Information processing device and method for controlling power consumption thereof
DC CAFC
First Claim
Patent Images
1. An information processing device comprising:
- at least two function devices equipped with independent functions; and
a power supply circuit for supplying power to each of said function devices, said power supply circuit including a battery, a capacity detector for detecting a remaining capacity of said battery, and a controller for controlling operation of said function devices based on said remaining capacity;
wherein when said capacity detector detects remaining battery capacities NA and NB (where NA>
NB), said controller sends a power consumption reduction instruction to each function device included in a set GA if NA is detected, each function device of the set GA having a lower usage priority, and to each function device of a set GB if NB is detected, each function device of set GB is not included in said set GA.
6 Assignments
Litigations
2 Petitions
Accused Products
Abstract
A power supply section includes a capacity detector capable of detecting the remaining capacity in a battery and a controller issuing power consumption reduction instructions to independently operable function devices based on usage priorities thereof. This allows power consumption operations to be performed such as stopping function devices with low priorities first based on the remaining battery capacity. As a result, power to function devices with higher priorities can be maintained. Based on the remaining battery capacity, the controller controls the operations of the function devices and uses a display to show information allowing the operator to identify operable and inoperable function devices as the battery capacity drops.
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Citations
14 Claims
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1. An information processing device comprising:
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at least two function devices equipped with independent functions; and
a power supply circuit for supplying power to each of said function devices, said power supply circuit including a battery, a capacity detector for detecting a remaining capacity of said battery, and a controller for controlling operation of said function devices based on said remaining capacity;
wherein when said capacity detector detects remaining battery capacities NA and NB (where NA>
NB), said controller sends a power consumption reduction instruction to each function device included in a set GA if NA is detected, each function device of the set GA having a lower usage priority, and to each function device of a set GB if NB is detected, each function device of set GB is not included in said set GA.- View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An information processing device comprising:
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component devices for performing different functions in the device, each of said component devices having a corresponding power supply;
a battery supplying power;
a capacity detector detecting a remaining battery capacity of said battery;
a controller sending a first power consumption reduction instruction to a portion of said component devices having a lower usage priority when said capacity detector detects a first reference level, and sending a second power consumption reduction instruction to another portion of said component devices having a higher usage priority when said capacity detector detects a second reference level, said second reference level is lower than said first reference level; and
wherein the power supplies of said component devices are controlled according to said first power consumption reduction instruction and said second power consumption reduction instruction. - View Dependent Claims (10, 11, 12, 13, 14)
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Specification
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Litigation Data
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Current AssigneeMaxell, Ltd.
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Original AssigneeHitachi, Ltd.
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InventorsMori, Naoki, Oeda, Shigeto, Ito, Hiromichi
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Primary Examiner(s)Wong, Peter S.
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Assistant Examiner(s)LUK, LAWRENCE W
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Application NumberUS09/657,151Time in Patent Office460 DaysField of Search320/132, 320/134, 320/139, 320/130, 324/426, 324/428US Class Current320/132CPC Class CodesH02J 1/14 Balancing the load in a net...H02J 7/0048 Detection of remaining char...H02J 7/0063 with circuits adapted for s...H02J 7/00712 the cycle being controlled ...
