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:
May. 10, 2005

Filed:

Feb. 10, 2004
Applicants:

Hiroshi Ohno, Hitachi, JP;

Tomoaki Nakamura, Hitachinaka, JP;

Shigenori Kaneko, Hitachinaka, JP;

Ryokichi Yoshizawa, Hitachinaka, JP;

Naoshi Kato, Hitachinaka, JP;

Manabu Yamauchi, Hitachi, JP;

Toshiaki Arai, Machida, JP;

Tomoki Sekiguchi, Yokohama, JP;

Inventors:

Hiroshi Ohno, Hitachi, JP;

Tomoaki Nakamura, Hitachinaka, JP;

Shigenori Kaneko, Hitachinaka, JP;

Ryokichi Yoshizawa, Hitachinaka, JP;

Naoshi Kato, Hitachinaka, JP;

Manabu Yamauchi, Hitachi, JP;

Toshiaki Arai, Machida, JP;

Tomoki Sekiguchi, Yokohama, JP;

Assignee:

Hitachi, Ltd., Tokyo, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F013/24 ;
U.S. Cl.
CPC ...
Abstract

An inter-OS control software for switching OS's in operation executed on a single CPU is installed, and plural OS's are made alternately executed. A control program is executed exclusively on one OS, which controls the controlled apparatus. A supervisory control program and a development environment program are executed on another OS, and a memory space is divided so as to make no effect for the operation of the control program. A higher real-time performance and reliability can be established with a single CPU architecture.


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