PURPOSE: To realize a backup which does not cause a breakdown of system as a whole with high reliability and high efficiency, by using together a double ratio synchronous operation system, a queuing spare operation system and an N+1 substitute system in accordance with the function of each processor.
CONSTITUTION: A processor CPA which works with a dual system is used as a master processor, and a processor CP'A works as a slave processor. These two processors perform the synchronous collation of data through a synchronous data transmission/reception line 3 and at the same time work together with a mutual check through a mutual monitor line 2. The processors CPB and CP'B apply a queuing spare system and connected to each other via a mutual monitor line 4. The processor CPB has an on-line operation as the using side; while the processor CP'B is always ready for an operation as the queuing side respectively
SUGANO ATSUSHI
HONDA KUNIO
| JPS4928211A | 1974-03-13 | |||
| JPS4871157A | 1973-09-26 | |||
| JPS4934748A | 1974-03-30 |
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