IT1102025B - IDENTIFICATION DEVICE OF A COMPONENT IN AN ELECTRIC SIGNAL - Google Patents

IDENTIFICATION DEVICE OF A COMPONENT IN AN ELECTRIC SIGNAL

Info

Publication number
IT1102025B
IT1102025B IT47825/78A IT4782578A IT1102025B IT 1102025 B IT1102025 B IT 1102025B IT 47825/78 A IT47825/78 A IT 47825/78A IT 4782578 A IT4782578 A IT 4782578A IT 1102025 B IT1102025 B IT 1102025B
Authority
IT
Italy
Prior art keywords
component
electric signal
identification device
identification
electric
Prior art date
Application number
IT47825/78A
Other languages
Italian (it)
Other versions
IT7847825A0 (en
Original Assignee
Thomson Csf
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 Thomson Csf filed Critical Thomson Csf
Publication of IT7847825A0 publication Critical patent/IT7847825A0/en
Application granted granted Critical
Publication of IT1102025B publication Critical patent/IT1102025B/en

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)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Telephonic Communication Services (AREA)
  • Dc Digital Transmission (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
IT47825/78A 1977-01-28 1978-01-27 IDENTIFICATION DEVICE OF A COMPONENT IN AN ELECTRIC SIGNAL IT1102025B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7702453A FR2379218A1 (en) 1977-01-28 1977-01-28 DEVICE FOR IDENTIFYING A COMPONENT IN AN ELECTRIC SIGNAL AND TELEPHONE NUMBERING RECEIVER USING SUCH A DEVICE

Publications (2)

Publication Number Publication Date
IT7847825A0 IT7847825A0 (en) 1978-01-27
IT1102025B true IT1102025B (en) 1985-10-07

Family

ID=9186031

Family Applications (1)

Application Number Title Priority Date Filing Date
IT47825/78A IT1102025B (en) 1977-01-28 1978-01-27 IDENTIFICATION DEVICE OF A COMPONENT IN AN ELECTRIC SIGNAL

Country Status (7)

Country Link
BE (1) BE863348A (en)
DE (1) DE2803641A1 (en)
FR (1) FR2379218A1 (en)
GB (1) GB1562168A (en)
IT (1) IT1102025B (en)
NL (1) NL7800883A (en)
SE (1) SE7800867L (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4339711A (en) * 1979-07-10 1982-07-13 Victor Company Of Japan, Ltd. Spectrum displaying apparatus for multichannel signals
CH655819A5 (en) * 1981-11-26 1986-05-15 Autophon Ag EVALUATOR FOR DETECTING A SIGNAL OF A SPECIFIC FREQUENCY.

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3215934A (en) * 1960-10-21 1965-11-02 Sylvania Electric Prod System for quantizing intelligence according to ratio of outputs of adjacent band-pass filters
DE2361925A1 (en) * 1973-12-13 1975-06-26 Licentia Gmbh Automatic frequency selection circuit - has several resonant circuits corresponding to number of frequencies

Also Published As

Publication number Publication date
BE863348A (en) 1978-05-16
IT7847825A0 (en) 1978-01-27
GB1562168A (en) 1980-03-05
SE7800867L (en) 1978-07-29
NL7800883A (en) 1978-08-01
FR2379218A1 (en) 1978-08-25
DE2803641A1 (en) 1978-08-24
FR2379218B1 (en) 1982-02-12

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