Power management system and method
First Claim
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1. A power management system for a computer system having one or more different components wherein power is dynamically supplied to each component, the power management system comprising:
- a clock generator circuit for generating one or more different clock signals wherein each clock signal has a different predetermined frequency;
a clock selector circuit that, based on the task being performed by the computer system, dynamically adjusts the clock signal supplied to each component of the computer system in order to reduce the total power being consumed by the computer system.
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Abstract
A power management system and method permit the total power consumption by a portable electronic device to be reduced so that the portable electronic device has a longer operating time on a limited power source, such as a battery. The system may also be used with devices that are powered by a more permanent source of power. The system may combine static power management techniques as well as dynamic power management techniques. The system may include a flexible clock generator.
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Citations
51 Claims
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1. A power management system for a computer system having one or more different components wherein power is dynamically supplied to each component, the power management system comprising:
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a clock generator circuit for generating one or more different clock signals wherein each clock signal has a different predetermined frequency;
a clock selector circuit that, based on the task being performed by the computer system, dynamically adjusts the clock signal supplied to each component of the computer system in order to reduce the total power being consumed by the computer system. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A power management method for a computer system having one or more different components wherein power is dynamically supplied to each component, the power management method comprising:
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simultaneously generating one or more different clock signals wherein each clock signal has a different predetermined frequency;
dynamically adjusts the clock signal supplied to each component of the computer system in order to reduce the total power being consumed by the computer system. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36)
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37. A flexible clock generator, comprising:
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a first oscillator that generates a first clock signal;
a second clock oscillator that generates a second clock signal;
a programmable clock circuit that generates a third clock signal based on the second clock signal; and
a clock select circuit that selects one of the first, second and third clock signal that is supplied to a portion of the computer system to provide that portion of the computer system with a predetermined clock signal. - View Dependent Claims (38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51)
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Specification