Information processing apparatus, information processing system, gateway card, gateway device, and computer product

An information processing system comprising:

• a data memory;
• and
• an information processing apparatus that is connected to the data memory, the information processing apparatus including
• a storage unit;
• an access control unit that allocates access between the storage unit and the data memory;
• and
• an information memory that stores information communicated between the access control unit and the data memory.

A gateway card. that is connected to an information processor and that allows transfer of data between different networks, comprising:

• a switching unit that is provided between the information processor, the gateway card, and a memory;
• a switch control unit that controls the switching unit to connect between the information processor and the memory when the operation status of the information processor is a first operation status, and controls the switching unit to connect between the gateway card and the memory when the operation status of the information processor is shifted from the first operation status to a second operation status;
• an access control unit that controls an access to the memory, that allocates the access to the memory via the switching unit when the operation status of the information processor is the second operation status, and that allocates the access to the memory via the information processor and the switching unit when the operation status of the information processor is the first operation status;
• and
• an information storage unit that stores information communicated between the access control unit and the information processor.

A gateway device comprising an information processor and a gateway card that is connected to the information processor and that allows transfer of data between different networks,

• the gateway card including
• a switching unit that is provided between the information processor, the gateway card, and a memory;
• a switch control unit that controls the switching unit to connect between the information processor and the memory when the operation status of the information processor is a first operation status, and controls the switching unit to connect between the gateway card and the memory when the operation status of the information processor is shifted from the first operation status to a second operation status;
• an access control unit that controls an access to the memory, that allocates the access to the memory via the switching unit when the operation status of the information processor is the second operation status, and that allocates the access to the memory via the information processor and the switching unit when the operation status of the information processor is the first operation status;
• and
• an information storage unit that stores information communicated between the access control unit and the information processor, wherein
• the information processor shifts the operation status from the first operation status to the second operation status when a predetermined cause of a shift occurs.

A computer program that is executed on a computer so as to control a gateway card that is connected to an information processor and that allows transfer of data between different networks, the computer program making the computer execute:

• switching a switching unit, which is provided between the information processor, the gateway card, and a storage unit, to connect between the information processor and the memory when the operation status of the information processor is a first operation status, and switching the switching unit to connect between the gateway card and the memory when the operation status of the information processor is shifted from the first operation status to a second operation status;
• allocating an access to the memory via the switching unit when the operation status of the information processor is the second operation status, and allocating an access to the memory via the information processor and the switching unit when the operation status of the information processor is the first operation status;
• and
• storing information communicated to the information processor while the information processor is being accessed.