CA1027266A - Systeme telephonique multiplex par repartition de frequences - Google Patents

Systeme telephonique multiplex par repartition de frequences

Info

Publication number
CA1027266A
CA1027266A CA203,325A CA203325A CA1027266A CA 1027266 A CA1027266 A CA 1027266A CA 203325 A CA203325 A CA 203325A CA 1027266 A CA1027266 A CA 1027266A
Authority
CA
Canada
Prior art keywords
frequency division
telephone system
division multiplex
multiplex telephone
frequency
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
CA203,325A
Other languages
English (en)
Inventor
Vincent R. Delong
John L. Leeson
Edwin G. Houghton
Merrill T. Ludvigson
Frank M. Apple
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.)
Boeing North American Inc
Original Assignee
Rockwell International 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 Rockwell International Corp filed Critical Rockwell International Corp
Application granted granted Critical
Publication of CA1027266A publication Critical patent/CA1027266A/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M9/00—Arrangements for interconnection not involving centralised switching
    • H04M9/02—Arrangements for interconnection not involving centralised switching involving a common line for all parties
    • H04M9/022—Multiplex systems
    • H04M9/027—Frequency division multiplex systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/02—Selecting arrangements for multiplex systems for frequency-division multiplexing

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Telephonic Communication Services (AREA)
  • Time-Division Multiplex Systems (AREA)
  • Radio Relay Systems (AREA)
CA203,325A 1973-10-25 1974-06-25 Systeme telephonique multiplex par repartition de frequences Expired CA1027266A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US409527A US3864521A (en) 1973-10-25 1973-10-25 Frequency division multiplex telephone system

Publications (1)

Publication Number Publication Date
CA1027266A true CA1027266A (fr) 1978-02-28

Family

ID=23620886

Family Applications (1)

Application Number Title Priority Date Filing Date
CA203,325A Expired CA1027266A (fr) 1973-10-25 1974-06-25 Systeme telephonique multiplex par repartition de frequences

Country Status (3)

Country Link
US (1) US3864521A (fr)
CA (1) CA1027266A (fr)
GB (1) GB1476345A (fr)

Families Citing this family (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4020289A (en) * 1972-05-15 1977-04-26 Teleplex, Inc. Random access, multiple station communication system
US4013840A (en) * 1972-05-15 1977-03-22 Teleplex, Inc. Tdm and fdm telephone communication
US4057804A (en) * 1973-06-21 1977-11-08 Holme Communications Systems, Inc. Branched path communications apparatus for routing communications signals
FR2307411A1 (fr) * 1975-04-11 1976-11-05 Thomson Csf Poste telephonique a generateur de porteurs programmable et systeme telephonique utilisant un tel poste
DE2659664C2 (de) * 1976-12-30 1979-04-05 Siemens Ag, 1000 Berlin Und 8000 Muenchen Nachrichtenübertragungsanordnung zur Verbindung mehrerer Teilnehmer mit einer zentralen Vermittlungsstelle
US4107471A (en) * 1977-03-22 1978-08-15 International Telephone & Telegraph Corp. Frequency division multiplex communications system
FR2425777A1 (fr) * 1978-05-12 1979-12-07 Dassault Electronique Procede et appareil radio-electriques pour la collecte et le traitement d'informations provenant d'une multiplicite de postes
US4262171A (en) * 1979-01-08 1981-04-14 Catalyst Research Corporation Telephone system in which communication between stations is controlled by computers at each individual station
US4347607A (en) * 1980-05-09 1982-08-31 Harris Corporation Voice alarm signalling system
US4339816A (en) * 1980-05-29 1982-07-13 International Telephone And Telegraph Corporation Conferencing apparatus and methods for a frequency division multiplex communications system
USRE32327E (en) * 1980-07-07 1987-01-06 Sytek, Inc. Multiple channel data communication system
US4365331A (en) * 1980-07-07 1982-12-21 Sytek Corporation Multiple channel data communication system
US4530084A (en) * 1981-10-08 1985-07-16 Heinrich Hertz Institut Fuer Nachrichten Technik Communications network with optical channels
ZA827851B (en) * 1981-11-04 1984-06-27 Racal Acoustics Ltd Communication set and method
US4514594A (en) * 1982-09-30 1985-04-30 Astech, Inc. Power line carrier telephone extension system for full duplex conferencing between telephones and having telephone call hold capability
US4475193A (en) * 1982-09-30 1984-10-02 Astech, Inc. Power line carrier multi telephone extension system for full duplex conferencing between telephones
FR2548852A1 (fr) * 1983-07-08 1985-01-11 Drubay Fernand Reseau de communication de signaux video sous forme analogique
US4675866A (en) * 1984-04-24 1987-06-23 Nec Corporation Broadband network systems
US4706244A (en) * 1985-01-15 1987-11-10 Rockwell International Corporation Frequency multiplexed telephone system
FR2586874B1 (fr) * 1985-08-29 1988-08-05 Comp Generale Electricite Dispositif de telecommunication par fibres optiques.
FR2593654B1 (fr) * 1986-01-28 1988-03-11 Comp Generale Electricite Dispositif de telecommunications photoniques coherentes.
DE3617830A1 (de) * 1986-05-26 1987-12-03 Siemens Ag Schaltungsanordnung fuer ein gesellschaftsleitungssystem
US4789980A (en) * 1986-08-18 1988-12-06 American Telephone & Telegraph Company, At&T Bell Laboratories Switching techniques for FDM communication systems
US4996709A (en) * 1988-05-12 1991-02-26 Tandy Corporation Intercom telephone
US5530737A (en) * 1993-03-22 1996-06-25 Phonex Corporation Secure access telephone extension system and method
CN1076551C (zh) * 1993-04-06 2001-12-19 开创集成系统公司 用于在单条内部双绞线上操作的家庭及小公司电话系统
US5726978A (en) * 1995-06-22 1998-03-10 Telefonaktiebolaget L M Ericsson Publ. Adaptive channel allocation in a frequency division multiplexed system
US5790516A (en) * 1995-07-14 1998-08-04 Telefonaktiebolaget Lm Ericsson Pulse shaping for data transmission in an orthogonal frequency division multiplexed system
US6049549A (en) * 1997-08-14 2000-04-11 University Of Massachusetts Adaptive media control

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3045066A (en) * 1957-03-14 1962-07-17 Donald A Beuscher Selective carrier type communication system
US2927966A (en) * 1957-09-27 1960-03-08 Bell Telephone Labor Inc Carrier telephone systems with carrier-shift signaling
US3597549A (en) * 1969-07-17 1971-08-03 Bell Telephone Labor Inc High speed data communication system
US3757053A (en) * 1971-09-10 1973-09-04 Delta Communications Corp Time multiplexed sampled data telephone system
US3809815A (en) * 1972-05-04 1974-05-07 Litton Systems Inc Communication system utilizing frequency division multiplexing to link a plurality of stations each containing a switchable synthesizer
US3781478A (en) * 1972-07-07 1973-12-25 Bell Telephone Labor Inc Multiplex communication system

Also Published As

Publication number Publication date
US3864521A (en) 1975-02-04
GB1476345A (en) 1977-06-10

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