A Device for Prolonging the Transmission Distance of Universal Serial Bus

Abstract

Provided is a device for extending the universal serial bus transmission distance. The device comprises a transmitting end device (3), a receiving end device (4) and a cable (5). The transmitting end device (3) and the receiving end device (4) each comprise a USB reception processing unit (1000), a USB transmission processing unit (2000), a USB interface unit (3000), an extension cable transmission processing unit (4000), an extension cable interface unit (6000) and an extension cable reception processing unit (5000). The cable is formed in a long-distance mode. A management package of the device transmits status information between the transmitting end device (3) and the receiving end device (4). One or two channels are selected for communication in the device. In the device, by means of data format conversion, USB-format data that needs to be transmitted is converted into a format suitable for transmission in the long-distance cable at the transmitting end, and the USB-format data is recovered through inverse conversion at the receiving end, so that the transmission distance is extended.

Description

technical field [0001] The invention relates to a device for extending the transmission distance of a universal serial bus, in particular to a technology for transmitting USB2.0 data with a long-distance cable between a USB2.0 host and a USB2.0 device to increase the transmission distance of the USB2.0. Background technique [0002] The English of the Universal Serial Bus is UniversalSerialBus, abbreviated as USB. It is an interface technology widely used in the PC field. The application peripherals can be connected to the personal computer with the same standard through USB, including USB hard disk, USB optical drive, USB mouse, USB keyboard, USB printer, USB sound card, USB network card, USB camera, USB video collector, USB Ethernet adapter Etc., the USB interface of prior art includes USB1.1, USB2.0 and USB3.0 / USB3.1 that appear in recent years, the transmission speed of USB1.1 can reach 12 megabits per second in theory, and USB2.0 is It can reach a speed of 480 megabits...

AI Technical Summary

Problems solved by technology

[0002] The English of the Universal Serial Bus is UniversalSerialBus, abbreviated as USB. It is an interface technology widely used in the PC field. The application peripherals can be connected to the personal computer with the same standard through USB, including USB hard disk, USB optical drive, USB mouse, USB keyboard, USB printer, USB sound card, USB network card, USB camera, USB video collector, USB Ethernet adapter Etc., the USB interface of prior art includes USB1.1, USB2.0 and USB3.0 / USB3.1 that appear in recent years, the transmission speed of USB1.1 can reach 12 megabits per second in theory, and USB2.0 is It can reach a speed of 480 megabits per second, and can be backward compatible with USB1.1; among the three USB interfaces, USB2.0 is currently the most widely used, and the sending device and receiving device are USB2. 0 Host and USB2.0 device, sending device and receiving device are connected by USB2.0 cable, when transmitting USB2.0 signal through USB2.0 cable, due to signal attenuation, the maximum value of USB2.0 cable The length is only 5 meters. At the same time, although the sending device and the receiving device can be connected by a USB2.0 hub, but at most a level 5 hub can be used, so the limitation of the use distance greatly restricts the application of USB2.0

Images