CA1121926A - Generateur de signaux modulateurs d'impulsions en duree et methode appropriee - Google Patents

Generateur de signaux modulateurs d'impulsions en duree et methode appropriee

Info

Publication number
CA1121926A
CA1121926A CA000386081A CA386081A CA1121926A CA 1121926 A CA1121926 A CA 1121926A CA 000386081 A CA000386081 A CA 000386081A CA 386081 A CA386081 A CA 386081A CA 1121926 A CA1121926 A CA 1121926A
Authority
CA
Canada
Prior art keywords
signal
generating
signals
data bytes
pulse width
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
CA000386081A
Other languages
English (en)
Inventor
Robert C. Dittburner
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
Priority to CA000386081A priority Critical patent/CA1121926A/fr
Application granted granted Critical
Publication of CA1121926A publication Critical patent/CA1121926A/fr
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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M19/00—Current supply arrangements for telephone systems
    • H04M19/02—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone
    • H04M19/023—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone by reversing the polarity of the current at the exchange

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Devices For Supply Of Signal Current (AREA)
CA000386081A 1981-09-16 1981-09-16 Generateur de signaux modulateurs d'impulsions en duree et methode appropriee Expired CA1121926A (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA000386081A CA1121926A (fr) 1981-09-16 1981-09-16 Generateur de signaux modulateurs d'impulsions en duree et methode appropriee

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA000386081A CA1121926A (fr) 1981-09-16 1981-09-16 Generateur de signaux modulateurs d'impulsions en duree et methode appropriee

Publications (1)

Publication Number Publication Date
CA1121926A true CA1121926A (fr) 1982-04-13

Family

ID=4120976

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000386081A Expired CA1121926A (fr) 1981-09-16 1981-09-16 Generateur de signaux modulateurs d'impulsions en duree et methode appropriee

Country Status (1)

Country Link
CA (1) CA1121926A (fr)

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Legal Events

Date Code Title Description
MKEX Expiry