Information processing apparatus
View Patent ↗According to one embodiment, an information processing apparatus including a suspension/resume function includes a bus controller which controls a bus capable of transmitting data at a first transmission speed or a second transmission speed lower than the first transmission speed, a storage module which stores setting information for limiting a data transmission speed of the bus to the second transmission speed, an initializing module which initializes the bus controller so as to limit the data transmission speed of the bus to the second transmission speed if the setting information is stored in the storage module when the apparatus is activated or returned from a suspended state, and a controller which stores the setting information into the storage module and makes the apparatus transit to the suspended state and return from the suspended state, when the transmission speed of the bus is limited to the second transmission speed.
1. An information processing apparatus comprising a suspension/resume function, comprising:
a bus controller configured to control a bus capable of data transfer at a first transmission speed or a second transmission speed lower than the first transmission speed;
a storage module configured to store setting information for limiting a transmission speed of the bus to the second transmission speed;
an initializing module configured to initialize the bus controller so as to limit the data transmission speed to the second transmission speed if the setting information is stored in the storage module when the apparatus is activated or returned from a suspended state; and
a controller configured to limit the data transmission speed to the second transmission speed when a state of operation by externally-input electric power transits to a state of operation by electric power from the battery by storing the setting information into the storage module and making the apparatus transit to the suspended state and return from the suspended state.
2. The apparatus of claim 1 , wherein the control module is configured to delete the setting information in the storage module and to make the apparatus transit to the suspended state and return from the suspended state, when the limiting of the data transmission speed of the bus is released.
3. The apparatus of claim 1 , wherein the bus conforms with a serial advanced technology attachment (ATA) standard.
4. The apparatus of claim 1 , further comprising a setting module configured to set whether or not the data transmission speed of the bus is to be limited to the second transmission speed when a state of operation by externally-input electric power transits to a state of operation by electric power from the battery.
5. The apparatus of claim 1 , wherein the storage device is provided in a real time clock (RTC).