[go: up one dir, main page]

JPS5669942A - Light wavelength multiplex transmitter - Google Patents

Light wavelength multiplex transmitter

Info

Publication number
JPS5669942A
JPS5669942A JP14608279A JP14608279A JPS5669942A JP S5669942 A JPS5669942 A JP S5669942A JP 14608279 A JP14608279 A JP 14608279A JP 14608279 A JP14608279 A JP 14608279A JP S5669942 A JPS5669942 A JP S5669942A
Authority
JP
Japan
Prior art keywords
light
bit
light pulses
light emission
converter
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
JP14608279A
Other languages
Japanese (ja)
Inventor
Masaru Nakamura
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP14608279A priority Critical patent/JPS5669942A/en
Publication of JPS5669942A publication Critical patent/JPS5669942A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Optical Communication System (AREA)

Abstract

PURPOSE:To simplify a transmitter by transmitting and receiving digitized bits by light pulses differing in light emission wavelength when transmitting and receiving an analog signal by a light transmission system by converting it into a digital signal. CONSTITUTION:Analog television signal 2-1 to be transmitted is covered by A/D converter 2-2 into an eight-bit digital signal and eight-bit parallel signals are supplied to eight corresponding light transmitters 2-3 differing in light emission wavelength. Respective transmitters 2-3 generate light pulses corresponding to corresponding bit states and respective light pulses are mixed by light mixer 2-5 and sent to one optical fiber 2-6. At the reception terminal, branching filter 2-7 with branching characteristics corresponding to light emission wavelengths branches it into eight wave light pulses, which are passed through the next light receiver 2-9 to obtain parallel electric signals and eight-bit D/A converter 2-10 restores them to the original analog signal.
JP14608279A 1979-11-13 1979-11-13 Light wavelength multiplex transmitter Pending JPS5669942A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14608279A JPS5669942A (en) 1979-11-13 1979-11-13 Light wavelength multiplex transmitter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14608279A JPS5669942A (en) 1979-11-13 1979-11-13 Light wavelength multiplex transmitter

Publications (1)

Publication Number Publication Date
JPS5669942A true JPS5669942A (en) 1981-06-11

Family

ID=15399702

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14608279A Pending JPS5669942A (en) 1979-11-13 1979-11-13 Light wavelength multiplex transmitter

Country Status (1)

Country Link
JP (1) JPS5669942A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61261935A (en) * 1985-05-10 1986-11-20 インタ−ナシヨナル・スタンダ−ド・エレクトリツク・コ−ポレイシヨン Optical fiber communication method and system for local areanetwork by frequency division multiplexing

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61261935A (en) * 1985-05-10 1986-11-20 インタ−ナシヨナル・スタンダ−ド・エレクトリツク・コ−ポレイシヨン Optical fiber communication method and system for local areanetwork by frequency division multiplexing

Similar Documents

Publication Publication Date Title
US4628501A (en) Optical communications systems
CA2025521A1 (en) Dynamically responsive catv system with shared fiber optic link
ES487624A1 (en) Fiber optic signal conditioning circuit
TW325610B (en) Dynamic control of transmitting power at a transmitter and attenuation at a receiver
EP0346925A3 (en) Private branch radio communication system using optical fibers
RU2127490C1 (en) Duplicating optical data transmission device
EP0717521A3 (en) Optical network with subcarrier multiplexing
ATE151213T1 (en) DEVICE FOR DIGITAL DATA TRANSMISSION OVER A POWER NETWORK LINE
JPS57116449A (en) Digital transmissionsystem integrated with service
US4525834A (en) Service integrated digital transmission system
JPS57150258A (en) Sub-signal transmission system
JPS5669942A (en) Light wavelength multiplex transmitter
JPS55105453A (en) Optical wavelength multiple repeating system
RU94009503A (en) RECEIVER SCHEME
JPS56114457A (en) Wavelength-multiplex ring bus system
JPS56111336A (en) Wavelength multiplex loop communication system
JPS62247641A (en) Semi-double communication system
JPS5691542A (en) Data transmitter
JPS57138187A (en) Optical transmission network
JPS57155849A (en) Star type information transmission network
JPS5621433A (en) Photocoupler for half-duplex communication
JPS56149133A (en) Optical data link
JPS6439136A (en) Optical communication system for space
SU1570015A1 (en) Device for transmission and reception of digital signals
BELL Fiber optic multiplex optical transmission system[Patent]