UNIVERSAL SERIAL BUS (USB) HUB FOR SWITCHING DOWNSTREAM PORTS BETWEEN HOST MODE AND SLAVE MODE

摘要

Embodiment of present disclosure relates to a Universal Serial Bus (USB) hub for switching downstream ports between host mode and slave mode comprising upstream port connectable to host port of host, downstream port and switching module. The downstream port is connectable to device port of peripheral device and acts in host mode and said device port acts in slave mode. The switching module comprises master port, switching port and control unit. The master port is connectable to upstream port. The switching port is connectable to other end of downstream port, the switching port acts in host mode. The control unit receives switch command from host to switch downstream port from host mode to slave mode; switches switching port to slave mode and enables downstream port to act in the slave mode when host emulates functionality of slave mode as required by peripheral device using vendor specific USB class.

主权项

1. A Universal Serial Bus (USB) hub for switching downstream port between host mode and slave mode, the USB hub comprising:
an upstream port with one end connectable to a host port of a corresponding host; a downstream port with one end connectable to a device port of a peripheral device, wherein the downstream port acts in host mode and said device port acts in slave mode; a switching module comprising:
a master port connectable to other end of the upstream port;a switching port connectable to other end of the downstream port, wherein the switching port acts in host mode;a control unit configured to:
receive a switch command from the host to switch the downstream port from the host mode to a slave mode to enable the corresponding device port of the peripheral device to act in a host mode;switch the switching port from host mode to slave mode; andenable the downstream port to act in the slave mode when the host emulates functionality of slave mode as required by the peripheral device connected to the downstream port using a vendor specific USB class, wherein the device port of the peripheral device acts in the host mode upon enabling the at least one port of the at least one downstream port to act in the slave mode.