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Video source state detection method and device

A state detection device and state detection technology, applied in the field of video source detection, can solve the problems affecting the detection efficiency, the accuracy cannot be guaranteed, and the video source state detection algorithm is unknowable, so as to enhance the credibility and improve the detection efficiency. The effect of accuracy

Pending Publication Date: 2021-03-26
XIAN NOVASTAR TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it can be judged that this technology only uses the field synchronization signal VSync as the basis for judgment, and the accuracy only depends on this signal, so the accuracy cannot be guaranteed, and the judgment threshold of the field synchronization signal of the video source state is a fixed value, which also affects the detection. s efficiency
In addition, in the prior art, the control chip also reads the register representing the state of the video source in the video decoding chip to identify, but the detection algorithm of the video source state is unknown, and its detection accuracy cannot be guaranteed

Method used

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  • Video source state detection method and device

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no. 1 example

[0026] like image 3 As shown, the first embodiment of the present invention provides a video source state detection method. Specifically, the video source state detection method provided by the embodiment of the present invention includes, for example, the steps:

[0027] S11: receiving the first frame of image data;

[0028] S12: Obtain the cycle number of the first line synchronization signal of the first frame of image data, the number of effective signal cycles of the first image data, and the duration of the high level of the effective signal of the first image data;

[0029] S13: Receive a second frame of image data adjacent to the first frame of image data;

[0030] S14: Acquire the number of cycles of the second line synchronization signal, the number of cycles of the effective signal of the second image data, and the duration of the high level of the effective signal of the second image data of the second frame of image data;

[0031] S15: Judging whether the cycl...

no. 2 example

[0050] like Figure 5 As shown, the second embodiment of the present invention provides an apparatus 300 for detecting the state of a video source. The video source state detection device 300 includes, for example, a first data receiving module 310, a first parameter acquiring module 320, a second data receiving module 330, a second parameter acquiring module 340, a first condition judging module 350, a second condition judging module 360, The third condition judging module 370 and the video source status determining module 380 .

[0051] The first data receiving module 310 is configured to receive the first frame of image data.

[0052] The first parameter acquisition module 320 is configured to acquire the cycle number of the first line synchronization signal of the first frame of image data, the cycle number of the valid signal of the first image data, and the duration of the high level of the valid signal of the first image data.

[0053] The second data receiving module...

no. 3 example

[0062] like Image 6 As shown, the third embodiment of the present invention provides a video source state detection system 500 . The video source state detection system 500 includes, for example, a memory 510 and a processor 530 connected to the memory 510 . The memory 510 may be, for example, a non-volatile memory on which the computer program 511 is stored. The processor 530 may be, for example, an embedded processor. When the processor 530 runs the computer program 511, it executes the video source state detection method in the aforementioned first embodiment.

[0063] For the specific working process and technical effects of the video source state detection system 500 in this embodiment, refer to the description of the foregoing first embodiment.

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Abstract

The embodiment of the invention discloses a video source state detection method and a video source state detection device. The video source state detection method comprises the following steps: receiving first frame image data; obtaining a first line synchronization signal period number, a first image data effective signal period number and first image data effective signal high level duration ofthe first frame image data; receiving second frame image data adjacent to the first frame image data; obtaining a second row synchronization signal period number, a second image data effective signalperiod number and second image data effective signal high level duration of second frame image data; judging whether the line synchronization signal period number and the image data effective signal period number in the first frame of image data and the second frame of image data meet a preset condition or not, and obtaining a judgment result; and determining a video source state according to a judgment result.

Description

technical field [0001] The invention relates to the technical field of video source detection, in particular to a video source state detection method and a video source state detection device. Background technique [0002] Usually, a video processing device processes an input video source. The video source provides multiple frames of image data to the video processor. When processing image data, it is necessary to perform image data analysis and image data output according to the standard timing provided by VESA (Video Electronics Standards Association, Video Electronics Standards Association), such as figure 1 and figure 2 shown. The so-called 1920×1080 resolution image corresponds to figure 1 and figure 2 The effective image area in , and the remaining intervals are blanking periods. Generally speaking, the values ​​of the upper, lower, left, and right borders are zero, that is, there may be no borders. The period of the field synchronization (VSync) signal is the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N17/00
CPCH04N17/00
Inventor 韩剑南韦桂锋
Owner XIAN NOVASTAR TECH