FI883369A - Optinen telekommunikaatiojärjestelmä - Google Patents

Optinen telekommunikaatiojärjestelmä Download PDF

Info

Publication number
FI883369A
FI883369A FI883369A FI883369A FI883369A FI 883369 A FI883369 A FI 883369A FI 883369 A FI883369 A FI 883369A FI 883369 A FI883369 A FI 883369A FI 883369 A FI883369 A FI 883369A
Authority
FI
Finland
Prior art keywords
junction
error signal
combined
telecommunication system
phase errors
Prior art date
Application number
FI883369A
Other languages
English (en)
Swedish (sv)
Other versions
FI92447B (fi
FI92447C (fi
FI883369A0 (fi
Inventor
Andrew Lord
Lutz C Blank
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
Application filed by British Telecomm filed Critical British Telecomm
Publication of FI883369A0 publication Critical patent/FI883369A0/fi
Publication of FI883369A publication Critical patent/FI883369A/fi
Publication of FI92447B publication Critical patent/FI92447B/fi
Application granted granted Critical
Publication of FI92447C publication Critical patent/FI92447C/fi

Links

Classifications

    • 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
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L7/00—Arrangements for synchronising receiver with transmitter
    • H04L7/02—Speed or phase control by the received code signals, the signals containing no special synchronisation information
    • H04L7/027—Speed or phase control by the received code signals, the signals containing no special synchronisation information extracting the synchronising or clock signal from the received signal spectrum, e.g. by using a resonant or bandpass circuit

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Optical Communication System (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Small-Scale Networks (AREA)
  • Dc Digital Transmission (AREA)
  • Time-Division Multiplex Systems (AREA)
FI883369A 1987-07-16 1988-07-15 Optinen telekommunikaatiojärjestelmä FI92447C (fi)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8716749 1987-07-16
GB878716749A GB8716749D0 (en) 1987-07-16 1987-07-16 Bit synchronisation for optical networks

Publications (4)

Publication Number Publication Date
FI883369A0 FI883369A0 (fi) 1988-07-15
FI883369A true FI883369A (fi) 1989-01-17
FI92447B FI92447B (fi) 1994-07-29
FI92447C FI92447C (fi) 1994-11-10

Family

ID=10620744

Family Applications (1)

Application Number Title Priority Date Filing Date
FI883369A FI92447C (fi) 1987-07-16 1988-07-15 Optinen telekommunikaatiojärjestelmä

Country Status (11)

Country Link
US (1) US4982446A (fi)
EP (1) EP0300649B1 (fi)
JP (1) JP2601518B2 (fi)
AT (1) ATE110203T1 (fi)
CA (1) CA1301251C (fi)
DE (1) DE3851105T2 (fi)
DK (1) DK172568B1 (fi)
ES (1) ES2056931T3 (fi)
FI (1) FI92447C (fi)
GB (1) GB8716749D0 (fi)
NO (1) NO300350B1 (fi)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1156606A3 (en) * 1991-10-21 2004-02-04 Nec Corporation An optical transmission system
US5299044A (en) * 1992-08-24 1994-03-29 At&T Bell Laboratories Ranging method for use in TDMA systems on tree-and-branch optical networks
JP3143554B2 (ja) * 1993-12-09 2001-03-07 キヤノン株式会社 光通信方法及び光通信システム
JP2962219B2 (ja) * 1996-02-26 1999-10-12 日本電気株式会社 光受信器
US6650803B1 (en) 1999-11-02 2003-11-18 Xros, Inc. Method and apparatus for optical to electrical to optical conversion in an optical cross-connect switch
US6597826B1 (en) 1999-11-02 2003-07-22 Xros, Inc. Optical cross-connect switching system with bridging, test access and redundancy
US6792174B1 (en) 1999-11-02 2004-09-14 Nortel Networks Limited Method and apparatus for signaling between an optical cross-connect switch and attached network equipment
US6882765B1 (en) 1999-11-02 2005-04-19 Xros, Inc. Connection protection between clients and optical cross-connect switches
US6571030B1 (en) 1999-11-02 2003-05-27 Xros, Inc. Optical cross-connect switching system

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1158739A (en) * 1980-04-30 1983-12-13 William Rodman Distributed network synchronization system
JPS5916453B2 (ja) * 1981-12-03 1984-04-16 株式会社リコー 光デ−タ通信システム
CA1227844A (en) * 1983-09-07 1987-10-06 Michael T.H. Hewitt Communications network having a single node and a plurality of outstations
US4606023A (en) * 1984-05-31 1986-08-12 Applied Dynamic Research, Inc. Guard time elimination in a time-division multiplexed, active star-coupled, half-duplex mode, synchronous communications network

Also Published As

Publication number Publication date
FI92447B (fi) 1994-07-29
GB8716749D0 (en) 1987-08-19
DE3851105D1 (de) 1994-09-22
US4982446A (en) 1991-01-01
EP0300649B1 (en) 1994-08-17
NO883159D0 (no) 1988-07-15
NO883159L (no) 1989-01-17
NO300350B1 (no) 1997-05-12
ATE110203T1 (de) 1994-09-15
DK172568B1 (da) 1999-01-18
JPH01126037A (ja) 1989-05-18
ES2056931T3 (es) 1994-10-16
DE3851105T2 (de) 1995-02-23
FI92447C (fi) 1994-11-10
DK399388D0 (da) 1988-07-15
JP2601518B2 (ja) 1997-04-16
FI883369A0 (fi) 1988-07-15
CA1301251C (en) 1992-05-19
EP0300649A1 (en) 1989-01-25
DK399388A (da) 1989-01-17

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Legal Events

Date Code Title Description
FG Patent granted

Owner name: BRITISH TELECOMMUNICATIONS PUBLIC

BB Publication of examined application
MM Patent lapsed

Owner name: BRITISH TELECOMMUNICATIONS PUBLIC LIMITED COMPANY