IT977993B - Tastiera di selezione elettroni ca per apparecchi telefonici con emissione di impulsi decadici intercambiabile con il disco com binatore - Google Patents

Tastiera di selezione elettroni ca per apparecchi telefonici con emissione di impulsi decadici intercambiabile con il disco com binatore

Info

Publication number
IT977993B
IT977993B IT19009/73A IT1900973A IT977993B IT 977993 B IT977993 B IT 977993B IT 19009/73 A IT19009/73 A IT 19009/73A IT 1900973 A IT1900973 A IT 1900973A IT 977993 B IT977993 B IT 977993B
Authority
IT
Italy
Prior art keywords
binator
decadic
interchangeable
com
pulses
Prior art date
Application number
IT19009/73A
Other languages
English (en)
Inventor
R Pipitone
V Montesi
Original Assignee
Sits Soc It Telecom Siemens
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 Sits Soc It Telecom Siemens filed Critical Sits Soc It Telecom Siemens
Priority to IT19009/73A priority Critical patent/IT977993B/it
Priority to ES419125A priority patent/ES419125A1/es
Priority to ZA737652*A priority patent/ZA737652B/xx
Priority to GB4818273A priority patent/GB1431326A/en
Priority to BR8267/73A priority patent/BR7308267D0/pt
Priority to DE2362721A priority patent/DE2362721A1/de
Priority to CH1767973A priority patent/CH572689A5/xx
Priority to AU63818/73A priority patent/AU480635B2/en
Priority to FR7346154A priority patent/FR2212725B1/fr
Priority to JP48143857A priority patent/JPS49103510A/ja
Priority to BE139274A priority patent/BE809113A/xx
Priority to CA189,289A priority patent/CA1000426A/en
Priority to US05/429,909 priority patent/US3969592A/en
Priority to NL7400089A priority patent/NL7400089A/xx
Application granted granted Critical
Publication of IT977993B publication Critical patent/IT977993B/it

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/26—Devices for calling a subscriber
    • H04M1/30—Devices which can set up and transmit only one digit at a time
    • H04M1/31—Devices which can set up and transmit only one digit at a time by interrupting current to generate trains of pulses; by periodically opening and closing contacts to generate trains of pulses
    • H04M1/312—Devices which can set up and transmit only one digit at a time by interrupting current to generate trains of pulses; by periodically opening and closing contacts to generate trains of pulses pulses produced by electronic circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Meter Arrangements (AREA)
  • Radio Relay Systems (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)
IT19009/73A 1973-01-03 1973-01-03 Tastiera di selezione elettroni ca per apparecchi telefonici con emissione di impulsi decadici intercambiabile con il disco com binatore IT977993B (it)

Priority Applications (14)

Application Number Priority Date Filing Date Title
IT19009/73A IT977993B (it) 1973-01-03 1973-01-03 Tastiera di selezione elettroni ca per apparecchi telefonici con emissione di impulsi decadici intercambiabile con il disco com binatore
ES419125A ES419125A1 (es) 1973-01-03 1973-09-27 Perfeccionamiento en las botoneras de seleccion electronicapara aparatos telefonicos.
ZA737652*A ZA737652B (en) 1973-01-03 1973-09-28 Electronic dialling keyboard for telephone sets with sending of decadic pulses interchangeable with the calling dial
GB4818273A GB1431326A (en) 1973-01-03 1973-10-16 Keyboard unit for telecommunication equipment
BR8267/73A BR7308267D0 (pt) 1973-01-03 1973-10-23 Teclado de selecao eletronica
DE2362721A DE2362721A1 (de) 1973-01-03 1973-12-17 Elektronische waehltastatur fuer einen dekadische impulse aussendenden fernsprechapparat
CH1767973A CH572689A5 (it) 1973-01-03 1973-12-18
AU63818/73A AU480635B2 (en) 1973-01-03 1973-12-20 A keyboard unit for telecommunication equipment
FR7346154A FR2212725B1 (it) 1973-01-03 1973-12-21
JP48143857A JPS49103510A (it) 1973-01-03 1973-12-25
BE139274A BE809113A (fr) 1973-01-03 1973-12-27 Clavier de selection electronique pour des appareils de telephone avec emission d'impulsions decadiques de telephone avec emission d'impulsions decadiques interchangeable avec le cadran d'appel
CA189,289A CA1000426A (en) 1973-01-03 1974-01-02 Electronic dialling keyboard for telephone sets with sending of decadic pulses, interchangeable with the calling dial
US05/429,909 US3969592A (en) 1973-01-03 1974-01-02 Pushbutton-controlled call-number selector for dial-equipped telephone
NL7400089A NL7400089A (it) 1973-01-03 1974-01-03

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT19009/73A IT977993B (it) 1973-01-03 1973-01-03 Tastiera di selezione elettroni ca per apparecchi telefonici con emissione di impulsi decadici intercambiabile con il disco com binatore

Publications (1)

Publication Number Publication Date
IT977993B true IT977993B (it) 1974-09-20

Family

ID=11153811

Family Applications (1)

Application Number Title Priority Date Filing Date
IT19009/73A IT977993B (it) 1973-01-03 1973-01-03 Tastiera di selezione elettroni ca per apparecchi telefonici con emissione di impulsi decadici intercambiabile con il disco com binatore

Country Status (13)

Country Link
US (1) US3969592A (it)
JP (1) JPS49103510A (it)
BE (1) BE809113A (it)
BR (1) BR7308267D0 (it)
CA (1) CA1000426A (it)
CH (1) CH572689A5 (it)
DE (1) DE2362721A1 (it)
ES (1) ES419125A1 (it)
FR (1) FR2212725B1 (it)
GB (1) GB1431326A (it)
IT (1) IT977993B (it)
NL (1) NL7400089A (it)
ZA (1) ZA737652B (it)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2291656A1 (fr) * 1974-11-14 1976-06-11 Telic Clavier d'appel
US4008379A (en) * 1975-02-14 1977-02-15 San/Bar Corporation Touch-pad to dial conversion unit
DE2522957C3 (de) * 1975-05-23 1978-06-15 Siemens Ag, 1000 Berlin Und 8000 Muenchen Schaltungsanordnung für über ihre Anschlußleitungen gespeiste Teilnehmerstationen mit Impulstastwahl in Fernmelde-, insbesondere Fernsprechanlagen
DE2541903C3 (de) * 1975-09-19 1979-09-06 Siemens Ag, 1000 Berlin Und 8000 Muenchen Schaltungsanordnung für über ihre AnschluBleitiuigen gespeiste Teilnehmerstationen mit Impulstastwahl in Fernmelde-, insbesondere Fernsprechanlagen
US4199750A (en) * 1975-11-10 1980-04-22 Hitachi, Ltd. Key input circuit capable of roll-over operation
US4174891A (en) * 1976-11-15 1979-11-20 Bell & Howell Company Microfilm reader/printer
EP0004901B1 (de) * 1978-04-14 1982-02-17 Siemens Aktiengesellschaft Schaltungsanordnung für über Anschlussleitungen gespeiste Teilnehmerstationen mit Wähleinrichtungen in Fernmelde-, insbesondere Fernsprechanlagen
JPS6211099Y2 (it) * 1978-05-09 1987-03-16
US4300829A (en) * 1979-10-30 1981-11-17 Xerox Corporation Cascade illumination and switch control console
JPS58168394A (ja) * 1982-03-30 1983-10-04 Fujitsu Ltd フツキング機能付パルスダイヤラ
US4413159A (en) * 1982-04-02 1983-11-01 Bell Telephone Laboratories, Incorporated Dial pulsing circuit
JPS59147357U (ja) * 1983-03-23 1984-10-02 株式会社大興電機製作所 ダイヤルインパルス送出回路
JPH0795773B2 (ja) * 1985-07-18 1995-10-11 アルカテル・エヌ・ブイ 電話機ラインスイッチ
US7068777B1 (en) * 1999-04-08 2006-06-27 Agere Systems Inc. True DTMF dialer

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3488451A (en) * 1967-04-05 1970-01-06 Bell Telephone Labor Inc Call transmitter
GB1236961A (en) * 1968-01-12 1971-06-23 Gen Electric Co Ltd Improvements in or relating to electric impulse transmitters
JPS5032569B1 (it) * 1968-09-04 1975-10-22
ZA714585B (en) * 1970-07-21 1972-03-29 Modern Tel Ltd Electrical storage circuit
GB1395577A (en) * 1972-05-11 1975-05-29 Standard Telephones Cables Ltd Telephones
US3787639A (en) * 1972-11-16 1974-01-22 Northern Electric Co Pushbutton electronic pulsing dial

Also Published As

Publication number Publication date
GB1431326A (en) 1976-04-07
FR2212725A1 (it) 1974-07-26
NL7400089A (it) 1974-07-05
US3969592A (en) 1976-07-13
CA1000426A (en) 1976-11-23
ZA737652B (en) 1974-08-28
BE809113A (fr) 1974-04-16
FR2212725B1 (it) 1976-11-19
ES419125A1 (es) 1976-04-16
CH572689A5 (it) 1976-02-13
BR7308267D0 (pt) 1974-08-29
JPS49103510A (it) 1974-10-01
AU6381873A (en) 1975-06-26
DE2362721A1 (de) 1974-07-11

Similar Documents

Publication Publication Date Title
NL165880C (nl) Naleveringskathode.
IT987335B (it) Disposizione di selezione telefonica
IT977993B (it) Tastiera di selezione elettroni ca per apparecchi telefonici con emissione di impulsi decadici intercambiabile con il disco com binatore
ES221023Y (es) Un conjunto electrico.
IT987822B (it) Composizione isolante per alte tensioni
CH546494A (de) Metallgekapselte hochspannungsschaltanlage.
NL182598C (nl) Meerfasen-spanningsstootonderdrukker.
NL7610384A (nl) Met roentgenstralen werkende fluorescentiespek- trometer.
CH431614A (de) Zeitbasisschaltung
IT1017193B (it) Attenuatore di corrente
NL7416455A (nl) Hoogspanningsinrichting.
NL7411772A (nl) Hoogspanningstransformator.
BE815760A (fr) Ecran luminescent
IT1027997B (it) Procedimento per fabbricare una soluzione di filatura acrilica
CH558604A (de) Gekapselte hochspannungsschaltanlage.
SE7503623L (sv) Hogfrekvent hogspenningskella.
SE387005B (sv) Elektrisk hogspenningsapparat
ES188795Y (es) Una disposicion de elementos sustentantes de hormigon.
BE815761A (fr) Ecran luminescent
SE393217B (sv) Elektrisk hogspenningsapparat
AR194210A1 (es) Un conmutador electrico
IT972553B (it) Generatore di frequenze per sele zione a tastiera particolarmente per apparecchi telefonici
AR201901A1 (es) Un conmutador electrico
CA689482A (en) Inert electrodes for electro-chemical devices
SE385548B (sv) Emissionselektrod