Hitachi, Ltd.

Hitachi Software Engineering Company, Ltd.

Hitachi System Engineering, Ltd.

Hitachi Information Network, Ltd.

Natsuro Tanaka

Yoshihiro Nakajima

Tokuji Tamada

Akinori Minamisawa

Yasushi Meguro

Mitsuyoshi Takizawa

In a change-over control method for a parallel processor system including a current processor group having a plurality of processors and a network connecting the processors to each other and a standby processor group configured in the same way as for the current processor group, a processor control section is disposed in the parallel processor system, and a monitor processor is arranged for each of the current and standby processor groups. A faulty processor ratio determined according to the amount of job processing is set to the processor control section. On receiving a report notifying occurrence of a failure in a processor from the monitor processor disposed in the current processor group, the processor control section determines a ratio of failed processors in the current processor group. When the ratio is equal to or more than the faulty processor ratio, the processor control section effects a change-over operation of transferring job processing from the current processor group to the standby processor group.

Method and apparatus for performing change-over control to processor

A mail system comprises a message handling processor for storing code data and image data, a code data terminal for generating code data, an image data terminal for generating image data, and a code/image exchange unit for combining the code data and the image data into image data. The message handling processor converts the code data message from the code data terminal to image data by the exchange unit and combines the combined image data and the image data from the image data terminal to produce image data to be outputted to another image data terminal.

Combined output system for code data and image data in a message

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Hadano, Japan

Natsuro Tanaka