DE2341225B2 - Selektiver zeichenempfaenger fuer fernmelde-, insbesondere fernsprechanlagen - Google Patents

Selektiver zeichenempfaenger fuer fernmelde-, insbesondere fernsprechanlagen

Info

Publication number
DE2341225B2
DE2341225B2 DE19732341225 DE2341225A DE2341225B2 DE 2341225 B2 DE2341225 B2 DE 2341225B2 DE 19732341225 DE19732341225 DE 19732341225 DE 2341225 A DE2341225 A DE 2341225A DE 2341225 B2 DE2341225 B2 DE 2341225B2
Authority
DE
Germany
Prior art keywords
character
counter
voltage
frequency
periods
Prior art date
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.)
Withdrawn
Application number
DE19732341225
Other languages
German (de)
English (en)
Other versions
DE2341225A1 (de
Inventor
Wolf Dipl.-Ing. 7015 Korntal; Ball Herbert Dipl.-Ing. 7000 Stuttgart OhI
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Alcatel Lucent Deutschland AG
Original Assignee
Standard Elektrik Lorenz AG
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 Standard Elektrik Lorenz AG filed Critical Standard Elektrik Lorenz AG
Priority to DE19732341225 priority Critical patent/DE2341225B2/de
Priority to ZA00744858A priority patent/ZA744858B/xx
Priority to FR7426542A priority patent/FR2241075B1/fr
Priority to US05/494,287 priority patent/US3935395A/en
Priority to GB3455674A priority patent/GB1460996A/en
Priority to NL7410653A priority patent/NL7410653A/xx
Priority to BR6644/74A priority patent/BR7406644D0/pt
Priority to BE2053802A priority patent/BE818725A/xx
Priority to NO742913A priority patent/NO742913L/no
Priority to DK432374A priority patent/DK432374A/da
Priority to SE7410344A priority patent/SE7410344L/xx
Priority to ES429267A priority patent/ES429267A1/es
Priority to CH1116674A priority patent/CH586986A5/xx
Publication of DE2341225A1 publication Critical patent/DE2341225A1/de
Publication of DE2341225B2 publication Critical patent/DE2341225B2/de
Priority to HK441/77A priority patent/HK44177A/xx
Withdrawn legal-status Critical Current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)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Mobile Radio Communication Systems (AREA)
DE19732341225 1973-08-16 1973-08-16 Selektiver zeichenempfaenger fuer fernmelde-, insbesondere fernsprechanlagen Withdrawn DE2341225B2 (de)

Priority Applications (14)

Application Number Priority Date Filing Date Title
DE19732341225 DE2341225B2 (de) 1973-08-16 1973-08-16 Selektiver zeichenempfaenger fuer fernmelde-, insbesondere fernsprechanlagen
ZA00744858A ZA744858B (en) 1973-08-16 1974-07-30 Selective signal receiver for use in telecommunication, particularly telephone systems
FR7426542A FR2241075B1 (cg-RX-API-DMAC7.html) 1973-08-16 1974-07-31
US05/494,287 US3935395A (en) 1973-08-16 1974-08-02 Selective signal receiver for use in telecommunication systems
GB3455674A GB1460996A (en) 1973-08-16 1974-08-06 Selective signal receiver for use in telecommunication particu larly telephone systems
NL7410653A NL7410653A (nl) 1973-08-16 1974-08-08 Selectieve tekenontvanger voor communicatie- stelsels, in het bijzonder telefoniestelsels.
BE2053802A BE818725A (nl) 1973-08-16 1974-08-12 Selectieve tekenontvanger voor communicatiestelsels
BR6644/74A BR7406644D0 (pt) 1973-08-16 1974-08-12 Receptor seletivo de sinal para uso em telecomunicacoes particularmente em metodos telefonicos
NO742913A NO742913L (cg-RX-API-DMAC7.html) 1973-08-16 1974-08-14
DK432374A DK432374A (cg-RX-API-DMAC7.html) 1973-08-16 1974-08-14
SE7410344A SE7410344L (cg-RX-API-DMAC7.html) 1973-08-16 1974-08-14
ES429267A ES429267A1 (es) 1973-08-16 1974-08-14 Mejoras en un receptor de senal digital selectivo para su uso en sistemas de telecomunicacion.
CH1116674A CH586986A5 (cg-RX-API-DMAC7.html) 1973-08-16 1974-08-15
HK441/77A HK44177A (en) 1973-08-16 1977-09-01 Selective signal receiver for use in telecommunication, particularly telephone systems

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 (2)

Publication Number Publication Date
DE2341225A1 DE2341225A1 (de) 1975-02-20
DE2341225B2 true DE2341225B2 (de) 1976-10-28

Family

ID=5889793

Family Applications (1)

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

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)

Cited By (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

Families Citing this family (8)

* 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
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

Cited By (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
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
BE818725A (nl) 1975-02-12
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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