JPS5654553A - Stand-by switching system - Google Patents
Stand-by switching systemInfo
- Publication number
- JPS5654553A JPS5654553A JP12894479A JP12894479A JPS5654553A JP S5654553 A JPS5654553 A JP S5654553A JP 12894479 A JP12894479 A JP 12894479A JP 12894479 A JP12894479 A JP 12894479A JP S5654553 A JPS5654553 A JP S5654553A
- Authority
- JP
- Japan
- Prior art keywords
- stand
- processor
- switching unit
- processors
- operation mode
- 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
Links
Landscapes
- Hardware Redundancy (AREA)
Abstract
PURPOSE: To set the operation mode same as an in-use machine automatically by presetting operation modes of respective in-use machines in a stand-by machine and by selecting the operation mode same as a switched in-use machine by a selective signal, indicating the switched in-use machine, supplied in stand-by switching mode.
CONSTITUTION: In-use data processors 1 and 2 with different operation modes are connected to switching unit 4 via interface signals 9 and 10 and further connected to lower devices 7 and 8 via switches 5 and 6 of switching unit 4. Further, stand-by data processor 3 is connected to switching unit 4 to make it possible to change devices 1 and 2 over to stand-by processor 3 according to a stand-by switching indication applied to switcing unit 4. In this stand-by processor 3, operation modes of processors 1 and 2 are set by switching unit 4 in advance and it is made possible for selective signal 12, supplied from switching unit 4 to stand-by processor 3 in stand-by switcing, to select either operation mode of processors 1 or 2, so that the operation mode same as processors 1 and 2 may automatically be set to stand-by processor 3.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12894479A JPS5654553A (en) | 1979-10-08 | 1979-10-08 | Stand-by switching system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12894479A JPS5654553A (en) | 1979-10-08 | 1979-10-08 | Stand-by switching system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5654553A true JPS5654553A (en) | 1981-05-14 |
Family
ID=14997257
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12894479A Pending JPS5654553A (en) | 1979-10-08 | 1979-10-08 | Stand-by switching system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5654553A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0268634A (en) * | 1988-09-05 | 1990-03-08 | Nippon Telegr & Teleph Corp <Ntt> | Spare system for electronic computer |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5478945A (en) * | 1977-12-06 | 1979-06-23 | Toshiba Corp | Process control computer system |
-
1979
- 1979-10-08 JP JP12894479A patent/JPS5654553A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5478945A (en) * | 1977-12-06 | 1979-06-23 | Toshiba Corp | Process control computer system |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0268634A (en) * | 1988-09-05 | 1990-03-08 | Nippon Telegr & Teleph Corp <Ntt> | Spare system for electronic computer |
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