JPS5443636A - Information transfer system - Google Patents

Information transfer system

Info

Publication number
JPS5443636A
JPS5443636A JP10986777A JP10986777A JPS5443636A JP S5443636 A JPS5443636 A JP S5443636A JP 10986777 A JP10986777 A JP 10986777A JP 10986777 A JP10986777 A JP 10986777A JP S5443636 A JPS5443636 A JP S5443636A
Authority
JP
Japan
Prior art keywords
priority
circuit
information transmission
information
processors
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
JP10986777A
Other languages
Japanese (ja)
Inventor
Ken Shimotsuma
Masuo Murano
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 JP10986777A priority Critical patent/JPS5443636A/en
Publication of JPS5443636A publication Critical patent/JPS5443636A/en
Pending legal-status Critical Current

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Landscapes

  • Multi Processors (AREA)
  • Bus Control (AREA)

Abstract

PURPOSE: To eliminate the contradiction such as the usage of one information transmission line by any two information processors among a plural number of processors, by providing a priority decision circuit for making each information processor use the information.
CONSTITUTION: Several information processors 1, 2...k...n are connected to one information transmission line 10 and one priority line 20 without double connection, and respective processors 1, 2... are equipped with the 1st circuit 100 generating an information transmission request signal and the 2nd circuit 200 generating a priority signal. Further, this system is provided with the priority decision circuit composed of the 3rd circuit 300 which measures time aging when both circuits 200 and 200 start operating and the 4th circuit 400 which controls circuits 100 and 200 under conditions fixed uniformly by respective processors 1, 2... when circuit 300 starts the measurement. When an information transmission request occurs, the information transmission request signal and priority signal are transmitted to information transmission line 10 and priority line 20, under the conditions that there are neither information transmission signal nor priority signal from other processors 1, 2..., thereby permitting the use of the transmission line.
COPYRIGHT: (C)1979,JPO&Japio
JP10986777A 1977-09-14 1977-09-14 Information transfer system Pending JPS5443636A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10986777A JPS5443636A (en) 1977-09-14 1977-09-14 Information transfer system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10986777A JPS5443636A (en) 1977-09-14 1977-09-14 Information transfer system

Publications (1)

Publication Number Publication Date
JPS5443636A true JPS5443636A (en) 1979-04-06

Family

ID=14521200

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10986777A Pending JPS5443636A (en) 1977-09-14 1977-09-14 Information transfer system

Country Status (1)

Country Link
JP (1) JPS5443636A (en)

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