Method of controlling power by a power controller controlling a power switch of an unused communication interface
First Claim
1. A communication device comprising:
- a bus of a predetermined standard;
a power source connected to said bus;
a plurality of communication interfaces connected to said bus to communicate data with the other communication device, each of said communication interfaces comprisinga power switch for switching an electrical ON and OFF states with said power source, anda power controller for controlling the ON and OFF states of said power switch based on a predetermined control signal supplied through said bus; and
a processor connected to said bus, said processor comprisingdetecting means for detecting unused one of the plurality of communication interfaces, andcontrolling means for, when said unused communication interface is detected by said detecting means, supplying a control signal to said power controller of said unused communication interface, thereby switching the ON state of said power switch to the OFF state thereof through said bus.
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Accused Products
Abstract
The wireless LAN access point comprises a CPU, a PCI bus connected to the CPU, a power source section 18 connected to the PCI bus, a wireless LAN interface 16, and a wire LAN interface. Each of the communication interfaces comprises a power switch which can switch ON/OFF an electrification state with the power source section, and a power control device which controls an ON/OFF operation of the power switch based on a control signal from the CPU. The CPU detects unused one of the communication interfaces and supplies a control signal to switch an ON state of the power switch to an OFF state through the PCI bus to the power control device of the unused communication interface. A reduction in size of a power source section to miniaturize a wireless LAN access point, and power/energy saving are achieved.
28 Citations
14 Claims
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1. A communication device comprising:
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a bus of a predetermined standard; a power source connected to said bus; a plurality of communication interfaces connected to said bus to communicate data with the other communication device, each of said communication interfaces comprising a power switch for switching an electrical ON and OFF states with said power source, and a power controller for controlling the ON and OFF states of said power switch based on a predetermined control signal supplied through said bus; and a processor connected to said bus, said processor comprising detecting means for detecting unused one of the plurality of communication interfaces, and controlling means for, when said unused communication interface is detected by said detecting means, supplying a control signal to said power controller of said unused communication interface, thereby switching the ON state of said power switch to the OFF state thereof through said bus. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A wireless LAN access point comprising:
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a bus of a predetermined standard; a power source connected to said bus; a plurality of communication interfaces including a wire LAN interface connected to said bus and a wireless LAN interface connected to said bus, said plurality of communication interfaces which are connected to said bus to communicate data with the other communication device, each of said communication interfaces comprising a power switch for switching an electrical ON and OFF states with said power source, and a power controller for controlling the ON and OFF states of said power switch based on a predetermined control signal supplied through said bus; and a processor connected to said bus, said processor comprising detecting means for detecting unused one of the plurality of communication interfaces, and controlling means for, when said unused communication interface is detected by said detecting means, supplying a control signal to the OFF state thereof through said bus to said power controller of said unused communication interface, thereby switching the ON state of said power switch. - View Dependent Claims (12, 13)
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14. A communication device comprising:
- a bus;
a power source connected to said bus; a plurality of communication interfaces connected to said bus, each of said communication interfaces comprising; a power switch; and a power controller for controlling ON and OFF states of said power switch based on a control signal supplied through said bus; and a processor connected to said bus, said processor comprising; a detector which detects at least one unused one of the plurality of communication interfaces; and a controller which supplies a control signal through said bus to said power controller of said unused communication interface thereby switching the ON state of said power switch to the OFF state thereof when said unused communication interface is detected by said detector.
- a bus;
Specification