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:
Sep. 15, 2009
Filed:
Oct. 17, 2005
Noboru Asai, Osaka, JP;
Akira Kitamura, Osaka, JP;
Noboru Asai, Osaka, JP;
Akira Kitamura, Osaka, JP;
Panasonic Corporation, Osaka, JP;
Abstract
A general-purpose OS (operating system) is used as a host OS and a real-time OS operating as one or more tasks on the host OS is used as a guest OS. An interrupt handler and a task on the host OS and an interrupt handler and a task on the guest OS issue APIs (application program interfaces) for requesting task state change to a start, stop or like state. An API processor is provided in each OS and outputs an instruction for task state change. An instruction storage for storing instructions output from an API processor of the guest OS in order and outputting the instructions is provided. When interrupt handlers are not in execution, an instruction synchronization timing controller preferentially selects from instructions output from the API processor of the host OS and from the instruction storage the latter and outputs the selected instruction to a scheduler.