JPS5613850A - Secondary signal piling transmission system - Google Patents

Secondary signal piling transmission system

Info

Publication number
JPS5613850A
JPS5613850A JP8969079A JP8969079A JPS5613850A JP S5613850 A JPS5613850 A JP S5613850A JP 8969079 A JP8969079 A JP 8969079A JP 8969079 A JP8969079 A JP 8969079A JP S5613850 A JPS5613850 A JP S5613850A
Authority
JP
Grant status
Application
Patent type
Prior art keywords
signal
secondary
main
circuit
identification
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
JP8969079A
Inventor
Satoshi Ikeuchi
Original Assignee
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

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04JMULTIPLEX COMMUNICATION
    • H04J7/00Multiplex systems in which the amplitudes or durations of the signals in individual channels are characteristic of those channels
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B10/00Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/07Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
    • H04B10/075Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal
    • H04B10/077Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using a supervisory or additional signal
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B2210/00Indexing scheme relating to optical transmission systems
    • H04B2210/07Monitoring an optical transmission system using a supervisory signal
    • H04B2210/074Monitoring an optical transmission system using a supervisory signal using a superposed, over-modulated signal

Abstract

PURPOSE:To reduce the effect of the secondary signal to be given to the main signal as well as facilitate an formation of the integrated circuit by transmitting the coded secondary signal with amplitude piling only to the mark side of the main signal, thus realizing a small structure of the device as a whole. CONSTITUTION:Both main signal (a) sent from input terminal 1 and coded 4 secondary signal (b) sent from input terminal 2 are applied to sum circuit 3. Then signal (b) receives the amplitude piling at the mark side of signal (a) and is then converted 5 into the photosignal to be transmitted via optical fiber 6. On the other hand, the received photosignal is converted 7 into the electric signal at the receiving side. And main signal identifying/reproducing circuit 8 performs the identification of main signal PM at identification level Lm, and signal PM is delivered to output terminal 9. At the same time, secondary signal identifying/reproducing circuit 10 gives the identification to secondary signal PS at identification level Ls, and signal PS is delivered to terminal 9 through decoder 11.
JP8969079A 1979-07-14 1979-07-14 Secondary signal piling transmission system Pending JPS5613850A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8969079A JPS5613850A (en) 1979-07-14 1979-07-14 Secondary signal piling transmission system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8969079A JPS5613850A (en) 1979-07-14 1979-07-14 Secondary signal piling transmission system

Publications (1)

Publication Number Publication Date
JPS5613850A true true JPS5613850A (en) 1981-02-10

Family

ID=13977747

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8969079A Pending JPS5613850A (en) 1979-07-14 1979-07-14 Secondary signal piling transmission system

Country Status (1)

Country Link
JP (1) JPS5613850A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56163614A (en) * 1980-05-21 1981-12-16 Tokyo Shibaura Electric Co Warmth keeping kettle
EP0732818A2 (en) * 1995-03-15 1996-09-18 Nec Corporation Optical transmission system for transmitting a main signal and a subsignal
EP1557969A2 (en) * 1998-04-03 2005-07-27 ATMEL Germany GmbH Amplitude multiplexing of digital signals

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56163614A (en) * 1980-05-21 1981-12-16 Tokyo Shibaura Electric Co Warmth keeping kettle
EP0732818A2 (en) * 1995-03-15 1996-09-18 Nec Corporation Optical transmission system for transmitting a main signal and a subsignal
EP0732818A3 (en) * 1995-03-15 1999-10-20 Nec Corporation Optical transmission system for transmitting a main signal and a subsignal
EP1557969A2 (en) * 1998-04-03 2005-07-27 ATMEL Germany GmbH Amplitude multiplexing of digital signals
EP1557969A3 (en) * 1998-04-03 2006-06-07 ATMEL Germany GmbH Amplitude multiplexing of digital signals

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