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GB1592770A - Pulse duration standardising circuit - Google Patents

Pulse duration standardising circuit Download PDF

Info

Publication number
GB1592770A
GB1592770A GB37752/77A GB3775277A GB1592770A GB 1592770 A GB1592770 A GB 1592770A GB 37752/77 A GB37752/77 A GB 37752/77A GB 3775277 A GB3775277 A GB 3775277A GB 1592770 A GB1592770 A GB 1592770A
Authority
GB
United Kingdom
Prior art keywords
circuit
standardising
pulse duration
pulses
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.)
Expired
Application number
GB37752/77A
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 GB1592770A publication Critical patent/GB1592770A/en
Expired 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)
  • Networks Using Active Elements (AREA)
  • Pulse Circuits (AREA)
GB37752/77A 1976-11-10 1977-09-09 Pulse duration standardising circuit Expired GB1592770A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA265,382A CA1048184A (en) 1976-11-10 1976-11-10 Pulse duration correction circuit

Publications (1)

Publication Number Publication Date
GB1592770A true GB1592770A (en) 1981-07-08

Family

ID=4107240

Family Applications (1)

Application Number Title Priority Date Filing Date
GB37752/77A Expired GB1592770A (en) 1976-11-10 1977-09-09 Pulse duration standardising circuit

Country Status (8)

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

Families Citing this family (6)

* 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
US4839920A (en) * 1985-09-30 1989-06-13 Siemens Aktiengesellschaft Method for determining telephone dial pulse parameters independently of subscriber line length
JPS63290046A (ja) * 1987-05-21 1988-11-28 Pioneer Electronic Corp パルス幅ひずみ補正回路
CA1270585A (en) * 1987-06-19 1990-06-19 Brent Lawrence Kizuik Rotary dial pulse receiver
US5227671A (en) * 1992-04-14 1993-07-13 Quantum Corporation Circuit providing equalized duty cycle output
JPH11112304A (ja) * 1997-10-07 1999-04-23 Fujitsu Ltd パルス幅制御論理回路

Also Published As

Publication number Publication date
DE2741843A1 (de) 1978-05-11
FR2371092A1 (fr) 1978-06-09
NL7710179A (nl) 1978-05-12
SE7712747L (sv) 1978-05-11
JPS5360550A (en) 1978-05-31
CA1048184A (en) 1979-02-06
IT1087728B (it) 1985-06-04

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Legal Events

Date Code Title Description
CSNS Application of which complete specification have been accepted and published, but patent is not sealed