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Video controller and video control method

A video controller and video control technology, which is applied in the field of video controller, video control and processing, can solve problems such as abnormal video source status, and achieve the effect of increasing the speed of switching sources

Inactive Publication Date: 2017-09-22
XIAN NOVASTAR TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] In the actual application of LED display, it is often necessary to display multiple video sources on the LED display, or in the middle of playing video source A, it needs to switch to video source B to play. It was discovered that the status of the video source was abnormal, causing the LED display to display not what the user wanted or expected

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Embodiment Construction

[0013] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0014] Such as figure 1 As shown, a video controller 10 provided in the embodiment of the present invention includes: a micro control unit 11 and a video processing unit 15; and a programmable logic device 13 for pre-monitoring control. In this embodiment, the micro control unit 11 is connected with the programmable logic device 13 and the video processing unit 15 as the control terminal of the programmable logic device 13 and the video processing unit 15, and the ...

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Abstract

The embodiment of the invention discloses a video controller and a video control method. A first control signal is generated based on a first cutting operation, and a second control signal is generated according to a second cutting operation. According to the first control signal, the current input source of a screen channel with the bottom layer as the display window layer state attribute is switched to a target source to be cut, and the display window layer state attribute of the screen channel is switched from the bottom layer to the top layer according to the second control signal to output and display the target source to be cut. According to the embodiment of the invention, the speed of cutting preview can be effectively improved.

Description

technical field [0001] The invention relates to the technical field of video control and processing, in particular to a video controller and a video control method. Background technique [0002] In the actual application of LED display, it is often necessary to display multiple video sources on the LED display, or in the middle of playing video source A, it needs to switch to video source B to play. It was discovered that the status of the video source was abnormal, resulting in the LED display not displaying what the user wanted or expected. As for the preview, you can display the video source signal you want to switch on the monitor or LCD color screen and other preview display screens in advance, so as to realize the function of knowing the content of the switched source before switching the source, so as to better realize control and control. Prevent accidents from happening. Therefore, how to realize fast source cut-off under pre-monitoring is a technical problem to b...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/268H04N7/18
CPCH04N5/268H04N7/18
Inventor 周晶晶宗靖国庞刚
Owner XIAN NOVASTAR TECH