DE3062462D1 - Device for carrier detection in a modem provided with an echo canceller - Google Patents

Device for carrier detection in a modem provided with an echo canceller

Info

Publication number
DE3062462D1
DE3062462D1 DE8080201034T DE3062462T DE3062462D1 DE 3062462 D1 DE3062462 D1 DE 3062462D1 DE 8080201034 T DE8080201034 T DE 8080201034T DE 3062462 T DE3062462 T DE 3062462T DE 3062462 D1 DE3062462 D1 DE 3062462D1
Authority
DE
Germany
Prior art keywords
echo canceller
carrier detection
modem provided
modem
carrier
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
Application number
DE8080201034T
Other languages
German (de)
English (en)
Inventor
Loic Bernard Yves Guidoux
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.)
Telecommunications Radioelectriques et Telephoniques SA TRT
Original Assignee
Telecommunications Radioelectriques et Telephoniques SA TRT
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 Telecommunications Radioelectriques et Telephoniques SA TRT filed Critical Telecommunications Radioelectriques et Telephoniques SA TRT
Application granted granted Critical
Publication of DE3062462D1 publication Critical patent/DE3062462D1/de
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/20—Arrangements for detecting or preventing errors in the information received using signal quality detector
    • H04L1/206—Arrangements for detecting or preventing errors in the information received using signal quality detector for modulated 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Quality & Reliability (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
DE8080201034T 1979-11-07 1980-10-31 Device for carrier detection in a modem provided with an echo canceller Expired DE3062462D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7927479A FR2469837A1 (fr) 1979-11-07 1979-11-07 Dispositif de detection de porteuse dans un modem muni d'un annuleur d'echo

Publications (1)

Publication Number Publication Date
DE3062462D1 true DE3062462D1 (en) 1983-04-28

Family

ID=9231397

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8080201034T Expired DE3062462D1 (en) 1979-11-07 1980-10-31 Device for carrier detection in a modem provided with an echo canceller

Country Status (6)

Country Link
US (1) US4355406A (enExample)
EP (1) EP0028857B1 (enExample)
JP (1) JPS56138352A (enExample)
CA (1) CA1149022A (enExample)
DE (1) DE3062462D1 (enExample)
FR (1) FR2469837A1 (enExample)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2517906A1 (fr) * 1981-12-03 1983-06-10 Centre Nat Rech Scient Annulateur d'echo a commande automatique de gain pour systemes de transmission
US4443884A (en) * 1982-03-18 1984-04-17 Protocol Computers, Inc. Data line interface
JPH0666819B2 (ja) * 1982-09-30 1994-08-24 富士通株式会社 キヤリア検出方式
FR2534754A1 (fr) * 1982-10-15 1984-04-20 Trt Telecom Radio Electr Recepteur pour modem de transmission de donnees, comportant un annuleur d'echo et un egaliseur
US4593399A (en) * 1983-05-09 1986-06-03 Racal Data Communications Inc. Method and apparatus for maximizing efficiency in satellite communications
GB2146509B (en) * 1983-09-10 1986-08-13 Stc Plc Data transmission system
US4554508A (en) * 1983-12-07 1985-11-19 American Microsystems, Incorporated Carrier detection circuit
SE441052B (sv) * 1984-02-01 1985-09-02 Ellemtel Utvecklings Ab Forfarande for att testa funktionen hos en anordning for adaptiv ekoeliminering
US4546490A (en) * 1984-03-22 1985-10-08 Northern Telecom Limited Single frequency detection circuit
DE3583052D1 (de) * 1984-03-30 1991-07-11 Siemens Ag Schaltungsanordnung zum pruefen der funktionsfaehigkeit einer datenuebertragunseinrichtung.
US4766601A (en) * 1985-12-23 1988-08-23 Tektronix, Inc. Constant carrier watchdog
US4742510A (en) * 1986-04-04 1988-05-03 Massachusetts Institute Of Technology Near and far echo canceller for data communications
US4995030A (en) * 1988-02-01 1991-02-19 Memotec Datacom, Inc. Far end echo cancellation method and apparatus
CN111934656A (zh) * 2020-08-20 2020-11-13 索伦特(天津)自动化技术有限公司 气体超声流量计自动增益调整的滞回比较电路及实现方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE626509A (enExample) * 1961-12-29
US3275759A (en) * 1963-04-15 1966-09-27 Bell Telephone Labor Inc Break-in arrangement with compensation for variations in the trans-hybrid loss for echo suppressors
US3560669A (en) * 1969-02-25 1971-02-02 Wescom Echo suppressor
US3783194A (en) * 1972-11-20 1974-01-01 Milgo Electronic Corp Data modem having a fast turn-around time over direct distance dialed networks
US4009356A (en) * 1974-01-31 1977-02-22 Milgo Electronic Corporation Data modems having data drop-out and data echo protection
DE2442822C3 (de) * 1974-09-06 1979-04-05 Siemens Ag, 1000 Berlin Und 8000 Muenchen Schaltungsanordnung zur Messung von auf Datenubertragungsstrecken auftretenden Pegelunterbrechungen und Pegelabsenkungen

Also Published As

Publication number Publication date
FR2469837A1 (fr) 1981-05-22
US4355406A (en) 1982-10-19
FR2469837B1 (enExample) 1982-08-13
CA1149022A (en) 1983-06-28
EP0028857B1 (fr) 1983-03-23
JPS6324582B2 (enExample) 1988-05-21
EP0028857A1 (fr) 1981-05-20
JPS56138352A (en) 1981-10-28

Similar Documents

Publication Publication Date Title
GB2003971B (en) Lid device for use in a motorcar
GB2049221B (en) Automatic masking device for use in a printer
JPS55143143A (en) Ultrasoniccwave reflection device
GB2016694B (en) Position detecting device
GB2013113A (en) Device for use in an automatic machine
JPS52121403A (en) Automatic sheet charging device for business machine
GB2057125B (en) Photoelectric detecting device
GB2092187B (en) Yarn-break/yarn-stop detecting device
IL52661A0 (en) An echo canceller
GB2087272B (en) Engine positioning device in engine test device
GB2054008B (en) Turbo-coring device equipped with a following pipe
JPS55159892A (en) Device for preventing pollution
JPS54155528A (en) Fuel cost reducing device
JPS55146141A (en) Ultrasoniccwave reflection device
JPS56124667A (en) Carrying device for fuel
JPS55121881A (en) Device for preventing pollution
JPS52102578A (en) Device for detecting close object
JPS54388A (en) Connecting device for float ship
JPS55141697A (en) Failed fuel position detecting device
JPS5637594A (en) Device for transporting nuclear fuel
JPS53129316A (en) Device for conducting works in tanks
JPS52136680A (en) Device for detecting oil leakage in tank
JPS5356585A (en) Device for automatically feeding container
JPS5513418A (en) Passenger number detecting device
JPS5617758A (en) Station indication and detection device for unattended vehicle

Legal Events

Date Code Title Description
8339 Ceased/non-payment of the annual fee