JPS54148452A - Initiative-type high-speed duplicate data control system - Google Patents
Initiative-type high-speed duplicate data control systemInfo
- 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
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
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62177649A (en) * | 1986-01-30 | 1987-08-04 | Nec Corp | Process synchronizing method |
-
1978
- 1978-05-15 JP JP53057786A patent/JPS6022782B2/en not_active Expired
Cited By (1)
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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