Patent ID: 7290171
Filing Date: 2007-10-30
Classification: G06F,Y02D

Abstract:
1. A device driver stored on a computer readable medium for controlling devices of recipient type connected to a bus capable of being connected to a plurality of devices and supplying electric power to the connected devices, said device driver comprising: a remaining power knowledge acquisition section for acquiring knowledge of remaining electric power capacity of the bus prior to a notice of power consumption from the device of recipient type connected to the bus, the notice of power consumption identifying a consumption value to be used up by the device; and an electric power supply control section for acquiring a consumption value expected to be identified by the notice of power consumption from the device of the recipient type prior to said notice of power consumption, permitting the notice of power consumption by the device of recipient type and causing the bus to start electric power supply, or to start electric power supply by avoidance processing in order to avoid shortage of power, according to whether the remaining electric power acquired by said remaining power knowledge acquisition section is satisfactory for the consumption value expected to be identified by the notice of power consumption from the device of recipient type.