Distributed VGA multimedia digital matrix based on meshwork and work flow

Abstract

The present invention discloses a distributed VGA multimedia matrix based on meshwork and the work flow which relates to a VGA multimedia matrix field. The multimedia matrix includes an IP network (12) which is equipped with a server (11), a compressor (13) and a decompressor (14); the server (11) communicates with the IP network (12); a computer (20), the compressor (13), the IP network (12) and the decompressor (14) communicate orderly; the decompressor (14) connects with a display (30) and an audio power amplifier. The multimedia matrix realizes audio with multi-route and VGA signal switching random; the signal pathway is bore by the IP network which can solve problem of limited transmission distance caused by signal attenuation; the matrix expansion is simple and rapidly by using distribution type construction, and the actual switching capacity can reach M*500*M*500 (M represents server numer.

Description

technical field [0001] The invention relates to the field of a VGA (computer desktop output signal) multimedia matrix, in particular to a network-based distributed VGA multimedia matrix and its work flow; the invention can switch any VGA and audio input channel to an IP network Any one of the VGA and audio output channels. Background technique [0002] The realization principle of the traditional VGA digital matrix is ​​to convert the analog VGA input signal into a digital signal through the A / D converter, then switch to the designated port output through the dedicated digital VGA cross processing module, and finally pass through the D / A converter. Revert to analog signal output to the specified VGA port, so as to realize the arbitrary switching of multiple VGA signals on multiple display terminals. [0003] The traditional VGA digital matrix has three limitations in practical application: [0004] One is the limitation of VGA signal transmission distance. VGA signal is an...

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Problems solved by technology

[0004] One is the limitation of VGA signal transmission distance. VGA signal is an analog signal, which will be attenuated during transmission. If it exceeds a certain distance, it will affect the quality of VGA picture. use within

[0005] The second is the limitation of processing capacity. The traditional digital matrix generally uses a dedicated digital processing chip to centrally process the signal. The processing capability of the digital chip restricts the number of channels for the input and output of the entire matrix; generally speaking, the capacity of the matrix system reaches 64 ×16 is a large-capacity matrix, which cannot meet the needs of some occasions that require switching of hundreds to thousands of VGA channels

[0006] The third is the single type of processing signal, which cannot meet the requirements of simultaneous switching of the VGA signal and audio signal output by the computer in many applications.

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