BE818725A - Selectieve tekenontvanger voor communicatiestelsels - Google Patents

Selectieve tekenontvanger voor communicatiestelsels

Info

Publication number
BE818725A
BE818725A BE2053802A BE2053802A BE818725A BE 818725 A BE818725 A BE 818725A BE 2053802 A BE2053802 A BE 2053802A BE 2053802 A BE2053802 A BE 2053802A BE 818725 A BE818725 A BE 818725A
Authority
BE
Belgium
Prior art keywords
communication schemes
sign receiver
selective sign
selective
receiver
Prior art date
Application number
BE2053802A
Other languages
English (en)
Dutch (nl)
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 BE818725A publication Critical patent/BE818725A/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
    • H04Q1/457—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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Measuring Frequencies, Analyzing Spectra (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Mobile Radio Communication Systems (AREA)
BE2053802A 1973-08-16 1974-08-12 Selectieve tekenontvanger voor communicatiestelsels BE818725A (nl)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19732341225 DE2341225B2 (de) 1973-08-16 1973-08-16 Selektiver zeichenempfaenger fuer fernmelde-, insbesondere fernsprechanlagen

Publications (1)

Publication Number Publication Date
BE818725A true BE818725A (nl) 1975-02-12

Family

ID=5889793

Family Applications (1)

Application Number Title Priority Date Filing Date
BE2053802A BE818725A (nl) 1973-08-16 1974-08-12 Selectieve tekenontvanger voor communicatiestelsels

Country Status (14)

Country Link
US (1) US3935395A (cg-RX-API-DMAC7.html)
BE (1) BE818725A (cg-RX-API-DMAC7.html)
BR (1) BR7406644D0 (cg-RX-API-DMAC7.html)
CH (1) CH586986A5 (cg-RX-API-DMAC7.html)
DE (1) DE2341225B2 (cg-RX-API-DMAC7.html)
DK (1) DK432374A (cg-RX-API-DMAC7.html)
ES (1) ES429267A1 (cg-RX-API-DMAC7.html)
FR (1) FR2241075B1 (cg-RX-API-DMAC7.html)
GB (1) GB1460996A (cg-RX-API-DMAC7.html)
HK (1) HK44177A (cg-RX-API-DMAC7.html)
NL (1) NL7410653A (cg-RX-API-DMAC7.html)
NO (1) NO742913L (cg-RX-API-DMAC7.html)
SE (1) SE7410344L (cg-RX-API-DMAC7.html)
ZA (1) ZA744858B (cg-RX-API-DMAC7.html)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2540859C2 (de) * 1975-09-13 1984-01-12 Standard Elektrik Lorenz Ag, 7000 Stuttgart Schaltungsanordnung für einen selektiven Zeichenempfänger, insbesondere für Fernsprechanlagen
US4021620A (en) * 1975-12-04 1977-05-03 Rca Corporation Multifrequency signal receiver with digital tone receiver
US4061885A (en) * 1975-12-17 1977-12-06 Motorola, Inc. Digital tone decoder
US4158110A (en) * 1977-08-25 1979-06-12 Tone Commander Systems, Inc. Tone selective key telephone intercom system including digital tone detector
IT1097753B (it) * 1978-07-28 1985-08-31 Chimosa Chimica Organica Spa Compcsti piperidinici, processo per la loro preparazione e loro impiego come stabil izzanti per polimeri sintetici
FR2485843B1 (fr) * 1980-06-25 1986-11-07 Cit Alcatel Recepteur numerique de frequences
DE3115151A1 (de) * 1981-04-15 1982-11-11 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Schaltungsanordnung zur auswertung von aus mehreren gleichzeitig uebertragenen wechselstroemen unterschiedlicher signalfrequenzen gebildeten wechselstromsignalen, in fernmeldeanlagen
US4675898A (en) * 1984-12-07 1987-06-23 Buscom Systems, Inc. Single tone telephone receiver
US5610978A (en) * 1994-12-30 1997-03-11 Mitel Corporation Ring discriminator

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3537001A (en) * 1968-12-05 1970-10-27 Bell Telephone Labor Inc Multifrequency tone detector
US3760269A (en) * 1972-07-31 1973-09-18 Gte Automatic Electric Lab Inc Multi-frequency tone detector
US3790720A (en) * 1972-10-27 1974-02-05 Northern Electric Co Digital decoder for multiple frequency telephone signalling

Also Published As

Publication number Publication date
DE2341225B2 (de) 1976-10-28
FR2241075B1 (cg-RX-API-DMAC7.html) 1978-02-17
NO742913L (cg-RX-API-DMAC7.html) 1975-03-17
SE7410344L (cg-RX-API-DMAC7.html) 1975-02-17
CH586986A5 (cg-RX-API-DMAC7.html) 1977-04-15
DK432374A (cg-RX-API-DMAC7.html) 1975-04-28
US3935395A (en) 1976-01-27
ES429267A1 (es) 1976-08-16
GB1460996A (en) 1977-01-06
NL7410653A (nl) 1975-02-18
FR2241075A1 (cg-RX-API-DMAC7.html) 1975-03-14
HK44177A (en) 1977-09-09
ZA744858B (en) 1975-08-27
DE2341225A1 (de) 1975-02-20
BR7406644D0 (pt) 1975-09-09

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