FI880189A0 - Telefontrafik- eller dataoeverfoeringssystem, - Google Patents

Telefontrafik- eller dataoeverfoeringssystem,

Info

Publication number
FI880189A0
FI880189A0 FI880189A FI880189A FI880189A0 FI 880189 A0 FI880189 A0 FI 880189A0 FI 880189 A FI880189 A FI 880189A FI 880189 A FI880189 A FI 880189A FI 880189 A0 FI880189 A0 FI 880189A0
Authority
FI
Finland
Prior art keywords
telefontrafik
dataoeverfoeringssystem
eller
eller dataoeverfoeringssystem
Prior art date
Application number
FI880189A
Other languages
English (en)
Other versions
FI78373C (fi
FI78373B (fi
Inventor
Matti Myllymaeki
Original Assignee
Sostel Oy
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 Sostel Oy filed Critical Sostel Oy
Priority to FI880189A priority Critical patent/FI78373C/fi
Publication of FI880189A0 publication Critical patent/FI880189A0/fi
Priority to EP19880121664 priority patent/EP0324975A3/en
Priority to US07/294,390 priority patent/US4989236A/en
Priority to NO890132A priority patent/NO172828C/no
Priority to DK018989A priority patent/DK18989A/da
Priority to JP1010941A priority patent/JPH01245662A/ja
Application granted granted Critical
Publication of FI78373B publication Critical patent/FI78373B/fi
Publication of FI78373C publication Critical patent/FI78373C/fi

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/14—Two-way operation using the same type of signal, i.e. duplex
    • H04L5/1423—Two-way operation using the same type of signal, i.e. duplex for simultaneous baseband signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B14/00—Transmission systems not characterised by the medium used for transmission
    • H04B14/002—Transmission systems not characterised by the medium used for transmission characterised by the use of a carrier modulation
    • H04B14/004—Amplitude modulation

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)
  • Telephonic Communication Services (AREA)
  • Telephone Function (AREA)
FI880189A 1988-01-18 1988-01-18 Telefontrafik- eller dataoeverfoeringssystem. FI78373C (fi)

Priority Applications (6)

Application Number Priority Date Filing Date Title
FI880189A FI78373C (fi) 1988-01-18 1988-01-18 Telefontrafik- eller dataoeverfoeringssystem.
EP19880121664 EP0324975A3 (en) 1988-01-18 1988-12-24 Transmission system for telephone communication or data transfer
US07/294,390 US4989236A (en) 1988-01-18 1989-01-06 Transmission system for telephone communications or data transfer
NO890132A NO172828C (no) 1988-01-18 1989-01-12 Transmisjonssystem for telefonkommunikasjon eller dataoverfoering, samt telefonsett
DK018989A DK18989A (da) 1988-01-18 1989-01-17 Transmissionssystem til telekommunikation
JP1010941A JPH01245662A (ja) 1988-01-18 1989-01-18 電話通話あるいは情報伝送に関する伝達システム

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI880189 1988-01-18
FI880189A FI78373C (fi) 1988-01-18 1988-01-18 Telefontrafik- eller dataoeverfoeringssystem.

Publications (3)

Publication Number Publication Date
FI880189A0 true FI880189A0 (fi) 1988-01-18
FI78373B FI78373B (fi) 1989-03-31
FI78373C FI78373C (fi) 1989-07-10

Family

ID=8525733

Family Applications (1)

Application Number Title Priority Date Filing Date
FI880189A FI78373C (fi) 1988-01-18 1988-01-18 Telefontrafik- eller dataoeverfoeringssystem.

Country Status (6)

Country Link
US (1) US4989236A (fi)
EP (1) EP0324975A3 (fi)
JP (1) JPH01245662A (fi)
DK (1) DK18989A (fi)
FI (1) FI78373C (fi)
NO (1) NO172828C (fi)

Families Citing this family (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02280422A (ja) * 1989-04-20 1990-11-16 Nec Corp 音声会議装置用エコーキャンセラのトレーニング方法
FR2704703B1 (fr) * 1993-04-28 1995-06-30 Gemplus Card Int Appareil d'exploitation de signaux electriques.
US6389135B1 (en) * 1998-09-25 2002-05-14 Conexant Systems, Inc. Method and apparatus for deriving power from a clock signal coupled through capacitors
US6556677B1 (en) * 1999-05-27 2003-04-29 William Christopher Hardy Single-ended echo cancellation system and method
US9360631B2 (en) 2008-08-20 2016-06-07 Foro Energy, Inc. Optics assembly for high power laser tools
US9080425B2 (en) 2008-10-17 2015-07-14 Foro Energy, Inc. High power laser photo-conversion assemblies, apparatuses and methods of use
US9719302B2 (en) 2008-08-20 2017-08-01 Foro Energy, Inc. High power laser perforating and laser fracturing tools and methods of use
US9027668B2 (en) 2008-08-20 2015-05-12 Foro Energy, Inc. Control system for high power laser drilling workover and completion unit
JP2012500350A (ja) 2008-08-20 2012-01-05 フォロ エナジー インコーポレーティッド 高出力レーザーを使用してボーリング孔を前進させる方法及び設備
US9242309B2 (en) 2012-03-01 2016-01-26 Foro Energy Inc. Total internal reflection laser tools and methods
US9089928B2 (en) 2008-08-20 2015-07-28 Foro Energy, Inc. Laser systems and methods for the removal of structures
US8571368B2 (en) 2010-07-21 2013-10-29 Foro Energy, Inc. Optical fiber configurations for transmission of laser energy over great distances
US9267330B2 (en) 2008-08-20 2016-02-23 Foro Energy, Inc. Long distance high power optical laser fiber break detection and continuity monitoring systems and methods
US10301912B2 (en) * 2008-08-20 2019-05-28 Foro Energy, Inc. High power laser flow assurance systems, tools and methods
US9138786B2 (en) 2008-10-17 2015-09-22 Foro Energy, Inc. High power laser pipeline tool and methods of use
US9244235B2 (en) 2008-10-17 2016-01-26 Foro Energy, Inc. Systems and assemblies for transferring high power laser energy through a rotating junction
US8627901B1 (en) 2009-10-01 2014-01-14 Foro Energy, Inc. Laser bottom hole assembly
US9669492B2 (en) 2008-08-20 2017-06-06 Foro Energy, Inc. High power laser offshore decommissioning tool, system and methods of use
US9347271B2 (en) * 2008-10-17 2016-05-24 Foro Energy, Inc. Optical fiber cable for transmission of high power laser energy over great distances
US9664012B2 (en) 2008-08-20 2017-05-30 Foro Energy, Inc. High power laser decomissioning of multistring and damaged wells
US8720584B2 (en) 2011-02-24 2014-05-13 Foro Energy, Inc. Laser assisted system for controlling deep water drilling emergency situations
US8783360B2 (en) 2011-02-24 2014-07-22 Foro Energy, Inc. Laser assisted riser disconnect and method of use
US9845652B2 (en) 2011-02-24 2017-12-19 Foro Energy, Inc. Reduced mechanical energy well control systems and methods of use
US8783361B2 (en) 2011-02-24 2014-07-22 Foro Energy, Inc. Laser assisted blowout preventer and methods of use
US8684088B2 (en) 2011-02-24 2014-04-01 Foro Energy, Inc. Shear laser module and method of retrofitting and use
EP2606201A4 (en) 2010-08-17 2018-03-07 Foro Energy Inc. Systems and conveyance structures for high power long distance laster transmission
WO2012116155A1 (en) 2011-02-24 2012-08-30 Foro Energy, Inc. Electric motor for laser-mechanical drilling
WO2012116153A1 (en) 2011-02-24 2012-08-30 Foro Energy, Inc. High power laser-mechanical drilling bit and methods of use
US9360643B2 (en) 2011-06-03 2016-06-07 Foro Energy, Inc. Rugged passively cooled high power laser fiber optic connectors and methods of use
US9340405B2 (en) 2012-01-26 2016-05-17 Progressive International Electronics Inc. Fuel transaction tracking system
US10221687B2 (en) 2015-11-26 2019-03-05 Merger Mines Corporation Method of mining using a laser

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR833596A (fr) * 1937-06-24 1938-10-25 Systèmes de multiplication des communications télégraphiques ou téléphoniques
US2980769A (en) * 1957-05-06 1961-04-18 Westinghouse Electric Corp Bidirectional multiplex transistor communication apparatus
FR2102614A5 (fi) * 1970-08-06 1972-04-07 Barok Albert
NO134477C (fi) * 1974-10-29 1976-10-13 Manus Max
DE2644364C3 (de) * 1976-10-01 1981-07-16 Telefonbau Und Normalzeit Gmbh, 6000 Frankfurt Duplexfähiges Informationsübertragungsverfahren zwischen zwei über einen aus einem Verbindungsweg und einem Rückweg bestehenden Stromkreis miteinander verbundenen Datenstationen
US4326287A (en) * 1980-06-30 1982-04-20 International Business Machines Corp. Two wire bi-directional digital telephone link
EP0110427B1 (de) * 1982-12-07 1990-03-28 Josef Dirr Verfahren für die Übertragung von Nachrichten, bei dem die Codierung der Signale durch die Grösse der Amplituden der Halbwellen oder Perioden eines sinusförmigen Wechselstromes erfolgt
US4595803A (en) * 1984-02-02 1986-06-17 The United States Of America As Represented By The United States Department Of Energy Bidirectional amplifier

Also Published As

Publication number Publication date
DK18989A (da) 1989-07-19
NO890132D0 (no) 1989-01-12
FI78373C (fi) 1989-07-10
NO172828B (no) 1993-06-01
NO172828C (no) 1993-09-08
JPH01245662A (ja) 1989-09-29
FI78373B (fi) 1989-03-31
US4989236A (en) 1991-01-29
EP0324975A3 (en) 1990-11-28
NO890132L (no) 1989-07-19
EP0324975A2 (en) 1989-07-26
DK18989D0 (da) 1989-01-17

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Legal Events

Date Code Title Description
MM Patent lapsed

Owner name: SOSTEL OY