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Universal Serial Bus devices supporting super speed and non-super speed connections for communication with a host device and methods using the same

a technology of universal serial bus and host device, which is applied in the direction of electric digital data processing, instruments, computing, etc., can solve the problems of increasing hardware cost and design complexity of the usb system

Active Publication Date: 2015-01-06
MEDIATEK INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Implementation of the hub device, however, can increase the hardware cost and design complexity for the USB system.

Method used

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Embodiment Construction

[0015]The following description is of the best-contemplated mode of carrying out the invention. This description is made for the purpose of illustrating the general principles of the invention and should not be taken in a limiting sense. The scope of the invention is best determined by reference to the appended claims.

[0016]FIG. 1 is a schematic diagram illustrating an embodiment of an USB system of the invention. The USB system 10 of the invention at least comprises a USB device 100 and a host device 200. For example, the USB device 100 may be a portable USB device and the host device 200 may be a computer system, but it is not limited thereto. The USB device 100 may communicate with the host device 200 through a super speed connection or non-super speed connection. It is understood that, the non-super speed may comprise at least one of USB low-speed (LS), high-speed (HS) and full-speed (FS).

[0017]The USB device 100 may support both the super speed and non-super speed connections f...

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PUM

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Abstract

Universal Serial Bus (USB) devices supporting super speed and non-super speed connections for communication with a host device includes a plurality of endpoints (EPs), a non-super speed connection port, a super speed connection port and a configuration unit. The non-super speed connection port and the super speed connection port are connected to the host device. The configuration unit is arranged for dividing the EPs to first and second groups of EPs according to a bandwidth requirement, determining whether a super speed connection with the host device is successfully established and configuring the first group of EPs to operate at a super speed and configuring the second group of EPs to operate at a non-super speed when the super speed connection with the host device is successfully established such that the USB device communicates with the host device at both the super speed and the non-super speed.

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The disclosure relates generally to Universal Serial Bus (USB) devices, and, more particularly to USB devices supporting super speed and non-super speed connections for communication with a host device and related methods.[0003]2. Description of the Related Art[0004]With vigorous development of computers and communications industry, a special interface system standard called “Universal Serial Bus” (USB) is established for communication connection. USB is a serial bus standard for external apparatus connection, providing hot plug, plug and play and other related functions. Currently, the USB 2.0 standard provides three transfer rates: low-speed (LS), full-speed (FS), and high-speed (HS) transfer rates, which support: 1.5 Mbps; 12 Mbps; and 480 Mbps data rates, respectively. However, due to continued advanced technological development, the electronic apparatuses may require to quickly access data from external apparatuses...

Claims

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Application Information

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Patent Type & Authority Patents(United States)
IPC IPC(8): G06F3/00G06F13/38
CPCG06F13/385
Inventor CHIEN, YI-WEN
Owner MEDIATEK INC