FR2371092A1 - Circuit de correction de duree d'impulsions - Google Patents

Circuit de correction de duree d'impulsions

Info

Publication number
FR2371092A1
FR2371092A1 FR7733797A FR7733797A FR2371092A1 FR 2371092 A1 FR2371092 A1 FR 2371092A1 FR 7733797 A FR7733797 A FR 7733797A FR 7733797 A FR7733797 A FR 7733797A FR 2371092 A1 FR2371092 A1 FR 2371092A1
Authority
FR
France
Prior art keywords
correction circuit
pulse duration
circuit
duration correction
input
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.)
Withdrawn
Application number
FR7733797A
Other languages
English (en)
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.)
Nortel Networks Ltd
Original Assignee
Northern Telecom 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 Northern Telecom Ltd filed Critical Northern Telecom Ltd
Publication of FR2371092A1 publication Critical patent/FR2371092A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K5/00—Manipulating of pulses not covered by one of the other main groups of this subclass
    • H03K5/156—Arrangements in which a continuous pulse train is transformed into a train having a desired pattern
    • H03K5/1565—Arrangements in which a continuous pulse train is transformed into a train having a desired pattern the output pulses having a constant duty cycle
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K5/00—Manipulating of pulses not covered by one of the other main groups of this subclass
    • H03K5/13—Arrangements having a single output and transforming input signals into pulses delivered at desired time intervals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/26—Devices for calling a subscriber
    • H04M1/30—Devices which can set up and transmit only one digit at a time
    • H04M1/31—Devices which can set up and transmit only one digit at a time by interrupting current to generate trains of pulses; by periodically opening and closing contacts to generate trains of pulses
    • 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)
  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Manipulation Of Pulses (AREA)
  • Pulse Circuits (AREA)
  • Networks Using Active Elements (AREA)

Abstract

La présente invention concerne un circuit de correction de durée d'impulsions. Ce circuit de correction comprend un comparateur 10 ayant deux entrées 11 et 12. L'entrée 11 reçoit une impulsion incidente par l'intermédiaire d'un moyen de circuit résistif 15 et l'autre entrée reçoit les impulsions incidentes par l'intermédiaire d'un circuit moyenneur bipolaire 30. La sortie 13 du comparateur constitue la sortie du circuit dont l'entrée se fait par la borne 14. Application à l'amélioration de l'établissement des communications téléphoniques.
FR7733797A 1976-11-10 1977-11-09 Circuit de correction de duree d'impulsions Withdrawn FR2371092A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA265,382A CA1048184A (fr) 1976-11-10 1976-11-10 Circuit correcteur de duree d'implosion

Publications (1)

Publication Number Publication Date
FR2371092A1 true FR2371092A1 (fr) 1978-06-09

Family

ID=4107240

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7733797A Withdrawn FR2371092A1 (fr) 1976-11-10 1977-11-09 Circuit de correction de duree d'impulsions

Country Status (8)

Country Link
JP (1) JPS5360550A (fr)
CA (1) CA1048184A (fr)
DE (1) DE2741843A1 (fr)
FR (1) FR2371092A1 (fr)
GB (1) GB1592770A (fr)
IT (1) IT1087728B (fr)
NL (1) NL7710179A (fr)
SE (1) SE7712747L (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2438380A1 (fr) * 1978-10-06 1980-04-30 Trt Telecom Radio Electr Dispositif pour fournir un signal logique avec un rapport cyclique proche de 0,5 a partir d'un signal logique ayant un rapport cyclique quelconque
EP0217131A2 (fr) * 1985-09-30 1987-04-08 Siemens Aktiengesellschaft Méthode pour la détection des caractéristiques temporelles d'impulsions de sélection, indépendamment de la longueur des lignes de raccordement d'abonnés
EP0565983A1 (fr) * 1992-04-14 1993-10-20 Quantum Corporation Circuit délivrant un signal de sortie avec un rapport cyclique égalisé

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63290046A (ja) * 1987-05-21 1988-11-28 Pioneer Electronic Corp パルス幅ひずみ補正回路
CA1270585A (fr) * 1987-06-19 1990-06-19 Brent Lawrence Kizuik Recepteur d'impulsions produites par un cadran rotatif
JPH11112304A (ja) * 1997-10-07 1999-04-23 Fujitsu Ltd パルス幅制御論理回路

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2438380A1 (fr) * 1978-10-06 1980-04-30 Trt Telecom Radio Electr Dispositif pour fournir un signal logique avec un rapport cyclique proche de 0,5 a partir d'un signal logique ayant un rapport cyclique quelconque
EP0217131A2 (fr) * 1985-09-30 1987-04-08 Siemens Aktiengesellschaft Méthode pour la détection des caractéristiques temporelles d'impulsions de sélection, indépendamment de la longueur des lignes de raccordement d'abonnés
EP0217131A3 (en) * 1985-09-30 1989-03-01 Siemens Aktiengesellschaft Berlin Und Munchen Method for detecting the temporal characteristics of selecting pulses, independent of the length of the subscriber connecting lines
EP0565983A1 (fr) * 1992-04-14 1993-10-20 Quantum Corporation Circuit délivrant un signal de sortie avec un rapport cyclique égalisé

Also Published As

Publication number Publication date
GB1592770A (en) 1981-07-08
DE2741843A1 (de) 1978-05-11
CA1048184A (fr) 1979-02-06
SE7712747L (sv) 1978-05-11
IT1087728B (it) 1985-06-04
JPS5360550A (en) 1978-05-31
NL7710179A (nl) 1978-05-12

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Legal Events

Date Code Title Description
ST Notification of lapse