ZA784095B - Improvements in or relating to circuit arrangements for converting analogue signals to digital signals and vice versa for conference-connections in telecommunications systems - Google Patents

Improvements in or relating to circuit arrangements for converting analogue signals to digital signals and vice versa for conference-connections in telecommunications systems

Info

Publication number
ZA784095B
ZA784095B ZA00784095A ZA784095A ZA784095B ZA 784095 B ZA784095 B ZA 784095B ZA 00784095 A ZA00784095 A ZA 00784095A ZA 784095 A ZA784095 A ZA 784095A ZA 784095 B ZA784095 B ZA 784095B
Authority
ZA
South Africa
Prior art keywords
conference
relating
connections
vice versa
signals
Prior art date
Application number
ZA00784095A
Other languages
English (en)
Inventor
P Hirschmann
E Hoefer
Original Assignee
Siemens Ag
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 Ag filed Critical Siemens Ag
Publication of ZA784095B publication Critical patent/ZA784095B/xx

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/04—Selecting arrangements for multiplex systems for time-division multiplexing
    • 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
    • H04M3/561—Arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities by multiplexing

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Telephonic Communication Services (AREA)
  • Analogue/Digital Conversion (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Interface Circuits In Exchanges (AREA)
ZA00784095A 1977-07-22 1978-07-18 Improvements in or relating to circuit arrangements for converting analogue signals to digital signals and vice versa for conference-connections in telecommunications systems ZA784095B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2733227A DE2733227C2 (de) 1977-07-22 1977-07-22 Anordnung zur Umsetzung von Analog-Signalen in Digital-Signale und umgekehrt von Digital-Signalen in Analog-Signale

Publications (1)

Publication Number Publication Date
ZA784095B true ZA784095B (en) 1979-07-25

Family

ID=6014637

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA00784095A ZA784095B (en) 1977-07-22 1978-07-18 Improvements in or relating to circuit arrangements for converting analogue signals to digital signals and vice versa for conference-connections in telecommunications systems

Country Status (11)

Country Link
US (1) US4162376A (xx)
JP (1) JPS5917568B2 (xx)
AT (1) AT374991B (xx)
BE (1) BE869179R (xx)
CH (1) CH632366A5 (xx)
DE (1) DE2733227C2 (xx)
GB (1) GB2004713B (xx)
IT (1) IT1108978B (xx)
NL (1) NL7807122A (xx)
SE (1) SE426126B (xx)
ZA (1) ZA784095B (xx)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4325139A (en) * 1980-08-28 1982-04-13 Bell Telephone Laboratories, Incorporated Circuit for combining delta modulated signals
US4479212A (en) * 1982-03-12 1984-10-23 At&T Bell Laboratories Conference circuit
GB2134751B (en) * 1983-01-18 1986-07-30 Plessey Co Plc Conference bridge
GB2183965A (en) * 1985-12-10 1987-06-10 Weng Pu San Circuit structure of teleconference
US5231629A (en) * 1990-10-01 1993-07-27 Motorola, Inc. Full-duplex communication system
US5929796A (en) * 1997-04-29 1999-07-27 National Semiconductor Corporation Self-calibrating reversible pipeline analog to digital and digital to analog converter
US8073395B2 (en) * 2006-03-07 2011-12-06 Samsung Electronics Co., Ltd. Channel sensing based on self-signal suppression

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3540037A (en) * 1967-07-20 1970-11-10 Ibm Time shared bipolar analog-to-digital and digital - to - analog conversion apparatus
US3551600A (en) * 1968-02-23 1970-12-29 Stromberg Carlson Corp High capacity,high side-tone suppression,4-wire conference circuit
US3889063A (en) * 1971-08-19 1975-06-10 Phonplex Corp Multiplexed digital data communication system
US3828146A (en) * 1973-03-22 1974-08-06 Bell Telephone Labor Inc Time division conference hybrid circuit
DE2445092B1 (de) * 1974-09-20 1976-01-22 Siemens Ag Verfahren zum verbinden wenigstens dreier teilnehmer einer zeitmultiplex- fernmelde-, insbesondere pcm-fernsprechvermittlungsanlage
US3971891A (en) * 1975-03-14 1976-07-27 Martin Marietta Corporation Adaptable time division switch
DE2534109B2 (de) * 1975-07-30 1979-03-15 Siemens Ag, 1000 Berlin Und 8000 Muenchen Verfahren und Schaltungsanordnung zur Umsetzung von Analog-Signalen in Dighal-Signale und von Digital-Signalen in Analog-Signale

Also Published As

Publication number Publication date
SE426126B (sv) 1982-12-06
NL7807122A (nl) 1979-01-24
AT374991B (de) 1984-06-25
SE7808051L (sv) 1979-03-20
DE2733227C2 (de) 1986-12-04
JPS5423368A (en) 1979-02-21
CH632366A5 (de) 1982-09-30
IT1108978B (it) 1985-12-16
GB2004713B (en) 1982-05-12
ATA461278A (de) 1983-10-15
GB2004713A (en) 1979-04-04
US4162376A (en) 1979-07-24
JPS5917568B2 (ja) 1984-04-21
BE869179R (fr) 1979-01-22
DE2733227A1 (de) 1979-02-01
IT7825757A0 (it) 1978-07-17

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