The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 12, 2013
Filed:
Sep. 26, 2005
Naoto Okino, Tokyo, JP;
Atsushi Togawa, Tokyo, JP;
Naoto Okino, Tokyo, JP;
Atsushi Togawa, Tokyo, JP;
Sony Corporation, Tokyo, JP;
Abstract
An improved interrupt control mechanism is provided in a system in which a plurality of OS's (OS's) are concurrently operating. In the system, a main OS executing an interrupt control process is set up, sub OS's other than the main OS are not provided with a right to determine an interrupt mask, the sub OS notifies the main OS whether the sub OS is in an interrupt enabled state or an interrupt disabled state, and the main OS performs an interrupt mask control process based on the notified information. In this arrangement, an inconvenience that an interrupt process is reserved due to a mask control performed by the sub OS itself is corrected, the main OS can perform the interrupt control as the main OS intends, and a required interrupt process can be performed with priority. Memory area is saved because a vector area of the sub OS is managed by the main OS.