DK18989A - Transmissionssystem til telekommunikation - Google Patents

Transmissionssystem til telekommunikation

Info

Publication number: DK18989A
Authority: DK; Denmark
Prior art keywords: transmission system; telecommunication transmission; telecommunication; transmission
Prior art date: 1988-01-18

Application number

DK018989A

Other languages

English (en)

Other versions

DK18989D0 (da

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.)

1988-01-18

Filing date

1989-01-17

Publication date

1989-07-19

1989-01-17 Application filed by Sostel Oy filed Critical Sostel Oy

1989-01-17 Publication of DK18989D0 publication Critical patent/DK18989D0/da

1989-07-19 Publication of DK18989A publication Critical patent/DK18989A/da

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)

DK018989A 1988-01-18 1989-01-17 Transmissionssystem til telekommunikation DK18989A (da)

Applications Claiming Priority (1)

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

Publications (2)

Publication Number	Publication Date
DK18989D0 DK18989D0 (da)	1989-01-17
DK18989A true DK18989A (da)	1989-07-19

Family

ID=8525733

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
DK018989A DK18989A (da)	1988-01-18	1989-01-17	Transmissionssystem til telekommunikation

Country Status (6)

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

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
US10301912B2 (en) *	2008-08-20	2019-05-28	Foro Energy, Inc.	High power laser flow assurance systems, tools and methods
US9244235B2 (en)	2008-10-17	2016-01-26	Foro Energy, Inc.	Systems and assemblies for transferring high power laser energy through a rotating junction
US9080425B2 (en)	2008-10-17	2015-07-14	Foro Energy, Inc.	High power laser photo-conversion assemblies, apparatuses 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
US9669492B2 (en)	2008-08-20	2017-06-06	Foro Energy, Inc.	High power laser offshore decommissioning tool, system and methods of use
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
US8571368B2 (en)	2010-07-21	2013-10-29	Foro Energy, Inc.	Optical fiber configurations for transmission of laser energy over great distances
US9138786B2 (en)	2008-10-17	2015-09-22	Foro Energy, Inc.	High power laser pipeline tool and methods of use
US9664012B2 (en)	2008-08-20	2017-05-30	Foro Energy, Inc.	High power laser decomissioning of multistring and damaged wells
US8636085B2 (en)	2008-08-20	2014-01-28	Foro Energy, Inc.	Methods and apparatus for removal and control of material in laser drilling of a borehole
US9242309B2 (en)	2012-03-01	2016-01-26	Foro Energy Inc.	Total internal reflection laser tools and methods
US9719302B2 (en)	2008-08-20	2017-08-01	Foro Energy, Inc.	High power laser perforating and laser fracturing tools and methods of use
US8627901B1 (en)	2009-10-01	2014-01-14	Foro Energy, Inc.	Laser bottom hole assembly
US9089928B2 (en)	2008-08-20	2015-07-28	Foro Energy, Inc.	Laser systems and methods for the removal of structures
US9347271B2 (en) *	2008-10-17	2016-05-24	Foro Energy, Inc.	Optical fiber cable for transmission of high power laser energy over great distances
US9360631B2 (en)	2008-08-20	2016-06-07	Foro Energy, Inc.	Optics assembly for high power laser tools
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
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
WO2012024285A1 (en)	2010-08-17	2012-02-23	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
BR112013021478A2 (pt)	2011-02-24	2016-10-11	Foro Energy Inc	método de perfuração de laser-mecânica de alta potência
EP2715887A4 (en)	2011-06-03	2016-11-23	Foro Energy Inc	PASSIVELY COOLED HIGH ENERGY LASER FIBER ROBUST OPTICAL CONNECTORS AND METHODS OF USE
US9340405B2 (en)	2012-01-26	2016-05-17	Progressive International Electronics Inc.	Fuel transaction tracking system
WO2014036430A2 (en)	2012-09-01	2014-03-06	Foro Energy, Inc.	Reduced mechanical energy well control systems and methods of use
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 (da) *	1970-08-06	1972-04-07	Barok Albert
NO134477C (da) *	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
US4731798A (en) *	1982-12-07	1988-03-15	Josef Dirr	Method for transmitting information, in which the signals are coded as amplitudes of the half-waves or periods of a sinusoidal alternating current
US4595803A (en) *	1984-02-02	1986-06-17	The United States Of America As Represented By The United States Department Of Energy	Bidirectional amplifier

1988
- 1988-01-18 FI FI880189A patent/FI78373C/fi not_active IP Right Cessation
- 1988-12-24 EP EP19880121664 patent/EP0324975A3/en not_active Withdrawn
1989
- 1989-01-06 US US07/294,390 patent/US4989236A/en not_active Expired - Fee Related
- 1989-01-12 NO NO890132A patent/NO172828C/no unknown
- 1989-01-17 DK DK018989A patent/DK18989A/da not_active Application Discontinuation
- 1989-01-18 JP JP1010941A patent/JPH01245662A/ja active Pending

Also Published As

Publication number	Publication date
EP0324975A3 (en)	1990-11-28
US4989236A (en)	1991-01-29
NO172828C (no)	1993-09-08
FI78373C (fi)	1989-07-10
NO172828B (no)	1993-06-01
FI78373B (fi)	1989-03-31
EP0324975A2 (en)	1989-07-26
FI880189A0 (fi)	1988-01-18
JPH01245662A (ja)	1989-09-29
NO890132D0 (no)	1989-01-12
DK18989D0 (da)	1989-01-17
NO890132L (no)	1989-07-19

Publication	Publication Date	Title
DK18989A (da)	1989-07-19	Transmissionssystem til telekommunikation
DE68926995D1 (de)	1996-09-26	Kommunikationssystem
DK370389A (da)	1990-01-29	Kommunikationssystem
DK87991A (da)	1991-05-10	Kommunikationssystem
FI904771A7 (fi)	1990-09-27	Teleliikennejärjestelmä
DK339889A (da)	1990-01-12	Kommunikationskabel
DE69030851D1 (de)	1997-07-10	Kommunikationssystem
DE68917592D1 (de)	1994-09-22	Fernmeldevermittlungssystem.
DE3853005D1 (de)	1995-03-23	Übertragungssystem.
DK198889A (da)	1989-10-29	Kommunikationssystem
DK386989D0 (da)	1989-08-08	Kommunikationssystem
DE3855567D1 (de)	1996-10-31	Übertragungssystem
DE59010736D1 (de)	1997-08-21	Übertragungssystem
FI892942A7 (fi)	1989-12-16	Tietoliikennejärjestelmä
DK402389D0 (da)	1989-08-16	Sikringsarrangement til telekommunikationstransmission
DE69030033D1 (de)	1997-04-10	Verbessertes Kommunikationssystem
NO173080C (no)	1993-10-20	Kommunikasjonssystem
DE68918912D1 (de)	1994-11-24	Automatisches Fernmeldesystem.
FI894442A7 (fi)	1990-03-21	Voimansiirtojohdon tiedonvälitysjärjestelmä
DE68927040D1 (de)	1996-10-02	Optisches Übertragungssystem
NO893402L (no)	1990-03-07	Kommunikasjonskabel.
NO911831D0 (no)	1991-05-10	Kommunikasjonssystem.
FI98425B (fi)	1997-02-28	Tietoliikennejärjestelmä
NO904195D0 (no)	1990-09-26	Telekommunikasjonssystem.
NO904193D0 (no)	1990-09-26	Telekommunikasjonssystem.

Legal Events

Date	Code	Title	Description
1994-05-30	AHS	Application shelved for other reasons than non-payment