Battery charging using a USB-ID pin of a USB interface
First Claim
Patent Images
1. A device comprising:
- a rechargeable battery;
a USB interface including a USB_ID pin; and
a battery charging circuit receiving a charge via the USB_ID pin from a charging device connected to the device via the USB interface, and the battery charging circuit charging the battery with the received charge.
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Abstract
A device includes a rechargeable battery and a USB interface including a USB_ID pin. A charging device is connected to the device via the USB interface. A battery charging circuit in the device receives a charge via the USB_ID pin from the charging device, and the battery charging circuit charges the battery with the received charge.
125 Citations
26 Claims
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1. A device comprising:
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a rechargeable battery; a USB interface including a USB_ID pin; and a battery charging circuit receiving a charge via the USB_ID pin from a charging device connected to the device via the USB interface, and the battery charging circuit charging the battery with the received charge. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A device comprising:
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a USB interface including a USB_ID pin and a VBUS pin, wherein a secondary device is connected to the device via the USB interface; and a boot up control circuit controlling boot up of the device based on a voltage generated by the secondary device on the USB_ID pin and a type of the secondary device determined from the voltage. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 25, 26)
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24. A method for controlling power supplied to a device from a secondary device, the method comprising:
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controlling boot up of the device from a secondary device connected to the device via a USB_ID pin and a VBUS pin in a USB interface; and controlling charging of a rechargeable battery in the device using a constant current or voltage supplied by the secondary device via the USB_ID pin.
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Specification