitsu Ltd
Priority to JP13972177A priority Critical patent/JPS5472608A/en
Publication of JPS5472608A publication Critical patent/JPS5472608A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q1/00—Details of selecting apparatus or arrangements
    • H04Q1/18—Electrical details
    • H04Q1/30—Signalling arrangements; Manipulation of signalling currents
    • H04Q1/32—Signalling arrangements; Manipulation of signalling currents using trains of dc pulses
    • H04Q1/36—Pulse-correcting arrangements, e.g. for reducing effects due to interference

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)

Abstract

PURPOSE:To remove receiving distortion of a dial pulse and propose to obtain stability against the number of times of operation and to miniaturize a circuit by using an electronic circuit. CONSTITUTION:An input dial pulse is detected I and the detected result is supplied to timing circuit portion III through combined portion II; different kind of timing is generated by controlling the standard electric potential of voltage comparator by means of the voltage comparator which detects time constant circuit operated according to the initial and terminal points of pulse and the status of time constant circuit to the value which varies according to the output of voltage comparator, so that the initial and terminal points of input pulse are delayed and outputted according to the timing.
JP13972177A 1977-11-21 1977-11-21 Dial pulse receiving system Pending JPS5472608A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13972177A JPS5472608A (en) 1977-11-21 1977-11-21 Dial pulse receiving system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13972177A JPS5472608A (en) 1977-11-21 1977-11-21 Dial pulse receiving system

Publications (1)

Publication Number Publication Date
JPS5472608A true JPS5472608A (en) 1979-06-11

Family

ID=15251848

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13972177A Pending JPS5472608A (en) 1977-11-21 1977-11-21 Dial pulse receiving system

Country Status (1)

Country Link
JP (1) JPS5472608A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5141938A (en) * 1974-10-07 1976-04-08 Omron Tateisi Electronics Co On ofudeireikairo
JPS52119806A (en) * 1976-03-30 1977-10-07 Siemens Ag Circuit for evaluating line status change for communication system such as telephone system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5141938A (en) * 1974-10-07 1976-04-08 Omron Tateisi Electronics Co On ofudeireikairo
JPS52119806A (en) * 1976-03-30 1977-10-07 Siemens Ag Circuit for evaluating line status change for communication system such as telephone system

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