DE3065721D1 - Keyboard dial for an automatic telephone apparatus using analogue techniques - Google Patents

Keyboard dial for an automatic telephone apparatus using analogue techniques

Info

Publication number
DE3065721D1
DE3065721D1 DE8080107158T DE3065721T DE3065721D1 DE 3065721 D1 DE3065721 D1 DE 3065721D1 DE 8080107158 T DE8080107158 T DE 8080107158T DE 3065721 T DE3065721 T DE 3065721T DE 3065721 D1 DE3065721 D1 DE 3065721D1
Authority
DE
Germany
Prior art keywords
telephone apparatus
automatic telephone
oscillator
analogue techniques
keyboard dial
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.)
Expired
Application number
DE8080107158T
Other languages
English (en)
Inventor
Jacky Suszylo
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 CIT SA
Original Assignee
Alcatel CIT SA
Compagnie Industrielle de Telecommunication CIT Alcatel SA
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 Alcatel CIT SA, Compagnie Industrielle de Telecommunication CIT Alcatel SA filed Critical Alcatel CIT SA
Application granted granted Critical
Publication of DE3065721D1 publication Critical patent/DE3065721D1/de
Expired legal-status Critical Current

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
    • H04M1/50—Devices which can set up and transmit only one digit at a time by generating or selecting currents of predetermined frequencies or combinations of frequencies
DE8080107158T 1979-11-23 1980-11-18 Keyboard dial for an automatic telephone apparatus using analogue techniques Expired DE3065721D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7928900A FR2470497A1 (fr) 1979-11-23 1979-11-23 Clavier d'appel de poste telephonique automatique utilisant des techniques analogiques

Publications (1)

Publication Number Publication Date
DE3065721D1 true DE3065721D1 (en) 1983-12-29

Family

ID=9232022

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8080107158T Expired DE3065721D1 (en) 1979-11-23 1980-11-18 Keyboard dial for an automatic telephone apparatus using analogue techniques

Country Status (6)

Country Link
US (1) US4327255A (de)
EP (1) EP0029574B1 (de)
JP (1) JPS5686561A (de)
AT (1) ATE5455T1 (de)
DE (1) DE3065721D1 (de)
FR (1) FR2470497A1 (de)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6047432B2 (ja) * 1981-10-02 1985-10-22 日産自動車株式会社 電子錠装置
JPS61196080A (ja) * 1985-02-21 1986-08-30 日産自動車株式会社 無線式利用者識別装置
JPS6238035A (ja) * 1985-08-12 1987-02-19 Nissan Motor Co Ltd 薄板型携帯機
JPS6278379A (ja) * 1985-09-30 1987-04-10 日産自動車株式会社 車両用施解錠制御装置
JPH0625503B2 (ja) * 1986-06-20 1994-04-06 日産自動車株式会社 解錠制御装置
FR2649268B2 (fr) * 1989-06-28 1991-08-23 France Etat Procede et dispositif de decodage de donnees duobinaires emises par salves
JP3069419B2 (ja) * 1991-11-27 2000-07-24 ローム株式会社 クロスポイントミキサ及びこれを備える電話機
JP2968887B2 (ja) * 1992-08-06 1999-11-02 ローム株式会社 クロスポイントスイッチ
SE508136C2 (sv) * 1996-12-19 1998-08-31 Ericsson Telefon Ab L M Anordning och förfarande för tangentbordsavläsning
KR101718214B1 (ko) * 2015-06-09 2017-03-20 한국과학기술원 사물인터넷용 초저전력 유연압전 음성인식 센서

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA792305A (en) * 1964-12-03 1968-08-13 N.V. Philips Gloeilampenfabrieken Transmitting arrangement for use in tone frequency pushbutton selection systems
US4086588A (en) * 1972-06-02 1978-04-25 Canon Kabushiki Kaisha Signal generator
US3971896A (en) * 1973-11-16 1976-07-27 Iwasaki Tsushinki Kabushiki Kaisha Two-tone generator using switching transistors in LC resonant circuits controlled by push-button
US4007459A (en) * 1975-07-10 1977-02-08 Bell Telephone Laboratories, Incorporated Multitone pushbutton dial phase shift scanning circuitry
US3978474A (en) * 1975-07-15 1976-08-31 Illinois Tool Works Inc. Keyboard with n-key lockout and two-key rollover protection
US4196318A (en) * 1978-09-29 1980-04-01 Bell Telephone Laboratories, Incorporated Electronically-switched multifrequency generator for providing tone signaling

Also Published As

Publication number Publication date
EP0029574B1 (de) 1983-11-23
EP0029574A1 (de) 1981-06-03
US4327255A (en) 1982-04-27
FR2470497B1 (de) 1982-06-18
ATE5455T1 (de) 1983-12-15
FR2470497A1 (fr) 1981-05-29
JPS5686561A (en) 1981-07-14

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Legal Events

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