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Computer peripheral device that remains operable when central processor operations are suspended

A central processing unit and peripheral equipment technology, applied in the direction of data processing power supply, electrical digital data processing, digital data processing components, etc., can solve the problems of limited power waste and maintenance of mobile computers

Inactive Publication Date: 2009-04-29
SONY CORP OF AMERICA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, these Bluetooth-compliant transceivers will not be able to operate while the computer's CPU is asleep
However, keeping the CPU powered only to enable connectivity of Bluetooth-compliant devices is a waste of the limited power available for mobile computers

Method used

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  • Computer peripheral device that remains operable when central processor operations are suspended
  • Computer peripheral device that remains operable when central processor operations are suspended
  • Computer peripheral device that remains operable when central processor operations are suspended

Examples

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Embodiment Construction

[0048] Figure 2A Shows data flow between computer system components in a first operating state of the present invention. In this embodiment, the present invention provides peripheral device 234 with two or more operating states that may vary depending on the state of processing system 200 .

[0049] In one embodiment of the invention, processing system 200 is communicatively coupled to I / O hub 230 via hub bus 212 and acts as the default bus master for I / O hub 230 and peripherals 216, 218, and 234 The role of the device.

[0050] While processing system 200 acts as a default bus master, peripheral device 234 acts as a "slave." A “slave” mode is defined herein as a mode of operation in which a peripheral device 234 receives and / or sends information in dependence on the oversight of the processing system 200 . In slave mode, peripherals 234 behave as regular peripherals, while processing system 200 manages communications and / or messaging to computers and other peripherals thro...

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PUM

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Abstract

A peripheral device has a circuit for detecting the power management status of a central processor, a first interface for receiving data, and a second interface for coupling the peripheral device to the central processor. If the central processor is in the second power management state, the peripheral device prevents the transfer of data that would cause the central processor to change from the second power management state to the first power management state.

Description

technical field [0001] The present invention relates generally to a method and apparatus for allowing a computer system to receive information while the CPU is asleep, and more particularly, to a peripheral device having multiple modes of operation that facilitate Or receive and buffer data while in pending state. Background technique [0002] Power management has become increasingly important as mobile computing devices seek to extend operating time between battery charges. One way to implement power management is to completely or partially shut down computer components such as the central processing unit (CPU), hard drive, display, and other input / output (I / O) devices when the computer is not performing operations. [0003] During some of these power management modes, also known as sleep states, the computer's CPU may stop communicating with and controlling its peripheral resources, including I / O components, and those resources may not be accessible by any other computer ...

Claims

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Application Information

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IPC IPC(8): G06F1/32G06F13/40
CPCG06F1/3215G06F13/4022
Inventor F·哈特S·斯里坦亚拉坦D·波尔曼L·克林
Owner SONY CORP OF AMERICA
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