JPS6418326A - Space propagation optical communication equipment - Google Patents

Space propagation optical communication equipment

Info

Publication number
JPS6418326A
JPS6418326A JP62175379A JP17537987A JPS6418326A JP S6418326 A JPS6418326 A JP S6418326A JP 62175379 A JP62175379 A JP 62175379A JP 17537987 A JP17537987 A JP 17537987A JP S6418326 A JPS6418326 A JP S6418326A
Authority
JP
Japan
Prior art keywords
signal
repeater
optical
transmission
pulse signal
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
JP62175379A
Other languages
Japanese (ja)
Inventor
Osamu Yoshikawa
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.)
SMK Corp
Original Assignee
SMK Corp
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 SMK Corp filed Critical SMK Corp
Priority to JP62175379A priority Critical patent/JPS6418326A/en
Publication of JPS6418326A publication Critical patent/JPS6418326A/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
    • H04B10/11—Arrangements specific to free-space transmission, i.e. transmission through air or vacuum
    • H04B10/114—Indoor or close-range type systems
    • H04B10/1149—Arrangements for indoor wireless networking of information

Landscapes

  • Engineering & Computer Science (AREA)
  • Computing Systems (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Optical Communication System (AREA)

Abstract

PURPOSE:To attain the communication only for a complete space propagation line with a simple repeater by using an optical pulse signal with different pulse frequency in response to a binary signal value so as to apply transmission and allowing the repeater to send an optical pulse signal in the same form as that of the received signal. CONSTITUTION:Devices 31-3n including a host computer are arranged in one and same room and they connect respectively to optical signal transmission/ reception adaptors 61-6n. The adaptors 61-6n have respectively a transmission circuit provided with a light emitting element 7 and a reception circuit provided with a light receiving element 8. The ceiling 1 is provided with a repeater 2 and with the light emitting/receiving elements for transmitting/receiving an optical signal. The transmission circuit converts a binary signal from a device into an electric pulse signal whose frequency varies differently in response to the signal, converts it further into an optical pulse signal and radiates it externally. The repeater 2 sends immediately the received optical signal without varying the signal form. Thus, the n:n communication able to be sent among the devices is attained.
JP62175379A 1987-07-14 1987-07-14 Space propagation optical communication equipment Pending JPS6418326A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62175379A JPS6418326A (en) 1987-07-14 1987-07-14 Space propagation optical communication equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62175379A JPS6418326A (en) 1987-07-14 1987-07-14 Space propagation optical communication equipment

Publications (1)

Publication Number Publication Date
JPS6418326A true JPS6418326A (en) 1989-01-23

Family

ID=15995077

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62175379A Pending JPS6418326A (en) 1987-07-14 1987-07-14 Space propagation optical communication equipment

Country Status (1)

Country Link
JP (1) JPS6418326A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03114325A (en) * 1989-09-28 1991-05-15 Nippon Columbia Co Ltd Optical pulse repeater
US5424859A (en) * 1992-09-24 1995-06-13 Nippon Telegraph And Telephone Corp. Transceiver for wireless in-building communication sytem
US5726786A (en) * 1995-11-21 1998-03-10 The Aerospace Corporation Free-space star-coupled optical data bus
US5786923A (en) * 1996-03-29 1998-07-28 Dominion Communications, Llc Point-to-multipoint wide area telecommunications network via atmospheric laser transmission through a remote optical router
JPH10209972A (en) * 1997-01-27 1998-08-07 Toshiba Corp Repeating installation, communication equipment, and communication system and relay method for the installation and equipment
US6348986B1 (en) 1996-03-29 2002-02-19 Dominion Lasercom. Inc. Wireless fiber-coupled telecommunication systems based on atmospheric transmission of laser signals
US6931183B2 (en) 1996-03-29 2005-08-16 Dominion Lasercom, Inc. Hybrid electro-optic cable for free space laser antennas

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03114325A (en) * 1989-09-28 1991-05-15 Nippon Columbia Co Ltd Optical pulse repeater
US5424859A (en) * 1992-09-24 1995-06-13 Nippon Telegraph And Telephone Corp. Transceiver for wireless in-building communication sytem
US5726786A (en) * 1995-11-21 1998-03-10 The Aerospace Corporation Free-space star-coupled optical data bus
US6701092B2 (en) 1996-03-29 2004-03-02 Dominion Lasercom, Inc. Laser based telecommunication network and router
US6348986B1 (en) 1996-03-29 2002-02-19 Dominion Lasercom. Inc. Wireless fiber-coupled telecommunication systems based on atmospheric transmission of laser signals
US6559993B2 (en) 1996-03-29 2003-05-06 Dominion Lasercom, Inc. Optical router for a light-based communication network
US6570692B2 (en) 1996-03-29 2003-05-27 Dominion Lasercom, Inc. Communication network based on the atmospheric transmission of light
US5786923A (en) * 1996-03-29 1998-07-28 Dominion Communications, Llc Point-to-multipoint wide area telecommunications network via atmospheric laser transmission through a remote optical router
US6931183B2 (en) 1996-03-29 2005-08-16 Dominion Lasercom, Inc. Hybrid electro-optic cable for free space laser antennas
US7092636B2 (en) 1996-03-29 2006-08-15 Dominion Lasercom, Inc. Optical network employing erbium-doped fiber amplifiers
JPH10209972A (en) * 1997-01-27 1998-08-07 Toshiba Corp Repeating installation, communication equipment, and communication system and relay method for the installation and equipment
US6480313B1 (en) 1997-01-27 2002-11-12 Kabushiki Kaisha Toshiba Apparatus and method of repeating for infrared communication devices
US7079779B2 (en) 1997-01-27 2006-07-18 Kabushiki Kaisha Toshiba Repeater apparatus, communication equipment, communication system thereof and repeating method

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