Patent ID: 8671297

Claim:
A multifunctional device which is communicable with an external device via a network and shifts to a power saving mode in a case where a specific request is not made within a waiting time of the power saving mode, the multifunctional device comprising: a determination unit configured to determine whether a packet received via the network is an inhibition packet inhibiting a shift to the power saving mode or a maintenance of the power saving mode; a storage unit configured to store the time at which a packet is received and information indicating whether a packet is received during the power saving mode as information about the inhibition packet determined by the determination unit; a calculation unit configured to calculate an interval of access using a plurality of packets by an analysis of the plurality of packets based on the information about the packet stored in the storage unit; an analysis unit configured to compare the interval of access calculated by the calculation unit with the waiting time of the power saving mode to analyze the degree of inhibition of the power saving mode and classify accesses by the plurality of packets according to the degree; and a notification unit configured to provide notification of results analyzed by the analysis unit; wherein the analysis unit classifies the access of which the interval is shorter than the waiting time of the power saving mode into an access inhibiting a shift to the power saving mode and classifies the access of which the interval is not shorter than the waiting time of the power saving mode and which is made by the packet received during the power saving mode, into an access returning from the power saving mode.