Device and method for detecting battery voltage level
First Claim
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1. A device for detecting a voltage level of a battery comprising:
- an analog-to-digital (A/D) converter for outputting a digital signal corresponding to an output voltage of the battery; and
a microprocessor, coupled to the A/D converter, for determining the voltage level of the battery according to the digital signal.
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Abstract
A device and an associated method for detecting a voltage level of a battery are disclosed. The device employs an analog-to-digital converter or digital-to-analog converter to accurately detecting the voltage level. In one embodiment, the device includes a digital-to-analog converter, a comparison circuit, and a microprocessor. The digital-to-analog circuit outputs a plurality of reference levels according to a setting signal. The comparison circuit is for comparing the output voltage of the battery with the reference levels and outputting a comparison signal. The microprocessor then determines the voltage level of the battery according to the comparison signal.
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Citations
20 Claims
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1. A device for detecting a voltage level of a battery comprising:
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an analog-to-digital (A/D) converter for outputting a digital signal corresponding to an output voltage of the battery; and a microprocessor, coupled to the A/D converter, for determining the voltage level of the battery according to the digital signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A device for detecting a voltage level of a battery comprising:
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a digital-to-analog (D/A) converter for outputting a plurality of reference levels according to a setting signal; a comparison circuit, coupled to the battery and the D/A converter, for comparing an output voltage of the battery with the reference levels and outputting a comparison signal; and a microprocessor, coupled to the comparison circuit, for determining a voltage level of the battery according to the comparison signal. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17)
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18. A method for detecting a voltage level of a battery comprising the steps of:
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outputting a plurality of reference levels according to a setting signal; comparing an output voltage of the battery with the reference levels to output a comparison signal; and determining the voltage level of the battery according to the comparison signal. - View Dependent Claims (19, 20)
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Specification