BR8003158A - Sistema de telecomunicacao digital com pelo menos um setor de linha de quatro fios - Google Patents

Sistema de telecomunicacao digital com pelo menos um setor de linha de quatro fios

Info

Publication number: BR8003158A
Authority: BR; Brazil
Prior art keywords: telecommunication system; wire line; digital telecommunication; line sector; sector
Prior art date: 1979-05-21

Application number

BR8003158A

Other languages

English (en)

Inventor

H Strehl

Original Assignee

Siemens Ag

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.)

1979-05-21

Filing date

1980-05-20

Publication date

1980-12-30

1980-05-20 Application filed by Siemens Ag filed Critical Siemens Ag

1980-12-30 Publication of BR8003158A publication Critical patent/BR8003158A/pt

Classifications

- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/02—Details
- H04B3/20—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other
- H04B3/23—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other using a replica of transmitted signal in the time domain, e.g. echo cancellers
- H04B3/231—Echo cancellers using readout of a memory to provide the echo replica

Landscapes

Engineering & Computer Science (AREA)
Computer Networks & Wireless Communication (AREA)
Signal Processing (AREA)
Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Dc Digital Transmission (AREA)
Selective Calling Equipment (AREA)

BR8003158A 1979-05-21 1980-05-20 Sistema de telecomunicacao digital com pelo menos um setor de linha de quatro fios BR8003158A (pt)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
DE2920575A DE2920575C2 (de)	1979-05-21	1979-05-21	Digital-Fernmeldesystem mit mindestens einem Vierdrahtleitungsabschnitt

Publications (1)

Publication Number	Publication Date
BR8003158A true BR8003158A (pt)	1980-12-30

Family

ID=6071334

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
BR8003158A BR8003158A (pt)	1979-05-21	1980-05-20	Sistema de telecomunicacao digital com pelo menos um setor de linha de quatro fios

Country Status (17)

Country	Link
EP (1)	EP0019194B1 (pt)
JP (1)	JPS55154838A (pt)
AR (1)	AR231686A1 (pt)
AT (1)	ATE4403T1 (pt)
AU (1)	AU5855780A (pt)
BR (1)	BR8003158A (pt)
CA (1)	CA1147035A (pt)
DE (2)	DE2920575C2 (pt)
DK (1)	DK179580A (pt)
FI (1)	FI801625A7 (pt)
GB (1)	GB2050126B (pt)
IL (1)	IL60125A (pt)
LU (1)	LU82109A1 (pt)
MX (1)	MX147045A (pt)
NO (1)	NO148054C (pt)
YU (1)	YU127880A (pt)
ZA (1)	ZA802985B (pt)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE3116863C2 (de) *	1981-04-28	1985-08-08	Siemens AG, 1000 Berlin und 8000 München	Schaltungsanordnung zur Digitalsignal-Echokompensation
DE3121545C2 (de) *	1981-05-29	1986-12-04	Siemens AG, 1000 Berlin und 8000 München	Übersprech- u./o. Echo-Kompensationsschaltung
CA1173128A (en)	1981-10-13	1984-08-21	Pok F. Lee	Echo cancellation using transversal filters
CA1186029A (en) *	1982-06-11	1985-04-23	Gordon F. Mein	Automatic correction circuit for received digitally encoded signals
GB2123259A (en) *	1982-06-25	1984-01-25	Philips Electronic Associated	Digital duplex communication system
DE3327467A1 (de) *	1983-07-29	1985-02-14	Siemens AG, 1000 Berlin und 8000 München	Verfahren und schaltungsanordnung zur kompensation von echosignalen
DE3719590A1 (de) *	1987-06-12	1988-12-29	Telefonbau & Normalzeit Gmbh	Verfahren zur entzerrung von digital-signalen
DE3730234A1 (de) *	1987-09-09	1989-03-30	Telefonbau & Normalzeit Gmbh	Verfahren zur echounterdrueckung
JP6268199B2 (ja)	2014-02-12	2018-01-24	日立オートモティブシステムズ株式会社	シリンダ装置の製造方法

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
GB1522663A (en) *	1975-07-11	1978-08-23	Milgo Electronic Corp	Data modems with automatic equalization drop-out detection and data echo protection
NL7800408A (nl) *	1977-01-17	1978-07-19	Trt Telecom Radio Electr	Digitale echocompensator voor een modem voor datatransmissie met behulp van modulatie van een draaggolf.
NO140648C (no) *	1977-10-24	1983-03-29	Elektrisk Bureau As	Direktiv kobler.

1979
- 1979-05-21 DE DE2920575A patent/DE2920575C2/de not_active Expired
1980
- 1980-01-25 LU LU82109A patent/LU82109A1/de unknown
- 1980-04-25 DK DK179580A patent/DK179580A/da not_active Application Discontinuation
- 1980-05-02 GB GB8014749A patent/GB2050126B/en not_active Expired
- 1980-05-06 EP EP80102472A patent/EP0019194B1/de not_active Expired
- 1980-05-06 DE DE8080102472T patent/DE3064481D1/de not_active Expired
- 1980-05-06 AT AT80102472T patent/ATE4403T1/de not_active IP Right Cessation
- 1980-05-14 YU YU01278/80A patent/YU127880A/xx unknown
- 1980-05-16 CA CA000352115A patent/CA1147035A/en not_active Expired
- 1980-05-19 NO NO801480A patent/NO148054C/no unknown
- 1980-05-19 MX MX182376A patent/MX147045A/es unknown
- 1980-05-20 FI FI801625A patent/FI801625A7/fi not_active Application Discontinuation
- 1980-05-20 BR BR8003158A patent/BR8003158A/pt unknown
- 1980-05-20 AU AU58557/80A patent/AU5855780A/en not_active Abandoned
- 1980-05-20 IL IL60125A patent/IL60125A/xx unknown
- 1980-05-20 ZA ZA00802985A patent/ZA802985B/xx unknown
- 1980-05-20 JP JP6606780A patent/JPS55154838A/ja active Pending
- 1980-05-21 AR AR281151A patent/AR231686A1/es active

Also Published As

Publication number	Publication date
NO801480L (no)	1980-11-24
NO148054C (no)	1983-07-27
IL60125A (en)	1983-02-23
IL60125A0 (en)	1980-07-31
JPS55154838A (en)	1980-12-02
FI801625A7 (fi)	1980-11-22
EP0019194A1 (de)	1980-11-26
ZA802985B (en)	1981-05-27
GB2050126B (en)	1984-02-22
YU127880A (en)	1982-10-31
CA1147035A (en)	1983-05-24
DK179580A (da)	1980-11-22
AR231686A1 (es)	1985-01-31
EP0019194B1 (de)	1983-08-03
MX147045A (es)	1982-09-23
ATE4403T1 (de)	1983-08-15
AU5855780A (en)	1980-11-27
DE2920575C2 (de)	1981-09-17
NO148054B (no)	1983-04-18
DE3064481D1 (en)	1983-09-08
GB2050126A (en)	1980-12-31
DE2920575B1 (de)	1980-10-23
LU82109A1 (de)	1980-04-23

Publication	Publication Date	Title
FR2471109B1 (fr)	1986-06-06	Magnetoscope numerique
FI801336A7 (fi)	1980-11-08	Fettemulsion foer intravenoes injektion
IT1130170B (it)	1986-06-11	Impianto telefonico non richiedente centrale
NL7704749A (nl)	1977-11-01	Televisie-opnamestelsel.
FI802205A7 (fi)	1981-01-18	Matningsbrygga foer abonnentapparat
IT7928239A0 (it)	1979-12-20	Termocapsula con microsoffietto.
FI801285A7 (fi)	1981-01-01	Muotteihin liittyvät parannukset.
BE882941A (nl)	1980-10-24	Digitaal signaleringsstelsel
NL172014B (nl)	1983-01-17	Telecommunicatie-verbindingsstelsel.
ES497008A0 (es)	1981-08-01	Un sistema de telecomunicacion digital
NO801250L (no)	1980-11-05	Signalleringssystem.
BE886450A (fr)	1981-06-02	Nouveaux mercaptoorganosiloxanes
BR8003158A (pt)	1980-12-30	Sistema de telecomunicacao digital com pelo menos um setor de linha de quatro fios
DK307180A (da)	1981-01-22	Pladespiller
BR8002716A (pt)	1980-12-16	Sistema telefonico
AT380218B (de)	1986-04-25	Drahtgewebeband
NL7612629A (nl)	1977-05-17	Digitaal telecommunicatiesysteem.
FI803144L (fi)	1981-04-13	Foerbaettrad digital kodning foer videosystem
NO151805C (no)	1985-06-12	Digital-fjernmeldingssystem
IT1209200B (it)	1989-07-16	Procedimento metallurgico ad iniezione.
AT370854B (de)	1983-05-10	Radialinjektor
IT8021326A0 (it)	1980-04-11	Morsetto per cavo.
NL7603830A (nl)	1977-10-14	Televisieopneembuis.
BR8007949A (pt)	1981-06-30	Sistema telefonico
ATE19825T1 (de)	1986-05-15	Optisches messsystem.