Interface extension device compatible with USB 2.0 and USB 3.0 standards

摘要

An interface extension device includes a USB port, a USB hub and a first interface conversion circuit. The USB hub has a first port connected to the USB port. The first interface conversion circuit includes first and second USB hosts. The first USB host is connected to the USB hub and is connected to the USB port through the USB hub. The second host has a bus and is directly connected to the USB port without routing though any USB hub.

主权项

1. An interface extension device, comprising:
a USB port; a USB hub, having a first port connected to the USB port; and a first interface conversion circuit, comprising:
a first USB host, connected to the USB hub and connected to the USB port through the USB hub; anda second USB host, having a bus and being directly connected to the USB port without routing through any USB hub, wherein the USB port comprises a first set of pins and a second set of pins, and the first set of pins and the second set of pins are arranged to connect to a connector compatible with USB 2.0 and a connector compatible with USB 3.0, respectively, and the USB hub is a USB 2.0 hub, wherein when an external device is connected to the USB port through the connector compatible with USB 3.0, the second USB host directly connects to the external device through the bus and the second set of pins of the USB port rather than any USB hub and communicates with the external device, wherein the USB hub further comprises a second port connected to a second interface conversion circuit, and configured to convert a USB signal from the first USB host to a network package, and convert the network package to the USB signal; wherein the first USB host communicates with the external device through the USB hub and the first set of pins of the USB port, when the external device is connected to the USB port through the connector compatible with USB 2.0.