Computer executing multiple operating systems

Details Computer executing multiple operating systems Computer executing multiple operating systems

2005-01-03

2010-10-05

Bullock, Jr., Lewis A (Department: 2193)

Electrical computers and digital processing systems: virtual mac

Task management or control

Process scheduling

C718S102000

Reexamination Certificate

active

07810096

ABSTRACT:
A computer system having a plurality of operating systems and a module for switching the operating systems in view of priorities of tasks to be performed by each of the operating systems. Each of the operating systems performing a plurality of processes or threads in accordance with the priorities assigned to these processes or threads has a module for notifying the computer system of the priority of the currently executing process or thread. The computer system includes a module for translating the priorities sent from each operating system into priorities (normalized priorities) common-throughout the computer system, and a module for comparing the normalized priorities obtained by the priority translation module in order to select and execute preferentially the operating system having a common priority higher than that of any other operating system.

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