Method and system for operating a portable electronic device in a power-limited manner
First Claim
1. A method of managing power in a portable electronic device, comprising:
- receiving a request to initiate a power intensive operation that consumes power from a battery in the portable electronic device;
comparing a level of the battery in the portable electronic device to a first threshold level;
initiating execution of the power intensive operation when the battery level is greater than the first threshold level;
otherwise, when the portable electronic device is connected to an external power source;
delaying execution of the power intensive operation until the battery level is greater than a second threshold level;
charging the battery;
measuring the battery level while charging the battery; and
continuing to charge the battery until the measured battery level is greater than a third threshold level, the third threshold level being determined from the second threshold level by adjusting to offset for effects of charging the battery.
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Abstract
Improved techniques to manage operation of a portable electronic device having a substantially depleted battery when power is available from an external, power-limited source are disclosed. In one embodiment of the invention, the substantially depleted battery can be initially charged while a power-intensive operation is delayed. Once the battery has adequate charge to assist the external, power-limited source in powering the portable electronic device, the power-intensive operation can be performed. In this manner, power consumption of a portable electronic device can be managed so that reliable operation is achieved without exceeding limits on power being drawn from an external, power-limited source.
57 Citations
15 Claims
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1. A method of managing power in a portable electronic device, comprising:
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receiving a request to initiate a power intensive operation that consumes power from a battery in the portable electronic device; comparing a level of the battery in the portable electronic device to a first threshold level; initiating execution of the power intensive operation when the battery level is greater than the first threshold level; otherwise, when the portable electronic device is connected to an external power source; delaying execution of the power intensive operation until the battery level is greater than a second threshold level; charging the battery; measuring the battery level while charging the battery; and continuing to charge the battery until the measured battery level is greater than a third threshold level, the third threshold level being determined from the second threshold level by adjusting to offset for effects of charging the battery. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A power manager system included in a portable electronic device, comprising:
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a battery monitor coupled to a battery in the portable electronic device arranged to determine a battery level of the battery; a battery charging circuit to charge the battery from an external power source; and a processor coupled to the battery monitor arranged to; initiate a power intensive operation when the battery monitor determines that the battery level is greater than a first threshold value, otherwise, when the portable electronic device is connected to an external power source; delay execution of the power intensive operation until the battery is charged to a level greater than a second threshold level; direct the battery charging circuit to charge the battery; direct the battery monitor to measure the battery level while the battery is charging; and direct the battery charging circuit to continue to charge the battery until the measured battery level is greater than a third threshold level that is determined from the second threshold level by adjusting to offset for effects of the charging. - View Dependent Claims (10)
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11. Computer program product encoded in a non-transitory computer readable medium for managing power in a portable electronic device, the computer program product comprising:
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computer program code for receiving a request to initiate a power intensive operation that consumes power from a battery in the portable electronic device; computer program code for comparing a level of the battery in the portable electronic device to a first threshold level; computer program code for initiating execution of the power intensive operation when the battery level is greater than the first threshold level; otherwise, when the portable electronic device is connected to an external power source; computer program code for delaying execution of the power intensive operation until the battery level is greater than a second threshold level; computer program code for charging the battery; computer program code for measuring the battery level while charging the battery; and computer program code for continuing to charge the battery until the measured battery level is greater than a third threshold level that is determined from the second threshold level by adjusting to offset for the effects of the charging. - View Dependent Claims (12, 13, 14, 15)
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Specification