Electronic device and charging control method
AssigneeToshiba Client Solutions CO., LTD.
InventorKatsuhiro Uchida
Life of this patent
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Abstract
According to one embodiment, an electronic device includes a power delivery controller and an embedded controller. The power delivery controller supplies a first signal to the embedded controller when reception of a power from an external device is started, and supplies a second signal to the embedded controller when a first value of the power from the external device is changed. The embedded controller acquires first data from the power delivery controller when the first signal is supplied in an activation time, acquires a second value of the power to be received from the external device from a power circuit, and acquires second data from the power delivery controller when the first value indicated by the first data is different from the second value.
Claims15
An electronic device operable with a battery, the electronic device comprising:
- a connector connectable with a cable enabling data transfer and power transfer;
- a power delivery controller that controls power transfer between the electronic device and an external device connected to the electronic device via the connector;
- a power charge/discharge circuit that controls charging and discharging of the battery;
- and
- an embedded controller that communicates with the power delivery controller and the power charge/discharge circuit, and charges the battery with a power received from the external device, wherein
- the power delivery controller
- supplies a first interrupt signal to the embedded controller to cause the embedded controller to acquire first status data including a first power reception condition, when reception of the power from the external device is started, and
- supplies a second interrupt signal to the embedded controller to cause the embedded controller to acquire second status data including a second power reception condition, when a first voltage value of the power to be received from the external device is changed by communicating with the external device, and
- the embedded controller
- acquires the first status data from the power delivery controller, when the first interrupt signal from the power delivery controller is supplied in an activation time,
- acquires a second voltage value of the power to be received from the external device from the power charge/discharge circuit, after a process associated with the first interrupt signal is completed, and
- acquires the second status data from the power delivery controller, when the first voltage value indicated by the first status data is different from the second voltage value.
A charging control method of an electronic device operable with a battery,
- the electronic device comprising a power delivery controller and an embedded controller,
- the power delivery controller controlling power transfer between the electronic device and an external device connected to the electronic device,
- the embedded controller causing a power charge/discharge circuit to charge the battery with a power received from the external device,
- the method comprising:
- supplying, by the power delivery controller, a first interrupt signal to the embedded controller to cause the embedded controller to acquire first status data including a first power reception condition, when the power delivery controller starts receiving the power from the external device;
- supplying, by the power delivery controller, a second interrupt signal to the embedded controller to cause the embedded controller to acquire second status data including a second power reception condition, when a first voltage value of the power to be received from the external device is changed by communicating with the external device;
- acquiring, by the embedded controller, the first status data from the power delivery controller, when the first interrupt signal from the power delivery controller is supplied in an activation time;
- acquiring, by the embedded controller, a second voltage value of the power to be received from the external device from the power charge/discharge circuit, after a process associated with the first interrupt signal is completed;
- and
- acquiring, by the embedded controller, the second status data from the power delivery controller, when the first voltage value indicated by the first status data is different from the second voltage value.
Dependencies are inferred from the claim text.