JPS54148452A - Initiative-type high-speed duplicate data control system - Google Patents

Initiative-type high-speed duplicate data control system

Info

Publication number
JPS54148452A
JPS54148452A JP5778678A JP5778678A JPS54148452A JP S54148452 A JPS54148452 A JP S54148452A JP 5778678 A JP5778678 A JP 5778678A JP 5778678 A JP5778678 A JP 5778678A JP S54148452 A JPS54148452 A JP S54148452A
Authority
JP
Japan
Prior art keywords
logic time
computers
privileged
alteration
computer
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.)
Granted
Application number
JP5778678A
Other languages
Japanese (ja)
Other versions
JPS6022782B2 (en
Inventor
Yoshiyuki Nishihara
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP53057786A priority Critical patent/JPS6022782B2/en
Publication of JPS54148452A publication Critical patent/JPS54148452A/en
Publication of JPS6022782B2 publication Critical patent/JPS6022782B2/en
Expired legal-status Critical Current

Links

Abstract

PURPOSE: To maintain the identity of the duplicate data by making the logic time of the privileged computer equal to the logic time of other computers.
CONSTITUTION: Counter control unit 1 receives the end information of the logic time alteration from the computers other than the privileged computer through therminal 2, advances the contents by one for logic time counter 3 which counts the information of the logic time alteration of the computers other than the privileged computer, and then informes the alteration of the logic time to logic time control unit 4. Unit 4 consists of coincidence circuit 41 and alteration deciding circuit 42, checks the coincidence of the value between counter 3 and the computers other than the privileged computer, advances the logic time of the privileged cimputer by one when the coincidence of the value is obtained, and gives an order through terminal 5 the computers other than the priviledged computer to advance their logic time. As a result, the logical synchronism of the logic time can be secured between the privileged compter and other computers.
COPYRIGHT: (C)1979,JPO&Japio
JP53057786A 1978-05-15 1978-05-15 Initiated high-speed duplicate data control method Expired JPS6022782B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP53057786A JPS6022782B2 (en) 1978-05-15 1978-05-15 Initiated high-speed duplicate data control method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP53057786A JPS6022782B2 (en) 1978-05-15 1978-05-15 Initiated high-speed duplicate data control method

Publications (2)

Publication Number Publication Date
JPS54148452A true JPS54148452A (en) 1979-11-20
JPS6022782B2 JPS6022782B2 (en) 1985-06-04

Family

ID=13065557

Family Applications (1)

Application Number Title Priority Date Filing Date
JP53057786A Expired JPS6022782B2 (en) 1978-05-15 1978-05-15 Initiated high-speed duplicate data control method

Country Status (1)

Country Link
JP (1) JPS6022782B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62177649A (en) * 1986-01-30 1987-08-04 Nec Corp Process synchronizing method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62177649A (en) * 1986-01-30 1987-08-04 Nec Corp Process synchronizing method

Also Published As

Publication number Publication date
JPS6022782B2 (en) 1985-06-04

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