SE380701B - System for att digitalisera en mfc-signal. - Google Patents

System for att digitalisera en mfc-signal.

Info

Publication number
SE380701B
SE380701B SE7305320A SE7305320A SE380701B SE 380701 B SE380701 B SE 380701B SE 7305320 A SE7305320 A SE 7305320A SE 7305320 A SE7305320 A SE 7305320A SE 380701 B SE380701 B SE 380701B
Authority
SE
Sweden
Prior art keywords
digitalizing
mfc signal
mfc
signal
Prior art date
Application number
SE7305320A
Other languages
English (en)
Inventor
H J Coumou
Der Houwen D Van
Original Assignee
Nederlanden Staat
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 Nederlanden Staat filed Critical Nederlanden Staat
Publication of SE380701B publication Critical patent/SE380701B/sv

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/02—Details
    • H04J3/12—Arrangements providing for calling or supervisory signals
    • 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
    • H04Q1/4575—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 which are transmitted in digital form

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
SE7305320A 1972-04-17 1973-04-13 System for att digitalisera en mfc-signal. SE380701B (sv)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7205132A NL154386B (nl) 1972-04-17 1972-04-17 Signaleringsstelsel.

Publications (1)

Publication Number Publication Date
SE380701B true SE380701B (sv) 1975-11-10

Family

ID=19815859

Family Applications (1)

Application Number Title Priority Date Filing Date
SE7305320A SE380701B (sv) 1972-04-17 1973-04-13 System for att digitalisera en mfc-signal.

Country Status (5)

Country Link
DE (1) DE2318172C3 (sv)
FR (1) FR2180901B1 (sv)
IT (1) IT980245B (sv)
NL (1) NL154386B (sv)
SE (1) SE380701B (sv)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL177169B (nl) * 1978-09-08 1985-03-01 Nederlanden Staat Inrichting om de aanwezigheid vast te stellen van een of meer van een aantal frequenties in pulscode-gemoduleerde signalen.
AT374325B (de) * 1980-04-18 1984-04-10 Siemens Ag Oesterreich Einrichtung zur erzeugung zweier zu ueberlagernder elektrischer schwingungen unterschiedlicher frequenzen, insbesondere zur erzeugung von codezeichen fuer mehrfrequenzcodewahl
US4620294A (en) * 1983-09-09 1986-10-28 Cts Corporation Digital signal processor modem
US4599583A (en) * 1983-11-19 1986-07-08 Fujitsu Limited Mixed dual frequency generating system
DE4408323C2 (de) * 1994-03-11 1999-03-11 Siemens Ag Verfahren zur Erzeugung eines digitalen Sinussignales mit einer vorgegebenen Abtastrate und Schaltungsanordnung zur Durchführung des Verfahrens

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL267387A (sv) * 1960-08-23

Also Published As

Publication number Publication date
DE2318172C3 (de) 1975-09-25
NL154386B (nl) 1977-08-15
DE2318172A1 (de) 1973-10-25
NL7205132A (sv) 1973-10-19
IT980245B (it) 1974-09-30
FR2180901B1 (sv) 1979-03-30
FR2180901A1 (sv) 1973-11-30
DE2318172B2 (de) 1975-02-20

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