SE438758B - Gaffelkoppling for anslutning av en tvatradsabonnentledning till en fyrtradsledning - Google Patents

Gaffelkoppling for anslutning av en tvatradsabonnentledning till en fyrtradsledning

Info

Publication number: SE438758B
Authority: SE; Sweden
Prior art keywords: terminals; subscriber line; balancing network; direct current; impedance
Prior art date: 1978-05-19

Application number

SE7904303A

Other languages

English (en)

Swedish (sv)

Other versions

SE7904303L (sv

Inventor

R B Buchner

Original Assignee

Philips Nv

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.)

1978-05-19

Filing date

1979-05-16

Publication date

1985-04-29

1979-05-16 Application filed by Philips Nv filed Critical Philips Nv

1979-11-20 Publication of SE7904303L publication Critical patent/SE7904303L/xx

1985-04-29 Publication of SE438758B publication Critical patent/SE438758B/sv

Classifications

- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
- 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
- H04B1/582—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 with automatic balancing
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/005—Interface circuits for subscriber lines

Landscapes

Engineering & Computer Science (AREA)
Computer Networks & Wireless Communication (AREA)
Signal Processing (AREA)
Power Engineering (AREA)
Interface Circuits In Exchanges (AREA)
Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Devices For Supply Of Signal Current (AREA)

SE7904303A 1978-05-19 1979-05-16 Gaffelkoppling for anslutning av en tvatradsabonnentledning till en fyrtradsledning SE438758B (sv)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
NL7805416BA NL7805416A (nl)	1978-05-19	1978-05-19	Zelf-instellende vorkschakeling.

Publications (2)

Publication Number	Publication Date
SE7904303L SE7904303L (sv)	1979-11-20
SE438758B true SE438758B (sv)	1985-04-29

Family

ID=19830865

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
SE7904303A SE438758B (sv)	1978-05-19	1979-05-16	Gaffelkoppling for anslutning av en tvatradsabonnentledning till en fyrtradsledning

Country Status (10)

Country	Link
US (1)	US4297536A (nl)
JP (1)	JPS54152838A (nl)
AU (1)	AU522349B2 (nl)
BE (1)	BE876333A (nl)
CA (1)	CA1137665A (nl)
DE (1)	DE2919652C2 (nl)
FR (1)	FR2426365A1 (nl)
GB (1)	GB2021362B (nl)
NL (1)	NL7805416A (nl)
SE (1)	SE438758B (nl)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPS5733844A (en) *	1980-08-08	1982-02-24	Toshiba Corp	Echo cancelling device
SE450677B (sv) *	1982-04-01	1987-07-13	Ericsson Telefon Ab L M	Matningskrets ingaende i en likstromsmagnetiserad gaffeltransformator
SE426127B (sv) *	1981-04-24	1982-12-06	Ericsson Telefon Ab L M	Likstromsmagnetiserad gaffeltransformator
JPS5853233A (ja) *	1981-09-25	1983-03-29	Fujitsu Ltd	平衡結線網整合方式
DE3533762A1 (de) *	1985-09-21	1987-04-02	Ant Nachrichtentech	Schaltungsanordnung zum anschluss eines teilnehmerendgeraetes an teilnehmeranschlussleitung
US5271060A (en) *	1990-01-12	1993-12-14	Codex Corporation	Circuitry for interfacing telecommunications equipment to a communication channel
US8204094B2 (en) *	2009-04-21	2012-06-19	Innova, Inc.	Scalable, efficient laser systems
EP3164944B1 (en)	2014-07-01	2018-02-21	Telefonaktiebolaget LM Ericsson (publ)	Hybrid coil circuit

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE1249948B (de) *		1967-09-14	Siemens Aktiengesellschaft, Berlin und München, München	Schaltungsanordnung zum vierdrahtmäßigen Zusammenschalten von Leitungsabschnitten in Fernmelde-, insbesondere Fernsprechanlagen
US2302374A (en) *	1941-02-25	1942-11-17	Bell Telephone Labor Inc	Two-way signal transmission system
BE468046A (nl) *	1942-10-24
NL269763A (nl) *	1960-09-30
US3178521A (en) *	1962-11-15	1965-04-13	Bell Telephone Labor Inc	Dynamically balanced telephone network
GB1115216A (en) *	1967-02-28	1968-05-29	Standard Telephones Cables Ltd	Hybrid transformer
GB1210152A (en) *	1967-07-18	1970-10-28	Int Standard Electric Corp	Hybrid unit
FR2160308B1 (nl) *	1971-11-19	1977-01-28	Labo Cent Telecommunicat
US3875350A (en) *	1973-11-05	1975-04-01	Gte Automatic Electric Lab Inc	Self-balancing hybrid circuit
US4004109A (en) *	1975-05-09	1977-01-18	Boxall Frank S	Hybrid circuit
US4150260A (en) *	1975-06-18	1979-04-17	Hitachi, Ltd.	Subscriber's circuit for four-wire-system local switch
DE2714803B1 (de) *	1977-04-02	1978-08-03	Standard Elek K Lorenz Ag	Gabelschaltung zur Zweidraht-Vollduplexuebertragung von Digitalsignalen
US4103118A (en) *	1977-05-02	1978-07-25	Synanon Foundation, Inc.	Autobalance hybrid circuit
US4096362A (en) *	1977-06-20	1978-06-20	Bell Telephone Laboratories, Incorporated	Automatic cable balancing network

1978
- 1978-05-19 NL NL7805416BA patent/NL7805416A/nl not_active Application Discontinuation
1979
- 1979-05-10 CA CA000327398A patent/CA1137665A/en not_active Expired
- 1979-05-11 US US06/038,377 patent/US4297536A/en not_active Expired - Lifetime
- 1979-05-16 GB GB7917105A patent/GB2021362B/en not_active Expired
- 1979-05-16 AU AU47091/79A patent/AU522349B2/en not_active Ceased
- 1979-05-16 SE SE7904303A patent/SE438758B/sv unknown
- 1979-05-16 DE DE2919652A patent/DE2919652C2/de not_active Expired
- 1979-05-17 JP JP6141479A patent/JPS54152838A/ja active Pending
- 1979-05-17 BE BE0/195226A patent/BE876333A/xx not_active IP Right Cessation
- 1979-05-18 FR FR7912732A patent/FR2426365A1/fr active Granted

Also Published As

Publication number	Publication date
GB2021362B (en)	1982-08-25
FR2426365B1 (nl)	1984-04-20
AU522349B2 (en)	1982-05-27
JPS54152838A (en)	1979-12-01
CA1137665A (en)	1982-12-14
SE7904303L (sv)	1979-11-20
GB2021362A (en)	1979-11-28
US4297536A (en)	1981-10-27
AU4709179A (en)	1979-11-22
DE2919652A1 (de)	1979-11-22
BE876333A (fr)	1979-11-19
NL7805416A (nl)	1979-11-21
DE2919652C2 (de)	1986-05-07
FR2426365A1 (fr)	1979-12-14

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