Wireless network transmission RGB signal processing method for multi-screen splicing display wall

Abstract

The invention relates to a method for processing a wireless network transmission RGB signal of a DLP (digital light processing) multi-screen splicing display wall. The method comprises the following steps: a RGB signal end computer automatically runs a client; the client captures a PC display image in real time to code instantaneously; the client encrypts and packages the coded PC display image after a command of a central control end is received, and sends the coded PC display image through a WLAN (wireless local area network); an embedded host computer receives data through the WLAN; a decoder decodes the received data, and converts the data into DVI (digital video interactive) signal output after the command of the central control end is received; the DVI signal output is accessed to amulti-screen splicing processor; the multi-screen splicing processor processes the signal after the command of the central control end is received, including amplifying, reducing an moving; and the DLP splicing display wall displays the signal after the command of the central control end is received. Compared with the prior art, the method has the advantages of low cost, capability of wireless extension of the number of RGB signal sources and the like, and is easy to construct.

Description

technical field [0001] The invention relates to a processing method for network transmission of RGB signals, in particular to a processing method for wireless network transmission of RGB signals suitable for DLP multi-screen splicing display walls. Background technique [0002] In the display and control technology mainly based on DLP splicing, it is one of the important technologies to realize the display of RGB signals (computer screens) on the multi-screen splicing wall. Wireless network transmission of RGB signals is a special and demanding multi-screen splicing wall display application, which can flexibly display multiple computers on the DLP splicing large screen without connecting cumbersome cables. In recent years, with the development of software and hardware technology, RGB signal transmission has been widely used in control room applications in fields such as electric power, rail transit, public security, and government. [0003] From the perspective of RGB signa...

AI Technical Summary

Problems solved by technology

This kind of analog transmission has irresistible interference from peripheral equipment, electric power and other factors, and RGB cables require thicker ones to reduce signal attenuation, which adds great difficulty to construction wiring

[0006] 2) Digital transmission: digital transmission has DVI-D transmission, which requires DVI-D matrix and DVI-D distribution converter, and DVI signal transmission can only be transmitted in a short distance. Generally, DVI cables can transmit 5 to 10 meters. It is far from enough for DLP multi-screen splicing wall. To realize the application of DLP multi-screen splicing wall, it is necessary to add long-line drive equipment, which greatly increases the cost.

[0007] 3) Network transmission: At present, the RGB signal transmitted through the network on the DLP multi-screen splicing wall is slow (about 10 frames per second), and it cannot display real-time video signals, especially the current high-definition signals (720P / 1080P) cannot be transmitted display, and cannot display multiple channels at the same time, because multiple simultaneous displays occupy network resources and CPU resources and cause equipment paralysis

[0008] Usually, there are more or less deficiencies in the processing of RGB signal transmission in the DLP multi-screen splicing wall. Conventional analog and network transmission are often used at the expense of image quality, and digital transmission is used for high-end and high-cost ones.

In a large-scale splicing project, the number of RGB signals is expanded by increasing the matrix, which makes the wiring complicated and the cost increases

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