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Electronic data communication method, device and system

A technology of electronic data and communication methods, applied in the direction of electrical digital data processing, digital data processing components, sustainable communication technology, etc., can solve problems such as excessive timing requirements, unfavorable connectivity, limited power management, etc.

Active Publication Date: 2012-07-04
INTEL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The timing requirements for suspend and resume operations specified in USB 2.0 may limit the power management of some systems with USB
For other systems, especially those that draw power primarily from the battery, the timing requirements for suspend and resume operations may be prohibitive, making USB, as specified in USB 2.0, an unfavorable choice for connectivity in some of these systems

Method used

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  • Electronic data communication method, device and system
  • Electronic data communication method, device and system
  • Electronic data communication method, device and system

Examples

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Embodiment Construction

[0039] figure 1 An apparatus with a USB device according to one embodiment of the invention is shown. The device 100 includes a system host controller 101 , USB devices 110 , 120 and a power supply 130 . USB ports 111, 122 and USB segments 140 allow USB devices 110, 120 to communicate with each other. Each of the USB ports 111 and 122 includes a transmitter and a receiver for sending and receiving data. According to the USB 2.0 specification, the USB segment 140 includes the power line (V BUS ), ground wire (GND) and data wire (D+ and D-). The power supply 130 supplies power to the device 100 . In some embodiments, power source 130 includes a battery. The system master controller 101 includes any combination of hardware, firmware, and software to control the operation of the device 100 . System master controller 101 may include a general purpose processor or an application specific integrated circuit (ASIC). The USB device 110 may be a USB host controller that allows th...

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PUM

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Abstract

Some embodiments of the invention include apparatus, systems, and methods to perform universal serial bus (USB) suspend and resume operations based on active communication between USB devices to improve power management. Other embodiments are described and claimed.

Description

[0001] related application [0002] This patent application claims priority to US Application No. 11 / 170771, filed June 29, 2005, which is hereby incorporated by reference. technical field [0003] Embodiments of the present invention relate to electronic data communications, and more particularly to suspend and resume operations in the USB protocol. Background technique [0004] USB is a type of connection that allows data transfer between electrical systems or devices. The Universal Serial Bus Design Forum (USB-IF) in Portland, Oregon manages and publishes USB specifications. Several revisions of the USB specification have been published by the USB-IF. As of this writing, USB 2.0, released on April 27, 2000, is the latest USB specification revision and is compatible with earlier USB specification revisions such as USB 1.0 and USB 1.1. In the descriptions described herein, USB 2.0 refers to the USB 2.0 specification revision published by the USB-IF and all other earlier ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F13/42
CPCG06F13/426G06F1/3253Y02B60/1235G06F1/3203G06F1/325Y02D10/00Y02D30/50
Inventor J·S·霍沃德
Owner INTEL CORP