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Method for setting equipment power management state and equipment power consumption saving method

A technology of power management and power status, applied in the direction of data processing power, etc., can solve the problem of increasing energy consumption of computer systems

Active Publication Date: 2006-11-08
VIA TECH INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in most cases, the device has no work to process but waits for the processor to wake up, which undoubtedly increases the power consumption of the computer system

Method used

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  • Method for setting equipment power management state and equipment power consumption saving method
  • Method for setting equipment power management state and equipment power consumption saving method

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Embodiment Construction

[0017] According to (Advanced Configuration and Power interface; ACPI) technical specifications, the power management state of the central processing unit (CPU) includes: normal operation state C0 and sleep state C1, C2, C3, and C4. When the temperature of the CPU is too high, the CPU can enter the Throttling state C0t to reduce the power consumption of the CPU. ACPI also defines the power management states D0, D1, D2, and D3 of the device. D0 is the normal operating state, D3 is the power off state, and D1 and D2 are the customizable power-saving states. When the CPU enters the throttling state C0t or sleep state, the device can only wait for the CPU to wake up after completing its work. In a computer system platform that conforms to the ACPI power management standard, a power management unit (PMU) module that communicates with the CPU and the device controller circuit is usually provided in the South Bridge chipset. The PMU module can know that the CPU enters other power managem...

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Abstract

This invention provides a mehthod for designing supply management states of devices and reducing power consumption suitable for computer systems meeting the high level configuration and ACPI supply management standard including: providing a PMU module, which can get multiple different supply management states of the CPU of the computer system and designs related identification signals of the states based on the different supply management states, the system device can enter into different supply management states based on the identification signals so as to reduce power supply cost during the ordinary work.

Description

Technical field [0001] The present invention generally relates to a method for setting device power management status in a computer system and a method for saving device power consumption. More specifically, it relates to a computer system that complies with the Advanced Configuration and Power Interface (ACPI) power management standard according to the processor and The relationship between the device controllers is used to set the low-power state of the device and the method of saving power consumption of the device. Background technique [0002] The computer system is one of the most important hardware infrastructures in the modern information society. In addition to the pursuit of efficiency, modern computer systems must also pay attention to the reduction of energy consumption. Therefore, modern computer manufacturers also regard reducing energy consumption as one of the key points of computer system research and development. [0003] Advanced Configuration and Power Interfa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F1/32
Inventor 尹伟
Owner VIA TECH INC