High-definition audio and video mixing cascade digital transmission switcher

Abstract

The invention relates to an audio and video mixing transmission switcher which is used for transmitting audio and video signals of a plurality of signal sources to an audio device and a video device. The audio and video mixing transmission switcher is characterized by comprising at least one transmitter and a receiver, each transmitter is connected with each signal source and used for receiving the audio and video signals of the signal sources, the transmitters are mutually connected to transmit the audio and video signals of the signal sources, HDMI (high definition multimedia interface) signals are outputted after VGA (video graphics array) signals are converted into the HDMI signals, an input end of the receiver is connected with one transmitter, and an output end of the receiver is respectively connected with the audio device and the video device. By the aid of the technical scheme, the audio and video mixing transmission switcher cannot be limited by the number of speechmakers and can effectively solve the problems of line loss and the like due to repeated retransmission and long-distance network cable transmission, the audio and video signals are remotely transmitted, so that the audio device and the video device can play to meet the requirements of a video conference, a system is simple, and operation is facilitated.

Description

technical field [0001] The invention relates to a switcher, in particular to a high-definition audio and video hybrid cascade digital transmission switcher for discussion / video conference. Background technique [0002] The matrix switcher is used to transmit one or more video and audio signals to one or more display devices and audio devices so that the output channels can be switched arbitrarily. The video output signal of the matrix switcher can be connected with video equipment such as projectors and televisions, and the audio output signal of the matrix switcher can be connected with audio equipment such as speakers. [0003] According to the type of signal source, matrix switchers can be divided into VGA, HDMI, AV, VIDEO, DVI matrix switchers, etc. For example: a VGA matrix switcher is a matrix switcher whose input and output signals are VGA signals. Other types can be deduced by analogy. [0004] Such as figure 1 As shown, when using, first connect the VGA / audio si...

AI Technical Summary

Problems solved by technology

If there are many people in a video conference who need to give speeches and demonstrations, it is necessary to arrange a corresponding number of lines from each speaker's seat to the computer room at the venue, and connect the speaker's computer to the switch in the computer room, which is inconvenient for on-site construction and increases probability of failure

In large-scale video conference venues, it is often necessary to reserve multiple seats for presentations. As the number of channels increases, a matrix switcher with a higher number of channels has to be selected, and the cost will increase accordingly.

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