IT948812B - Sistema di comunicazione con soppressore d eco di tipo digitale - Google Patents

Sistema di comunicazione con soppressore d eco di tipo digitale

Info

Publication number
IT948812B
IT948812B IT67049/72A IT6704972A IT948812B IT 948812 B IT948812 B IT 948812B IT 67049/72 A IT67049/72 A IT 67049/72A IT 6704972 A IT6704972 A IT 6704972A IT 948812 B IT948812 B IT 948812B
Authority
IT
Italy
Prior art keywords
eco
suppressor
communication system
digital type
digital
Prior art date
Application number
IT67049/72A
Other languages
English (en)
Original Assignee
Communications Satelite 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 Communications Satelite Corp filed Critical Communications Satelite Corp
Application granted granted Critical
Publication of IT948812B publication Critical patent/IT948812B/it

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F7/00—Methods or arrangements for processing data by operating upon the order or content of the data handled
    • G06F7/02—Comparing digital values
    • G06F7/026—Magnitude comparison, i.e. determining the relative order of operands based on their numerical value, e.g. window comparator
    • 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)
  • Theoretical Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Physics & Mathematics (AREA)
  • Mathematical Analysis (AREA)
  • Pure & Applied Mathematics (AREA)
  • Mathematical Optimization (AREA)
  • General Engineering & Computer Science (AREA)
  • Computational Mathematics (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)
IT67049/72A 1971-01-08 1972-01-07 Sistema di comunicazione con soppressore d eco di tipo digitale IT948812B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US105069A US3896273A (en) 1971-01-08 1971-01-08 Digital echo suppressor

Publications (1)

Publication Number Publication Date
IT948812B true IT948812B (it) 1973-06-11

Family

ID=22303879

Family Applications (1)

Application Number Title Priority Date Filing Date
IT67049/72A IT948812B (it) 1971-01-08 1972-01-07 Sistema di comunicazione con soppressore d eco di tipo digitale

Country Status (10)

Country Link
US (1) US3896273A (it)
JP (1) JPS5726015B1 (it)
BE (1) BE777659A (it)
CA (1) CA944879A (it)
DE (1) DE2200771C2 (it)
FR (1) FR2121656B1 (it)
GB (1) GB1371815A (it)
IT (1) IT948812B (it)
NL (1) NL176731C (it)
SE (1) SE374988B (it)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1030881B (it) * 1973-12-10 1979-04-10 Cit Alcatel Semi soppressore di eco per un terminale di una linea elettrica a quattro fili
US4012603A (en) * 1974-08-27 1977-03-15 Nippon Electric Company, Ltd. Echo suppressor having self-adaptive means
US3942116A (en) * 1975-03-13 1976-03-02 California Microwave, Inc. Transceiver having improved voice actuated carrier and echo suppression circuit
US3973086A (en) * 1975-04-24 1976-08-03 Bell Telephone Laboratories, Incorporated Digital echo suppressor break-in circuitry
US3992594A (en) * 1975-10-10 1976-11-16 Bell Telephone Laboratories, Incorporated Echo suppressor break-in circuitry
US4029912A (en) * 1975-12-10 1977-06-14 Bell Telephone Laboratories, Incorporated Common control digital echo suppressor
FR2363247A1 (fr) * 1976-08-24 1978-03-24 Cit Alcatel Equipement terminal pour un systeme multiplex telephonique a courants porteurs
FR2404969A1 (fr) * 1977-10-03 1979-04-27 Cit Alcatel Demi-suppresseur d'echo pour une ligne telephonique a quatre fils
US4123626A (en) * 1977-11-23 1978-10-31 Northern Telecom Limited Digital echo attenuation circuit for a telephone system
US4192979A (en) * 1978-06-27 1980-03-11 Communications Satellite Corporation Apparatus for controlling echo in communication systems utilizing a voice-activated switch
CA1130920A (en) * 1979-03-05 1982-08-31 William G. Crouse Speech detector with variable threshold
FR2451676A1 (fr) * 1979-03-12 1980-10-10 Soumagne Joel Detecteur d'echo notamment pour systeme de communication a interpolation de parole
CA1137240A (en) * 1980-09-09 1982-12-07 Northern Telecom Limited Method of and apparatus for echo detection in voice channel signals
US4549290A (en) * 1983-06-10 1985-10-22 Bell David B Voice/data digital, duplex link
DE3406407A1 (de) * 1983-09-29 1985-04-11 Siemens AG, 1000 Berlin und 8000 München Schaltungsanordnung zur steuerung der uebertragungsfaehigkeit des empfangszweiges einer uebertragungseinrichtung
US5022074A (en) * 1985-07-01 1991-06-04 Rockwell International Corporation Digital echo suppressor
JPH07123235B2 (ja) * 1986-08-13 1995-12-25 株式会社日立製作所 エコ−サプレツサ
JPS63126861U (it) * 1987-02-12 1988-08-18

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1181123A (en) * 1966-05-05 1970-02-11 Sits Soc It Telecom Siemens Improvements in and relating to Telephone Signal Transmission System
US3562448A (en) * 1968-06-21 1971-02-09 Bell Telephone Labor Inc Common control digital echo suppression
US3560669A (en) * 1969-02-25 1971-02-02 Wescom Echo suppressor

Also Published As

Publication number Publication date
GB1371815A (en) 1974-10-30
DE2200771C2 (de) 1986-01-30
FR2121656A1 (it) 1972-08-25
NL176731B (nl) 1984-12-17
US3896273A (en) 1975-07-22
DE2200771A1 (de) 1972-07-20
JPS5726015B1 (it) 1982-06-02
CA944879A (en) 1974-04-02
AU3731571A (en) 1973-06-28
SE374988B (it) 1975-03-24
FR2121656B1 (it) 1977-01-14
NL176731C (nl) 1985-05-17
NL7200277A (it) 1972-07-11
BE777659A (fr) 1972-05-02

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