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Switching method capable of guaranteeing broadcast safety through quality supervision comparison

A quality and safe technology, applied in the direction of image communication, color TV parts, TV system parts, etc., to achieve high quality, good video broadcasting effect, and accurate emergency switching

Active Publication Date: 2013-06-19
SHANGHAI BAIBEI SCI & TECH DEV
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  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the shortcomings of the current broadcasting system that emergency switching is mainly aimed at black frames and static frames. According to the characteristics of digital TV transmission, judgment and processing are also made on the degradation of broadcasting video quality to ensure the emergency switching of broadcasting videos. accuracy, and the quality of the broadcast video

Method used

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  • Switching method capable of guaranteeing broadcast safety through quality supervision comparison
  • Switching method capable of guaranteeing broadcast safety through quality supervision comparison
  • Switching method capable of guaranteeing broadcast safety through quality supervision comparison

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Embodiment Construction

[0022] The present invention will be further described below in conjunction with the embodiments and with reference to the accompanying drawings.

[0023] In this embodiment, a switching method is used to ensure broadcast safety through quality supervision and comparison. There are many methods for video quality supervision and comparison. The following introduces one of the methods for video inferior broadcast detection based on image objective quality assessment. For the same video and audio program from different sources in the broadcast system, the objective image quality assessment is carried out to determine the quality degradation of the broadcast system, including the following steps:

[0024] Step 1, the step of video synchronization of two signal sources;

[0025] Step 2, the step of extracting the key frames corresponding to the two-way signal source videos;

[0026] Step 3, the step of comparing and scoring the objective quality between the key frame images, and c...

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Abstract

The invention provides a switching method capable of guaranteeing broadcast safety through quality supervision comparison. Video and audio quality supervision comparison is carried out on video and audio main input signals and video and audio spare input signals in a broadcast system, switching is carried out according to a comparison result so as to ensure broadcast safety. Meanwhile, black field and static-frame analysis also is carried out on the video to assist in judging effectiveness of the video. The method is applied to a one-main-one-spare broadcast system and a one-main-two-spare broadcast system, wherein the one-main-one-spare broadcast system and the one-main-two-spare broadcast system are commonly used. According to the method, the phenomena of video black field and static-frame alarming and video quality degradation are comprehensively considered, the broadcast system is ensured to be accurate and errorless in emergency switching, video broadcast effect is good and video broadcast quality is high.

Description

technical field [0001] The invention relates to the field of radio and television signal monitoring, in particular to a switching method for ensuring broadcast safety through quality supervision and comparison. Background technique [0002] In the broadcasting system of TV stations, video signals are often transmitted in the form of SDI, ASI or IP. At the same time, in order to ensure the safety of broadcasting, N+1 backup mode is generally used. At the same time, there are several sets of the same system as the backup of the main channel. In order to switch when there is a problem with the main channel, to ensure that the final broadcast signal can return to normal at the fastest speed. In actual use, when a fault occurs, it is often not found by humans in time, which will lead to abnormal broadcasting for a period of time. Existing methods generally make switching actions by analyzing whether there are black frames and still frames in the broadcast video; video quality de...

Claims

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Application Information

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IPC IPC(8): H04N5/222H04N5/262H04N17/00
Inventor 惠新标陈立德陈志强顾樑
Owner SHANGHAI BAIBEI SCI & TECH DEV
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