CH534468A - Empfänger für Mehrfrequenzcode-Übertragungsverfahren - Google Patents

Empfänger für Mehrfrequenzcode-Übertragungsverfahren

Info

Publication number
CH534468A
CH534468A CH881471A CH881471A CH534468A CH 534468 A CH534468 A CH 534468A CH 881471 A CH881471 A CH 881471A CH 881471 A CH881471 A CH 881471A CH 534468 A CH534468 A CH 534468A
Authority
CH
Switzerland
Prior art keywords
receiver
transmission methods
frequency code
code transmission
frequency
Prior art date
Application number
CH881471A
Other languages
English (en)
Inventor
Heini Dipl Ing Meyr
Schultze Ernst Dr Math
Original Assignee
Hasler Ag
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 Hasler Ag filed Critical Hasler Ag
Priority to CH881471A priority Critical patent/CH534468A/de
Priority to DE19712141867 priority patent/DE2141867A1/de
Priority to GB2322572A priority patent/GB1349818A/en
Priority to FR7220703A priority patent/FR2141804A1/fr
Priority to IT6888772A priority patent/IT959148B/it
Publication of CH534468A publication Critical patent/CH534468A/de

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
    • H04L27/30—Systems using multi-frequency codes wherein each code element is represented by a combination of frequencies

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
CH881471A 1971-06-18 1971-06-18 Empfänger für Mehrfrequenzcode-Übertragungsverfahren CH534468A (de)

Priority Applications (5)

Application Number Priority Date Filing Date Title
CH881471A CH534468A (de) 1971-06-18 1971-06-18 Empfänger für Mehrfrequenzcode-Übertragungsverfahren
DE19712141867 DE2141867A1 (de) 1971-06-18 1971-08-21 Empfänger für Mehrfrequenzcode-Übertragungsverfahren
GB2322572A GB1349818A (en) 1971-06-18 1972-05-17 Receiver for multi-frequency code transmission proceses
FR7220703A FR2141804A1 (de) 1971-06-18 1972-06-08
IT6888772A IT959148B (it) 1971-06-18 1972-06-13 Ricevitore per processi di trasmis sione codificata a frequenze multi ple

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH881471A CH534468A (de) 1971-06-18 1971-06-18 Empfänger für Mehrfrequenzcode-Übertragungsverfahren

Publications (1)

Publication Number Publication Date
CH534468A true CH534468A (de) 1973-02-28

Family

ID=4345037

Family Applications (1)

Application Number Title Priority Date Filing Date
CH881471A CH534468A (de) 1971-06-18 1971-06-18 Empfänger für Mehrfrequenzcode-Übertragungsverfahren

Country Status (5)

Country Link
CH (1) CH534468A (de)
DE (1) DE2141867A1 (de)
FR (1) FR2141804A1 (de)
GB (1) GB1349818A (de)
IT (1) IT959148B (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2299769A1 (fr) * 1975-01-31 1976-08-27 Telecommunications Sa Procede d'application
US4839842A (en) * 1987-07-24 1989-06-13 Advanced Micro Devices Digital tone detection and generation

Also Published As

Publication number Publication date
DE2141867A1 (de) 1972-12-21
GB1349818A (en) 1974-04-10
FR2141804A1 (de) 1973-01-26
IT959148B (it) 1973-11-10

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Legal Events

Date Code Title Description
PL Patent ceased