JPS5765041A - Data transmssion control system - Google Patents

Data transmssion control system

Info

Publication number
JPS5765041A
JPS5765041A JP55140588A JP14058880A JPS5765041A JP S5765041 A JPS5765041 A JP S5765041A JP 55140588 A JP55140588 A JP 55140588A JP 14058880 A JP14058880 A JP 14058880A JP S5765041 A JPS5765041 A JP S5765041A
Authority
JP
Japan
Prior art keywords
station
slave
master
signal
register
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
JP55140588A
Other languages
Japanese (ja)
Inventor
Keiji Yamada
Okifumi Suzuki
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.)
Ricoh Co Ltd
Original Assignee
Ricoh 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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP55140588A priority Critical patent/JPS5765041A/en
Publication of JPS5765041A publication Critical patent/JPS5765041A/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

Abstract

PURPOSE:To perform data transmission efficiently and to make the switching easy between a master station and slave stations with a simple constitution using registers, by the transfer of the right of lead of the main station to slave stations which process a lot of information with high emergency. CONSTITUTION:A data transmission control system consists of a main station bein a conrrol station and a plurality of slave stations which can become the control station, and the control system with this constitution is provided with a transmission control section 5 controlling the transmission line and a main station and slave station designation register 6. When the master station receives a master/slave switching request from a slave station, the master station transmits commands to the slave station and outputs a signal P from the section 5 to invert the register 6 and it is switched to the slave station with a signal Q. A slave station which receives the commands from the master station through a transmission line L outputs a signal R to invert the register 6 to switch the control into the master station control with the signal Q. The switching of the master and the slave stations can be made easy with a simple constitution using the register 6.
JP55140588A 1980-10-09 1980-10-09 Data transmssion control system Pending JPS5765041A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55140588A JPS5765041A (en) 1980-10-09 1980-10-09 Data transmssion control system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55140588A JPS5765041A (en) 1980-10-09 1980-10-09 Data transmssion control system

Publications (1)

Publication Number Publication Date
JPS5765041A true JPS5765041A (en) 1982-04-20

Family

ID=15272171

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55140588A Pending JPS5765041A (en) 1980-10-09 1980-10-09 Data transmssion control system

Country Status (1)

Country Link
JP (1) JPS5765041A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59146246A (en) * 1983-02-09 1984-08-22 Fujitsu Ltd Polling system
JPS60235558A (en) * 1984-05-08 1985-11-22 Matsushita Electric Ind Co Ltd Signal transmission system
JPS6123450A (en) * 1984-07-11 1986-01-31 Fujitsu Ltd Center switching system
JPS63169145A (en) * 1987-01-05 1988-07-13 Fujitsu Ltd Setting up processing system for data communication path in network

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59146246A (en) * 1983-02-09 1984-08-22 Fujitsu Ltd Polling system
JPS60235558A (en) * 1984-05-08 1985-11-22 Matsushita Electric Ind Co Ltd Signal transmission system
JPS6123450A (en) * 1984-07-11 1986-01-31 Fujitsu Ltd Center switching system
JPH0325104B2 (en) * 1984-07-11 1991-04-05 Fujitsu Ltd
JPS63169145A (en) * 1987-01-05 1988-07-13 Fujitsu Ltd Setting up processing system for data communication path in network

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