ELECTRONIC DEVICE, AND CAPACITOR CAPACITANCE DETECTION METHOD APPLIED TO THE SAME
First Claim
1. An electronic device comprising:
- a capacitor configured for use as a backup power supply;
a power supply configured to charge the capacitor;
a discharger configured to discharge the capacitor; and
a capacitance detector configured tomaintain a terminal voltage of the capacitor for a first time, by controlling an operating time of the power supply,allow the discharger to start the discharge after the first time elapses, anddetect a capacitance of the capacitor based on a transient response characteristic of the discharge.
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Accused Products
Abstract
According to one embodiment, an electronic device includes a capacitor, a power supply device, a discharger and a capacitance detector. The capacitor is used as a backup power supply. The power supply device charges the capacitor. The discharger discharges the capacitor. The capacitance detector maintains a terminal voltage of the capacitor at a given level for a predetermined time, by controlling an operating time of the power supply device. The capacitance detector allows the discharger to start the discharge the predetermined time later. The capacitance detector detects a capacitance of the capacitor based on a transient response characteristic of the discharge.
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Citations
18 Claims
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1. An electronic device comprising:
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a capacitor configured for use as a backup power supply; a power supply configured to charge the capacitor; a discharger configured to discharge the capacitor; and a capacitance detector configured to maintain a terminal voltage of the capacitor for a first time, by controlling an operating time of the power supply, allow the discharger to start the discharge after the first time elapses, and detect a capacitance of the capacitor based on a transient response characteristic of the discharge. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for detecting a capacitance of a capacitor configured for use as a backup power supply in an electronic device comprising the capacitor, a power supply configured to charge the capacitor, and a discharger configured to discharge the capacitor, wherein the method comprises:
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maintaining a terminal voltage of the capacitor for a first time by controlling an operating time of the power supply; allowing the discharger to start the discharge after the first time elapses; and detecting a capacitance of the capacitor based on a transient response characteristic of the discharge. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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Specification