Method and device for outputting signals by multiple screen processors

Abstract

The invention discloses a method for outputting signals by multiple screen processors. The method comprises the following steps of: according to synchronizing signals, modulating wireless signals, wherein the frequencies of the synchronizing signals are the same with those of field synchronizing signals of video signals of the screen processors; transmitting the wireless signal to each screen processor; receiving the wireless signal by each screen processor; according to the synchronizing signals demodulated from the wireless signals, synchronously outputting the video signals. The invention also discloses a device for outputting the signals by multiple screen processors. According to the method and the device for outputting the signals by multiple screen processors, each screen processor can correctly receive the synchronizing signals; the synchronous output of the video signals of the screen processors is implemented; and the configuration flexibility of a multiscreen display system is improved.

Description

technical field [0001] The invention relates to the field of multi-screen splicing display, in particular to a method and a device for outputting signals from a multi-screen processor. Background technique [0002] The current multi-screen image processors need to use the expansion screen roaming between multiple multi-screen processors to display when realizing the super large screen splicing display. In order to ensure the synchronization of the display screens of each processor, each processor needs Provide a field synchronization signal with the same frequency as the video signal at 50HZ or 60HZ as a synchronization signal; the current implementation method is to introduce the field synchronization to each processor in the form of a daisy chain through a cable, that is, through a cable The synchronization signal is introduced into one of the screen processors, and after shaping and driving, it is then introduced into the other screen processor until all processors get th...

AI Technical Summary

Problems solved by technology

[0004] First, there is a delay when the field synchronization signal is transmitted through cables, especially for long-distance transmission, and the delay phenomenon is serious; It will cause a large phase difference due to delay, which will cause the pictures output by each screen processor to be out of sync;

[0005] Second, due to the introduction of additional cables for transmission, it will cause wiring difficulties; lack of flexibility;

[0006] Third, when the field synchronization signal is stored and transmitted through the cable, it is easily disturbed by the outside world, and the cable itself will also damage the signal, making it difficult for the screen processors to receive the synchronization signal

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