Power receiving apparatus, control method thereof and storage medium
AssigneeCanon Kabushiki Kaisha
InventorNobutsune Kobayashi
Life of this patent
Estimating the term…
Abstract
An object is to appropriately cope with that power supplied to a power receiving apparatus from an external device is not appropriate. An electronic device that drives by a bus power system and includes a detection unit configured to detect a drop in supply of power by the bus power system and a control unit configured to control the electronic device so that power consumption is reduced in a case where a drop in the supply of power is detected by the detection unit.
Claims13
A power receiving apparatus that is enabled to drive by receiving supply of power from a power supplying device outside the power receiving apparatus and operates in any of a plurality of states including a first power state and a second power state where power consumption is smaller than that in the first power state, the power receiving apparatus comprising:
- a receiving unit configured to receive supply of power whose magnitude is based on power consumption of the power receiving apparatus from the power supplying device via a predetermined interface;
- a determining unit configured to determine an application state related to application of voltage in a predetermined pin included in a connector of the predetermined interface;
- a first operation control unit configured to cause the power receiving apparatus to operate in the first power state based on the fact that the application state in the predetermined pin is a first application state and configured to cause the power receiving apparatus to operate in the second power state based on a fact that the application state in the predetermined pin is a second application state;
- and
- a second operation control unit configured to, after the power receiving apparatus is caused to operate in the first power state, keep the power receiving apparatus to operate in the first power state based on a fact that voltage at a terminal of the predetermined interface is a first value, and configured to, after the receiving apparatus device is caused to operate in the first power state, cause the power receiving apparatus to operate in a predetermined power state where power consumption is smaller than that in the first power state based on a fact that the voltage at the terminal of the predetermined interface is a second value less than the first value.
A control method of a power receiving apparatus that is enabled to drive by receiving supply of power from a power supplying device outside the power receiving apparatus and operates in any of a plurality of states including a first power state and a second power state where power consumption is smaller than that in the first state, the control method comprising the steps of:
- receiving supply of power whose magnitude is based on power consumption of the power receiving apparatus from the power supplying device via a predetermined interface;
- determining an application state related to application of a voltage in a predetermined pin included in a connector of the predetermined interface;
- causing the power receiving apparatus to operate in the first power state based on a fact that the application state in the predetermined pin is the first application state and causing the power receiving apparatus to operate in the second power state based on a fact that the application state in the predetermined pin is a second application state;
- and
- keeping, after the power receiving apparatus is caused to operate in the first power state, the power receiving apparatus to operate in the first power state based on a fact that voltage at a terminal of the predetermined interface is a first value, and causing the power receiving apparatus to operate in a predetermined power state where power consumption is smaller than that in the first power state based on a fact that the voltage at the terminal of the predetermined interface is a second value less than the first value.
A non-transitory computer readable storage medium storing a program for causing a computer to perform a control method of a power receiving apparatus that is enabled to drive by receiving supply of power from a power supplying device outside the power receiving apparatus and operates in any of a plurality of states including a first power state and a second power state where power consumption is smaller than that in the first state, the control method comprising the steps of:
- receiving supply of power whose magnitude is based on power consumption of the power receiving apparatus from the power supplying device via a predetermined interface;
- determining an application state related to application of a voltage in a predetermined pin included in a connector of the predetermined interface;
- causing the power receiving apparatus to operate in the first power state based on a fact that the application state in the predetermined pin is the first application state and causing the power receiving apparatus to operate in the second power state based on a fact that the application state in the predetermined pin is a second application state;
- and
- keeping, after the power receiving apparatus is caused to operate in the first power state, the power receiving apparatus to operate in the first power state based on a fact that voltage at a terminal of the predetermined interface is a first value, and causing the power receiving apparatus to operate in a predetermined power state where power consumption is smaller than that in the first power state based on a fact that the voltage at the terminal of the predetermined interface is a second value less than the first value.
Dependencies are inferred from the claim text.