Information processing apparatus having electronic device whose operating speed is controlled, and method of controlling the operating speed of the electronic device

A technology of information processing equipment and operating speed, which is applied in the direction of data processing power supply, electrical digital data processing, digital data processing parts, etc., and can solve problems such as unstable operation of the device

Inactive Publication Date: 2007-07-04
KK TOSHIBA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the reduction of the power supply voltage may cause the operation of each device (that is, the operation of the entire information processing equipment) to be unstable.

Method used

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  • Information processing apparatus having electronic device whose operating speed is controlled, and method of controlling the operating speed of the electronic device
  • Information processing apparatus having electronic device whose operating speed is controlled, and method of controlling the operating speed of the electronic device
  • Information processing apparatus having electronic device whose operating speed is controlled, and method of controlling the operating speed of the electronic device

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Embodiment Construction

[0013] Various embodiments of the present invention will be described below with reference to the accompanying drawings. First, the system configuration of the information processing device of the embodiment of the present invention will be described with reference to FIG. 1 . This information processing apparatus is implemented as, for example, a battery-powered notebook personal computer 10 .

[0014] As shown in FIG. 1 , the computer 10 includes a CPU 111 , a north bridge 112 , a main memory 113 , a graphics controller 114 and a south bridge 115 . Also, the computer 10 includes a BIOS-ROM 120, a hard disk drive (HDD) 130, an optical disk drive (ODD) 140, PCI devices 151, 152, and 153, an embedded controller / keyboard controller IC (EC / KBC) 160, and a power supply circuit 170.

[0015] The CPU 111 is a processor that controls the operation of the computer 10 . The CPU 111 executes an operating system (OS) loaded into the main memory 113 from a boot device. In this embodim...

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Abstract

A power supply circuit generates a power supply voltage. The power supply voltage is applied to an electronic device. A voltage monitoring unit monitors a power supply voltage that is applied to the electronic device, and makes a request to a bus control unit to switch the operating speed of the electronic device in accordance with the power supply voltage such that the operating speed of the electronic device becomes lower as the power supply voltage drops. The bus control nit switches the transfer speed of a bus at the request of the voltage monitoring unit to switch the operating speed of the electronic device.

Description

technical field [0001] An embodiment of the present invention relates to an information processing apparatus having an electronic device whose operating speed is controlled, and an electronic device operating speed control method. Background technique [0002] It is known that the transfer speed of a bus connected to an input / output device included in an information processing apparatus such as a personal computer must be increased to increase the operating speed of the input / output device. It is also known that the frequency (core frequency) of a clock (core clock) used inside a processor (CPU) included in the information processing apparatus must be increased to increase the operating speed of the processor. Processor (CPU) core frequency will also be referred to as core frequency below. [0003] It is also known that as the operating speed of electronic devices such as input / output devices and processors increases, their power consumption...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F1/28G06F1/32
CPCG06F1/324G06F1/3296G06F1/3203Y02B60/1285Y02B60/1217Y02B60/1292Y02D10/00
Inventor 落合隆行
Owner KK TOSHIBA
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