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Method and apparatus for detecting video signals with same systems and video conference system

A video signal and standard technology, applied in the field of communication, can solve the problem that the signal change cannot be effectively judged, and achieve the effect of avoiding image cracking

Active Publication Date: 2016-04-27
三亚中兴软件有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the width and height of video signals of the same standard are equal, when switching quickly, based on this commonly used detection mechanism, it is often impossible to effectively judge that the signal has changed, and the video signal is still considered to be continuous.

Method used

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  • Method and apparatus for detecting video signals with same systems and video conference system
  • Method and apparatus for detecting video signals with same systems and video conference system
  • Method and apparatus for detecting video signals with same systems and video conference system

Examples

Experimental program
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Embodiment 1

[0044] In the method for detecting video signals of the same standard in the embodiment of the present invention, the video signal data output by any one of at least two signal sources of the same standard is first received, and then the valid data is identified from the received video signal data. The start position and the end position, and then according to the identified start position and end position of the video signal data, count the number of rows and columns of a complete frame of data received, if a frame of two adjacent statistics is complete If the number of rows and columns of the data are inconsistent, it is detected that the received video signal data has been switched, and the detection result is sent out.

[0045] Such as figure 1 As shown, it is a schematic flowchart of a method for detecting video signals of the same format according to an embodiment of the present invention, and the method includes:

[0046] Step S11, receiving video signal data output by...

Embodiment 2

[0055] Such as figure 2 As shown, it is a device for detecting video signals of the same format according to an embodiment of the present invention, including:

[0056] A receiving module 201, configured to receive video signal data output by any one of at least two signal sources of the same standard;

[0057] An identification module 203, configured to identify the start position and end position of valid data from the received video signal data;

[0058] A statistical module 204, configured to count the number of rows and columns of a frame of complete data received according to the identified start position and end position of the valid data;

[0059] The sending module 205 is configured to detect that the received video signal data has been switched if the number of rows and the number of columns of a frame of complete data counted twice adjacently are inconsistent, and send out the detection result.

[0060] Optionally, when the video signal data received by the recei...

Embodiment 3

[0069] According to another aspect of the present invention, a video conferencing system is also provided, including at least two video acquisition devices, a video switching matrix device and a video conferencing terminal, wherein the video conferencing terminal includes the above-mentioned detection Devices for video signals of the same format.

[0070] Optionally, the video conferencing terminal further includes a subsequent processing module, configured to receive the detection result and the video signal sent by the device for detecting video signals of the same standard, and process the received video signal.

[0071] Such as image 3 As shown, the video acquisition equipment A and B are connected to the video conferencing terminal through the video switching matrix device, A and B are adjusted to be the same standard signal source, connected to the video conferencing terminal through the switching matrix device, and the video signal is detected by the device of the same...

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PUM

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Abstract

The invention provides a method and an apparatus for detecting video signals with same systems and a video conference system. The method comprises: receiving video signal data output by any one of at least two signal sources with same systems; identifying a starting position and an ending position of effective data from the received video signal data; according to the identified starting position and ending position of the effective data, making statistics on a row number and a column number of a frame of received complete data; and if the row numbers and the column numbers of the frame of the complete data, subjected to statistics for two adjacent times, are inconsistent, then detecting that the received video signal data is switched, and sending out a detection result. According to the method for detecting the video signals with the same systems, hidden rows and effective rows in the data are subjected to statistic calculation, so that whether the current data is a frame of complete effective image or not can be identified very easily, and quick switching of a video signal can be detected.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a method, device and video conferencing system for detecting video signals of the same standard. Background technique [0002] In a video conferencing system, multiple cameras are generally used to obtain different conference scenes as the input signals of the conference terminal. In order to facilitate operation, a video switching matrix is ​​often used to switch different input video sources. At present, video signals are generally collected and identified by AD converters. When the video switching matrix switches the video input signals of the same standard, the detection mechanism of the AD chip often cannot recognize the rapid signal changes, which will cause the video conference to be far away. End image cracking and other issues. [0003] The detection mechanism of the AD converter for the video signal is based on the statistics and calculation of the width...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/46H04N5/08
CPCH04N7/15H04N7/147H04M3/56H04M3/567H04M2201/60
Inventor 胡中中
Owner 三亚中兴软件有限责任公司