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. 05, 2017
Filed:
Apr. 14, 2016
Renesas Electronics Corporation, Tokyo, JP;
Naotaka Maruyama, Kanagawa, JP;
RENESAS ELECTRONICS CORPORATION, Tokyo, JP;
Abstract
The speed of task scheduling by a multitask OS is increased. A task processor includes a CPU, a save circuit, and a task control circuit. The CPU is provided with a processing register and an execution control circuit operative to load data from a memory into a processing register and execute a task in accordance with the data in the processing register. The save circuit is provided with a plurality of save registers respectively associated with a plurality of tasks. In executing a predetermined system call, the execution control circuit notifies the task control circuit as such. The task control circuit switches between tasks for execution upon receipt of the system call signal, by saving, in the save register associated with a task being executed, the data in the processing register, selecting a task to be executed next, and loading data in the save register associated with the selected task into the processing register.