IT965227B - Generatore di segnali - Google Patents

Generatore di segnali

Info

Publication number: IT965227B
Authority: IT; Italy
Prior art keywords: signal generator; generator; signal
Prior art date: 1971-09-07

Application number

IT52568/72A

Other languages

English (en)

Original Assignee

Western Electric Co

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.)

1971-09-07

Filing date

1972-09-06

Publication date

1974-01-31

1972-09-06 Application filed by Western Electric Co filed Critical Western Electric Co

1974-01-31 Application granted granted Critical

1974-01-31 Publication of IT965227B publication Critical patent/IT965227B/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
- H04M1/50—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

Landscapes

Engineering & Computer Science (AREA)
Signal Processing (AREA)
Push-Button Switches (AREA)
Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
Telephonic Communication Services (AREA)
Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
Interface Circuits In Exchanges (AREA)
Electronic Switches (AREA)

IT52568/72A 1971-09-07 1972-09-06 Generatore di segnali IT965227B (it)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US17812671A	1971-09-07	1971-09-07

Publications (1)

Publication Number	Publication Date
IT965227B true IT965227B (it)	1974-01-31

Family

ID=22651310

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
IT52568/72A IT965227B (it)	1971-09-07	1972-09-06	Generatore di segnali

Country Status (10)

Country	Link
US (1)	US3699477A (it)
JP (1)	JPS5228522B2 (it)
BE (1)	BE788462A (it)
CA (1)	CA958083A (it)
DE (1)	DE2243625C3 (it)
ES (1)	ES406799A1 (it)
FR (1)	FR2152669B1 (it)
GB (1)	GB1411418A (it)
IT (1)	IT965227B (it)
NL (1)	NL7212067A (it)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
NL7212510A (it) *	1972-09-15	1974-03-19
CA988175A (en) *	1974-06-14	1976-04-27	Michael C.J. Cowpland	Tone generator
US4110568A (en) *	1976-10-08	1978-08-29	Gte Atea, S.A.	Dual tone multifrequency generator
JPS5461804A (en) *	1977-10-26	1979-05-18	Mitsubishi Electric Corp	Information transmitter
US6326853B1 (en) *	1999-08-26	2001-12-04	Cypress Semiconductor Corp	Circuitry, architecture and method(s) for phase matching and/or reducing load capacitance, current and/or power consumption in an oscillator
US8605889B2 (en) *	2011-11-18	2013-12-10	Edward D. REGAN	Method and device for encoding characters and routing calls using expanded dual-tone multi-frequency (DTMF) encoding scheme

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3349350A (en) *	1964-12-04	1967-10-24	Otto E Rittenbach	Frequency step filter
US3424870A (en) *	1965-09-14	1969-01-28	Bell Telephone Labor Inc	Multifrequency signal generator for tone-dialed telephones

0
- BE BE788462D patent/BE788462A/xx unknown
1971
- 1971-09-07 US US178126A patent/US3699477A/en not_active Expired - Lifetime
1972
- 1972-03-23 CA CA137,929A patent/CA958083A/en not_active Expired
- 1972-09-05 NL NL7212067A patent/NL7212067A/xx not_active Application Discontinuation
- 1972-09-06 IT IT52568/72A patent/IT965227B/it active
- 1972-09-06 DE DE2243625A patent/DE2243625C3/de not_active Expired
- 1972-09-06 GB GB4124872A patent/GB1411418A/en not_active Expired
- 1972-09-06 FR FR7231571A patent/FR2152669B1/fr not_active Expired
- 1972-09-07 JP JP47089138A patent/JPS5228522B2/ja not_active Expired
- 1972-09-07 ES ES406799A patent/ES406799A1/es not_active Expired

Also Published As

Publication number	Publication date
JPS5228522B2 (it)	1977-07-27
DE2243625A1 (de)	1973-03-15
BE788462A (fr)	1973-01-02
US3699477A (en)	1972-10-17
FR2152669B1 (it)	1976-03-12
CA958083A (en)	1974-11-19
GB1411418A (en)	1975-10-22
FR2152669A1 (it)	1973-04-27
DE2243625C3 (de)	1975-04-17
JPS4837005A (it)	1973-05-31
ES406799A1 (es)	1975-10-16
NL7212067A (it)	1973-03-09
DE2243625B2 (de)	1974-08-29

Publication	Publication Date	Title
AT333623B (de)	1976-12-10	Sportschuh
BE780107A (fr)	1972-07-03	Garde-temps
AT335885B (de)	1977-04-12	Sportschuh
BE777856A (fr)	1972-07-10	Cryocable
DK135896B (da)	1977-07-11	??
AT329438B (de)	1976-05-10	Lufthebeforderer
AT325420B (de)	1975-10-27	Koronagenerator
BE780405A (fr)	1972-09-11	Fotografisch materiaal
BE779073A (fr)	1972-08-08	Bitumineuze emulsies
AT342779B (de)	1978-04-25	Zahnpasten
BE779891A (fr)	1972-08-25	Balai laveur-essoreur
BE778428A (fr)	1972-05-16	Vatenklem
IT951068B (it)	1973-06-30	Tiadiazolidindioni sostituiti
BE780088A (fr)	1972-07-03	Cirkelhooier
IT965227B (it)	1974-01-31	Generatore di segnali
IT946722B (it)	1973-05-21	Paracolpi nautici
SE382758B (sv)	1976-02-16	Ultraljudgenerator
BE780406A (fr)	1972-09-11	Tabulatorponsmachine
BE773645A (fr)	1972-01-31	Ladenkast
BE777205R (fr)	1972-04-17	Braguette
BR7205776D0 (pt)	1973-08-21	Conjunto de para-choque
BE778507A (fr)	1972-07-26	Beta-alcoylthio-aldehydes
BE780395A (fr)	1972-07-03	Doorzichtige plaat
BE779012A (fr)	1972-08-04	Supraconducteurs
BE780015A (fr)	1972-08-29	Ketel