NL7212368A - - Google Patents

Info

Publication number: NL7212368A
Authority: NL; Netherlands

Application number

NL7212368A

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.)

1971-09-20

Filing date

1972-09-12

Publication date

1973-03-22

1972-09-12 Application filed filed Critical

1973-03-22 Publication of NL7212368A publication Critical patent/NL7212368A/xx

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

Landscapes

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

NL7212368A 1971-09-20 1972-09-12 NL7212368A (xx)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US18177971A	1971-09-20	1971-09-20

Publications (1)

Publication Number	Publication Date
NL7212368A true NL7212368A (xx)	1973-03-22

Family

ID=22665762

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
NL7212368A NL7212368A (xx)	1971-09-20	1972-09-12

Country Status (9)

Country	Link
US (1)	US3780233A (xx)
JP (1)	JPS4839108A (xx)
CA (1)	CA959983A (xx)
DE (1)	DE2245542A1 (xx)
FR (1)	FR2153340B1 (xx)
GB (1)	GB1361739A (xx)
IT (1)	IT975018B (xx)
NL (1)	NL7212368A (xx)
SE (1)	SE382897B (xx)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPS535008B2 (xx) *	1972-05-15	1978-02-23
JPS5028914A (xx) *	1973-07-14	1975-03-24
FR2272544B1 (xx) *	1974-05-24	1977-03-11	Cit Alcatel
FR2517906A1 (fr) *	1981-12-03	1983-06-10	Centre Nat Rech Scient	Annulateur d'echo a commande automatique de gain pour systemes de transmission
US4542265A (en) *	1983-05-20	1985-09-17	Gte Lenkurt Incorporated	Echo canceller dynamic range extension
FR2569322B1 (fr) *	1984-08-17	1986-12-05	Trt Telecom Radio Electr	Annuleur d'echo utilisant la modulation delta
GB2213686A (en) *	1987-12-09	1989-08-16	Racal Communications Equip	Radio telephone terminal unit
US5157653A (en) *	1990-08-03	1992-10-20	Coherent Communications Systems Corp.	Residual echo elimination with proportionate noise injection
US6028929A (en) *	1997-11-14	2000-02-22	Tellabs Operations, Inc.	Echo canceller employing dual-H architecture having improved non-linear echo path detection
DE19815942A1 (de) *	1998-04-09	1999-10-14	Cit Alcatel	Vielkanal-Echocanceller mit Compander
JP3293029B2 (ja) *	1999-08-20	2002-06-17	株式会社マイクロエムズ	通信装置用２線４線変換回路

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US2825764A (en) *	1954-02-24	1958-03-04	Bell Telephone Labor Inc	Cross-control compandor used as echo suppressors
US3500000A (en) *	1966-10-31	1970-03-10	Myldred P Kelly	Self-adaptive echo canceller

1971
- 1971-09-20 US US00181779A patent/US3780233A/en not_active Expired - Lifetime
1972
- 1972-09-05 CA CA150,884A patent/CA959983A/en not_active Expired
- 1972-09-12 NL NL7212368A patent/NL7212368A/xx not_active Application Discontinuation
- 1972-09-16 DE DE2245542A patent/DE2245542A1/de not_active Ceased
- 1972-09-19 IT IT69956/72A patent/IT975018B/it active
- 1972-09-20 GB GB4364372A patent/GB1361739A/en not_active Expired
- 1972-09-20 FR FR7233313A patent/FR2153340B1/fr not_active Expired
- 1972-09-20 SE SE7212141A patent/SE382897B/xx unknown
- 1972-09-20 JP JP47094435A patent/JPS4839108A/ja active Pending

Also Published As

Publication number	Publication date
CA959983A (en)	1974-12-24
JPS4839108A (xx)	1973-06-08
GB1361739A (en)	1974-07-30
FR2153340A1 (xx)	1973-05-04
IT975018B (it)	1974-07-20
US3780233A (en)	1973-12-18
SE382897B (sv)	1976-02-16
FR2153340B1 (xx)	1976-10-29
DE2245542A1 (de)	1973-03-29

Publication	Publication Date	Title
ATA136472A (xx)	1973-12-15
FR2153340B1 (xx)	1976-10-29
AU2658571A (xx)	1972-09-21
AU2691671A (xx)	1972-09-28
AU2894671A (xx)	1972-11-23
AU2485671A (xx)	1972-08-03
AU2742671A (xx)	1972-10-12
AU2941471A (xx)	1972-11-30
AU2684071A (xx)	1972-09-28
AU2952271A (xx)	1972-12-07
AU3005371A (xx)	1972-12-21
AU2564071A (xx)	1972-08-24
AU2473671A (xx)	1972-08-03
AU2836771A (xx)	1972-11-09
AU3038671A (xx)	1973-01-04
AU2503871A (xx)	1972-08-10
AU3025871A (xx)	1973-01-04
AU2577671A (xx)	1972-08-24
AU2588771A (xx)	1972-08-31
AU2654071A (xx)	1972-09-21
AU2456871A (xx)	1972-08-17
AU2669471A (xx)	1972-09-21
AR192311Q (xx)	1973-02-14
AU2684171A (xx)	1971-07-15
AU2415871A (xx)	1972-07-13

Legal Events

Date	Code	Title
1979-05-25	BA	A request for search or an international-type search has been filed
1980-11-25	BB	A search report has been drawn up
1981-01-26	BC	A request for examination has been filed
1983-05-02	BV	The patent application has lapsed