Method for synchronously controlling different models of video monitoring devices

A technology of video monitoring and synchronous control, applied in the direction of digital output to display devices, TVs, color TVs, etc., can solve problems such as instability, no consideration of video output stability of monitoring devices, and inability to guarantee video synchronization, achieving strong inclusiveness , the effect of good applicability

Active Publication Date: 2016-12-14
CHENGDU ZVAN TECH
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Problems solved by technology

But this method also has an obvious disadvantage: it does not consider the stability of the video output of the monitoring device, but regards the frame rate of the video output as a constant
Therefore this method is unstable and cannot guarantee the video synchronization after a period of time

Method used

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  • Method for synchronously controlling different models of video monitoring devices
  • Method for synchronously controlling different models of video monitoring devices
  • Method for synchronously controlling different models of video monitoring devices

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Embodiment Construction

[0016] The content of the present invention will be further described below in conjunction with the accompanying drawings.

[0017] The present invention calculates the current real-time frame rate, compares the basic frame rate with the current real-time frame rate, and performs the operation of sub-video source time synchronization. The specific steps are as follows:

[0018] S1. Obtaining the historical frame rate of each sub-video source per unit time

[0019] For camera devices with different output frame rates, the time synchronization of the spliced ​​video is achieved by adjusting the frame rate. In order to ensure the real-time synchronization of the sub-video sources, the output frame of each camera device will be used to determine its previous unit. The frame rate within the time, the unit time set in this method is 1 second;

[0020] S2. Generation of single Gaussian model and determination of current real-time frame rate

[0021] For general camera equipment, th...

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Abstract

The invention discloses a method for synchronously controlling different models of video monitoring devices and relates the technical field of video synchronous control. The method comprises following steps: S1. acquiring history frame rates of all sub-video sources in unit time; S2. acquiring the current real-time frame rates of all the sub-video sources; S3: after acquiring the real-time frame rate of each sub-video source, carrying out interframe processing on each sub-video source according to a basic frame rate which is preset in advance and in order to adapt to dynamic change of the real-time frame rates, adopting a positive-negative approximation compensation method; and S4. through the positive-negative approximation compensation method, obtaining output of each sub-video source at the basic frame rate, carrying out proportion transformation on the output of each sub-video source to allow the output to be in the same size and then splicing the transformed synchronous frames into forms required by businesses. The beneficial effects of the method are that by use of the method, the requirements of users of synchronous control and concentrated display on multiple different specifications of video monitoring devices can be met.

Description

technical field [0001] The invention relates to the technical field of video synchronization control, in particular to a method for synchronous control of different types of video monitoring equipment. Background technique [0002] The process of splicing video frames is the process of splicing multiple channels of video into one video after appropriate scale conversion. In the case of a large number of video channels, this processing method can achieve the purpose of synchronously displaying the surveillance video. This method The dependence on the number of monitors is greatly reduced, and the requirement for network bandwidth during multi-channel video transmission is greatly reduced. However, the competition in the video surveillance market is fierce at present, and video surveillance equipment emerges in an endless stream. There is a difference in the frame rate of different video sources, that is, the output of the number of frames per second is inconsistent. In the p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/18H04N5/04G06F3/14
CPCG06F3/1446H04N5/04H04N7/181
Inventor 李百凌黄小莉岳波黄福建王馨梅
Owner CHENGDU ZVAN TECH
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