I/O control apparatus having check recovery function
US5931954A · kind A · utility
40Cited by
9References
32Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 13, 1997 |
| Grant date | Aug 3, 1999 |
| Priority date | — |
| Expiry date | Jan 13, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F11/1407
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
In a computer system, when a CPU performs a state setting operation, such as setting an appropriate operation mode for I/O devices, the log data of the state setting operation is stored in a log storage area. Upon occurrence of a fault in the computer system, the I/O devices are cleared, and the state setting operation of the I/O devices is performed on the basis of the log data of the prior state setting operation stored in the log storage area. Therefore, the states of the I/O devices can be recovered to a state at a checkpoint when the process is restarted.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.