SE451287B - Konferenssystem for att uppretta en samtidig utvexling av information mellan ett flertal abonnenter innefattande en konferenskrets for informationssignaler i konferensen - Google Patents

Konferenssystem for att uppretta en samtidig utvexling av information mellan ett flertal abonnenter innefattande en konferenskrets for informationssignaler i konferensen

Info

Publication number
SE451287B
SE451287B SE8107089A SE8107089A SE451287B SE 451287 B SE451287 B SE 451287B SE 8107089 A SE8107089 A SE 8107089A SE 8107089 A SE8107089 A SE 8107089A SE 451287 B SE451287 B SE 451287B
Authority
SE
Sweden
Prior art keywords
conference
circuit
information
connection
information signals
Prior art date
Application number
SE8107089A
Other languages
English (en)
Swedish (sv)
Other versions
SE8107089L (sv
Inventor
Den Enden A W M Van
Mil J F P Van
A J Nijman
Original Assignee
Philips Nv
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 Philips Nv filed Critical Philips Nv
Publication of SE8107089L publication Critical patent/SE8107089L/
Publication of SE451287B publication Critical patent/SE451287B/sv

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

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)
  • Telephonic Communication Services (AREA)
SE8107089A 1980-12-01 1981-11-27 Konferenssystem for att uppretta en samtidig utvexling av information mellan ett flertal abonnenter innefattande en konferenskrets for informationssignaler i konferensen SE451287B (sv)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL8006518A NL8006518A (nl) 1980-12-01 1980-12-01 Conferentiestelsel voor telefonie.

Publications (2)

Publication Number Publication Date
SE8107089L SE8107089L (sv) 1982-06-02
SE451287B true SE451287B (sv) 1987-09-21

Family

ID=19836263

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8107089A SE451287B (sv) 1980-12-01 1981-11-27 Konferenssystem for att uppretta en samtidig utvexling av information mellan ett flertal abonnenter innefattande en konferenskrets for informationssignaler i konferensen

Country Status (9)

Country Link
US (1) US4477696A (pm)
JP (1) JPS57119548A (pm)
BE (1) BE891296A (pm)
CA (1) CA1188779A (pm)
DE (1) DE3146363A1 (pm)
FR (1) FR2495415A1 (pm)
GB (1) GB2088674B (pm)
NL (1) NL8006518A (pm)
SE (1) SE451287B (pm)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5913072A (ja) * 1982-07-09 1984-01-23 Tokuda Seisakusho Ltd スパツタリング装置
DE19524425A1 (de) * 1995-07-05 1997-01-09 Deutsche Telekom Ag Verfahren zur Raum-Echokompensation für Endgeräte mit Freisprechmöglichkeit in digitalen Netzen
CN1058003C (zh) * 1996-11-08 2000-11-01 清华大学 4-甲基咪唑的合成工艺

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL146543A (pm) *
CH408129A (de) * 1963-11-17 1966-02-28 Standard Telephon & Radio Ag Konferenzschaltung für Telephon- Teilnehmer
CH489161A (de) * 1963-11-17 1970-04-15 Standard Telephon & Radio Ag Konferenzschaltung für Telephon-Teilnehmer
US3882276A (en) * 1974-03-22 1975-05-06 Bell Telephone Labor Inc Conferencing system utilizing oppositely phased hybrids
US4049920A (en) * 1976-10-18 1977-09-20 Bell Telephone Laboratories, Incorporated Analog signal summing conference circuit
JPS5829032B2 (ja) * 1978-12-29 1983-06-20 富士通株式会社 会議通話における鳴音防止方式
NL8006519A (nl) * 1980-12-01 1982-07-01 Philips Nv Conferentiestelsel voor telefonie.

Also Published As

Publication number Publication date
BE891296A (fr) 1982-06-01
JPS57119548A (en) 1982-07-26
DE3146363A1 (de) 1982-09-16
SE8107089L (sv) 1982-06-02
CA1188779A (en) 1985-06-11
GB2088674B (en) 1984-07-18
FR2495415A1 (fr) 1982-06-04
GB2088674A (en) 1982-06-09
FR2495415B1 (pm) 1984-12-14
NL8006518A (nl) 1982-07-01
US4477696A (en) 1984-10-16
DE3146363C2 (pm) 1990-05-31
JPH0241946B2 (pm) 1990-09-20

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