Display unit coordinate setting method and device based on mosaic display wall signal window

Abstract

The invention discloses a display unit coordinate setting method and device based on a mosaic display wall signal window. The method includes the steps: firstly, acquiring physical information of display units and mosaic display wall signal window information; secondly, calculating unit coordinates of each display unit according to a preset rule and the acquired information; finally, calculating window display coordinates and image shearing coordinates of each display unit according to a preset algorithm, the unit coordinates, the physical resolution of the units and the resolution of input signals. By the aid of the technology, the operation quantity of an internal controller of each display unit is reduced, windowing is accelerated, each display unit can obtain the window display coordinates and the image shearing coordinates of the unit without knowing line and column numbers, a hardware dial switch is omitted, hardware cost is reduced, the image shearing coordinates are calculated according to the unit coordinates, the physical resolution of the units and the resolution of the input signals, complexity of a calculation algorithm is reduced, floating-point operation is decreased, and operation accuracy is improved.

Description

technical field [0001] The present invention relates to the technical field of splicing display walls, in particular to a method and device for setting display unit coordinates based on a signal window of a splicing display wall. Background technique [0002] The signal on the mosaic display wall is often displayed in the form of a window. When opening the signal window, it is necessary to set the coordinates of the window displayed by each unit, mainly to set the window display position and image clipping position. Such as figure 1 The signal window of the 2*4 mosaic display wall shown is described for the 0-0 display unit, such as figure 2 Shown: The 0-0 display unit needs to set the starting position (X, Y) and width (W) and height (H) of the signal window displayed inside the unit; image 3 Shown: The 0-0 display unit also needs to set the cutting start position (X, Y) of the signal image and the width (W) and height (H) of the signal. Only after the above two parame...

AI Technical Summary

Problems solved by technology

[0004] Since the internal controller of the display unit is generally a low-level CPU, the coordinate splicing algorithm is more complicated, and the calculation speed of the low-level CPU is slow, which affects the user's window opening experience. Errors

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