NL258188A - - Google Patents

Info

Publication number
NL258188A
NL258188A NL258188DA NL258188A NL 258188 A NL258188 A NL 258188A NL 258188D A NL258188D A NL 258188DA NL 258188 A NL258188 A NL 258188A
Authority
NL
Netherlands
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.)
Publication of NL258188A publication Critical patent/NL258188A/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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Telephonic Communication Services (AREA)
  • Control Of Amplification And Gain Control (AREA)
NL258188D 1959-11-27 NL258188A (xx)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES66021A DE1103400B (de) 1959-11-27 1959-11-27 Verfahren und Schaltungsanordnung zur Vermeidung von Stoerungen der Tonfrequenzzeichen infolge des durch elektrische Gabeln veranlassten Mitflusses in Signalkreisen von Fernsprech-anlagen mit Mehrfrequenzencodewahl

Publications (1)

Publication Number Publication Date
NL258188A true NL258188A (xx)

Family

ID=7498486

Family Applications (1)

Application Number Title Priority Date Filing Date
NL258188D NL258188A (xx) 1959-11-27

Country Status (5)

Country Link
BE (1) BE597354A (xx)
CH (1) CH387108A (xx)
DE (1) DE1103400B (xx)
GB (1) GB958385A (xx)
NL (1) NL258188A (xx)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE936879C (de) * 1952-07-15 1955-12-22 Heinrich Dipl-Ing Gerwig Selbstwaehlsystem
DE1007382B (de) * 1954-06-22 1957-05-02 Siemens Ag Elektrischer Signalempfaenger zum Empfang von Spannungen eines aus wenigstens zwei Frequenzen zusammengesetzten Signals
DE1015487B (de) * 1955-06-03 1957-09-12 Standard Elektrik Ag Schaltungsanordnung zum Ausgleich verschiedener Signalpegel in einer Empfangseinrichtung fuer Signale nach dem Frequenzkodesystem

Also Published As

Publication number Publication date
DE1103400B (de) 1961-03-30
BE597354A (fr) 1961-03-15
CH387108A (de) 1965-01-31
GB958385A (en) 1964-05-21

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