Power management system
First Claim
1. A power management system for electrical and electronic apparatus having a number of components which may be switched to a low power state, comprising a power controller coupled to each component in the electrical or electronic apparatus and a plurality of power modules, each associated with a component, wherein each power module is coupled to the power controller for each component its associated component makes use of, and sends signals to that power controller indicating whether or not its associated component wishes to make use of the component coupled to that power controller, and the power controller switches its component to a low or high power state in dependence on received signals.
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Abstract
A power management system for electrical and electronic apparatus has a number of components which may be switched to a low power state. A power controller (20) is coupled to each component in the apparatus and a plurality of power modules (22, 24, 26) are each associated with a component. Each power module is coupled to the power controller for each component its associated component makes use of. It sends signals to that power controller indicating whether or not its associated component wishes to make use of the component coupled to that power controller. The power controller switches its component to a low or high power state in dependence on the received signals.
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Citations
19 Claims
- 1. A power management system for electrical and electronic apparatus having a number of components which may be switched to a low power state, comprising a power controller coupled to each component in the electrical or electronic apparatus and a plurality of power modules, each associated with a component, wherein each power module is coupled to the power controller for each component its associated component makes use of, and sends signals to that power controller indicating whether or not its associated component wishes to make use of the component coupled to that power controller, and the power controller switches its component to a low or high power state in dependence on received signals.
- 8. A power controller for managing the power supplied to an article of electrical or electronic apparatus comprising means for switching between a low power and a high power state, means for receiving signals from other components which wish to communicate with the article of electrical or electronic apparatus, means for monitoring the status of these signals, wherein the means for switching between the low power and the high power state does so in dependence on the received signals.
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9. A method for managing power supply to an article of electrical and electronic apparatus comprising the steps of receiving signals from other components that wish to communicate with the article of electrical and electronic apparatus, monitoring the status of these received signals, and switching the article of electrical and electronic apparatus between a low power and a high power state, in dependence on the status of the received signals.
Specification