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Bus connection device

A technology for connecting devices and buses, applied in the field of bus connection devices, and can solve the problems of not having

Inactive Publication Date: 2007-05-09
NXP BV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Personal computers usually have the hardware and software needed to allow them to act as USB hosts, but other items usually don't have the hardware and software needed to act only as USB devices

Method used

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Embodiment Construction

[0010] Figure 1 shows a system comprising an apparatus according to a first aspect of the invention. Device 10 takes the form of a hardware dongle capable of being connected to USB port 12 in USB device 14 .

[0011] In a system connected by a USB bus connection, one device is designated as a host and the other devices are designated as peripherals. One appliance must be enabled to act as a master in order to control communications with other devices. A device's ability to act as a USB host, or to act as a USB peripheral, is contingent on it having the appropriate functionality.

[0012] In this case, the device 14 is a USB device, ie it does not have functionality that allows it to act as a USB host. However, the purpose of hardware dongle 10 is to allow device 14 to act as a host, thus device 14 is described herein as a pseudo-host.

[0013] Device 10 , also referred to herein as a hostbridge, connects via port 16 to USB port 12 of pseudo-host 14 via conventional USB D+ / D...

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PUM

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Abstract

A bus connection device, in the form of a hardware dongle, can be connected to a first electronic device, in the form of a USB peripheral device, and a second electronic device can be connected thereto. The dongle can determine whether the second connected device is a USB host device or a USB peripheral device and, if the second electronic device is a USB host device, it is connected directly to the first electronic device. If the second electronic device is a USB peripheral device, the bus connection device operates to allow the first electronic device to operate as a host device. When the bus connection device is operating to allow the first electronic device to act as a USB host device, it regularly sends tokens to the first electronic device and to the second electronic device, to which the first electronic device can respond by transmitting data intended for the second electronic device, and to which the second electronic device can respond by transmitting data intended for the first electronic device.

Description

technical field [0001] The present invention relates to bus-connected devices, and more particularly to devices that can be used with electronic devices in a bus communication system to allow the device to act as a master in the system. Background technique [0002] Universal Serial Bus (USB) communication systems are becoming very common. In the USB system, many items of electronic devices, such as personal computers, scanners, mobile phones, printers, etc., can be interconnected. In any system, one device is always designated as the USB host, controlling connections to all other items designated as USB devices or peripherals. Personal computers usually have the hardware and software needed to allow them to act as USB hosts, but other items usually do not have the required hardware and software and thus can only act as USB devices. [0003] However, there are situations where it would be useful for a device to be able to act as a USB host where major changes to the device...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F13/40
CPCG06F13/4027G06F2213/0042G06F13/40G06F13/14
Inventor J·蒂亚
Owner NXP BV
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