Information processing apparatus and wake-up control method
View Patent ↗According to one embodiment, an information processing apparatus includes devices including functions of generating wake-up signals, a controller which returns the apparatus to the power-on status in response to wake-up signals, and a first nonvolatile memory which stores information indicating whether the functions are enabled. The devices initializes such that the function is enabled if the information of the first nonvolatile memory has indicated that the function has been enabled when the power supply is started. The controller includes a second nonvolatile memory which stores information indicating devices to which power should be continuously supplied in the power-off status. The controller starts the power supply to the devices indicated that the power supply should be continued by the information of the second nonvolatile memory when the power supply is started, and continues the power supply in the power-off status to devices indicated that the power supply should be continued.
1. An information processing apparatus comprising a wake-up function of returning from a power-off status to a power-on status when a predetermined event occurs in a power-off status, comprising:
a device comprising a function of generating a wake-up signal for enabling the wake-up function when the predetermined event occurs;
a controller configured to control power supply to modules of the information processing apparatus, and to return the information processing apparatus to the power-on status in response to the wake-up signal generated by the device;
a first nonvolatile memory configured to store information indicating whether the function of generating the wake-up signal should be enabled;
an initialization module configured to initialize the device in such a manner as to enable the function of generating the wake-up signal, if the information stored in the first nonvolatile memory indicates that the function of generating the wake-up signal is set to be enabled when the power supply is started;
a second nonvolatile memory configured to store information indicating devices for which the function of generating the wake-up signal is to be enabled; and
a wake-up controller configured to start the power supply to the devices indicated in the information stored in the second nonvolatile memory when the power supply to the information processing apparatus is started, and to continue the power supply to the device in the power-off status,
wherein the first nonvolatile memory is in the device, and the second nonvolatile memory is in the controller.
2. The information processing apparatus of claim 1 , further comprising a set-up module configured to set whether the function of generating the wake-up signal should be enabled for the device.