USB Type-C interface conversion module and system and connection method

Abstract

Embodiments of the invention disclose a USB Type-C interface conversion module and system and a transmission connection establishing method. A data signal and a clock signal of a DDC of an HDMI source end are directly output through a crossbar switch, so that the communication with upstream and downstream HDMI equipment can be realized through a direct connection manner, and the instantaneity and reliability of DDC communication are improved; and through intersection, the transmission channel exchange of the data signal and the clock signal of the DDC is realized, and the matching of a port when the insertion direction of the port is different from the insertion direction of a USB Type-C interface is realized. Moreover, through the USB Type-C interface conversion system, conversion of other videos is not required, so that transmission between traditional HDMI equipment can be realized, and higher transmission speed and stronger transmission ability are provided.

Description

technical field [0001] The invention relates to the field of video data transmission, in particular to a USB Type-C interface conversion module, a system and a method for establishing a transmission connection. Background technique [0002] With the rapid development of electronic technology, the functions of electronic equipment are also continuously increasing. By customizing various interfaces on the electronic equipment, it is convenient to connect with other equipment. [0003] The USB Type-C interface has the characteristics of faster transmission speed, stronger power transmission capability, and support for double-sided plugging. It is currently a mainstream choice for electronic device interfaces. More and more electronic devices are equipped with USB Type-C interface. For a long period of time, video transmission will still be dominated by HDMI (High Definition Multimedia Interface, high-definition multimedia interface), and the interface conversion between tradit...

AI Technical Summary

Problems solved by technology

[0004] At present, the interface conversion between HDMI and USB Type-C is carried out on a single end, which is to convert the HDMI source signal into a USB Type-C interface signal at the signal source, while the signal receiving end is still an HDMI interface, and at the source end. conversion is going to be based on the I 2 The DDC (Display Data Channel, display data channel) communication of the C (IIC, Inter-Integrated Circuit) protocol is converted into CC communication based on the USB-PD protocol, and the communication mechanism of the HDMI encrypted signal has the characteristics of real-time and short data validity time , there will be problems of communication failure and poor transmission reliability

With the continuous development of video applications, many applications have continuously improved requirements for video transmission speed and display quality, such as VR (Virtual Reality, virtual reality) technology. At the display end, that is, the signal receiving end, the power supply carried by the traditional HDMI interface The current is limited and cannot bring good interactive performance to the user

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