JPS54128606A - Reception circuit for dial pulse - Google Patents

Reception circuit for dial pulse

Info

Publication number
JPS54128606A
JPS54128606A JP3700278A JP3700278A JPS54128606A JP S54128606 A JPS54128606 A JP S54128606A JP 3700278 A JP3700278 A JP 3700278A JP 3700278 A JP3700278 A JP 3700278A JP S54128606 A JPS54128606 A JP S54128606A
Authority
JP
Japan
Prior art keywords
pulse width
circuit
given time
schmitt trigger
integration 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.)
Granted
Application number
JP3700278A
Other languages
Japanese (ja)
Other versions
JPS586438B2 (en
Inventor
Shinichi Ito
Moriyoshi Ishida
Hidemi Harada
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
Original Assignee
Fujitsu 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 filed Critical Fujitsu Ltd
Priority to JP53037002A priority Critical patent/JPS586438B2/en
Publication of JPS54128606A publication Critical patent/JPS54128606A/en
Publication of JPS586438B2 publication Critical patent/JPS586438B2/en
Expired 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Manipulation Of Pulses (AREA)

Abstract

PURPOSE:To extend the range of the input pulse width and to increase the efficiency of utilization, by adjusting the resistor inserted between the integration circuit and the Schmitt trigger circuit and reducing the distance between the pulse width absorbed and the pulse width outputting more than a given time. CONSTITUTION:The integration circuit 2 and the Schmitt trigger circuit 11 which are in series connection each other are provided after the wave shape circuit 1 of dial pulse, which has the function absorbing the make and brake pulses having the pulse width less than a given time. Further, a resistor is inserted between the integration circuit 2 and the Schmitt trigger circfit 11 and the adjustment of it reduces the distance between the absorbed pulse width and that outputted more than a given time. Thus, the range of the input pulse width possible for reception is extended and the efficiency of utilization can be increased.
JP53037002A 1978-03-30 1978-03-30 Dial pulse receiver circuit Expired JPS586438B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP53037002A JPS586438B2 (en) 1978-03-30 1978-03-30 Dial pulse receiver circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP53037002A JPS586438B2 (en) 1978-03-30 1978-03-30 Dial pulse receiver circuit

Publications (2)

Publication Number Publication Date
JPS54128606A true JPS54128606A (en) 1979-10-05
JPS586438B2 JPS586438B2 (en) 1983-02-04

Family

ID=12485494

Family Applications (1)

Application Number Title Priority Date Filing Date
JP53037002A Expired JPS586438B2 (en) 1978-03-30 1978-03-30 Dial pulse receiver circuit

Country Status (1)

Country Link
JP (1) JPS586438B2 (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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 (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52119806A (en) * 1976-03-30 1977-10-07 Siemens Ag Circuit for evaluating line status change for communication system such as telephone system

Also Published As

Publication number Publication date
JPS586438B2 (en) 1983-02-04

Similar Documents

Publication Publication Date Title
JPS52113602A (en) Pulse noise eliminator
JPS5429956A (en) Pulse generator
JPS54128606A (en) Reception circuit for dial pulse
JPS5441651A (en) Digital filter of non-circulation type
JPS5434644A (en) Input/output circiut
JPS52126159A (en) Frequency multiplying circuit
JPS53114650A (en) Adjustment of signal pulse width and delay circuit
JPS5341967A (en) Wave form shaping circuit
JPS5234648A (en) Delay circuit
JPS5430761A (en) Filter circuit using elastic surface-wave filter
JPS5218154A (en) Frequency addition circuit
JPS51121241A (en) Pulse delay circuit
JPS544548A (en) Elastic surface-wave filter
JPS546435A (en) Interface circuit
JPS5357943A (en) Comparating circuit
JPS53136465A (en) Pulse generating circuit
JPS53103350A (en) Digital filter
JPS52137251A (en) Counter output device
JPS5477556A (en) Digital frequency converter circuit
JPS5323547A (en) Signal generator
JPS5353945A (en) Limiter circuit for high frequency usage
JPS5290218A (en) Wave form transmission system
JPS52102666A (en) Timer circuit
JPS53129952A (en) Load driving circuit
JPS53148378A (en) Antenna unit of delayed array