Hitachi, Ltd.

Hitachi Information & Control Solutions, Ltd.

Yukiko Tahara

Eiji Kobayashi

Yusuke Seki

Yasuhiro Kiyofuji

Shin Kokura

Satoru Funaki

Masashi Suenaga

Toshiki Shimizu

Akihiro Onozuka

Yuta Sugimoto

A failure is detected immediately and certainly, and continuation of processing in an unstable state is prevented. A first error detection code is generated from first information which is output as a result of execution of a predetermined program conducted by a first processor. A second error detection code is generated from second information which is output as a result of execution of the program conducted by a second processor which is configured so as to output the same computation result as that of the first processor. It is detected whether the first information is the same as the second information, and it is detected whether the first error detection code is the same as the second error detection code. Writing the first information or the second information into a main memory is controlled on the basis of a result of the detection.

Control apparatus and control method

Growing community of inventors

Hitachi, Japan

Yukiko Tahara