JPS5269506A - Secondary carrier wave piling pcm-im communication system - Google Patents

Secondary carrier wave piling pcm-im communication system

Info

Publication number
JPS5269506A
JPS5269506A JP50146574A JP14657475A JPS5269506A JP S5269506 A JPS5269506 A JP S5269506A JP 50146574 A JP50146574 A JP 50146574A JP 14657475 A JP14657475 A JP 14657475A JP S5269506 A JPS5269506 A JP S5269506A
Authority
JP
Japan
Prior art keywords
pcm
communication system
carrier wave
secondary carrier
piling
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
JP50146574A
Other languages
Japanese (ja)
Inventor
Shunroku Sasaki
Kyoji Kameo
Satoshi Toyoda
Eiichirou Shibuya
Shimao Kubota
Yoshihisa Motomura
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.)
Fujitsu Ltd
Tokyo Electric Power Company Holdings Inc
Original Assignee
Tokyo Electric Power Co Inc
Fujitsu 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 Tokyo Electric Power Co Inc, Fujitsu Ltd filed Critical Tokyo Electric Power Co Inc
Priority to JP50146574A priority Critical patent/JPS5269506A/en
Publication of JPS5269506A publication Critical patent/JPS5269506A/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
    • H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
    • H04B10/075—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal
    • H04B10/077—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using a supervisory or additional signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J7/00—Multiplex systems in which the amplitudes or durations of the signals in individual channels are characteristic of those channels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B2210/00—Indexing scheme relating to optical transmission systems
    • H04B2210/07—Monitoring an optical transmission system using a supervisory signal
    • H04B2210/074—Monitoring an optical transmission system using a supervisory signal using a superposed, over-modulated signal

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Optical Communication System (AREA)
  • Testing Of Optical Devices Or Fibers (AREA)

Abstract

PURPOSE:In PCM-IM communication system, the transmission of subordinate signal such as circuit monitor, ordering, etc. as well as master signal becomes possible by pilling the secondary carrier wave which is modulated by subordinate signal. As result, the application range of light communication can be enlarged.
JP50146574A 1975-12-08 1975-12-08 Secondary carrier wave piling pcm-im communication system Pending JPS5269506A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP50146574A JPS5269506A (en) 1975-12-08 1975-12-08 Secondary carrier wave piling pcm-im communication system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP50146574A JPS5269506A (en) 1975-12-08 1975-12-08 Secondary carrier wave piling pcm-im communication system

Publications (1)

Publication Number Publication Date
JPS5269506A true JPS5269506A (en) 1977-06-09

Family

ID=15410758

Family Applications (1)

Application Number Title Priority Date Filing Date
JP50146574A Pending JPS5269506A (en) 1975-12-08 1975-12-08 Secondary carrier wave piling pcm-im communication system

Country Status (1)

Country Link
JP (1) JPS5269506A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55100795A (en) * 1979-01-27 1980-07-31 Nec Corp Remote control system
JPS55109097A (en) * 1979-02-14 1980-08-21 Nec Corp Remote control system
EP0075295A2 (en) * 1981-09-21 1983-03-30 Siemens Aktiengesellschaft Optical transmission system for high-frequency digital signals
FR2524230A1 (en) * 1982-03-26 1983-09-30 Lignes Telegraph Telephon Information transmission system for optical fibre link - uses generator to modulate information signal with service signals, and low pass filter to maintain constant output of laser diode
EP0165242A1 (en) * 1981-07-29 1985-12-27 Loughrey R Kuhn Fiber optic digital data transmitting system.
JPS62120250A (en) * 1985-11-15 1987-06-01 ヴエ−ズマト　フア−ルツオイクヴアシユアンラ−ゲン　ゲ−エムベ−ハ− Drier for automobiles
US4719616A (en) * 1984-09-14 1988-01-12 Yamatake Honeywell Communication method and apparatus
US6295272B1 (en) 1998-04-20 2001-09-25 Gadzoox Networks, Inc. Subchannel modulation scheme for carrying management and control data outside the regular data channel

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5513660A (en) * 1978-07-17 1980-01-30 Hitachi Ltd Induction motor

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5513660A (en) * 1978-07-17 1980-01-30 Hitachi Ltd Induction motor

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55100795A (en) * 1979-01-27 1980-07-31 Nec Corp Remote control system
JPS55109097A (en) * 1979-02-14 1980-08-21 Nec Corp Remote control system
EP0165242A1 (en) * 1981-07-29 1985-12-27 Loughrey R Kuhn Fiber optic digital data transmitting system.
JPS61500698A (en) * 1981-07-29 1986-04-10 オプティカル・コミュニケ−ションズ・コ−ポレ−ション Fiber optic digital data transmission system
USRE34676E (en) * 1981-07-29 1994-07-26 Optical Communications Corp. Fiber optic digital data transmitting system
EP0075295A2 (en) * 1981-09-21 1983-03-30 Siemens Aktiengesellschaft Optical transmission system for high-frequency digital signals
FR2524230A1 (en) * 1982-03-26 1983-09-30 Lignes Telegraph Telephon Information transmission system for optical fibre link - uses generator to modulate information signal with service signals, and low pass filter to maintain constant output of laser diode
US4719616A (en) * 1984-09-14 1988-01-12 Yamatake Honeywell Communication method and apparatus
JPS62120250A (en) * 1985-11-15 1987-06-01 ヴエ−ズマト　フア−ルツオイクヴアシユアンラ−ゲン　ゲ−エムベ−ハ− Drier for automobiles
US6295272B1 (en) 1998-04-20 2001-09-25 Gadzoox Networks, Inc. Subchannel modulation scheme for carrying management and control data outside the regular data channel

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