Electronic device and method for controlling the same
AssigneeCanon Kabushiki Kaisha
InventorAkihiro Matsumoto
Life of this patent
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Abstract
The present disclosure provides an electronic device including a main controller and a communication controller configured to communicate with the main controller and a device through a predetermined physical communication interface based on a predetermined communication standard. The communication controller instructs power-off of the predetermined physical communication interface and the device when an event which causes transition to a power saving state occurs in the main controller, and determines whether the predetermined physical communication interface is to be returned from the power saving state without power-on of the device or with power-on of the device when an event which causes return from the power saving state occurs in the main controller.
Claims10
An electronic device comprising:
- a main controller;
- and
- a communication controller configured to communicate with the main controller and a device through a predetermined physical communication interface based on a predetermined communication standard,
- wherein the communication controller
- instructs power-off of the predetermined physical communication interface and the device when an event which causes transition to a power saving state occurs in the main controller, and
- determines whether the predetermined physical communication interface is to be returned from the power saving state without power-on of the device or with power-on of the device when an event which causes return from the power saving state occurs in the main controller.
A method for controlling an electronic device including a main controller and a communication controller configured to communicate with the main controller and a device through a predetermined physical communication interface based on a predetermined communication standard, the method comprising:
- issuing an instruction, from the communication controller, for power-off of the predetermined physical communication interface and the device when an event which causes transition to a power saving state occurs in the main controller, and
- making a determination, by the communication controller, as to whether the predetermined physical communication interface is to be returned from the power saving state without power-on of the device or with power-on of the device when an event which causes return from the power saving state occurs in the main controller.
Dependencies are inferred from the claim text.