JPS56111337A - Slotted-star network - Google Patents

Slotted-star network

Info

Publication number
JPS56111337A
JPS56111337A JP1355180A JP1355180A JPS56111337A JP S56111337 A JPS56111337 A JP S56111337A JP 1355180 A JP1355180 A JP 1355180A JP 1355180 A JP1355180 A JP 1355180A JP S56111337 A JPS56111337 A JP S56111337A
Authority
JP
Japan
Prior art keywords
photocoupler
transmission
parts
vacancy
station
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
JP1355180A
Other languages
Japanese (ja)
Inventor
Tatsuo Kaji
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 JP1355180A priority Critical patent/JPS56111337A/en
Publication of JPS56111337A publication Critical patent/JPS56111337A/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
    • H04B10/27—Arrangements for networking

Abstract

PURPOSE:To prevent collision between signals by allowing a signal to arrive at a photocoupler after a lapse of time assigned previously to each station after vacancy of the photocoupler is detected, by providing each station with the function of detecting the vacancy of the photocoupler. CONSTITUTION:Reception parts S1R-S4R of respective stations are arranged equally at distance (l) from photocoupler C and can detect the no-signal state (vacant state) of the photocoupler at the same time. Once the said vacant state is detected, stations whose transmission parts S1T-S4T have transmission requests start the transmission and since respective transmission parts are arranged at intervals of length (l) from the photocoupler as shown in the figure, data arriving at photocoupler C from respective transmission parts S1T-S4T never overlap, so that the collision between data is prevented.
JP1355180A 1980-02-08 1980-02-08 Slotted-star network Pending JPS56111337A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1355180A JPS56111337A (en) 1980-02-08 1980-02-08 Slotted-star network

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1355180A JPS56111337A (en) 1980-02-08 1980-02-08 Slotted-star network

Publications (1)

Publication Number Publication Date
JPS56111337A true JPS56111337A (en) 1981-09-03

Family

ID=11836295

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1355180A Pending JPS56111337A (en) 1980-02-08 1980-02-08 Slotted-star network

Country Status (1)

Country Link
JP (1) JPS56111337A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6152107A (en) * 1984-08-22 1986-03-14 株式会社日立製作所 Protecting relay system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6152107A (en) * 1984-08-22 1986-03-14 株式会社日立製作所 Protecting relay system
JPH0458255B2 (en) * 1984-08-22 1992-09-17 Hitachi Ltd

Similar Documents

Publication Publication Date Title
IE781083L (en) Facsimile installations
JPS5765036A (en) Loop type data highway system
JPS547204A (en) Simultaneous transmission system for plural stations
JPS5792948A (en) Loop data transmission system
JPS56111337A (en) Slotted-star network
JPS54119808A (en) Information delivery system
JPS5332609A (en) Detecting system for interference signal by means of time sharing
JPS57125550A (en) Data collecting system
JPS5528615A (en) Data communication system
JPS57106251A (en) Monitor system
JPS56104558A (en) Switching system of multitransmission line
JPS5379409A (en) Transmission control system
JPS54104710A (en) Information transmission system
JPS54157010A (en) Subscriber congestion detection unit
JPS562765A (en) Unidirectional multiple address communication system
JPS54918A (en) Facsimile transmission system
JPS5634258A (en) Frame sequence number control system
JPS5715539A (en) Monitoring system for transmission system
JPS6461199A (en) Data transmission system for telemeter system
JPS5433609A (en) Order line communication system for scpc
JPS54121016A (en) Communication control unit
JPS5389307A (en) Test system for communicating line system
JPS57138240A (en) Hairpin network
JPS5739656A (en) Detection system for open subscriber line
JPS56132036A (en) Confirmation system for operating equipment of terminal station