Battery charging interrupt
First Claim
1. A method, comprising:
- charging a battery of a device using a charging circuit that is coupled to a power supply;
detecting a conductive contact on a capacitive touch interface of the device;
measuring it level of noise on the capacitive touch interface in response to detection of the conductive contact;
determining whether the level of noise exceeds a noise level threshold; and
interrupting the battery charging, by isolating the charging circuit from the power supply, when the level of noise adversely affects performance of the capacitive touch interface by exceeding the noise level threshold.
2 Assignments
0 Petitions
Accused Products
Abstract
In embodiments of battery charging interrupt, a device (102) includes a capacitive touch interface (104), a battery (110), and a charging circuit (108) that charges the battery when the device is coupled to a power supply (114). A touch detection system (106) detects a conductive contact on the capacitive touch interface of the device, and the touch detection system determines a level of noise on the capacitive touch interface. The level of noise may increase due to the conductive contact on the touch interface while charging the battery. A device controller (126) determines a charge level of the battery. The device controller can then interrupt charging the battery when the level of the noise exceeds a noise level threshold (128) and when the charge level of the battery exceeds a minimum charge level.
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Citations
17 Claims
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1. A method, comprising:
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charging a battery of a device using a charging circuit that is coupled to a power supply; detecting a conductive contact on a capacitive touch interface of the device; measuring it level of noise on the capacitive touch interface in response to detection of the conductive contact; determining whether the level of noise exceeds a noise level threshold; and interrupting the battery charging, by isolating the charging circuit from the power supply, when the level of noise adversely affects performance of the capacitive touch interface by exceeding the noise level threshold. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A device, comprising:
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a charging circuit configured to charge a battery of the device when coupled to a power supply; a touch detection system configured to detect a conductive contact on a capacitive tone interface of the device, the touch detection system further configured to determine a level of noise on the capacitive touch interface in response to detection of the conductive contact; and a device controller that; determines whether to interrupt the battery charging based at least in part on the level of noise and interrupts the charging circuit from the power supply only while the conductive contact is detected on the capacitive touch surface; determines whether the level of noise exceeds a noise level threshold; and isolates the charging circuit from the power supply when the level of noise exceeds the noise level threshold. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16)
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17. A system, comprising:
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a device that includes a capacitive touch interface and charging circuit charges a battery of the device when coupled to a power source; a power supply configured to couple the power source to the charging circuit of the device to charge the battery; and a device controller that; initiates a low frequency, switched mode of the power supply based on a level of noise that is determined when a conductive contact on the capacitive touch interface is detected while the battery charges; determines whether the level noise exceeds a noise level threshold; determines a charge level of the battery; and isolates the charging circuit from the power supply when the level of noise exceeds the noise level threshold and when the charge level of the battery exceeds a minimum charge level.
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Specification