BE883134A - Circuit de conference a acces multiples avec sommation de plusieurs sequences et codage du niveau de modulation - Google Patents

Circuit de conference a acces multiples avec sommation de plusieurs sequences et codage du niveau de modulation

Info

Publication number
BE883134A
BE883134A BE2/58545A BE2058545A BE883134A BE 883134 A BE883134 A BE 883134A BE 2/58545 A BE2/58545 A BE 2/58545A BE 2058545 A BE2058545 A BE 2058545A BE 883134 A BE883134 A BE 883134A
Authority
BE
Belgium
Prior art keywords
modulation level
level coding
conference circuit
multiple access
access conference
Prior art date
Application number
BE2/58545A
Other languages
English (en)
Inventor
T Funderburk
D W Mclaughlin
Original Assignee
Gte Automatic Electric Lab Inc
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 Gte Automatic Electric Lab Inc filed Critical Gte Automatic Electric Lab Inc
Publication of BE883134A publication Critical patent/BE883134A/fr

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/42—Systems providing special services or facilities to subscribers
    • H04M3/56—Arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities
    • H04M3/568—Arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities audio processing specific to telephonic conferencing, e.g. spatial distribution, mixing of participants
    • H04M3/569—Arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities audio processing specific to telephonic conferencing, e.g. spatial distribution, mixing of participants using the instant speaker's algorithm

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)
  • Telephonic Communication Services (AREA)
BE2/58545A 1979-08-06 1980-05-07 Circuit de conference a acces multiples avec sommation de plusieurs sequences et codage du niveau de modulation BE883134A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/064,201 US4274155A (en) 1979-08-06 1979-08-06 Multiport conference circuit with multi-frame summing and voice level coding

Publications (1)

Publication Number Publication Date
BE883134A true BE883134A (fr) 1980-09-01

Family

ID=22054246

Family Applications (1)

Application Number Title Priority Date Filing Date
BE2/58545A BE883134A (fr) 1979-08-06 1980-05-07 Circuit de conference a acces multiples avec sommation de plusieurs sequences et codage du niveau de modulation

Country Status (4)

Country Link
US (1) US4274155A (fr)
BE (1) BE883134A (fr)
CA (1) CA1146246A (fr)
IT (1) IT1131893B (fr)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4389720A (en) * 1981-04-23 1983-06-21 Bell Telephone Laboratories, Incorporated Distributed digital conferencing system
AU579180B2 (en) * 1981-04-23 1988-11-17 At & T Technologies, Inc. Digital communication system
NL8201058A (nl) * 1982-03-15 1983-10-03 Philips Nv Werkwijze en inrichting voor het tot stand brengen van een conferentieverbinding in een tdm communicatiestelsel.
US4479211A (en) * 1982-10-29 1984-10-23 At&T Bell Laboratories Method and apparatus for controlling ports in a digital conference arrangement
US4466094A (en) * 1982-12-27 1984-08-14 Gte Automatic Electric Inc. Data capture arrangement for a conference circuit
US4466092A (en) * 1982-12-27 1984-08-14 Gte Automatic Electric Inc. Test data insertion arrangement for a conference circuit
US4466093A (en) * 1982-12-27 1984-08-14 Gte Automatic Electric Inc. Time shared conference arrangement
US4547878A (en) * 1983-06-28 1985-10-15 Rockwell International Corporation Non-linear adder
US4535445A (en) * 1983-06-16 1985-08-13 At&T Information Systems Conferencing system adaptive signal conditioner
DE3329779C2 (de) * 1983-08-18 1985-06-27 Philips Patentverwaltung Gmbh, 2000 Hamburg Verfahren und Schaltungsanordnung zur Herstellung von Konferenzverbindungen in einem Vermittlungssystem
GB2177874B (en) * 1985-07-19 1989-01-18 Stc Plc Conference circuit
CA1236906A (fr) * 1985-10-02 1988-05-17 Northern Telecom Limited Circuits de conference et methode d'utilisation
US4797877A (en) * 1986-12-18 1989-01-10 American Telephone And Telegraph Company Communication system dynamic conferencer circuit
US5471527A (en) 1993-12-02 1995-11-28 Dsc Communications Corporation Voice enhancement system and method
JPH1040197A (ja) * 1996-07-19 1998-02-13 Fujitsu Ltd 通信管理装置
US6192395B1 (en) * 1998-12-23 2001-02-20 Multitude, Inc. System and method for visually identifying speaking participants in a multi-participant networked event
WO2007084254A2 (fr) * 2005-11-29 2007-07-26 Dilithium Networks Pty Ltd. Procede et systeme de melange de voix dans le cadre d'une teleconference faisant intervenir divers reseaux

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3947639A (en) * 1974-09-30 1976-03-30 Rockwell International Corporation Selective switching apparatus
US4054755A (en) * 1976-10-14 1977-10-18 Gte Automatic Electric Laboratories Incorporated Conference circuit for pulse coded modulated telephony
US4059735A (en) * 1976-11-18 1977-11-22 Ncr Corporation Digital conference system
US4175215A (en) * 1977-12-05 1979-11-20 Gte Automatic Electric Laboratories Incorporated Multiport conference circuit

Also Published As

Publication number Publication date
CA1146246A (fr) 1983-05-10
IT8023204A0 (it) 1980-07-02
US4274155A (en) 1981-06-16
IT1131893B (it) 1986-06-25

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