Computing machine, access management method, and access management program
US9558364B2 · kind B2 · utility
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8Claims
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Key dates
| Filing date | Feb 23, 2012 |
| Grant date | Jan 31, 2017 |
| Priority date | — |
| Expiry date | Feb 23, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2009/45587
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
When an access occurs to an I/O device from an OS 231a, an I/O allocation unit refers to an I/O allocation table, and determines whether the I/O device is allocated to other OS 231b. When the I/O device is allocated to another OS 231b, a control unit notifies the OS 231a of an error. When the I/O device is not allocated to either of the OSs 231a-b, the I/O allocation unit updates the I/O allocation table in order to allocate the I/O device to the OS 231a, and an I/O emulation unit emulates the access to the I/O device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.