NL7200277A - - Google Patents

Info

Publication number: NL7200277A
Authority: NL; Netherlands

Application number

NL7200277A

Other versions

NL176731B (nl

NL176731C (nl

Inventor

E Fariello

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

1972-01-07

Publication date

1972-07-11

1972-01-07 Application filed filed Critical

1972-07-11 Publication of NL7200277A publication Critical patent/NL7200277A/xx

1984-12-17 Publication of NL176731B publication Critical patent/NL176731B/xx

1985-05-17 Application granted granted Critical

1985-05-17 Publication of NL176731C publication Critical patent/NL176731C/xx

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)
Theoretical Computer Science (AREA)
General Physics & Mathematics (AREA)
Physics & Mathematics (AREA)
Mathematical Analysis (AREA)
Pure & Applied Mathematics (AREA)
Mathematical Optimization (AREA)
General Engineering & Computer Science (AREA)
Computational Mathematics (AREA)
Computer Networks & Wireless Communication (AREA)
Signal Processing (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)

NLAANVRAGE7200277,A 1971-01-08 1972-01-07 Digitale echo-onderdrukker. NL176731C (nl)

Applications Claiming Priority (1)

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

Publications (3)

Publication Number	Publication Date
NL7200277A true NL7200277A (fr)	1972-07-11
NL176731B NL176731B (nl)	1984-12-17
NL176731C NL176731C (nl)	1985-05-17

Family

ID=22303879

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
NLAANVRAGE7200277,A NL176731C (nl)	1971-01-08	1972-01-07	Digitale echo-onderdrukker.

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 DE DE2200771A patent/DE2200771C2/de not_active Expired
- 1972-01-07 FR FR7200434A patent/FR2121656B1/fr not_active Expired
- 1972-01-07 NL NLAANVRAGE7200277,A patent/NL176731C/xx not_active IP Right Cessation
- 1972-01-07 CA CA131,922A patent/CA944879A/en not_active Expired
- 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
GB1371815A (en)	1974-10-30
AU3731571A (en)	1973-06-28
DE2200771C2 (de)	1986-01-30
SE374988B (fr)	1975-03-24
JPS5726015B1 (fr)	1982-06-02
US3896273A (en)	1975-07-22
DE2200771A1 (de)	1972-07-20
FR2121656A1 (fr)	1972-08-25
IT948812B (it)	1973-06-11
NL176731B (nl)	1984-12-17
CA944879A (en)	1974-04-02
BE777659A (fr)	1972-05-02
NL176731C (nl)	1985-05-17
FR2121656B1 (fr)	1977-01-14

Publication	Publication Date	Title
FR2121656B1 (fr)	1977-01-14
ATA136472A (fr)	1973-12-15
AU465403B2 (fr)	1975-09-25
AR196074A1 (fr)	1973-11-30
AU2742671A (fr)	1972-10-12
AU2894671A (fr)	1972-11-23
AU2941471A (fr)	1972-11-30
AU2952271A (fr)	1972-12-07
AU3005371A (fr)	1972-12-21
AU2927871A (fr)	1972-11-30
AR192311Q (fr)	1973-02-14
AU2740271A (fr)	1972-10-12
AU2875571A (fr)	1972-11-16
AU2755871A (fr)	1972-10-19
AU2836771A (fr)	1972-11-09
AU2837671A (fr)	1972-11-09
AU2473671A (fr)	1972-08-03
AU4958672A (fr)	1974-06-06
AU2456871A (fr)	1972-08-17
AU3038671A (fr)	1973-01-04
AU2415871A (fr)	1972-07-13
AU3025871A (fr)	1973-01-04
AU2399971A (fr)	1972-07-06
AU2963771A (fr)	1972-12-07
AU2854371A (fr)	1972-11-09

Legal Events

Date	Code	Title
1980-10-27	BB	A search report has been drawn up
1981-02-25	BC	A request for examination has been filed
1985-01-01	A85	Still pending on 85-01-01
1989-09-18	V1	Lapsed because of non-payment of the annual fee