Patent ID: 7966503

Claim:
A gateway card that is connected to an information processor and that receives and transmits data between different networks, the gateway card comprising: an access accepting unit that accepts an access request from an apparatus connected to one of the networks; a power mode checking unit that determines whether the information processor is in the normal power mode or in the power save mode; and an access control unit that leads the apparatus to make access to an external apparatus connected to another one of the networks and in a state that the operation of the information processor is maintained in a power-saving operation mode, when the access request is accepted in a state that the operation of the information processor is in a power-saving operation mode and also when the access request corresponds to the access to the external apparatus, and the access control unit carries out a control to adjust a difference between communication protocols of said one of the networks and said another one of the networks, wherein the access control unit analyzes the protocol relating to the access request and returns a dummy response to the apparatus; the access control unit issues to a power controller of the information processor a return request to return from the power saving operation mode to a normal operation mode when the protocol indicate a request for making access to the information processor and notifies the information processor a shift factor for shifting from the normal operation to the power saving mode after the access ends.