Information processing apparatus and controlling method
An information processing apparatus includes a first controller which is in an active state regardless of whether a state of a computer system is the active state or an idle state and a second controller which is in the active state in a case where the state of the computer system is the active state, a first low power consumption mode or a second low power consumption mode and is in the idle state in a case where the state of the computer system is a third low power consumption mode are provided. The first controller freely counts a time of day and changes the state of the computer system to the first low power consumption mode in a case where the state of the computer system is the third low power consumption mode and the time of day reaches a predetermined transition time of day.
1. An information processing apparatus comprising:
a computer system which is configured to transition between an active state and an idle state, wherein the idle state is lower than the active state in power consumption and is a power mode of at least any one of a first low power consumption mode, a second low power consumption mode which is longer than the first low power consumption mode in resume time for returning to the active state, and a third low power consumption mode which is lower than the second low power consumption mode in power consumption, wherein:
the computer system includes
a first controller which is in an active state regardless of whether a state of the computer system is the active state or the idle state, and
a second controller which is in an active state when the state of the computer system is the active state, the first low power consumption mode, or the second low power consumption mode; and is in an idle state when the state of the computer system is the third low power consumption mode, and
the first controller is configured to:
count a first time of day, and
change the state of the computer system to the first low power consumption mode when the state of the computer system is the third low power consumption mode and the first time of day reaches a predetermined first transition time of day.
2. The information processing apparatus according to claim 1 , wherein:
the second controller is configured to:
count a second time of day independently of the first time of day,
use the second time of day as a control base time which is a time of day used to control the state of the computer system, and
when the state of the computer system transitions from the first low power consumption mode to the second low power consumption mode, changes the control base time from the second time of day to the first time of day and thereafter changes the state of the computer system to the third low power consumption mode.
3. The information processing apparatus according to claim 1 , wherein:
the second low power consumption mode and the third low power consumption mode are operation modes that a processor stops an operation of the computer system.
4. The information processing apparatus according to claim 3 , wherein:
the second controller is configured to control input and output of data using other devices, and
the first low power consumption mode is an operation mode that the second controller inputs and outputs the data.
5. The information processing apparatus according to claim 4 , wherein:
the first controller starts up the second controller when the first time of day reaches a predetermined second transition time of day which is different from the first transition time of day, and
the second controller starts up the processor after completion of its own start-up.
6. The information processing apparatus according to claim 4 , wherein:
the second controller is configured to control data input and output faster than data input and output by the first controller.
7. A controlling method of an information processing apparatus that comprises:
a computer system configured to make a transition between an active state and an idle state, wherein the idle state is lower than the active state in power consumption and is a power mode of at least any one of a first low power consumption mode, a second low power consumption mode which is longer than the first low power consumption mode in resume time for returning to the active state; and a third low power consumption mode which is lower than the second low power consumption mode in power consumption, wherein:
the computer system includes:
a first controller which is in an active state regardless of whether a state of the computer system is the active state or the idle state, and
a second controller which is in an active state when the state of the computer system is the active state, the first low power consumption mode or the second low power consumption mode, and is in an idle state when the state of the computer system is the third low power consumption mode, the method comprising:
changing the state of the computer system to the first low power consumption mode by the first controller when the state of the computer system is the third low power consumption mode and a time of day that the first controller counts reaches a predetermined transition time of day.