CA1043024A - Multi-frequency signaling decoder - Google Patents

Multi-frequency signaling decoder

Info

Publication number
CA1043024A
CA1043024A CA248,883A CA248883A CA1043024A CA 1043024 A CA1043024 A CA 1043024A CA 248883 A CA248883 A CA 248883A CA 1043024 A CA1043024 A CA 1043024A
Authority
CA
Canada
Prior art keywords
signal
jitter
time
frequency
channel
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
CA248,883A
Other languages
English (en)
French (fr)
Inventor
Floyd D. Allen
Ronald R. Lien
Robert K. Booher
Rafn Stefansson
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.)
American Telecommunications Corp
Original Assignee
American Telecommunications Corp
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 American Telecommunications Corp filed Critical American Telecommunications Corp
Application granted granted Critical
Publication of CA1043024A publication Critical patent/CA1043024A/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
    • H04Q1/44—Signalling arrangements; Manipulation of signalling currents using alternate current
    • H04Q1/444—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies
    • H04Q1/45—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling
    • H04Q1/457—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling with conversion of multifrequency signals into digital signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Analogue/Digital Conversion (AREA)
CA248,883A 1975-04-11 1976-03-23 Multi-frequency signaling decoder Expired CA1043024A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US56709875A 1975-04-11 1975-04-11

Publications (1)

Publication Number Publication Date
CA1043024A true CA1043024A (en) 1978-11-21

Family

ID=24265706

Family Applications (1)

Application Number Title Priority Date Filing Date
CA248,883A Expired CA1043024A (en) 1975-04-11 1976-03-23 Multi-frequency signaling decoder

Country Status (5)

Country Link
JP (1) JPS51139712A (de)
BE (1) BE840630A (de)
CA (1) CA1043024A (de)
DE (1) DE2613245A1 (de)
GB (1) GB1521414A (de)

Also Published As

Publication number Publication date
BE840630A (fr) 1976-10-11
GB1521414A (en) 1978-08-16
JPS51139712A (en) 1976-12-02
DE2613245A1 (de) 1976-10-21

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