DE3778702D1 - Analog-digital/digital-analogwandlersystem und geraet zur echoannullierung unter verwendung eines solchen systems. - Google Patents

Analog-digital/digital-analogwandlersystem und geraet zur echoannullierung unter verwendung eines solchen systems.

Info

Publication number
DE3778702D1
DE3778702D1 DE8787480016T DE3778702T DE3778702D1 DE 3778702 D1 DE3778702 D1 DE 3778702D1 DE 8787480016 T DE8787480016 T DE 8787480016T DE 3778702 T DE3778702 T DE 3778702T DE 3778702 D1 DE3778702 D1 DE 3778702D1
Authority
DE
Germany
Prior art keywords
digital
analog
analogue
echo cancellation
analog converter
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Fee Related
Application number
DE8787480016T
Other languages
English (en)
Inventor
Michel Ferry
Christian Jacquart
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
International Business Machines Corp
Original Assignee
International Business Machines 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.)
Filing date
Publication date
Application filed by International Business Machines Corp filed Critical International Business Machines Corp
Application granted granted Critical
Publication of DE3778702D1 publication Critical patent/DE3778702D1/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

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
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06J—HYBRID COMPUTING ARRANGEMENTS
    • G06J1/00—Hybrid computing arrangements
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/02—Reversible analogue/digital converters
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/12—Analogue/digital converters
    • H03M1/34—Analogue value compared with reference values
    • H03M1/38—Analogue value compared with reference values sequentially only, e.g. successive approximation type
    • H03M1/46—Analogue value compared with reference values sequentially only, e.g. successive approximation type with digital/analogue converter for supplying reference values to converter
    • 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
    • H04B3/238—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 using initial training sequence

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Computer Hardware Design (AREA)
  • Mathematical Physics (AREA)
  • Signal Processing (AREA)
  • Evolutionary Computation (AREA)
  • Fuzzy Systems (AREA)
  • General Physics & Mathematics (AREA)
  • Software Systems (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Analogue/Digital Conversion (AREA)
DE8787480016T 1987-10-30 1987-10-30 Analog-digital/digital-analogwandlersystem und geraet zur echoannullierung unter verwendung eines solchen systems. Expired - Fee Related DE3778702D1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP87480016A EP0313706B1 (de) 1987-10-30 1987-10-30 Analog-Digital/Digital-Analogwandlersystem und Gerät zur Echoannullierung unter Verwendung eines solchen Systems

Publications (1)

Publication Number Publication Date
DE3778702D1 true DE3778702D1 (de) 1992-06-04

Family

ID=8198329

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8787480016T Expired - Fee Related DE3778702D1 (de) 1987-10-30 1987-10-30 Analog-digital/digital-analogwandlersystem und geraet zur echoannullierung unter verwendung eines solchen systems.

Country Status (5)

Country Link
US (1) US5001480A (de)
EP (1) EP0313706B1 (de)
JP (1) JP2527793B2 (de)
CA (1) CA1329831C (de)
DE (1) DE3778702D1 (de)

Families Citing this family (17)

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Publication number Priority date Publication date Assignee Title
JPH07114367B2 (ja) * 1988-12-27 1995-12-06 三菱電機株式会社 信号処理装置
SE463589B (sv) * 1989-04-27 1990-12-10 Ericsson Telefon Ab L M Foerfarande foer att undvika felaktig ekoeliminering och/eller utjaemning till foeljd av olinjaeriteter i en d/a-omvandlare och/eller en a/d-omvandlare i en telekommunikationsanlaeggning, samt anordning foer utoevande av foerfarandet i samband med d/a-omvandling och anordning foer utoevande av foerfarandet i samband med a/d-omvandling
US5394437A (en) 1992-10-20 1995-02-28 At&T Corp. High-speed modem synchronized to a remote CODEC
FI96077C (fi) * 1992-11-23 1996-04-25 Salon Televisiotehdas Oy Kytkentäjärjestely digitaalisen audiosignaaliprosessorin virtuaalisen dynamiikka-alueen laajentamiseksi
EP0619559A3 (de) * 1993-04-05 1995-10-25 Nokia Mobile Phones Ltd Integrierte analog-digitale Grenzschnittstelle.
EP0732651B1 (de) * 1995-03-15 2001-09-26 Koninklijke Philips Electronics N.V. Datenverarbeitungssystem zur Ausführung von Aufgaben verschiedener Prioritäten und dieses System enthaltendes Modem
US5757298A (en) * 1996-02-29 1998-05-26 Hewlett-Packard Co. Method and apparatus for error compensation using a non-linear digital-to-analog converter
JP3780531B2 (ja) * 1997-06-30 2006-05-31 セイコーエプソン株式会社 映像信号処理回路、それを用いた映像表示装置及び電子機器並びにディジタル−アナログ変換器の出力調整方法
US6563863B1 (en) * 1998-06-22 2003-05-13 Ati International Srl Computer modem
US6577639B1 (en) 1999-06-01 2003-06-10 Ati International Srl Reducing modem transmit latency
JP3576430B2 (ja) * 1999-09-01 2004-10-13 沖電気工業株式会社 自動利得制御器
US6664907B1 (en) * 2002-06-14 2003-12-16 Dell Products L.P. Information handling system with self-calibrating digital-to-analog converter
US7201057B2 (en) * 2004-09-30 2007-04-10 Mks Instruments, Inc. High-temperature reduced size manometer
US7746255B1 (en) * 2009-02-10 2010-06-29 Himax Media Solutions, Inc. A/D converter, method for adjusting analog signal therein, and method for converting analog signal into digital signal
US10340966B2 (en) * 2016-12-27 2019-07-02 Texas Instruments Incorporated Fast transient settling in a digital step attenuator
US10897264B2 (en) * 2019-06-24 2021-01-19 Booz Allen Hamilton Inc. Data receiver for communication system
TWI819540B (zh) * 2022-03-24 2023-10-21 瑞昱半導體股份有限公司 具有電流源量測機制的數位至類比轉換裝置及其電流源量測方法

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3610896A (en) * 1969-05-20 1971-10-05 Advanced Associates Inc System for computing in the hybrid domain
US3827044A (en) * 1970-06-01 1974-07-30 Gen Dynamics Corp Analog to digital converter
US4217574A (en) * 1976-08-09 1980-08-12 Gte Laboratories Incorporated Analog to digital converter having nonlinear amplitude transformation
US4113997A (en) * 1977-07-12 1978-09-12 Communications Satellite, Corporation Analog to digital signal of logarithmic format converter and analog to pseudo-rms value converter and echo canceller utilizing same
US4348768A (en) * 1977-09-06 1982-09-07 International Telephone And Telegraph Corporation PCM Codec using common D/A converter for encoding and decoding
US4367456A (en) * 1979-03-09 1983-01-04 Northern Telecom Limited PCM and PAM Conversion circuit including signal level variation on the PCM portion of the circuit
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
JPS5765923A (en) * 1980-10-13 1982-04-21 Matsushita Electric Ind Co Ltd Code converting device
US4532494A (en) * 1981-01-09 1985-07-30 Tokyo Shibaura Denki Kabushiki Kaisha Adaptive delta codec which varies a delta signal in accordance with a characteristic of an input analog signal
JPS587918A (ja) * 1981-07-07 1983-01-17 Victor Co Of Japan Ltd 符号化復号化装置
JPS609211A (ja) * 1983-06-29 1985-01-18 Fujitsu Ltd 絶対ゲイン調整回路
US4578667A (en) * 1984-03-23 1986-03-25 Tektronix, Inc. Digital acquisition system including a high-speed sampling gate
GB8427165D0 (en) * 1984-10-26 1984-12-05 British Telecomm Adaptive recognising device

Also Published As

Publication number Publication date
EP0313706A1 (de) 1989-05-03
EP0313706B1 (de) 1992-04-29
JP2527793B2 (ja) 1996-08-28
US5001480A (en) 1991-03-19
CA1329831C (en) 1994-05-24
JPH01130625A (ja) 1989-05-23

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee