NL7410653A - Selectieve tekenontvanger voor communicatie- stelsels, in het bijzonder telefoniestelsels. - Google Patents

Selectieve tekenontvanger voor communicatie- stelsels, in het bijzonder telefoniestelsels.

Info

Publication number
NL7410653A
NL7410653A NL7410653A NL7410653A NL7410653A NL 7410653 A NL7410653 A NL 7410653A NL 7410653 A NL7410653 A NL 7410653A NL 7410653 A NL7410653 A NL 7410653A NL 7410653 A NL7410653 A NL 7410653A
Authority
NL
Netherlands
Prior art keywords
communication systems
telephone system
especially telephone
sign receiver
selective sign
Prior art date
Application number
NL7410653A
Other languages
English (en)
Dutch (nl)
Original Assignee
Int Standard Electric Corp
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 Int Standard Electric Corp filed Critical Int Standard Electric Corp
Publication of NL7410653A publication Critical patent/NL7410653A/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)
NL7410653A 1973-08-16 1974-08-08 Selectieve tekenontvanger voor communicatie- stelsels, in het bijzonder telefoniestelsels. NL7410653A (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
NL7410653A true NL7410653A (nl) 1975-02-18

Family

ID=5889793

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7410653A NL7410653A (nl) 1973-08-16 1974-08-08 Selectieve tekenontvanger voor communicatie- stelsels, in het bijzonder telefoniestelsels.

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
BE818725A (nl) 1975-02-12
GB1460996A (en) 1977-01-06
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

Similar Documents

Publication Publication Date Title
CA936291A (en) P.c.m. telephone system
NL164443B (nl) Tijdsverdeeld tweedraads- en tweewegs-duplexcommunica- tiestelsel.
NL169017C (nl) Communicatiestelsel.
SE386338B (sv) Kommunikationsanleggning.
ZA744859B (en) Method for frequency-recognition in selective signal receivers for use in telecommunication, particularly telephone systems
NL161946C (nl) Stelsel voor het in frequentie-multiplex overdragen van telefoonkanalen over een tweedraadslijn in duplex- -verkeer.
NL7414177A (nl) Afc-systeem voor satellietcommunicatiesysteem.
NL170076B (nl) Satellietcommunicatiestelsel.
NL169016C (nl) Communicatiestelsel.
HK44177A (en) Selective signal receiver for use in telecommunication, particularly telephone systems
DK136130B (da) Synkroniseringsudstyr til telegrafanlæg, især trådløse telegrafanlæg.
NL177547C (nl) Telefoonstelsel.
AU486469B2 (en) Selective signal receiver for use in telecommunication, particularly telephone systems
BE846033R (nl) Selectieve texenontvanger voor communicatiestelsels, in het bijzonder telefoniestelsels
AU452510B2 (en) P. c. m. telephone system
NL157772B (nl) Telecommunicatieverbindingsstelsel, in het bijzonder telefoonverbindingsstelsel.
NL157480B (nl) Schakeling voor een communicatie-verbindingsstelsel, in het bijzonder telefoonstelsel.
NL176419C (nl) Tijdmultiplexcommunicatiestelsel.
NL151869B (nl) Gestel voor het opnemen van elektrische constructiegroepen voor een communicatiestelsel, in het bijzonder gestel voor een telefoonbedienplaats.
NL155699B (nl) Schakeling voor een telecommunicatiestelsel, in het bijzonder huistelefoonstelsel.
NL153408B (nl) Schakeling voor een telecommunicatiestelsel, in het bijzonder telefoonstelsel.
NL155421B (nl) Draaggolfcommunicatiestelsel.
AU7203674A (en) Selective signal receiver for use in telecommunication, particularly telephone systems
NL158351B (nl) Schakeling voor een centraal bestuurd telecommunicatie-, in het bijzonder telefoonverbindingsstelsel.
NL156258B (nl) Communicatiestelsel.

Legal Events

Date Code Title Description
BV The patent application has lapsed