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JPS51140405A - Light communication monitoring system - Google Patents

Light communication monitoring system

Info

Publication number
JPS51140405A
JPS51140405A JP50064205A JP6420575A JPS51140405A JP S51140405 A JPS51140405 A JP S51140405A JP 50064205 A JP50064205 A JP 50064205A JP 6420575 A JP6420575 A JP 6420575A JP S51140405 A JPS51140405 A JP S51140405A
Authority
JP
Japan
Prior art keywords
monitoring system
light communication
communication monitoring
affecting
monitor
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.)
Granted
Application number
JP50064205A
Other languages
Japanese (ja)
Other versions
JPS5757895B2 (en
Inventor
Keiichi Takeda
Yoshiyuki Azuma
Yoshihisa Motomura
Koichi Oota
Yukio Minami
Akira Ashida
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.)
Hitachi Ltd
Tokyo Electric Power Co Holdings Inc
Original Assignee
Tokyo Electric Power Co Inc
Hitachi 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, Hitachi Ltd filed Critical Tokyo Electric Power Co Inc
Priority to JP50064205A priority Critical patent/JPS51140405A/en
Publication of JPS51140405A publication Critical patent/JPS51140405A/en
Publication of JPS5757895B2 publication Critical patent/JPS5757895B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/38—Synchronous or start-stop systems, e.g. for Baudot code
    • H04L25/40—Transmitting circuits; Receiving circuits
    • H04L25/49—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems
    • H04L25/4906—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems using binary codes
    • H04L25/4908—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems using binary codes using mBnB codes
    • H04L25/491—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems using binary codes using mBnB codes using 1B2B codes

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Time-Division Multiplex Systems (AREA)
  • Dc Digital Transmission (AREA)
  • Optical Communication System (AREA)

Abstract

PURPOSE:To transmit a monitoring information without a monitor leased channel and without affecting a transmission signal.
JP50064205A 1975-05-30 1975-05-30 Light communication monitoring system Granted JPS51140405A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP50064205A JPS51140405A (en) 1975-05-30 1975-05-30 Light communication monitoring system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP50064205A JPS51140405A (en) 1975-05-30 1975-05-30 Light communication monitoring system

Publications (2)

Publication Number Publication Date
JPS51140405A true JPS51140405A (en) 1976-12-03
JPS5757895B2 JPS5757895B2 (en) 1982-12-07

Family

ID=13251326

Family Applications (1)

Application Number Title Priority Date Filing Date
JP50064205A Granted JPS51140405A (en) 1975-05-30 1975-05-30 Light communication monitoring system

Country Status (1)

Country Link
JP (1) JPS51140405A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5683163A (en) * 1979-12-10 1981-07-07 Nec Corp Encoding system

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61148388U (en) * 1985-03-08 1986-09-12

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5683163A (en) * 1979-12-10 1981-07-07 Nec Corp Encoding system

Also Published As

Publication number Publication date
JPS5757895B2 (en) 1982-12-07

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