BE666614A - - Google Patents

Info

Publication number
BE666614A
BE666614A BE666614DA BE666614A BE 666614 A BE666614 A BE 666614A BE 666614D A BE666614D A BE 666614DA BE 666614 A BE666614 A BE 666614A
Authority
BE
Belgium
Application number
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 filed Critical
Publication of BE666614A publication Critical patent/BE666614A/xx

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
    • H04Q1/453—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling in which m-out-of-n signalling frequencies are transmitted
    • 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
    • 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)
  • Logic Circuits (AREA)
  • Fuses (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)
BE666614D 1964-07-09 1965-07-09 BE666614A (xx)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL6407780A NL6407780A (xx) 1964-07-09 1964-07-09

Publications (1)

Publication Number Publication Date
BE666614A true BE666614A (xx) 1966-01-10

Family

ID=19790484

Family Applications (1)

Application Number Title Priority Date Filing Date
BE666614D BE666614A (xx) 1964-07-09 1965-07-09

Country Status (7)

Country Link
US (1) US3470532A (xx)
BE (1) BE666614A (xx)
CH (1) CH443398A (xx)
DE (1) DE1290965B (xx)
GB (1) GB1064250A (xx)
NL (1) NL6407780A (xx)
NO (1) NO117699B (xx)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3688261A (en) * 1970-10-05 1972-08-29 Litton Business Systems Inc Logic processing system
US3710031A (en) * 1970-12-23 1973-01-09 Itt Multi frequency receiver
US3836727A (en) * 1972-01-27 1974-09-17 Philips Corp Signal receiver for receiving signals of different frequency
US3898616A (en) * 1974-07-18 1975-08-05 Bell Telephone Labor Inc Threshold logic circuit for detecting exactly M out of a set of N signals
DE2534636A1 (de) * 1975-08-02 1977-02-17 Telefonbau & Normalzeit Gmbh Schaltungsanordnung zum senden von anschaltinformationen, insbesondere in nebenstellenanlagen

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2675538A (en) * 1953-03-05 1954-04-13 Bell Telephone Labor Inc Checking circuit
US2966659A (en) * 1953-12-30 1960-12-27 Bell Telephone Labor Inc Signaling system
US2784393A (en) * 1954-02-26 1957-03-05 Bendix Aviat Corp Frequency multiplex telemetering system
FR1182796A (fr) * 1958-10-03 1959-06-29 Int Standard Electric Corp Perfectionnements aux systèmes de télétransmission par code
FR1254787A (xx) * 1959-04-23
NL267564A (xx) * 1960-08-22
US3143602A (en) * 1961-05-19 1964-08-04 Bell Telephone Labor Inc Multifrequency signal receiver
DE1144509B (de) * 1961-05-31 1963-02-28 Licentia Gmbh Einrichtung zur UEberwachung von Signalen

Also Published As

Publication number Publication date
CH443398A (de) 1967-09-15
GB1064250A (en) 1967-04-05
US3470532A (en) 1969-09-30
NL6407780A (xx) 1966-01-10
DE1290965B (de) 1969-03-20
NO117699B (xx) 1969-09-15

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