JPS57108927A - Serial-bus transmssion system - Google Patents

Serial-bus transmssion system

Info

Publication number
JPS57108927A
JPS57108927A JP55182893A JP18289380A JPS57108927A JP S57108927 A JPS57108927 A JP S57108927A JP 55182893 A JP55182893 A JP 55182893A JP 18289380 A JP18289380 A JP 18289380A JP S57108927 A JPS57108927 A JP S57108927A
Authority
JP
Japan
Prior art keywords
transmission
station
stc
detecting
waiting time
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
JP55182893A
Other languages
Japanese (ja)
Inventor
Takushi Hamada
Masahiro Takahashi
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP55182893A priority Critical patent/JPS57108927A/en
Publication of JPS57108927A publication Critical patent/JPS57108927A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/40—Bus networks
    • H04L12/403—Bus networks with centralised control, e.g. polling

Abstract

PURPOSE:To secure the uniformity of service by greatly shortening the time until a transmission station is determined by suppressing the transmission waiting time of each transmission station, and by improving the transmission of a scramble signal for the right of transmission. CONSTITUTION:When only a control station CST is to send a transmission start signal POL, the transmission waiting time of each transmission station STi is set longer than upper-side one. When transmission stations STa and STc have transmission requests, the station STa starts sending information shortly after detecting the transmission start signal POL. Even when detecting the transmission start signal, the station STc waits for transmission until a transmission waiting time allotted to the station passes. During this period, the station STc knows that the station STa is in process of transmission, so it gives up its transmission. On detecting the completion of the transmission by the transmission station, the control station CST enters into next transmission.
JP55182893A 1980-12-25 1980-12-25 Serial-bus transmssion system Pending JPS57108927A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55182893A JPS57108927A (en) 1980-12-25 1980-12-25 Serial-bus transmssion system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55182893A JPS57108927A (en) 1980-12-25 1980-12-25 Serial-bus transmssion system

Publications (1)

Publication Number Publication Date
JPS57108927A true JPS57108927A (en) 1982-07-07

Family

ID=16126231

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55182893A Pending JPS57108927A (en) 1980-12-25 1980-12-25 Serial-bus transmssion system

Country Status (1)

Country Link
JP (1) JPS57108927A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60551A (en) * 1983-06-16 1985-01-05 Hitachi Ltd Central processor of data transmitting system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60551A (en) * 1983-06-16 1985-01-05 Hitachi Ltd Central processor of data transmitting system
JPH0312746B2 (en) * 1983-06-16 1991-02-20 Hitachi Ltd

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