DE2145886A1 - - Google Patents

Info

Publication number
DE2145886A1
DE2145886A1 DE19712145886 DE2145886A DE2145886A1 DE 2145886 A1 DE2145886 A1 DE 2145886A1 DE 19712145886 DE19712145886 DE 19712145886 DE 2145886 A DE2145886 A DE 2145886A DE 2145886 A1 DE2145886 A1 DE 2145886A1
Authority
DE
Germany
Legal status (The legal status 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 status listed.)
Granted
Application number
DE19712145886
Other languages
German (de)
Other versions
DE2145886C2 (de
DE2145886B2 (de
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
Priority to BE788813D priority Critical patent/BE788813A/xx
Application filed filed Critical
Priority to DE19712145886 priority patent/DE2145886C2/de
Priority to AT713372A priority patent/AT328516B/de
Priority to CH545569D priority patent/CH545569A/xx
Priority to FR7232114A priority patent/FR2153943A5/fr
Priority to LU66057D priority patent/LU66057A1/xx
Priority to IT2907772A priority patent/IT967367B/it
Priority to GB4245972A priority patent/GB1402119A/en
Priority to SE1182472A priority patent/SE397461B/xx
Priority to NL7212486A priority patent/NL7212486A/xx
Publication of DE2145886A1 publication Critical patent/DE2145886A1/de
Publication of DE2145886B2 publication Critical patent/DE2145886B2/de
Application granted granted Critical
Publication of DE2145886C2 publication Critical patent/DE2145886C2/de
Expired legal-status Critical Current

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)
  • Telephone Function (AREA)
DE19712145886 1971-09-14 1971-09-14 Sprachgeschützter frequenzselektiver Zeichenempfänger für Fernmelde-, insbesondere Fernsprechanlagen Expired DE2145886C2 (de)

Priority Applications (10)

Application Number Priority Date Filing Date Title
BE788813D BE788813A (fr) 1971-09-14 Recepteur de signaux selectif en frequence et protege contre les signaux vocaux pour des installations de telecommunications, notamment des installations de telephonie
DE19712145886 DE2145886C2 (de) 1971-09-14 1971-09-14 Sprachgeschützter frequenzselektiver Zeichenempfänger für Fernmelde-, insbesondere Fernsprechanlagen
AT713372A AT328516B (de) 1971-09-14 1972-08-17 Schaltungsanordnung fur sprachgeschutzte frequenzselektive zeichenempfanger in fernmelde-, insbesondere fernsprechanlagen
CH545569D CH545569A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1971-09-14 1972-08-21
FR7232114A FR2153943A5 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1971-09-14 1972-09-11
IT2907772A IT967367B (it) 1971-09-14 1972-09-12 Ricevitore di segnali con selezio ne di frequenza protetto contro disturbi vocali per impianti di telecomunicazioni specie per impianti telefonici
LU66057D LU66057A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1971-09-14 1972-09-12
GB4245972A GB1402119A (en) 1971-09-14 1972-09-13 Telecommunications characteristics receivers
SE1182472A SE397461B (sv) 1971-09-14 1972-09-13 Frekvensselektiv signalmottagare for teleanleggningar
NL7212486A NL7212486A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1971-09-14 1972-09-14

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19712145886 DE2145886C2 (de) 1971-09-14 1971-09-14 Sprachgeschützter frequenzselektiver Zeichenempfänger für Fernmelde-, insbesondere Fernsprechanlagen

Publications (3)

Publication Number Publication Date
DE2145886A1 true DE2145886A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1972-12-28
DE2145886B2 DE2145886B2 (de) 1972-12-28
DE2145886C2 DE2145886C2 (de) 1978-12-14

Family

ID=5819508

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19712145886 Expired DE2145886C2 (de) 1971-09-14 1971-09-14 Sprachgeschützter frequenzselektiver Zeichenempfänger für Fernmelde-, insbesondere Fernsprechanlagen

Country Status (1)

Country Link
DE (1) DE2145886C2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Also Published As

Publication number Publication date
DE2145886C2 (de) 1978-12-14
DE2145886B2 (de) 1972-12-28

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Legal Events

Date Code Title Description
8339 Ceased/non-payment of the annual fee