IT1084404B - Ripetitore di frequenza vocali bidirezionali. - Google Patents

Ripetitore di frequenza vocali bidirezionali.

Info

Publication number: IT1084404B
Authority: IT; Italy
Prior art keywords: voice frequency; frequency repeater; bidirectional voice; bidirectional; repeater
Prior art date: 1976-08-16

Application number

IT26650/77A

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.)

1976-08-16

Filing date

1977-08-11

Publication date

1985-05-25

1977-08-11 Application filed by Western Electric Co filed Critical Western Electric Co

1985-05-25 Application granted granted Critical

1985-05-25 Publication of IT1084404B publication Critical patent/IT1084404B/it

Classifications

- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
- H04B1/54—Circuits using the same frequency for two directions of communication
- H04B1/58—Hybrid arrangements, i.e. arrangements for transition from single-path two-direction transmission to single-direction transmission on each of two paths or vice versa
- H04B1/586—Hybrid arrangements, i.e. arrangements for transition from single-path two-direction transmission to single-direction transmission on each of two paths or vice versa using an electronic circuit
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
- H04B1/54—Circuits using the same frequency for two directions of communication
- H04B1/58—Hybrid arrangements, i.e. arrangements for transition from single-path two-direction transmission to single-direction transmission on each of two paths or vice versa
- H04B1/581—Hybrid arrangements, i.e. arrangements for transition from single-path two-direction transmission to single-direction transmission on each of two paths or vice versa using a transformer

Landscapes

Engineering & Computer Science (AREA)
Computer Networks & Wireless Communication (AREA)
Signal Processing (AREA)
Power Engineering (AREA)
Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Amplifiers (AREA)
Telephonic Communication Services (AREA)
Interface Circuits In Exchanges (AREA)
Bidirectional Digital Transmission (AREA)
Networks Using Active Elements (AREA)

IT26650/77A 1976-08-16 1977-08-11 Ripetitore di frequenza vocali bidirezionali. IT1084404B (it)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US05/714,306 US4074087A (en)	1976-08-16	1976-08-16	Bidirectional voice frequency repeater

Publications (1)

Publication Number	Publication Date
IT1084404B true IT1084404B (it)	1985-05-25

Family

ID=24869508

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
IT26650/77A IT1084404B (it)	1976-08-16	1977-08-11	Ripetitore di frequenza vocali bidirezionali.

Country Status (13)

Country	Link
US (1)	US4074087A (it)
JP (1)	JPS5323504A (it)
AU (1)	AU514331B2 (it)
BE (1)	BE857661A (it)
CA (1)	CA1084642A (it)
DE (1)	DE2736136C3 (it)
ES (1)	ES461618A1 (it)
FR (1)	FR2362535A1 (it)
GB (1)	GB1563541A (it)
IL (1)	IL52705A0 (it)
IT (1)	IT1084404B (it)
NL (1)	NL7708975A (it)
SE (1)	SE424127B (it)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US4174470A (en) *	1978-10-10	1979-11-13	Bell Telephone Laboratories, Incorporated	Electronic hybrid
DE2911866C3 (de) *	1979-03-26	1982-03-11	Siemens AG, 1000 Berlin und 8000 München	Anordnung mit einer Gabelschaltung für den Zweidraht-Vierdraht-Übergang in PCM-Zeitmultiplexsystemen
US4365119A (en) *	1980-07-28	1982-12-21	Bell Telephone Laboratories, Incorporated	Automatically adjustable bidirectional-to-unidirectional transmission network
US4368361A (en) *	1980-07-28	1983-01-11	Bell Telephone Laboratories, Incorporated	Automatically adjustable bidirectional-to-unidirectional transmission network
JPS5916434A (ja) *	1982-07-19	1984-01-27	Hitachi Ltd	光通信方式
GB8404563D0 (en) *	1984-02-21	1984-03-28	Plessey Co Plc	Adaptive cancellation bridge circuit
US4628157A (en) *	1984-09-07	1986-12-09	At&T Bell Laboratories	Bidirectional adaptive voice frequency repeater
AT384919B (de) *	1984-10-05	1988-01-25	Alcatel Austria Ag	Schaltungsanordnung fuer fernsprechnetze
US4896351A (en) *	1985-06-27	1990-01-23	Siemens Ag	Apparatus for separating dc current and ac current components of a composite signal
CA1240088A (en) *	1985-11-20	1988-08-02	Mitel Corporation	Solid state trunk circuit
CA1242541A (en) *	1985-11-25	1988-09-27	Dany Sylvain	Echo cancellation in two-wire transmission path repeaters
US5282157A (en) *	1990-09-13	1994-01-25	Telecom Analysis Systems, Inc.	Input impedance derived from a transfer network
US5471527A (en) *	1993-12-02	1995-11-28	Dsc Communications Corporation	Voice enhancement system and method
US5530396A (en) *	1994-09-19	1996-06-25	Center For Innovative Technology	Damped EMI input filter power factor correction circuits
DE10147772C1 (de) *	2001-09-27	2003-09-11	Siemens Ag	Verfahren zum Betreiben eines Übertragungssystems und Übertragungssystem in einem Energieversorgungsnetz
US7190194B2 (en) *	2004-02-13	2007-03-13	Nec Electronics Corporation	Active hybrid transformer circuit having a replica driver
US7330545B2 (en) *	2004-09-08	2008-02-12	Analog Devices Inc.	Dual transformer hybrid system and method
US7792196B2 (en) *	2004-12-28	2010-09-07	Intel Corporation	Single conductor bidirectional communication link

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US2511948A (en) *		1950-06-20		Hybrid circuit
US2945920A (en) *	1958-01-17	1960-07-19	Motorola Inc	Electronic hybrid
US3586793A (en) *	1968-06-21	1971-06-22	John C Neal	Two way repeater
US3904838A (en) *	1971-06-04	1975-09-09	Int Standard Electric Corp	Two-wire, bi-directional voice frequency repeater
US3828146A (en) *	1973-03-22	1974-08-06	Bell Telephone Labor Inc	Time division conference hybrid circuit
US3835259A (en) *	1973-03-22	1974-09-10	Bell Telephone Labor Inc	Time division conference hybrid circuit
US3855431A (en) *	1973-04-02	1974-12-17	Itt	Electronic hybrid amplifier
US3889072A (en) *	1973-10-19	1975-06-10	Itt	Bi-directional amplification apparatus
US3973089A (en) *	1973-10-29	1976-08-03	General Electric Company	Adaptive hybrid circuit
US3872266A (en) *	1973-12-13	1975-03-18	Magnetic Controls Co	Telephone monitor circuit
US3970805A (en) *	1974-02-22	1976-07-20	Gte Automatic Electric (Canada) Limited	Active hybrid circuit
US3934099A (en) *	1974-08-16	1976-01-20	Bell Telephone Laboratories, Incorporated	Bias, feedback and network arrangements for hybrid circuits

1976
- 1976-08-16 US US05/714,306 patent/US4074087A/en not_active Expired - Lifetime
1977
- 1977-07-19 CA CA283,042A patent/CA1084642A/en not_active Expired
- 1977-08-05 SE SE7708932A patent/SE424127B/xx not_active IP Right Cessation
- 1977-08-10 BE BE180061A patent/BE857661A/xx not_active IP Right Cessation
- 1977-08-10 FR FR7724614A patent/FR2362535A1/fr active Granted
- 1977-08-11 DE DE2736136A patent/DE2736136C3/de not_active Expired
- 1977-08-11 AU AU27816/77A patent/AU514331B2/en not_active Expired
- 1977-08-11 IL IL52705A patent/IL52705A0/xx not_active IP Right Cessation
- 1977-08-11 IT IT26650/77A patent/IT1084404B/it active
- 1977-08-12 JP JP9622877A patent/JPS5323504A/ja active Pending
- 1977-08-15 NL NL7708975A patent/NL7708975A/xx not_active Application Discontinuation
- 1977-08-16 ES ES461618A patent/ES461618A1/es not_active Expired
- 1977-08-16 GB GB34306/77A patent/GB1563541A/en not_active Expired

Also Published As

Publication number	Publication date
CA1084642A (en)	1980-08-26
DE2736136A1 (de)	1978-02-23
JPS5323504A (en)	1978-03-04
FR2362535B1 (it)	1981-07-10
AU2781677A (en)	1979-02-15
BE857661A (fr)	1977-12-01
ES461618A1 (es)	1978-07-01
SE7708932L (sv)	1978-02-17
AU514331B2 (en)	1981-02-05
NL7708975A (nl)	1978-02-20
SE424127B (sv)	1982-06-28
GB1563541A (en)	1980-03-26
IL52705A0 (en)	1977-10-31
DE2736136C3 (de)	1981-09-24
DE2736136B2 (de)	1980-12-04
FR2362535A1 (fr)	1978-03-17
US4074087A (en)	1978-02-14

Publication	Publication Date	Title
NL188880C (nl)	1992-10-16	Luidspreker.
NL7702873A (nl)	1977-09-20	Zendontvanger.
IT1084379B (it)	1985-05-25	Procedimento di piroscissione.
NL7712874A (nl)	1978-05-24	Onderzees station.
NL7702968A (nl)	1977-09-21	Transducent.
IT7824143A0 (it)	1978-06-02	Altoparlante.
NL7609817A (nl)	1978-03-07	Lager.
IT1084404B (it)	1985-05-25	Ripetitore di frequenza vocali bidirezionali.
NL7701434A (nl)	1977-08-12	Luidsprekersysteem.
NL189843C (nl)	1993-08-02	Luidspreker.
SE7713582L (sv)	1978-06-14	Faksimilmottagare
NL188194C (nl)	1992-04-16	Frequentie selectieve inrichting.
SE7705981L (sv)	1977-11-23	Suprheterodynmottagare
NL7714545A (nl)	1978-07-04	Radiotelefoniestelsel.
SE7700802L (sv)	1977-07-28	Fergtelevisionsmottagare
NL7702202A (nl)	1978-03-29	Luidspreker-systeem.
NL7706404A (nl)	1977-12-13	Luidspreker.
NL7713405A (nl)	1978-06-06	Telefoontoestel.
NL7800873A (nl)	1978-07-27	Luidspreker.
NL178831C (nl)	1986-05-16	Communicatiestelsel.
NL7705919A (nl)	1977-12-09	Communicatiesysteem.
NL7703740A (nl)	1977-10-07	Kanaalkiesinrichting.
IT1087809B (it)	1985-06-04	Altoparlante.
NL7709527A (nl)	1978-03-06	Luidsprekersysteem.
NL7709590A (nl)	1978-03-03	Telefoonstelsel.