Power control circuit of at least one computer expansion slot
First Claim
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1. A power control circuit for controlling power provided to expansion slots for a computer system comprising:
- a power source;
a plurality of expansion slots, attached to the computer system; and
latching means for receiving and storing data from the computer system and outputting a plurality of control signals corresponding to the data received, each of the plurality of control signals indicating a power-off state or a power-on state for a corresponding expansion slot of the plurality of expansion slots;
a power controller, connected between the power source and the plurality of expansion slots and controlled by the plurality of control signals,wherein the power controller connects a chosen expansion slot of the plurality of expansion slots to the power source when a corresponding control signal of the plurality of control signals indicates a power-on state, and disconnects the chosen expansion slot of the plurality of expansion slots from the power source when the corresponding control signal of the plurality of control signals indicates a power-off state.
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Abstract
A power control circuit for at least one expansion slot has a latching means for receiving and storing data from the system and a means for outputting a signal corresponding to the data provided by a control signal, a power controller for receiving the control signal from the latching means and for outputting a control power on or power off signal corresponding to the signal from the latching means and at least one expansion slot for which the power is supplied or denied according to the on or off signal from the power controller.
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Citations
6 Claims
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1. A power control circuit for controlling power provided to expansion slots for a computer system comprising:
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a power source; a plurality of expansion slots, attached to the computer system; and latching means for receiving and storing data from the computer system and outputting a plurality of control signals corresponding to the data received, each of the plurality of control signals indicating a power-off state or a power-on state for a corresponding expansion slot of the plurality of expansion slots; a power controller, connected between the power source and the plurality of expansion slots and controlled by the plurality of control signals, wherein the power controller connects a chosen expansion slot of the plurality of expansion slots to the power source when a corresponding control signal of the plurality of control signals indicates a power-on state, and disconnects the chosen expansion slot of the plurality of expansion slots from the power source when the corresponding control signal of the plurality of control signals indicates a power-off state. - View Dependent Claims (2, 3)
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4. A method for controlling power to a plurality of expansion slots of a computer system, the method comprising the steps of:
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receiving and storing data from the computer system in a latching means; outputting a plurality of control signals corresponding to the data received by the latching means; receiving the plurality of control signals at a power controller, from the latching means, each of the plurality of control signals indicating a power-on or a power-off state for a corresponding expansion slot; enabling the supply of a power source voltage to a first set of the plurality of expansion slots corresponding to those of the plurality of control signals that indicate a power-on state; and disabling the supply of the power source voltage to a second set of the plurality of expansion slots corresponding to those of the plurality of control signals that indicate a power-off state. - View Dependent Claims (5, 6)
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Specification