JPS56111339A - Star network - Google Patents

Star network

Info

Publication number
JPS56111339A
JPS56111339A JP1355380A JP1355380A JPS56111339A JP S56111339 A JPS56111339 A JP S56111339A JP 1355380 A JP1355380 A JP 1355380A JP 1355380 A JP1355380 A JP 1355380A JP S56111339 A JPS56111339 A JP S56111339A
Authority
JP
Japan
Prior art keywords
channels
lambda3
lambda2
lambda1
multiplexed
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
JP1355380A
Other languages
Japanese (ja)
Inventor
Tomoo Kokkyo
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 JP1355380A priority Critical patent/JPS56111339A/en
Publication of JPS56111339A publication Critical patent/JPS56111339A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
    • G06F13/14—Handling requests for interconnection or transfer
    • G06F13/36—Handling requests for interconnection or transfer for access to common bus or bus system
    • G06F13/368—Handling requests for interconnection or transfer for access to common bus or bus system with decentralised access control

Abstract

PURPOSE:To prevent collision between signals by dividing the time to pass a signal transmitted from a station through a star coupler into frames of constant length, and by dividing each frame into channels, and then by fixedly assigning channels to respective stations. CONSTITUTION:One frame of star coupler 9 is multiplexed into four in time-division mode. Further, it is wavelength-multiplexed by three wavelengths and composed of 12 channels 1-1-4-3. Then, those channels are fixedly assigned to stations S1-S4; for example, S1 has channel number 1-1, S2 2-2.... A received signal is branched by a branching filter into lambda1, lambda2 and lambda3, which are led to reception processing circuit 15. Further, a signal transmitted from the transmission processing part is applied to light transmitters 18, 19 and 20 which outputs optical signals of lambda1, lambda2 and lambda3 and a signal is composed by synthesizer 21 and sent to transmission line 10.
JP1355380A 1980-02-08 1980-02-08 Star network Pending JPS56111339A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1355380A JPS56111339A (en) 1980-02-08 1980-02-08 Star network

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1355380A JPS56111339A (en) 1980-02-08 1980-02-08 Star network

Publications (1)

Publication Number Publication Date
JPS56111339A true JPS56111339A (en) 1981-09-03

Family

ID=11836352

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1355380A Pending JPS56111339A (en) 1980-02-08 1980-02-08 Star network

Country Status (1)

Country Link
JP (1) JPS56111339A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4467468A (en) * 1981-12-28 1984-08-21 At&T Bell Laboratories Optical communication system
JPS61189098A (en) * 1985-02-18 1986-08-22 Nippon Telegr & Teleph Corp <Ntt> Time division exchange system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4467468A (en) * 1981-12-28 1984-08-21 At&T Bell Laboratories Optical communication system
JPS61189098A (en) * 1985-02-18 1986-08-22 Nippon Telegr & Teleph Corp <Ntt> Time division exchange system

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