System and method for conserving power within a backup battery device
First Claim
1. A system for conserving power within a backup battery, comprising:
- a main battery for generating a main operating voltage and a secondary operating voltage;
a switching device for connecting said main operating voltage to a secondary power bus which powers a memory device; and
a power manager for sensing when said main battery drops to a first threshold voltage, whereupon said power manager connects said secondary operating voltage to said secondary power bus only if said memory device contains data, and disconnects said main operating voltage from said secondary power bus;
said backup battery generating said secondary operating voltage when said power manager senses that said main battery has reached a second threshold voltage.
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Accused Products
Abstract
A system and method for conserving power within a backup battery device comprises a main battery for generating a main operating voltage and a secondary operating voltage, a switching device for connecting the main operating voltage to a secondary power bus which powers a memory device, and a power manager for sensing whenever the main battery drops to a first threshold voltage, whereupon the power manager connects the secondary operating voltage to the secondary power bus if the memory device contains data, and disconnects the main operating voltage from the secondary power bus. The backup battery generates the secondary operating voltage whenever the power manager senses that the main battery has reached a second threshold voltage.
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Citations
20 Claims
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1. A system for conserving power within a backup battery, comprising:
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a main battery for generating a main operating voltage and a secondary operating voltage; a switching device for connecting said main operating voltage to a secondary power bus which powers a memory device; and a power manager for sensing when said main battery drops to a first threshold voltage, whereupon said power manager connects said secondary operating voltage to said secondary power bus only if said memory device contains data, and disconnects said main operating voltage from said secondary power bus; said backup battery generating said secondary operating voltage when said power manager senses that said main battery has reached a second threshold voltage. - View Dependent Claims (2, 3, 4, 5)
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6. A method for conserving power within a backup battery, comprising the steps of:
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generating a main operating voltage and a secondary operating voltage using a main battery; connecting said main operating voltage to a secondary power bus which powers a memory device; sensing when said main battery drops to a first threshold voltage, whereupon a power manager connects said secondary operating voltage to said secondary power bus only if said memory device contains data, and disconnects said main operating voltage from said secondary power bus; and generating said secondary operating voltage with said backup battery when said power manager senses that said main battery has reached a second threshold voltage. - View Dependent Claims (7, 8, 9, 10)
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11. A computer-readable medium comprising program instructions for conserving power in a backup battery by performing the steps of:
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generating a main operating voltage and a secondary operating voltage using a main battery; connecting said main operating voltage to a secondary power bus which powers a memory device; sensing when said main battery drops to a first threshold voltage, whereupon a power manager connects said secondary operating voltage to said secondary power bus if said memory device contains data, and disconnects said main operating voltage from said secondary power bus; and generating said secondary operating voltage with said backup battery when said power manager senses that said main battery has reached a second threshold voltage. - View Dependent Claims (12, 13, 14, 15)
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16. A system for conserving power within a backup battery, comprising:
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means for generating a main operating voltage and a secondary operating voltage using a main battery; means for connecting said main operating voltage to a secondary power bus which powers a memory device; means for sensing when said main battery drops to a first threshold voltage, whereupon said means for sensing connects said secondary operating voltage to said secondary power bus only if said memory device contains data, and disconnects said main operating voltage from said secondary power bus; and means for generating said secondary operating voltage with said backup battery when said means for sensing senses that said main battery has reached a second threshold voltage. - View Dependent Claims (17, 18, 19, 20)
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Specification