DE3533867A1 - Verfahren zur echokompensation - Google Patents

Verfahren zur echokompensation

Info

Publication number
DE3533867A1
DE3533867A1 DE19853533867 DE3533867A DE3533867A1 DE 3533867 A1 DE3533867 A1 DE 3533867A1 DE 19853533867 DE19853533867 DE 19853533867 DE 3533867 A DE3533867 A DE 3533867A DE 3533867 A1 DE3533867 A1 DE 3533867A1
Authority
DE
Germany
Prior art keywords
capacitors
potential
capacitor
signals
compensation
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.)
Granted
Application number
DE19853533867
Other languages
German (de)
English (en)
Other versions
DE3533867C2 (enrdf_load_stackoverflow
Inventor
Bernward Dipl Ing Roessler
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.)
Siemens Corp
Original Assignee
Siemens 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 Siemens Corp filed Critical Siemens Corp
Priority to DE19853533867 priority Critical patent/DE3533867A1/de
Publication of DE3533867A1 publication Critical patent/DE3533867A1/de
Application granted granted Critical
Publication of DE3533867C2 publication Critical patent/DE3533867C2/de
Granted 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
    • 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
    • H03M1/42—Sequential comparisons in series-connected stages with no change in value of analogue signal
    • 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)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Theoretical Computer Science (AREA)
  • Analogue/Digital Conversion (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
DE19853533867 1985-09-23 1985-09-23 Verfahren zur echokompensation Granted DE3533867A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19853533867 DE3533867A1 (de) 1985-09-23 1985-09-23 Verfahren zur echokompensation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19853533867 DE3533867A1 (de) 1985-09-23 1985-09-23 Verfahren zur echokompensation

Publications (2)

Publication Number Publication Date
DE3533867A1 true DE3533867A1 (de) 1987-03-26
DE3533867C2 DE3533867C2 (enrdf_load_stackoverflow) 1993-04-22

Family

ID=6281688

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19853533867 Granted DE3533867A1 (de) 1985-09-23 1985-09-23 Verfahren zur echokompensation

Country Status (1)

Country Link
DE (1) DE3533867A1 (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1989001723A1 (en) * 1987-08-14 1989-02-23 Gec Plessey Telecommunications Limited Echo canceller
GB2440770A (en) * 2006-08-11 2008-02-13 Sharp Kk Switched capacitor DAC

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4129863A (en) * 1977-10-03 1978-12-12 Regents Of The University Of California Weighted capacitor analog/digital converting apparatus and method

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4129863A (en) * 1977-10-03 1978-12-12 Regents Of The University Of California Weighted capacitor analog/digital converting apparatus and method

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
O. AGAZZI, D.A. MESSERSCHMITT, D.A. HODGES "Noulinear Echo Cancellation of Data Signals" International Conference on Communication 1982 Conference Record 7G6.1-6.5 *
O.E. AGAZZI: "Large scale integration of hybrid- method digital subscriber loops" Dissertation Universität von Kalifornien, Berkeley 20.5.1982 *
T.L. Mc Creary "Successive Approximation Ana- log-to-Digital Conversion Techniques in MOS In- tegrated Circuits" Dissertation, Universität von Kalifornien, Berkeley 1975 *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1989001723A1 (en) * 1987-08-14 1989-02-23 Gec Plessey Telecommunications Limited Echo canceller
EP0303363A3 (en) * 1987-08-14 1989-06-07 Gec Plessey Telecommunications Limited Echo canceller
US4972406A (en) * 1987-08-14 1990-11-20 The General Electric Company, P.L.C. Echo canceller
GB2440770A (en) * 2006-08-11 2008-02-13 Sharp Kk Switched capacitor DAC
US8421784B2 (en) 2006-08-11 2013-04-16 Sharp Kabushiki Kaisha Display

Also Published As

Publication number Publication date
DE3533867C2 (enrdf_load_stackoverflow) 1993-04-22

Similar Documents

Publication Publication Date Title
DE69015373T2 (de) Digital-analog-wandler mit grossem dynamikbereich, hoher genauigkeit und hoher geschwindigkeit.
DE3310335C2 (enrdf_load_stackoverflow)
EP0054079B1 (de) MOS-Parallel-A/D-Wandler
DE4003758A1 (de) Verfahren und vorrichtung zum umformen von analog/digital-nichtlinearitaeten in statisches rauschen
DE69127179T2 (de) Verfahren zur Konversion eines digitalen Signals in ein analoges Signals in einem Digital/Analog-Wandler
DE19958049A1 (de) Im Analog-Strommodus arbeitender D/A-Wandler
DE69602959T2 (de) Vorrichtung zur digitalverarbeitung eines analogsignals, welches auch wieder in analoger form ausgegeben werden soll
DE2602382C2 (de) Reihen-Parallel-Analog-Digital-Umsetzereinrichtung
EP0217120B1 (de) Schaltungsanordnung zur Echokompensation
DE2947072C2 (de) (b + a)-Bit-D/A-Wandler mit b-Bit- Hilfs-D/A-Wandler
DE2337442A1 (de) Verfahren und schaltungsanordnung zum kombinieren eines analogen signals mit einem digitalen signal
DE2553694A1 (de) Ladungsgekoppelter verstaerker
DE2432299A1 (de) Signal-formungsschaltung
DE3533867C2 (enrdf_load_stackoverflow)
EP0217119A2 (de) Verfahren zur Digital-Analog-Wandlung digitaler Informationen in bipolare Analogsignale
EP0028307B1 (de) Schaltungsanordnung für einen Analogvergleicher
DE1290180B (de) Einrichtung zum Umsetzen von Analogwerten in Zahlenwerte nach dem Vergleichsverfahren
DE3031592C2 (de) Verfahren zum Nullpunktabgleich des durch einen Operationsverstärker realisierten Analogwertvergleichers eines unter Verwendung eines Digital-Analog-Wandlers nach dem Iterativprinzip arbeitenden Analog-Digital-Wandlers, insbesondere bei dessen Zugehörigkeit zu einer Einrichtung zur Analog-Digital-Wandlung und umgekehrt zur Digital-Analog-Wandlung (Codec)
DE1935124C3 (de) Spannungskomparator
DE2646737B2 (de) Hilfstraeger-regenerationsschaltung fuer einen farbfernsehempfaenger
DE3308703A1 (de) Konferenzgespraechsschaltung
DE69413633T2 (de) Methode und Vorrichtung zur Abtastung von elektrischen Signalen
DE3128306A1 (de) Schaltungsvorrichtung zur digitalisierung und extremwertermittlung analoger signale
EP0012985A1 (de) Dual-Slope-Integrator
CH677992A5 (enrdf_load_stackoverflow)

Legal Events

Date Code Title Description
8110 Request for examination paragraph 44
D2 Grant after examination
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee