JPS575449A - Optical loop data transmitting system - Google Patents

Optical loop data transmitting system

Info

Publication number
JPS575449A
JPS575449A JP8005180A JP8005180A JPS575449A JP S575449 A JPS575449 A JP S575449A JP 8005180 A JP8005180 A JP 8005180A JP 8005180 A JP8005180 A JP 8005180A JP S575449 A JPS575449 A JP S575449A
Authority
JP
Japan
Prior art keywords
signal
optical
stations
transmission line
signals
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.)
Pending
Application number
JP8005180A
Other languages
Japanese (ja)
Inventor
Toshio Hasegawa
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP8005180A priority Critical patent/JPS575449A/en
Publication of JPS575449A publication Critical patent/JPS575449A/en
Pending legal-status Critical Current

Links

Classifications

    • 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
    • H04B10/29—Repeaters

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Small-Scale Networks (AREA)
  • Optical Communication System (AREA)

Abstract

PURPOSE:To increase the usage efficiency of transmission line without a guard band, by performing branch coupling of signal through the use of an optical passive component, performing reproduction and relaying of the signal and making the branch coupling of signals and delay time equal to the reproduction of signals from other stations. CONSTITUTION:An optical signal given to branch coupling type stations 13, 14 from an optical transmission line 3 is branched at 15 into a photoelectrical converting means O/E 8 of an optical pulse transmitting means 18 and a delay means 17. If the optical signal discriminated by the O/E 8 is a signal for the station itself, it is fetched to a line connection controlling section CSC11 and transmitted to a terminal 4, and if it is a signal for other stations, it is transmitted again to the optical transmitting line 3 via the electrooptic converting means E/O 9 and an optical coupling means 16. On the other hand, an optical signal given to the delay means 17 is delayed so that the signal for other stations is reproduced and it is equal to the delay time caused by the E/O 9, and coupled at 16 with the signal for other stations and transmitted to the optical transmission line 3. Thus, no guard band between burst signals is necessary.
JP8005180A 1980-06-13 1980-06-13 Optical loop data transmitting system Pending JPS575449A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8005180A JPS575449A (en) 1980-06-13 1980-06-13 Optical loop data transmitting system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8005180A JPS575449A (en) 1980-06-13 1980-06-13 Optical loop data transmitting system

Publications (1)

Publication Number Publication Date
JPS575449A true JPS575449A (en) 1982-01-12

Family

ID=13707435

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8005180A Pending JPS575449A (en) 1980-06-13 1980-06-13 Optical loop data transmitting system

Country Status (1)

Country Link
JP (1) JPS575449A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63175551A (en) * 1987-01-16 1988-07-19 Nec Corp Optical network system

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5553900A (en) * 1978-10-17 1980-04-19 Mitsubishi Electric Corp Linear particle accelerator

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5553900A (en) * 1978-10-17 1980-04-19 Mitsubishi Electric Corp Linear particle accelerator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63175551A (en) * 1987-01-16 1988-07-19 Nec Corp Optical network system

Similar Documents

Publication Publication Date Title
MY117523A (en) Multi-mode signal processing
MX9708209A (en) Data transmitter, data receiver, and data transmission controller.
EP0157704A3 (en) Duplex transmission mechanism for digital telephones
TW377534B (en) Channel training of multi-channel receiver system
DE3167165D1 (en) Digital transmission systems
JPS57150258A (en) Sub-signal transmission system
JPS57173232A (en) Automatic equalizer
CA2032322A1 (en) Supervisory circuit for optical repeater
JPS575449A (en) Optical loop data transmitting system
ATE201118T1 (en) DATA TRANSMISSION SYNCHRONIZATION METHOD BETWEEN A TRANSMITTER AND A RECEIVER
JPS57190436A (en) Adjusting method for optical transmitting line
JPS56103555A (en) Transmission output control system
JPS5613850A (en) Secondary signal piling transmission system
JPS57174943A (en) Power line carrier device
JPS647879A (en) Signal transmitting method
JPS5566161A (en) Two-wire system full double digital transmission device
JPS57181238A (en) Mobile communication system by leakage coaxial cable
JPS5573152A (en) Optical transmitter
JPS57155849A (en) Star type information transmission network
JPS53136910A (en) Initial connection system for time division multiple connecting communication system
JPS61170153A (en) Single line two-way optical communication device
JPH0323729A (en) Bidirectional optical pcm transmitter
JPS5758439A (en) Data transmission device
JPS5660127A (en) Optical fiber transmission system
JPS6474859A (en) Facsimile broadcasting device