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:
Nov. 17, 2014
Applicant:
Renesas Electronics Corporation, Tokyo, JP;
Inventor:
Naotaka Maruyama, Fujisawa, JP;
Assignee:
Renesas Electronics Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F 9/50 (2006.01); G06F 9/48 (2006.01); G06F 9/46 (2006.01);
U.S. Cl.
CPC ...
G06F 9/5038 (2013.01); G06F 9/461 (2013.01); G06F 9/4812 (2013.01); G06F 9/4881 (2013.01);
Abstract
A plurality of tasks are processed simultaneously in a plurality of CPUs. A task control circuit is connected to the plurality of CPUs, and when executing a system call signal instruction, each CPU transmits a system call signal to the task control circuit. Upon receipt of a system call signal from a CPU 0, the task control circuitrefers to a processor management register, identifies a RUN-task of the CPU 0, selects a READY-task that is to be executed next, switches process data of the RUN-task and process data of the READY-task, and updates processor management information.