Special-effect switching device and special-effect switching method of desktop video processing control console

Abstract

The invention discloses a special-effect switching device and a special-effect switching method of a desktop video processing control console. The special-effect switching device comprises an input port, a signal switching module, a signal matrix switching module, a signal decoder, a video processing module, a special-effect switching module, a pre-monitoring window and a main output display screen; the input port is connected with the signal switching module, the signal switching module is connected to the signal matrix switching module, the signal matrix switching module is connected with the signal decoder, the signal decoder is connected with the video processing module, and the video processing module is connected with special-effect switching module, the pre-monitoring window and the main output display screen; the special-effect switching device provided by the invention solves the problem of short-time blank screen of an LED display screen in a traditional video source switching process, thereby improving user happiness and enhancing user experience.

Description

technical field [0001] The invention relates to the technical field of video processing, in particular to a desktop video processing console special effect switching device and a special effect switching method. Background technique [0002] Due to its ultra-high brightness, contrast and large size, LED display screens have been widely used in advertising, ceremonies, live broadcasts and other broadcasting occasions. The LED display control system consists of three parts: video processor, sending card and receiving card. The video processor has rich input interfaces, which can convert any input source into DVI or HDMI signal, and then transmit it to the sending card through the cable. LED display work site often requires multi-screen switching to switch multiple images to the LED display. These images generally come from multiple on-site cameras, or pre-programmed video programs, or images played by computers. These video signals There are sometimes as many as a dozen sour...

AI Technical Summary

Problems solved by technology

LED display work site often requires multi-screen switching to switch multiple images to the LED display. These images generally come from multiple on-site cameras, or pre-programmed video programs, or images played by computers. These video signals There are sometimes as many as a dozen sources; these image program sources do not have a unified synchronization mechanism, nor do they have a consistent format. If they are directly switched between these signal sources, it will cause the subsequent video processing unit to have a second-level short-lived The timing is chaotic, and it goes through the process of re-identifying the input signal format and re-establishing the timing, and this process will lead to abnormal display of the picture on the LED screen, such as discontinuous phenomena such as blurred screen, black screen, freezing, flickering, etc. If the LED screen needs Frequent and fast switching between multiple screens, such abnormal display will be unbearable for users

[0003] The existing technology is limited by the structure and working principle of the hardware, so that the realization method of seamless switching has the following disadvantages: 1) The switching effect is single and stiff, and when two video sources are switched, the last frame image of the previous input source needs to Repeated display, after the new input source is stable, the new picture will be displayed normally, so there will be a certain period of picture freezing effect, causing the switching process to be stiff and affecting the audience's experience; 2) There may be errors in the switching process, that is, due to The image resolution and other parameters of different input sources are different. After switching to a new input source, the image size or frame rate changes, resulting in the need to reconfigure the parameters of the video playback. What is more serious is that some receiving cards may even receive The correct image is not available, and the display screen is partially blurred or black.

Images