IT976274B - Ricevitore per sistemi di segnala zione e frequenze multiple - Google Patents

Ricevitore per sistemi di segnala zione e frequenze multiple

Info

Publication number
IT976274B
IT976274B IT7118972A IT7118972A IT976274B IT 976274 B IT976274 B IT 976274B IT 7118972 A IT7118972 A IT 7118972A IT 7118972 A IT7118972 A IT 7118972A IT 976274 B IT976274 B IT 976274B
Authority
IT
Italy
Prior art keywords
receiver
multiple frequencies
signaling systems
signaling
systems
Prior art date
Application number
IT7118972A
Other languages
English (en)
Italian (it)
Original Assignee
Gen Electric
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 Gen Electric filed Critical Gen Electric
Application granted granted Critical
Publication of IT976274B publication Critical patent/IT976274B/it

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)
  • Monitoring And Testing Of Transmission In General (AREA)
  • Manipulation Of Pulses (AREA)
IT7118972A 1972-01-06 1972-12-29 Ricevitore per sistemi di segnala zione e frequenze multiple IT976274B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB71372A GB1360301A (en) 1972-01-06 1972-01-06 Receivers for plural f'equency signalling systems

Publications (1)

Publication Number Publication Date
IT976274B true IT976274B (it) 1974-08-20

Family

ID=9709243

Family Applications (1)

Application Number Title Priority Date Filing Date
IT7118972A IT976274B (it) 1972-01-06 1972-12-29 Ricevitore per sistemi di segnala zione e frequenze multiple

Country Status (6)

Country Link
CA (1) CA1018601A (en:Method)
CH (1) CH567312A5 (en:Method)
DE (1) DE2300262B2 (en:Method)
FR (1) FR2167750B1 (en:Method)
GB (1) GB1360301A (en:Method)
IT (1) IT976274B (en:Method)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3328027A1 (de) * 1983-08-03 1985-02-21 Siemens AG, 1000 Berlin und 8000 München Schaltungsanordnung zum erkennen von frequenzen eines zugefuehrten signals

Also Published As

Publication number Publication date
DE2300262A1 (de) 1973-07-19
GB1360301A (en) 1974-07-17
FR2167750A1 (en:Method) 1973-08-24
FR2167750B1 (en:Method) 1977-12-30
CH567312A5 (en:Method) 1975-09-30
CA1018601A (en) 1977-10-04
AU5044172A (en) 1973-08-23
DE2300262C3 (en:Method) 1975-04-03
DE2300262B2 (de) 1974-07-25

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