SE427144B - Halvekosperr - Google Patents

Halvekosperr

Info

Publication number: SE427144B
Authority: SE; Sweden
Prior art keywords: accumulator; channel; signal; threshold; output
Prior art date: 1977-10-03

Application number

SE7810237A

Other languages

English (en)

Swedish (sv)

Other versions

SE7810237L (sv

Inventor

J Luder

Original Assignee

Cit Alcatel

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.)

1977-10-03

Filing date

1978-09-29

Publication date

1983-03-07

1978-09-29 Application filed by Cit Alcatel filed Critical Cit Alcatel

1979-04-04 Publication of SE7810237L publication Critical patent/SE7810237L/xx

1983-03-07 Publication of SE427144B publication Critical patent/SE427144B/sv

Links

230000005540 biological transmission Effects 0.000 claims description 33
230000000903 blocking effect Effects 0.000 claims description 17
230000004888 barrier function Effects 0.000 claims description 7
230000009467 reduction Effects 0.000 claims description 4
230000002238 attenuated effect Effects 0.000 claims 1
238000010586 diagram Methods 0.000 description 15
230000001186 cumulative effect Effects 0.000 description 11
238000001514 detection method Methods 0.000 description 6
230000015654 memory Effects 0.000 description 6
230000006870 function Effects 0.000 description 5
230000001960 triggered effect Effects 0.000 description 4
230000000694 effects Effects 0.000 description 3
230000008859 change Effects 0.000 description 2
230000008878 coupling Effects 0.000 description 2
238000010168 coupling process Methods 0.000 description 2
238000005859 coupling reaction Methods 0.000 description 2
230000003111 delayed effect Effects 0.000 description 2
238000005516 engineering process Methods 0.000 description 2
238000000034 method Methods 0.000 description 2
230000004044 response Effects 0.000 description 2
238000005070 sampling Methods 0.000 description 2
206010034719 Personality change Diseases 0.000 description 1
230000006399 behavior Effects 0.000 description 1
230000006835 compression Effects 0.000 description 1
238000007906 compression Methods 0.000 description 1
230000001627 detrimental effect Effects 0.000 description 1
230000007774 longterm Effects 0.000 description 1
230000035484 reaction time Effects 0.000 description 1
230000000717 retained effect Effects 0.000 description 1

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)
Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)
Interface Circuits In Exchanges (AREA)

SE7810237A 1977-10-03 1978-09-29 Halvekosperr SE427144B (sv)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
FR7729637A FR2404969A1 (fr)	1977-10-03	1977-10-03	Demi-suppresseur d'echo pour une ligne telephonique a quatre fils

Publications (2)

Publication Number	Publication Date
SE7810237L SE7810237L (sv)	1979-04-04
SE427144B true SE427144B (sv)	1983-03-07

Family

ID=9196025

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
SE7810237A SE427144B (sv)	1977-10-03	1978-09-29	Halvekosperr

Country Status (12)

Country	Link
US (1)	US4213014A (fr)
JP (1)	JPS5460514A (fr)
BE (1)	BE870463A (fr)
CA (1)	CA1105629A (fr)
DE (1)	DE2842082C3 (fr)
FR (1)	FR2404969A1 (fr)
GB (1)	GB2005968B (fr)
IE (1)	IE47268B1 (fr)
IT (1)	IT1160684B (fr)
LU (1)	LU80315A1 (fr)
NL (1)	NL7809925A (fr)
SE (1)	SE427144B (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US4275270A (en) *	1979-11-29	1981-06-23	The Regents Of The University Of California	Speech detector for use in an adaptive hybrid circuit
US4354062A (en) *	1980-01-31	1982-10-12	Bell Telephone Laboratories, Incorporated	Communication system signaling circuit
JPS5797262A (en) *	1980-12-09	1982-06-16	Nippon Telegr & Teleph Corp <Ntt>	Loud speaker telephone set system
US4549290A (en) *	1983-06-10	1985-10-22	Bell David B	Voice/data digital, duplex link
US5016271A (en) *	1989-05-30	1991-05-14	At&T Bell Laboratories	Echo canceler-suppressor speakerphone
FI89756C (fi) *	1991-11-04	1993-11-10	Nokia Telecommunications Oy	Foerfarande foer olineaer signalbehandling i en ekoslaeckare
US5471527A (en)	1993-12-02	1995-11-28	Dsc Communications Corporation	Voice enhancement system and method
US5764753A (en) *	1995-09-29	1998-06-09	Crystal Semiconductor Corp.	Half-duplex controller
US7065207B2 (en) *	2003-09-11	2006-06-20	Freescale Semiconductor, Inc.	Controlling attenuation during echo suppression

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3896273A (en) *	1971-01-08	1975-07-22	Communications Satellite Corp	Digital echo suppressor
US3825694A (en) *	1972-10-30	1974-07-23	Cit Alcatel	Conversation detector for a telephonic channel concentrator
US4051332A (en) *	1973-08-20	1977-09-27	Nippon Telegraph And Telephone Public Corporation	Multiplex digital echo suppression system
IT1030881B (it) *	1973-12-10	1979-04-10	Cit Alcatel	Semi soppressore di eco per un terminale di una linea elettrica a quattro fili
US3906172A (en) *	1974-04-22	1975-09-16	Gen Electric	Digital echo suppressor
US3937907A (en) *	1974-06-13	1976-02-10	Communications Satellite Corporation	Digital echo suppressor
US4088851A (en) *	1976-04-28	1978-05-09	Wescom, Inc.	Digital echo suppressor

1977
- 1977-10-03 FR FR7729637A patent/FR2404969A1/fr active Granted
1978
- 1978-09-14 BE BE1009055A patent/BE870463A/fr not_active IP Right Cessation
- 1978-09-19 GB GB7837403A patent/GB2005968B/en not_active Expired
- 1978-09-21 US US05/944,282 patent/US4213014A/en not_active Expired - Lifetime
- 1978-09-27 DE DE2842082A patent/DE2842082C3/de not_active Expired
- 1978-09-29 SE SE7810237A patent/SE427144B/sv not_active IP Right Cessation
- 1978-10-02 IE IE1966/78A patent/IE47268B1/en not_active IP Right Cessation
- 1978-10-02 NL NL7809925A patent/NL7809925A/xx not_active Application Discontinuation
- 1978-10-02 CA CA312,471A patent/CA1105629A/fr not_active Expired
- 1978-10-02 IT IT69271/78A patent/IT1160684B/it active
- 1978-10-02 LU LU80315A patent/LU80315A1/fr unknown
- 1978-10-03 JP JP12126878A patent/JPS5460514A/ja active Pending

Also Published As

Publication number	Publication date
FR2404969B1 (fr)	1980-04-04
LU80315A1 (fr)	1979-06-15
IE47268B1 (en)	1984-02-08
BE870463A (fr)	1979-03-14
IT7869271A0 (it)	1978-10-02
DE2842082A1 (de)	1979-04-05
US4213014A (en)	1980-07-15
GB2005968A (en)	1979-04-25
CA1105629A (fr)	1981-07-21
GB2005968B (en)	1982-02-03
DE2842082C3 (de)	1982-02-11
DE2842082B2 (de)	1981-04-30
NL7809925A (nl)	1979-04-05
SE7810237L (sv)	1979-04-04
IE781966L (en)	1979-04-03
FR2404969A1 (fr)	1979-04-27
IT1160684B (it)	1987-03-11
JPS5460514A (en)	1979-05-16

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1995-01-31

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1995-06-12

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