HK121096A - Control of optical systems - Google Patents

Control of optical systems

Info

Publication number
HK121096A
HK121096A HK121096A HK121096A HK121096A HK 121096 A HK121096 A HK 121096A HK 121096 A HK121096 A HK 121096A HK 121096 A HK121096 A HK 121096A HK 121096 A HK121096 A HK 121096A
Authority
HK
Hong Kong
Prior art keywords
value
outstation
parameter
pct
signal
Prior art date
Application number
HK121096A
Other languages
English (en)
Inventor
David Wynford Faulkner
Dianne Margaret Russ
David Ian Fordham
Alistair Paul Hutcheon
Original Assignee
British Telecomm
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
Priority claimed from GB878710736A external-priority patent/GB8710736D0/en
Priority claimed from GB878727259A external-priority patent/GB8727259D0/en
Application filed by British Telecomm filed Critical British Telecomm
Publication of HK121096A publication Critical patent/HK121096A/xx

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J14/00—Optical multiplex systems
    • H04J14/08—Time-division multiplex systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/50—Transmitters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/02—Details
    • H04J3/06—Synchronising arrangements
    • H04J3/0635—Clock or time synchronisation in a network
    • H04J3/0682—Clock or time synchronisation in a network by delay compensation, e.g. by compensation of propagation delay or variations thereof, by ranging
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J14/00—Optical multiplex systems
    • H04J14/02—Wavelength-division multiplex systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Optical Communication System (AREA)
  • Semiconductor Lasers (AREA)
  • Gyroscopes (AREA)
  • Control Of Transmission Device (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)
HK121096A 1987-05-06 1996-07-11 Control of optical systems HK121096A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB878710736A GB8710736D0 (en) 1987-05-06 1987-05-06 Control of optical systems
GB878727259A GB8727259D0 (en) 1987-11-20 1987-11-20 Control of optical systems

Publications (1)

Publication Number Publication Date
HK121096A true HK121096A (en) 1996-07-19

Family

ID=26292213

Family Applications (1)

Application Number Title Priority Date Filing Date
HK121096A HK121096A (en) 1987-05-06 1996-07-11 Control of optical systems

Country Status (10)

Country Link
US (1) US5153764A (xx)
EP (1) EP0314724B1 (xx)
JP (1) JP2778967B2 (xx)
AT (1) ATE78643T1 (xx)
AU (1) AU610596B2 (xx)
CA (1) CA1315340C (xx)
DE (1) DE3873021T2 (xx)
GB (1) GB2213671B (xx)
HK (1) HK121096A (xx)
WO (1) WO1988009093A1 (xx)

Families Citing this family (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2219165B (en) * 1988-05-27 1992-10-21 Stc Plc Optical transmission systems
GB2228846B (en) * 1989-03-01 1993-08-18 Stc Plc Fibre optic transmission system
DE3907497A1 (de) * 1989-03-08 1990-09-13 Standard Elektrik Lorenz Ag Optisches nachrichtenuebertragungssystem fuer den teilnehmeranschlussbereich
GB8923351D0 (en) * 1989-10-17 1989-12-06 Stc Plc Multifrequency optical network
DE69024742T2 (de) * 1989-10-17 1996-05-23 Northern Telecom Ltd Synchrones Netzwerk
AT392555B (de) * 1989-10-24 1991-04-25 Alcatel Austria Ag Verfahren zum uebertragen von binaerinformationen in einem optischen uebertragungsnetzwerk sowie optisches uebertragungsnetzwerk
GB8926548D0 (en) * 1989-11-24 1990-01-17 British Telecomm Passive optical network
US5036189A (en) * 1990-04-03 1991-07-30 Raynet Corporation Thermal control for laser diode used in outside plant communications terminal
LU87840A1 (fr) * 1990-05-04 1991-05-07 Siemens Ag Passives optisches telekommunikationssystem
FR2664112B1 (fr) * 1990-06-29 1993-05-28 Abiven Jacques Procede de reglage de niveau d'emission de terminaux dans un reseau de transmission a l'alternat.
WO1992010036A1 (en) * 1990-11-22 1992-06-11 British Telecommunications Public Limited Company Test apparatus
GB9026932D0 (en) * 1990-12-12 1991-01-30 Plessey Telecomm Tdma ranging
AT398661B (de) * 1992-07-21 1995-01-25 Alcatel Austria Ag Empfänger für ein optisches übertragungsnetzwerk
US5815295A (en) * 1993-03-11 1998-09-29 Lucent Technologies Inc. Optical communication system with improved maintenance capabilities
EP0624011B1 (en) * 1993-04-27 1999-02-17 Alcatel Dispersion compensation device
US5471461A (en) * 1993-04-28 1995-11-28 Allen-Bradley Company, Inc. Digital communication network with a moderator station election process
US5519830A (en) * 1993-06-10 1996-05-21 Adc Telecommunications, Inc. Point-to-multipoint performance monitoring and failure isolation system
US5408462A (en) * 1993-10-07 1995-04-18 Adc Telecommunications, Inc. Protection switching apparatus and method
US5453737A (en) * 1993-10-08 1995-09-26 Adc Telecommunications, Inc. Control and communications apparatus
GB2290680B (en) * 1994-06-22 1998-11-18 Northern Telecom Ltd Telecommunications system
US5548581A (en) * 1994-08-17 1996-08-20 Bellsouth Corporation System and method for making connection acceptance/rejection decisions in a communication system
US6334219B1 (en) 1994-09-26 2001-12-25 Adc Telecommunications Inc. Channel selection for a hybrid fiber coax network
DE4434730C2 (de) * 1994-09-28 1999-12-09 Siemens Ag Telekommunikationsnetz
USRE42236E1 (en) 1995-02-06 2011-03-22 Adc Telecommunications, Inc. Multiuse subcarriers in multipoint-to-point communication using orthogonal frequency division multiplexing
US7280564B1 (en) 1995-02-06 2007-10-09 Adc Telecommunications, Inc. Synchronization techniques in multipoint-to-point communication using orthgonal frequency division multiplexing
BR9608548A (pt) * 1995-06-05 1999-07-06 Omnipoint Corp Controle de ajuste de sincronização para comunicação duplex por divisão de tempo eficiente
CA2224605C (en) * 1995-06-27 2002-10-22 British Telecommunications Public Limited Company Synchronisation in digital communications networks
JP3489087B2 (ja) * 1995-07-06 2004-01-19 富士通株式会社 光バースト伝送における反射認識方法および装置
JP3132638B2 (ja) * 1995-08-08 2001-02-05 日本電気株式会社 光波長多重伝送方式
US6834065B2 (en) * 2002-05-21 2004-12-21 Carrier Access Corporation Methods and apparatuses for direct digital drive of a laser in a passive optical network
DE10236046B4 (de) * 2002-08-06 2011-02-03 Lastmile Ag Verfahren und Vorrichtung zum Übertragen von Information über eine optische Datenübertragungsleitung
EP1670279A1 (en) * 2004-12-13 2006-06-14 Alcatel Line-rate configuration method
US8965204B2 (en) 2011-05-10 2015-02-24 Invensys Systems, Inc. Multi-drop optical communication

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2068850A5 (xx) * 1969-10-03 1971-09-03 Cit Alcatel
US4317232A (en) * 1979-01-12 1982-02-23 Deere & Company Fiber optic signal conditioning circuit
DE3013533A1 (de) * 1980-04-08 1981-10-15 Siemens Ag Schaltungsanordnung mit einer laserdiode zur uebertragung von nachrichtensiglnalen ueber einen lichtwellenleiter
US4512033A (en) * 1982-11-29 1985-04-16 C-Cor Labs, Inc. Remote level adjustment system for use in a multi-terminal communications system
GB2132452B (en) * 1982-12-08 1986-10-08 Racel Ses Limited Radio systems
DE3314869A1 (de) * 1983-04-25 1984-10-25 Siemens AG, 1000 Berlin und 8000 München Verfahren und einrichtung zur ueberwachung von optoelektronischen uebertragungsstrecken fuer seriell ausgesendete digitale signale
CA1203765A (en) * 1983-05-11 1986-04-29 Alexander M. Sills Schwanniomyces castellii strains and brewing process
CA1227844A (en) * 1983-09-07 1987-10-06 Michael T.H. Hewitt Communications network having a single node and a plurality of outstations
EP0162994A1 (de) * 1984-05-30 1985-12-04 Heinrich-Hertz-Institut für Nachrichtentechnik Berlin GmbH Kommunikationsnetz und dessen Verwendung
JPS60253336A (ja) * 1984-05-30 1985-12-14 Fujitsu Ltd 光デ−タハイウエイ制御方式
JPS6124338A (ja) * 1984-07-12 1986-02-03 Nec Corp 多方向多重通信方式
FR2568431A1 (fr) 1984-07-27 1986-01-31 Inf Milit Spatiale Aeronaut Dispositif de controle du fonctionnement d'une liaison a fibre optique et recepteur comportant un tel dispositif

Also Published As

Publication number Publication date
AU1708788A (en) 1988-12-06
GB8900204D0 (en) 1989-05-04
JP2778967B2 (ja) 1998-07-23
DE3873021T2 (de) 1992-12-03
DE3873021D1 (de) 1992-08-27
US5153764A (en) 1992-10-06
AU610596B2 (en) 1991-05-23
EP0314724B1 (en) 1992-07-22
GB2213671A (en) 1989-08-16
CA1315340C (en) 1993-03-30
EP0314724A1 (en) 1989-05-10
ATE78643T1 (de) 1992-08-15
JPH01503586A (ja) 1989-11-30
GB2213671B (en) 1991-06-26
WO1988009093A1 (en) 1988-11-17

Similar Documents

Publication Publication Date Title
GB2213671B (en) Control of optical systems
EP0586230A3 (en) Supervised personnel monitoring system
FR2661023B1 (fr) Systeme de telesurveillance de locaux inoccupes.
EP0510822A3 (en) Distributed network monitoring system for monitoring node and link status
AU5185690A (en) Supervised, interactive alarm reporting system
GB2297183B (en) Cluster alarm monitoring system
CA2119878A1 (en) Apparatus to determine the operational effectiveness of a machine tool and method therefor
CA2123220A1 (en) Optical processing system
DE762655T1 (de) Hauptsignalverarbeitungskommunikationssystem unter Kompensation von Fehlausführung der Signalwartungsprozeduren
SE8604605D0 (sv) Anordning for intrangsdetektering
EP0292151A3 (en) Reference signal generation apparatus for position detector
FR2689280B1 (fr) Circuit de mise en silence d'alarme pour detecteur photoelectrique de fumee.
AU7206387A (en) Single-wire loop alarm system
NO920079L (no) Fremgangsmaate for overvaakning av utstyr, samt anordning for aa iverksette fremgangsmaaten
CA2092649A1 (en) Human body detection system
EP0085558A3 (en) Supervision of automatic switching systems
EP0319998A3 (en) System for carrying out connection management control of ring network
CA2003617A1 (en) Transmission line monitoring system
FR2618900B1 (fr) Systeme detecteur d'impulsions lumineuses a taux de fausse alarme tres reduit, utilisable pour la detection laser
FR2645304B1 (fr) Systeme de surveillance d'installations industrielles
EP0232200A3 (en) Rate of change of pressure temperature protection system for a turbine
EP0240456A3 (en) Perimeter surveillance system
FR2634928B1 (fr) Installation de surveillance pour la prevention des sinistres, notamment la prevention des incendies
EP0415662A3 (en) An arrangement for supervising the condition of a safety light system
AU8180182A (en) Security alarm system

Legal Events

Date Code Title Description
PC Patent ceased (i.e. patent has lapsed due to the failure to pay the renewal fee)