Method and system for monitoring battery
First Claim
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1. A method for monitoring a battery in a battery-powered electronic apparatus having a microprocessor therein, the method comprising the steps of:
- a) stopping a task running on the microprocessor in response to a check timing signal;
b) detecting an output voltage of the battery after the task is stopped running on the microprocessor;
c) resuming the task running on the microprocessor after the output voltage has been detected; and
d) monitoring a state of the battery based on the detected output voltage.
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Abstract
In a battery-powered electronic apparatus having a microprocessor therein, any task is stopped running on the microprocessor in response to a check timing signal and, after the task is stopped running on the microprocessor, an output voltage of the battery is detected. Subsequently, after resuming the task running on the microprocessor, the remaining quantity of the battery is estimated based on the detected output voltage using a discharge characteristic of the battery.
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Citations
20 Claims
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1. A method for monitoring a battery in a battery-powered electronic apparatus having a microprocessor therein, the method comprising the steps of:
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a) stopping a task running on the microprocessor in response to a check timing signal; b) detecting an output voltage of the battery after the task is stopped running on the microprocessor; c) resuming the task running on the microprocessor after the output voltage has been detected; and d) monitoring a state of the battery based on the detected output voltage. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A system for monitoring a battery in a battery powered electronic apparatus having a microprocessor therein, the microprocessor having a function of stopping a task running thereon in response to a first signal, the system comprising:
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a signal generator for generating the first signal to output it to the microprocessor when checking an output voltage of the battery; a detector for detecting an output voltage of the battery to produce detected output voltage data after the task is stopped running on the microprocessor; and a monitor for monitoring a state of the battery based on the detected output voltage data. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. A portable data processing apparatus comprising:
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a battery as a power supply; a microprocessor for processing data in a multitasking environment, the microprocessor having a function of stopping a task running thereon in response to a first signal; a signal generator for generating the first signal to output it to the microprocessor when checking an output voltage of the battery; a detector for detecting an output voltage of the battery to produce detected output voltage data after the task is stopped running on the microprocessor; and a monitor for monitoring a state of the battery based on the detected output voltage data. - View Dependent Claims (20)
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Specification