NL7902053A - Echocompensator voor homochrone data overdrachtssyste- men. - Google Patents

Echocompensator voor homochrone data overdrachtssyste- men. Download PDF

Info

Publication number
NL7902053A
NL7902053A NL7902053A NL7902053A NL7902053A NL 7902053 A NL7902053 A NL 7902053A NL 7902053 A NL7902053 A NL 7902053A NL 7902053 A NL7902053 A NL 7902053A NL 7902053 A NL7902053 A NL 7902053A
Authority
NL
Netherlands
Prior art keywords
signal
circuit
limiter
processing device
echo
Prior art date
Application number
NL7902053A
Other languages
English (en)
Dutch (nl)
Original Assignee
Philips Nv
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.)
Filing date
Publication date
Application filed by Philips Nv filed Critical Philips Nv
Priority to NL7902053A priority Critical patent/NL7902053A/nl
Priority to CA000347104A priority patent/CA1152594A/en
Priority to US06/128,418 priority patent/US4334128A/en
Priority to FR8005321A priority patent/FR2451677B1/fr
Priority to IT20554/80A priority patent/IT1129647B/it
Priority to SE8001920D priority patent/SE8001920L/sv
Priority to SE8001920A priority patent/SE453551B/sv
Priority to GB8008371A priority patent/GB2045585B/en
Priority to DE19803009450 priority patent/DE3009450A1/de
Priority to JP3098380A priority patent/JPS55125734A/ja
Priority to AU56441/80A priority patent/AU529759B2/en
Publication of NL7902053A publication Critical patent/NL7902053A/nl

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/14—Two-way operation using the same type of signal, i.e. duplex
    • H04L5/1423—Two-way operation using the same type of signal, i.e. duplex for simultaneous baseband signals
    • 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
NL7902053A 1979-03-15 1979-03-15 Echocompensator voor homochrone data overdrachtssyste- men. NL7902053A (nl)

Priority Applications (11)

Application Number Priority Date Filing Date Title
NL7902053A NL7902053A (nl) 1979-03-15 1979-03-15 Echocompensator voor homochrone data overdrachtssyste- men.
CA000347104A CA1152594A (en) 1979-03-15 1980-03-06 Echo canceler for homochronous data transmission systems
US06/128,418 US4334128A (en) 1979-03-15 1980-03-10 Echo canceler for homochronous data transmission systems
FR8005321A FR2451677B1 (fr) 1979-03-15 1980-03-10 Compensateur d'echo pour systeme de transfert de donnees homochrones
IT20554/80A IT1129647B (it) 1979-03-15 1980-03-12 Dispositivo per la soppressione dell'eco per sistemi omocroni di trasmissione di dati
SE8001920D SE8001920L (sv) 1979-03-15 1980-03-12 Ekoeliminator for homokrona datatransmissionsanleggningar
SE8001920A SE453551B (sv) 1979-03-15 1980-03-12 Ekoeliminator for homokrona datatransmissionsanleggningar
GB8008371A GB2045585B (en) 1979-03-15 1980-03-12 Echo canceller with limited and residual signal
DE19803009450 DE3009450A1 (de) 1979-03-15 1980-03-12 Echoausgleichsanordnung fuer homochrone datenuebertragungssysteme
JP3098380A JPS55125734A (en) 1979-03-15 1980-03-13 Echo canceller
AU56441/80A AU529759B2 (en) 1979-03-15 1980-03-14 Echo cancellor

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL7902053 1979-03-15
NL7902053A NL7902053A (nl) 1979-03-15 1979-03-15 Echocompensator voor homochrone data overdrachtssyste- men.

Publications (1)

Publication Number Publication Date
NL7902053A true NL7902053A (nl) 1980-09-17

Family

ID=19832807

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7902053A NL7902053A (nl) 1979-03-15 1979-03-15 Echocompensator voor homochrone data overdrachtssyste- men.

Country Status (10)

Country Link
US (1) US4334128A (sv)
JP (1) JPS55125734A (sv)
AU (1) AU529759B2 (sv)
CA (1) CA1152594A (sv)
DE (1) DE3009450A1 (sv)
FR (1) FR2451677B1 (sv)
GB (1) GB2045585B (sv)
IT (1) IT1129647B (sv)
NL (1) NL7902053A (sv)
SE (2) SE453551B (sv)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2490901A1 (fr) * 1980-09-19 1982-03-26 Trt Telecom Radio Electr Annuleur d'echo numerique muni d'un convertisseur analogique-numerique a dynamique reglable
JPS6046899B2 (ja) * 1980-09-26 1985-10-18 日本電気株式会社 反響消去装置
NL8100650A (nl) * 1981-02-11 1982-09-01 Philips Nv Inrichting voor het corrigeren van pulsvervorming bij homochrone datatransmissie.
NL8102225A (nl) * 1981-05-07 1982-12-01 Philips Nv Inrichting voor het compenseren van echosignalen.
FR2528643A1 (fr) * 1982-06-14 1983-12-16 Trt Telecom Radio Electr Procede destine a reduire le temps de convergence d'un annuleur d'echo et dispositif utilise pour mettre en oeuvre ce procede
FR2534427A1 (fr) * 1982-10-11 1984-04-13 Trt Telecom Radio Electr Annuleur d'echo pour signal de donnees en bande de base
US4621172A (en) * 1982-12-22 1986-11-04 Nec Corporation Fast convergence method and system for echo canceller
US4562312A (en) * 1983-02-17 1985-12-31 At&T Bell Laboratories Subsampling delay estimator for an echo canceler
FR2546693B1 (fr) * 1983-05-26 1985-08-30 Centre Nat Rech Scient Annuleur d'echo a filtre numerique adaptatif pour systeme de transmission
US4707824A (en) * 1983-12-15 1987-11-17 Nec Corporation Method and apparatus for cancelling echo
NZ214905A (en) * 1985-01-29 1988-09-29 British Telecomm Noise cancellation by adaptive filter compensates for timing variations
JPS62171329A (ja) * 1986-01-24 1987-07-28 Nec Corp エコ−消去方式
EP0482003B1 (en) * 1989-05-12 1994-12-14 Plessey Semiconductors Limited Audio signal processor circuit
CA2073082C (en) * 1991-07-08 1997-09-09 Takanori Iwamatsu Fractionally spaced cross-polarization interference canceller
US5204854A (en) * 1991-08-23 1993-04-20 Sierra Semiconductor Corporation Adaptive hybrid
FI104134B (sv) * 1997-07-31 1999-11-15 Nokia Networks Oy Data- och strömtillförsel förverkligande kabelanpassning
DE19937505C2 (de) * 1999-08-09 2001-07-26 Infineon Technologies Ag Empfangsverfahren und Empfängeranordnung für ein Duplex-Übertragungssystem

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3499999A (en) * 1966-10-31 1970-03-10 Bell Telephone Labor Inc Closed loop adaptive echo canceller using generalized filter networks
US3789165A (en) * 1972-04-24 1974-01-29 Communications Satellite Corp Echo canceller with variable threshold
FR2272544B1 (sv) * 1974-05-24 1977-03-11 Cit Alcatel
NL170688C (nl) * 1976-06-28 1982-12-01 Philips Nv Inrichting voor simultane tweerichtingsdatatransmissie over tweedraadsverbindingen.
US4129753A (en) * 1977-12-09 1978-12-12 Bell Telephone Laboratories, Incorporated Echo canceller using feedback to improve speech detector performance

Also Published As

Publication number Publication date
SE8001920L (sv) 1980-09-16
GB2045585B (en) 1983-11-16
FR2451677A1 (fr) 1980-10-10
US4334128A (en) 1982-06-08
SE453551B (sv) 1988-02-08
AU529759B2 (en) 1983-06-16
IT8020554A0 (it) 1980-03-12
JPS55125734A (en) 1980-09-27
FR2451677B1 (fr) 1987-04-17
DE3009450A1 (de) 1980-09-25
GB2045585A (en) 1980-10-29
AU5644180A (en) 1980-09-18
CA1152594A (en) 1983-08-23
JPS644382B2 (sv) 1989-01-25
IT1129647B (it) 1986-06-11

Similar Documents

Publication Publication Date Title
NL7902053A (nl) Echocompensator voor homochrone data overdrachtssyste- men.
US4362909A (en) Echo canceler with high-pass filter
Verhoeckx et al. Digital echo cancellation for baseband data transmission
EP0464500B1 (en) Echo canceler having adaptive digital filter unit associated with delta-sigma modulation circuit
US5793801A (en) Frequency domain signal reconstruction compensating for phase adjustments to a sampling signal
EP0048979B2 (en) Echo canceller for a long-distance telephone network
US4355214A (en) Adaptive echo canceller for full-duplex transmission of data
JPS5842662B2 (ja) エコ−除去装置
US5351291A (en) Adaptive echo cancellation method and device for implementing said method
CA1189926A (en) Arrangement for cancelling echo signals
US4411006A (en) Digital bit rate synchronizer for digital echo cancellers and similar signal processing devices
GB2164827A (en) Method of cancelling echoes in full-duplex data transmission system
EP0057953A2 (en) Arrangement for correcting pulse distortion in homochronous data transmission
US4272648A (en) Gain control apparatus for digital telephone line circuits
JP2928801B2 (ja) エコー相殺方法および加入者ラインオーディオ処理回路
CN1258965A (zh) 用于脉冲幅度调制信号的混合模式近端串音/回波消除器
EP0122594A2 (en) Line circuit with echo compensation
US5084866A (en) Transversal filter echo canceller
EP0388493A1 (en) Digital echo canceller for full-duplex modem with frequency offset tracking
JPS6167330A (ja) エコ−除去方法
JPS58223928A (ja) エコ−キヤンセラ−装置
JPS6167331A (ja) エコ−除去装置
JPS6266728A (ja) エコ−除去装置
JPS6175629A (ja) エコ−除去方法
JPS6175631A (ja) エコ−除去装置

Legal Events

Date Code Title Description
A1B A search report has been drawn up
BT A notification was added to the application dossier and made available to the public
A85 Still pending on 85-01-01
BC A request for examination has been filed
BI The patent application has been withdrawn