Patent ID: 8576431
Filing Date: 2013-11-05
Classification: G06F,H04N,Y02D

Abstract:
1. A device management system in which a device which is allowed to shift to a power saving mode and a management apparatus which manages the device are connected to a network, said system comprising: a power supply status notification unit configured to notify the management apparatus of a power supply status including information indicating whether or not a power supply of the device is ON and information indicating whether or not an operation mode of the device is a power saving mode; a power supply status monitoring unit configured to identify, based on a power supply status notification received from the device, a time at which the power supply of the device shifted to a different status and a time at which the operation mode of the device shifted to a different mode; a power supply status log recording unit configured to record, in a first memory, a power supply status log including the shift time to the different state or the different operation mode and a power supply status after the shift time; a job log recording unit at the device configured to record, in a second memory, a job log including a start time and an end time of a job executed by the device; a job log collection unit configured to be arranged in the management apparatus and issue a job log acquisition request to the device; a job log sending unit configured to send job log information recorded in the second memory to the management apparatus in response to the job log acquisition request from the management apparatus; and an update unit configured to additionally record, in the first memory, a log indicating that a status shifted to a status of job processing at the start time of the job and shifted to a status before the start time of the job at the end time of the job.