FR2303428A1 - Dispositif de telecommunications - Google Patents

Dispositif de telecommunications

Info

Publication number
FR2303428A1
FR2303428A1 FR7605914A FR7605914A FR2303428A1 FR 2303428 A1 FR2303428 A1 FR 2303428A1 FR 7605914 A FR7605914 A FR 7605914A FR 7605914 A FR7605914 A FR 7605914A FR 2303428 A1 FR2303428 A1 FR 2303428A1
Authority
FR
France
Prior art keywords
telecommunications device
telecommunications
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.)
Granted
Application number
FR7605914A
Other languages
English (en)
Other versions
FR2303428B1 (fr
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.)
Coal Industry Patents Ltd
Original Assignee
Coal Industry Patents Ltd
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 Coal Industry Patents Ltd filed Critical Coal Industry Patents Ltd
Publication of FR2303428A1 publication Critical patent/FR2303428A1/fr
Application granted granted Critical
Publication of FR2303428B1 publication Critical patent/FR2303428B1/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
    • H04B5/20—Near-field transmission systems, e.g. inductive or capacitive transmission systems characterised by the transmission technique; characterised by the transmission medium
    • H04B5/28—Near-field transmission systems, e.g. inductive or capacitive transmission systems characterised by the transmission technique; characterised by the transmission medium using the near field of leaky cables, e.g. of leaky coaxial cables

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Near-Field Transmission Systems (AREA)
  • Radio Relay Systems (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
FR7605914A 1975-03-07 1976-03-02 Dispositif de telecommunications Granted FR2303428A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9567/75A GB1497288A (en) 1975-03-07 1975-03-07 Telecommunication system

Publications (2)

Publication Number Publication Date
FR2303428A1 true FR2303428A1 (fr) 1976-10-01
FR2303428B1 FR2303428B1 (fr) 1980-04-25

Family

ID=9874482

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7605914A Granted FR2303428A1 (fr) 1975-03-07 1976-03-02 Dispositif de telecommunications

Country Status (7)

Country Link
US (1) US4012662A (fr)
BE (1) BE839076A (fr)
CA (1) CA1066777A (fr)
DE (1) DE2604907A1 (fr)
FR (1) FR2303428A1 (fr)
GB (1) GB1497288A (fr)
ZA (1) ZA76631B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2391604A1 (fr) * 1977-05-20 1978-12-15 Patelhold Patentverwertung Installation radio pour tunnels

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4066993A (en) * 1976-11-08 1978-01-03 Western Geophysical Company Of America Limited-range seismic control system
DE2729719C2 (de) * 1977-07-01 1985-11-21 kabelmetal electro GmbH, 3000 Hannover Vorrichtung zur Übertragung von Hochfrequenz-Signalen
GB8408323D0 (en) * 1984-03-30 1984-05-10 British Telecomm Cordless telephone
GB2171576B (en) * 1985-02-04 1989-07-12 Mitel Telecom Ltd Spread spectrum leaky feeder communication system
GB8915542D0 (en) * 1989-07-06 1989-08-23 Hunting Eng Ltd Communication systems
AU632891B2 (en) * 1990-01-18 1993-01-14 Andrew Corporation Distributed amplifier network management system
FR2659512B1 (fr) * 1990-03-09 1994-04-29 Cogema Installation de communication en hyperfrequences.
US5018165A (en) * 1990-03-21 1991-05-21 Andrew Corporation Communication system using spread spectrum and leaky transmission line
CA2043127C (fr) * 1991-05-23 1996-05-07 Martin Handforth Systeme de gestion de zones de communication sans fil
US5669065A (en) * 1994-09-15 1997-09-16 Mine Radio Systems Inc. Completely redundant communication system utilizing radiating transmission line
US5697067A (en) * 1994-09-15 1997-12-09 Mine Radio Systems Inc. Communication system utilizing radiating transmission line
US5924033A (en) * 1996-05-03 1999-07-13 Telefonaktiebolaget L/M Ericsson (Publ) Communication control circuitry and method for a group of commonly-moving mobile transceiver units
US6081728A (en) * 1997-02-28 2000-06-27 Andrew Corporation Strip-type radiating cable for a radio communication system
DE19732503A1 (de) 1997-07-29 1999-02-04 Alsthom Cge Alcatel Anordnung zur Übertragung, zur Abstrahlung und zum Empfang von Hochfrequenz-Signalen
JP4436388B2 (ja) * 2007-07-13 2010-03-24 東芝テック株式会社 無線通信システム
US8725188B1 (en) 2007-07-20 2014-05-13 Kutta Technologies, Inc. Enclosed space communication systems and related methods
JP4913186B2 (ja) * 2009-08-13 2012-04-11 東芝テック株式会社 無線通信システム及びその設置方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR892125A (fr) * 1942-06-06 1944-03-29 Lorenz C Ag Montage de bout de ligne de transmission à fréquence porteuse
FR2189889A1 (fr) * 1972-05-26 1974-01-25 Coal Industry Patents Ltd
DE2528983A1 (de) * 1974-08-07 1976-02-26 Coal Industry Patents Ltd Fernmeldesystem

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1206811A (en) * 1968-01-15 1970-09-30 British Railways Board Improvements relating to track communication systems for moving trains
CA853332A (en) * 1968-02-21 1970-10-06 Jauquet Christian Device for transmitting information between a fixed location and a railway vehicle
GB1240588A (en) * 1968-07-30 1971-07-28 Japan National Railway Improvements in or relating to communication control systems

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR892125A (fr) * 1942-06-06 1944-03-29 Lorenz C Ag Montage de bout de ligne de transmission à fréquence porteuse
FR2189889A1 (fr) * 1972-05-26 1974-01-25 Coal Industry Patents Ltd
DE2528983A1 (de) * 1974-08-07 1976-02-26 Coal Industry Patents Ltd Fernmeldesystem

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2391604A1 (fr) * 1977-05-20 1978-12-15 Patelhold Patentverwertung Installation radio pour tunnels

Also Published As

Publication number Publication date
FR2303428B1 (fr) 1980-04-25
DE2604907A1 (de) 1976-09-16
CA1066777A (fr) 1979-11-20
US4012662A (en) 1977-03-15
ZA76631B (en) 1977-01-26
BE839076A (fr) 1976-09-01
AU1148376A (en) 1977-09-01
GB1497288A (en) 1978-01-05

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Legal Events

Date Code Title Description
ST Notification of lapse