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A digital video signal processing device and method

A digital video and signal processing technology, which is applied in the field of communication, can solve the problems of large amount of operation and low efficiency of image splicing, and achieve the effects of saving operation amount, reducing image distortion, and improving efficiency

Active Publication Date: 2017-05-10
ZHEJIANG DAHUA TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Embodiments of the present invention provide a digital video signal processing device and method, which are used to solve the problem that when the windows on the display screen overlap, the complete picture that should be displayed by the window is displayed in each window, resulting in a large amount of calculation for picture splicing. Large, the problem of low screen splicing efficiency

Method used

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  • A digital video signal processing device and method
  • A digital video signal processing device and method
  • A digital video signal processing device and method

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Embodiment 1

[0027] Embodiment 1 of the present invention provides a digital video signal processing method. The following describes the process of displaying the image input by one input channel through the window. The steps of the method can be as follows figure 1 shown, including:

[0028] Step 101. Determine an image to be displayed.

[0029] This step may include performing image scaling processing on a frame of image input by one input channel to obtain an image to be displayed.

[0030] Specifically, in this step, before the image is scaled to obtain the image to be displayed, the specified window for displaying the frame image input by the input channel and the size of the specified window can be determined (of course, if multiple input channels The input image is output by multiple output channels, it can be understood that when the specified window is determined, the display screen where the specified window is located (and the output channel connected to the display screen) h...

Embodiment 2

[0050] Embodiment 2 of the present invention provides a digital video signal processing device, which can be understood as a part of a splicer. The structure of the device can be as figure 2 shown, including:

[0051] The scaling module 11 is used to perform image scaling processing on a frame of image input by one input channel to obtain the image to be displayed; the coverage judgment module 12 is used to determine the image for displaying the image to be displayed according to the coordinate range of each window in the display screen. Whether there is an area covered by other windows in the designated window, one display point in the designated window is used to display a pixel, and each pixel in the image to be displayed is related to each display in the designated window One-to-one correspondence; the output module 13 is used to output the corresponding image to be displayed to each display point in the designated window that is not in the region if the coverage judgmen...

Embodiment 3

[0064] Embodiment 3 of the present invention provides a method for judging window coverage, which is used to judge whether there is an area covered by other windows in the specified window. The steps of the method can be as follows Figure 4 shown, including:

[0065] Step 201, determine that coverage judgment starts.

[0066] In this step, the coverage judging module can start judging whether the window is covered according to the trigger of the scaling module, which can be understood as the scaling module receives a frame of image input from one input channel (that is, receiving the The flag can be understood as indicating that when a frame of image starts to be input), the coverage judgment module is triggered to judge whether the specified window is covered. And in this step, the coverage judging module can obtain the window identification of a window for displaying the frame image (image to be displayed) after zooming processing from the parameter determination module (w...

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Abstract

The embodiment of the invention provides a digital video signal processing device and method. For each input channel, after an image to be displayed is obtained and before the image to be displayed is displayed through a display screen window, whether an area, covered by other windows, of the display screen window exists or not is determined. If the fact that the area, covered by the other windows, of the display screen window exists is determined, corresponding pixels do not need to be output in the area, and displaying of a display screen on the area is of no need. Thus, operation consumed by image splicing is saved, the efficiency of image splicing is improved, and the probability of image distortion phenomena is reduced.

Description

technical field [0001] The present invention relates to the communication field, in particular to a digital video signal processing device and method. Background technique [0002] With the development of TV curtain wall-related technologies such as liquid crystal display technology, embedded hardware splicing technology, multi-screen image processing technology, and signal switching technology, new splicing curtain walls have been rapidly popularized in large-screen display devices for engineering applications. Especially the LCD splicing curtain wall is used as a safe city command center, railway (subway), port, dock monitoring system, intelligent traffic management monitoring center, national defense or military monitoring system, power dispatching monitoring system, large factories and mines monitoring system, financial management monitoring system, TV station Or a key display device for the collection and processing of information such as the monitoring curtain wall of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N5/14G09G5/14
Inventor 郭彦华张兴明傅利泉朱江明吴军吴坚
Owner ZHEJIANG DAHUA TECH CO LTD