JPS54157403A - Information transfer system - Google Patents

Information transfer system

Info

Publication number
JPS54157403A
JPS54157403A JP6566678A JP6566678A JPS54157403A JP S54157403 A JPS54157403 A JP S54157403A JP 6566678 A JP6566678 A JP 6566678A JP 6566678 A JP6566678 A JP 6566678A JP S54157403 A JPS54157403 A JP S54157403A
Authority
JP
Japan
Prior art keywords
optical
electricity
light
converters
communication system
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
JP6566678A
Other languages
Japanese (ja)
Inventor
Masanori Honda
Muna Suga
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
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
Application filed by Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP6566678A priority Critical patent/JPS54157403A/en
Publication of JPS54157403A publication Critical patent/JPS54157403A/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
    • H04B10/25—Arrangements specific to fibre transmission

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Dc Digital Transmission (AREA)
  • Optical Communication System (AREA)

Abstract

PURPOSE:To realize a highly reliable information transmission regardless of the earth potential by carrying out the information transfer between two areas possessing the earth potential via the optical cable. CONSTITUTION:PCM end office equipment 21 and 26 plus repeaters 22 and 23 are those installed in the existing communication system. And the optical transmission system comprising electricity-light converters 24 and 25 is incorporated into this communication system. Each of converters 24 and 25 consists of interface INT, electricity-light converter E/O and light-electricity converter O/E each. The bipolar signal used as the normal PCM signal receives a fixed bias to be converted to the optical signal and thus to be turned to the optical bipolar signal featuring the ternary level.
JP6566678A 1978-06-02 1978-06-02 Information transfer system Pending JPS54157403A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6566678A JPS54157403A (en) 1978-06-02 1978-06-02 Information transfer system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6566678A JPS54157403A (en) 1978-06-02 1978-06-02 Information transfer system

Publications (1)

Publication Number Publication Date
JPS54157403A true JPS54157403A (en) 1979-12-12

Family

ID=13293536

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6566678A Pending JPS54157403A (en) 1978-06-02 1978-06-02 Information transfer system

Country Status (1)

Country Link
JP (1) JPS54157403A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57162533A (en) * 1981-03-31 1982-10-06 Hitachi Ltd Optical transmitter of information
JPH02244853A (en) * 1989-03-17 1990-09-28 Hitachi Ltd Method and device for transmitting pulse signal and semiconductor switch suitable for transmission of the same

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57162533A (en) * 1981-03-31 1982-10-06 Hitachi Ltd Optical transmitter of information
JPH0139255B2 (en) * 1981-03-31 1989-08-18 Hitachi Ltd
JPH02244853A (en) * 1989-03-17 1990-09-28 Hitachi Ltd Method and device for transmitting pulse signal and semiconductor switch suitable for transmission of the same

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