BR7900006A - Circuito supressor de eco - Google Patents

Circuito supressor de eco

Info

Publication number: BR7900006A
Authority: BR; Brazil
Prior art keywords: eco; suppressor circuit; suppressor; circuit; eco suppressor
Prior art date: 1978-01-03

Application number

BR7900006A

Other languages

English (en)

Inventor

P Vachon

Original Assignee

Storage Technology Corp

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.)

1978-01-03

Filing date

1979-01-02

Publication date

1979-08-07

1979-01-02 Application filed by Storage Technology Corp filed Critical Storage Technology Corp

1979-08-07 Publication of BR7900006A publication Critical patent/BR7900006A/pt

Links

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

Landscapes

Engineering & Computer Science (AREA)
Computer Networks & Wireless Communication (AREA)
Signal Processing (AREA)
Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Interconnected Communication Systems, Intercoms, And Interphones (AREA)

BR7900006A 1978-01-03 1979-01-02 Circuito supressor de eco BR7900006A (pt)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US05/866,478 US4165449A (en)	1978-01-03	1978-01-03	Echo suppressor circuit

Publications (1)

Publication Number	Publication Date
BR7900006A true BR7900006A (pt)	1979-08-07

Family

ID=25347695

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
BR7900006A BR7900006A (pt)	1978-01-03	1979-01-02	Circuito supressor de eco

Country Status (12)

Country	Link
US (1)	US4165449A (pt)
JP (1)	JPS54101212A (pt)
AU (1)	AU4238778A (pt)
BR (1)	BR7900006A (pt)
CA (1)	CA1126883A (pt)
DE (1)	DE2856789A1 (pt)
FR (1)	FR2413825A1 (pt)
GB (1)	GB2012148A (pt)
IL (1)	IL55922A0 (pt)
IT (1)	IT1100418B (pt)
NL (1)	NL7812648A (pt)
SE (1)	SE7813077L (pt)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP0025465B1 (en) *	1979-09-17	1986-12-03	E.C.I. Telecom Ltd	Apparatus for use in telephone communication
US4394767A (en) *	1981-07-07	1983-07-19	General Datacomm Industries, Inc.	Data transmission over long distance circuits
US4609788A (en) *	1983-03-01	1986-09-02	Racal Data Communications Inc.	Digital voice transmission having improved echo suppression
US4652703A (en) *	1983-03-01	1987-03-24	Racal Data Communications Inc.	Digital voice transmission having improved echo suppression
IL70046A0 (en) *	1983-10-25	1984-01-31	Israel Electronics Corp	Echo eliminator
FI73341C (fi) *	1985-08-06	1987-09-10	Outel Oy	Mellanfoerstaerkare som anvaends i tvaoledningsfoerbindelser i ett valbart telefonnaet samt foerfarande foer reglering av dess foerstaerkning.
US4980908A (en) *	1989-05-30	1990-12-25	Voicetek Corporation	Voice-switched gain control for voice communication equipment connected to telephone lines
US5548638A (en) *	1992-12-21	1996-08-20	Iwatsu Electric Co., Ltd.	Audio teleconferencing apparatus
DE19538187A1 (de) *	1995-10-13	1997-04-17	Sel Alcatel Ag	Verfahren und Schaltungsanordnung zur Detektion von Sprache eines fernen Sprechers in einem Fernsprechendgerät
US5771440A (en) *	1996-05-31	1998-06-23	Motorola, Inc.	Communication device with dynamic echo suppression and background noise estimation
US5982755A (en) *	1997-03-06	1999-11-09	Nortel Networks Corporation	System and method for providing high terminal coupling loss in a handsfree terminal
EP0910175A1 (en) *	1997-10-17	1999-04-21	Alcatel	Two-way echo suppressor
US6754337B2 (en) *	2002-01-25	2004-06-22	Acoustic Technologies, Inc.	Telephone having four VAD circuits
US7065207B2 (en) *	2003-09-11	2006-06-20	Freescale Semiconductor, Inc.	Controlling attenuation during echo suppression
US11363147B2 (en)	2018-09-25	2022-06-14	Sorenson Ip Holdings, Llc	Receive-path signal gain operations

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3560669A (en) *	1969-02-25	1971-02-02	Wescom	Echo suppressor
DE2016394C3 (de) *	1970-04-06	1973-11-15	Siemens Ag, 1000 Berlin U. 8000 Muenchen	Echosperre fur einen Sprechkreis auf einem Vierdraht Übertragungssystem bei einem Übergang auf einen Zweidraht Über tragungsweg
US3647993A (en) *	1970-05-18	1972-03-07	Wescom	Tone disabler
DE2457876C3 (de) *	1973-12-10	1981-06-04	Compagnie Industrielle des Télécommunications CIT-ALCATEL S.A., 75008 Paris	Echounterdrücker für ein Endgerät einer elektrischen Vierdrahtfernsprechleitung
US3942116A (en) *	1975-03-13	1976-03-02	California Microwave, Inc.	Transceiver having improved voice actuated carrier and echo suppression circuit
US3973086A (en) *	1975-04-24	1976-08-03	Bell Telephone Laboratories, Incorporated	Digital echo suppressor break-in circuitry

1978
- 1978-01-03 US US05/866,478 patent/US4165449A/en not_active Expired - Lifetime
- 1978-11-10 IL IL55922A patent/IL55922A0/xx unknown
- 1978-11-29 IT IT30342/78A patent/IT1100418B/it active
- 1978-12-11 AU AU42387/78A patent/AU4238778A/en active Pending
- 1978-12-19 SE SE7813077A patent/SE7813077L/xx unknown
- 1978-12-21 FR FR7835915A patent/FR2413825A1/fr not_active Withdrawn
- 1978-12-29 JP JP16451278A patent/JPS54101212A/ja active Pending
- 1978-12-29 DE DE19782856789 patent/DE2856789A1/de not_active Withdrawn
- 1978-12-29 NL NL7812648A patent/NL7812648A/xx not_active Application Discontinuation
1979
- 1979-01-02 CA CA318,982A patent/CA1126883A/en not_active Expired
- 1979-01-02 BR BR7900006A patent/BR7900006A/pt unknown
- 1979-01-03 GB GB79107A patent/GB2012148A/en not_active Withdrawn

Also Published As

Publication number	Publication date
NL7812648A (nl)	1979-07-05
FR2413825A1 (fr)	1979-07-27
IT7830342A0 (it)	1978-11-29
US4165449A (en)	1979-08-21
SE7813077L (sv)	1979-07-04
IL55922A0 (en)	1979-01-31
DE2856789A1 (de)	1979-07-12
AU4238778A (en)	1979-07-12
IT1100418B (it)	1985-09-28
GB2012148A (en)	1979-07-18
JPS54101212A (en)	1979-08-09
CA1126883A (en)	1982-06-29

Publication	Publication Date	Title
DK71980A (da)	1981-08-20	Brokonverterkredsloeb
ES481550A0 (es)	1980-07-01	Micropastilla de circuito integrado.
FR2415913B1 (fr)	1986-08-29	Circuit de filtrage passe-bande
BR7900333A (pt)	1979-08-14	Circuito de deteccao
FR2425771B1 (fr)	1985-11-29	Circuit de seuil
IT1104580B (it)	1985-10-21	Dispositivo di filtraggio
BE873172A (nl)	1979-06-29	Bevestigingsinrichting
SE7813077L (sv)	1979-07-04	Ekodempande krets
SE7901551L (sv)	1979-08-28	Integrerad krets
AR219995A1 (es)	1980-09-30	Condensador
IT1140808B (it)	1986-10-10	Interruttore elettronico
BR8002805A (pt)	1980-12-16	Circuito de linha
BR8004593A (pt)	1981-02-03	Disjuntor de circuito
BR7900819A (pt)	1979-09-04	Arranjo de circuito para impulsao eletromotriz
IT1101339B (it)	1985-09-28	Condensatore elettrico
SE7908381L (sv)	1980-04-14	Elektronisk releanordning
BR7908215A (pt)	1980-09-16	Disjuntor
FR2433726B2 (fr)	1986-08-01	Condenseur
IT1121242B (it)	1986-03-26	Condensatore elettrico
AR219805A1 (es)	1980-09-15	Circuito electrico de filtro
DK240079A (da)	1979-12-10	Elektroencefalograf
FR2446558B1 (fr)	1988-03-25	Circuit de filtrage
BR7807307A (pt)	1980-05-06	Disjuntor de circuito
IT1121243B (it)	1986-03-26	Condensatore elettrico
ES251221Y (es)	1981-11-01	Un conmutador electronico mejorado