BE777659A - Suppresseur d'echo numerique - Google Patents

Suppresseur d'echo numerique

Info

Publication number: BE777659A
Authority: BE; Belgium
Prior art keywords: echo suppressor; digital echo; digital; suppressor; echo
Prior art date: 1971-01-08

Application number

BE777659A

Other languages

English (en)

Inventor

E Fariello

Original Assignee

Communications Satellite 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.)

1971-01-08

Filing date

1972-01-04

Publication date

1972-05-02

1972-01-04 Application filed by Communications Satellite Corp filed Critical Communications Satellite Corp

1972-05-02 Publication of BE777659A publication Critical patent/BE777659A/fr

Classifications

- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F7/00—Methods or arrangements for processing data by operating upon the order or content of the data handled
- G06F7/02—Comparing digital values
- G06F7/026—Magnitude comparison, i.e. determining the relative order of operands based on their numerical value, e.g. window comparator
- 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)
General Physics & Mathematics (AREA)
Theoretical Computer Science (AREA)
Physics & Mathematics (AREA)
Mathematical Analysis (AREA)
Computational Mathematics (AREA)
Signal Processing (AREA)
Mathematical Optimization (AREA)
Pure & Applied Mathematics (AREA)
General Engineering & Computer Science (AREA)
Computer Networks & Wireless Communication (AREA)
Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)
Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)

BE777659A 1971-01-08 1972-01-04 Suppresseur d'echo numerique BE777659A (fr)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US105069A US3896273A (en)	1971-01-08	1971-01-08	Digital echo suppressor

Publications (1)

Publication Number	Publication Date
BE777659A true BE777659A (fr)	1972-05-02

Family

ID=22303879

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
BE777659A BE777659A (fr)	1971-01-08	1972-01-04	Suppresseur d'echo numerique

Country Status (10)

Country	Link
US (1)	US3896273A (fr)
JP (1)	JPS5726015B1 (fr)
BE (1)	BE777659A (fr)
CA (1)	CA944879A (fr)
DE (1)	DE2200771C2 (fr)
FR (1)	FR2121656B1 (fr)
GB (1)	GB1371815A (fr)
IT (1)	IT948812B (fr)
NL (1)	NL176731C (fr)
SE (1)	SE374988B (fr)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
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
US4012603A (en) *	1974-08-27	1977-03-15	Nippon Electric Company, Ltd.	Echo suppressor having self-adaptive means
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
US3992594A (en) *	1975-10-10	1976-11-16	Bell Telephone Laboratories, Incorporated	Echo suppressor break-in circuitry
US4029912A (en) *	1975-12-10	1977-06-14	Bell Telephone Laboratories, Incorporated	Common control digital echo suppressor
FR2363247A1 (fr) *	1976-08-24	1978-03-24	Cit Alcatel	Equipement terminal pour un systeme multiplex telephonique a courants porteurs
FR2404969A1 (fr) *	1977-10-03	1979-04-27	Cit Alcatel	Demi-suppresseur d'echo pour une ligne telephonique a quatre fils
US4123626A (en) *	1977-11-23	1978-10-31	Northern Telecom Limited	Digital echo attenuation circuit for a telephone system
US4192979A (en) *	1978-06-27	1980-03-11	Communications Satellite Corporation	Apparatus for controlling echo in communication systems utilizing a voice-activated switch
CA1130920A (fr) *	1979-03-05	1982-08-31	William G. Crouse	Detecteur de paroles a seuil variable
FR2451676A1 (fr) *	1979-03-12	1980-10-10	Soumagne Joel	Detecteur d'echo notamment pour systeme de communication a interpolation de parole
CA1137240A (fr) *	1980-09-09	1982-12-07	Northern Telecom Limited	Methode et appareil de detection d'echos dans les signaux de voies telephoniques
US4549290A (en) *	1983-06-10	1985-10-22	Bell David B	Voice/data digital, duplex link
DE3406407A1 (de) *	1983-09-29	1985-04-11	Siemens AG, 1000 Berlin und 8000 München	Schaltungsanordnung zur steuerung der uebertragungsfaehigkeit des empfangszweiges einer uebertragungseinrichtung
US5022074A (en) *	1985-07-01	1991-06-04	Rockwell International Corporation	Digital echo suppressor
JPH07123235B2 (ja) *	1986-08-13	1995-12-25	株式会社日立製作所	エコ−サプレツサ
JPS63126861U (fr) *	1987-02-12	1988-08-18

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
GB1181123A (en) *	1966-05-05	1970-02-11	Sits Soc It Telecom Siemens	Improvements in and relating to Telephone Signal Transmission System
US3562448A (en) *	1968-06-21	1971-02-09	Bell Telephone Labor Inc	Common control digital echo suppression
US3560669A (en) *	1969-02-25	1971-02-02	Wescom	Echo suppressor

1971
- 1971-01-08 US US105069A patent/US3896273A/en not_active Expired - Lifetime
1972
- 1972-01-04 BE BE777659A patent/BE777659A/fr not_active IP Right Cessation
- 1972-01-07 IT IT67049/72A patent/IT948812B/it active
- 1972-01-07 FR FR7200434A patent/FR2121656B1/fr not_active Expired
- 1972-01-07 CA CA131,922A patent/CA944879A/en not_active Expired
- 1972-01-07 DE DE2200771A patent/DE2200771C2/de not_active Expired
- 1972-01-07 NL NLAANVRAGE7200277,A patent/NL176731C/xx not_active IP Right Cessation
- 1972-01-08 JP JP445272A patent/JPS5726015B1/ja active Pending
- 1972-01-10 GB GB104672A patent/GB1371815A/en not_active Expired
- 1972-02-03 SE SE7200006*[A patent/SE374988B/xx unknown

Also Published As

Publication number	Publication date
DE2200771C2 (de)	1986-01-30
NL7200277A (fr)	1972-07-11
SE374988B (fr)	1975-03-24
NL176731C (nl)	1985-05-17
FR2121656A1 (fr)	1972-08-25
AU3731571A (en)	1973-06-28
GB1371815A (en)	1974-10-30
IT948812B (it)	1973-06-11
FR2121656B1 (fr)	1977-01-14
CA944879A (en)	1974-04-02
NL176731B (nl)	1984-12-17
JPS5726015B1 (fr)	1982-06-02
DE2200771A1 (de)	1972-07-20
US3896273A (en)	1975-07-22

Publication	Publication Date	Title
BE785523A (fr)	1972-10-16	Cyclopropane-carboxylates d'alpha-cyanobenzyles
BE796501A (fr)	1973-07-02	Jeu d'elements pour meubles
BE777659A (fr)	1972-05-02	Suppresseur d'echo numerique
BE787255A (fr)	1972-12-01	Plaque d'immatriculation
BG26673A3 (bg)	1979-05-15	Фотоколимеризуем състав
SE387800B (sv)	1976-09-13	Digital ekoeliminator
IT961748B (it)	1973-12-10	Trasduttore
BE786707A (fr)	1972-11-16	Preparation de mitraille
BE776426A (fr)	1972-04-04	Garniture d'etancheite
IT963420B (it)	1974-01-10	Trasduttore elettromagnetico perfezionato
JPS5718660A (en)	1982-01-30	Sulfonamide compound
BE791197A (fr)	1973-03-01	Compositions de castine
BE772047A (fr)	1972-01-17	Circuit de suppression d'echo digital
IT966335B (it)	1974-02-11	Composizione disinfestante
BE791415A (fr)	1973-05-16	Circuit d'arret de sonnerie
BE789658A (fr)	1973-04-04	Compositions polyurethanne-goudron
AR194759A1 (es)	1973-08-14	Videografo
BE791974A (fr)	1973-05-28	Systeme d'amarrage
BE775619A (fr)	1972-05-19	Compositions anesthesiques
BE790797A (fr)	1973-04-30	Benzophenones thiomethylees
IT963593B (it)	1974-01-21	Composizioni e procedimento per fotografia
BE790435A (fr)	1973-02-15	Garniture d'etancheite
FI55752B (fi)	1979-06-29	Foerfarande foer kontrollerande av icke oenskade vaextarter
IT966191B (it)	1974-02-11	Stucco
FR2280262A1 (fr)	1976-02-20	Suppresseur d'echo

Legal Events

Date	Code	Title	Description
1989-07-31	RE	Patent lapsed	Owner name: COMMUNICATIONS SATELLITE CORP. Effective date: 19890131

Date

Code

Title

Description

1989-07-31

Patent lapsed

Owner name: COMMUNICATIONS SATELLITE CORP.

Effective date: 19890131