Patent ID: 9310877
Filing Date: 2016-04-12
CPC Classification: G06F

Claim Text:
1. An information processing apparatus comprising: a main storage device; and at least one primary processor configured to, supply power to the main storage device while stopping power supply to the at least one primary processor when a power-save mode is set for the information processing apparatus, store operation status information indicating operation status of the at least one primary processor in the main storage device when shifting to the power-save mode, store storing-destination information indicating a storage area of the operation status information in the main storage device to a secondary storage device, stop power supply to the at least one primary processor after storing the operation status information and the storing-destination information, confirm return operation identification information set by at least one secondary processor, upon detecting a return-initiating event for returning from the power-save mode, and conduct an initialization process of the at least one primary processor after power supply to the at least one primary processor is resumed, obtain first present time information when shifting to the power-save mode, and store the first present time information in the main storing device or the secondary storing device, and obtain second present time information when the operation status information is read out and the at least one primary processor is restored, compute an elapsed time between the first present time and the second present time, determine completion status information regarding a plurality of timer processings, and based on the results of the determination, use the computed elapsed time for the uncompleted timer processing of the plurality of timer processings, and read out the operation status information stored in the main storage device based on the storing-destination information stored in the secondary storage device when the return operation identification information is confirmed.