Electrical computers and digital processing systems: support – Computer power control
Reexamination Certificate
2006-03-14
2009-11-03
Lee, Thomas (Department: 2115)
Electrical computers and digital processing systems: support
Computer power control
C702S060000, C710S305000
Reexamination Certificate
active
07613939
ABSTRACT:
A method and apparatus for changing power class for a powered device are provided. During operation, a powered device, such as an IP telephone, receives power from a power source via a PoE device. In the event that the powered device detects connection to a second powered device, such as an IP telephone module, the powered device transmits a classification signal to the power source. Based upon the classification signal, the power source performs a powered device classification procedure to reclassify the powered device, such as according to an IEEE 802.3af standard, and provide an increase amount of power to the powered device. The powered device, in turn, provides a portion of the power to the modular device. The modular powered device, therefore, receives power directly from the first powered device and does not require additional equipment in order to operate.
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Karam Roger
Thomas Robert
BainwoodHuang
Cisco Technology Inc.
Lee Thomas
Tran Vincent T
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