Method for accessing battery state by operation system of portable computer

A technology of operating system and battery status, which is applied in the direction of data processing power supply, etc., and can solve problems such as screen freezes

Inactive Publication Date: 2009-05-20
GETAC TECH CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the execution speed of the keyboard controller is a relatively slow device, when the central processing unit is busy (such as playing Win DVD), the operating system regularly reads the battery status in the keyboard controller. When the CPU is too busy, it may cause the picture to freeze

Method used

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  • Method for accessing battery state by operation system of portable computer
  • Method for accessing battery state by operation system of portable computer

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Embodiment Construction

[0019] refer to figure 1 As shown, it is a schematic diagram showing the connection of the relevant systems that cooperate with the control flow of the present invention, and it shows the connection between the central processing unit 11 in the portable computer 1, the basic input / output system 12 (SYS-BIOS) and the keyboard controller 2 Connection diagram. The keyboard controller 2 includes a keyboard built-in microprocessor 21 , a keyboard basic input / output system 22 (KB-BIOS), a memory 23 , and a battery status detection interface 24 .

[0020] The portable computer 1 is connected with various hardware devices (such as including a floppy disk drive, a hard disk, a CD drive, a PCMCIA port, a display, etc.). The hardware devices connected to the keyboard controller 2 include, for example, a battery, a temperature sensor, a keyboard, a mouse, and other devices. The keyboard controller 2 is connected to the central processing unit 11 of the portable computer 1 by a bus 13 (s...

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PUM

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Abstract

A method for fetching the battery state by the operation system of a portable computer is that the operation system fetches its present system time first, then to be compared with the battery state time fetched last time again to compare the difference value of the said fetch time with a primary value of predesigned fetch time when the said portable computer fetches the battery state information by the key board controller definitely. When the difference value is larger than or equal to the primary value, the operation system fetches the battery state information instantly to be stored in a memory and feeds back the information to the operation system, if the value is smaller, the system feeds back the value stored in the memory to the system directly.

Description

technical field [0001] The invention relates to a method for reading battery status, in particular to a method for reading battery status by an operating system of a portable computer, so as to save system resources of the central processing unit of the portable computer. Background technique [0002] In the currently widely used Windows operating system (such as Windows XP, Windows 2000), the power management function of the advanced architecture power interface standard ACPI (Advanced Configuration and Power Interface) has been generally integrated in its operating system. Controls the power management operations of all hardware, from laptops to desktops and servers, covered by this specification. [0003] The advanced architecture power interface standard ACPI (Advanced Configuration and Power Interface) is a power management system interface jointly formulated and developed by the computer industry. Its purpose is to have a common power management interface between the o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F1/32G06F1/28
Inventor 童友志
Owner GETAC TECH CORP
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