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.

Date of Patent:
Oct. 20, 2015

Filed:

May. 14, 2013
Applicant:

Fujitsu Limited, Kawasaki-shi, Kanagawa, JP;

Inventors:

Koichiro Yamashita, Hachioji, JP;

Hiromasa Yamauchi, Kawasaki, JP;

Takahisa Suzuki, Kawasaki, JP;

Koji Kurihara, Kawasaki, JP;

Fumihiko Hayakawa, Kawasaki, JP;

Assignee:

FUJITSU LIMITED, Kawasaki, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 11/00 (2006.01); G06F 11/07 (2006.01); G06F 11/30 (2006.01); G06F 11/34 (2006.01);
U.S. Cl.
CPC ...
G06F 11/0757 (2013.01); G06F 11/0724 (2013.01); G06F 11/3041 (2013.01); G06F 11/3419 (2013.01); G06F 11/3485 (2013.01);
Abstract

An access method is executed by a multi-core processor system. The access method includes activating a driver that corresponds to a first CPU, based on a start of execution of a first application; starting measurement of an access time period, based on access of a peripheral device; outputting, when the access time period exceeds a predetermined time period, a detection signal to reset the driver; and prohibiting, when the access time period exceeds a predetermined time period, writing into a register retaining data to be written into the peripheral device from the first CPU.


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