Safe broadcast monitoring method based on video and audio comparison

Abstract

The invention relates to a safe broadcast monitoring method based on video and audio comparison, which comprises the following steps: (a) receiving two paths of signals, wherein the two paths of signals are broadcasted by the same broadcast signal source; (b) aligning the two paths of signals according to a time stamp mechanism; (c) accumulating video and audio data of the two paths of signals; (d) extracting the video and audio data, and comparing the signals; and (e) processing the comparison results. By introducing the method of comparing two paths of signals, the automatic objective analysis of the technical index of the last-stage broadcast signal is realized in a broadcast channel sub-control system. When the signal difference exceeds the limited threshold range, a warning message is automatically released to the related workstation in the system to prompt the related personnel to carry out the necessary processing operation, thereby finishing the quick processing of faults. Theinvention is not limited by the subjective judgment capability of the personnel, greatly relieves the workload and the mental pressure of the broadcast personnel in a television station, effectively avoids the occurrence of broadcast accidents, and greatly improves the broadcast safety.

Description

technical field [0001] The invention relates to a safe broadcast monitoring method based on video and audio comparison, which is a method for analyzing, comparing and alarming the final signal by the broadcast channel sub-control system under the computer network environment. It is a method of analyzing, comparing and alarming the transmitted signals, which is a safe broadcasting monitoring technology for the broadcasting system of the TV station. Background technique [0002] Usually, when TV stations design and build broadcast control systems, broadcast security is the primary consideration, and safe broadcast is the ultimate goal of every TV station's broadcast system. For the broadcast sub-control system, the security of the broadcast system can be realized in various ways, such as adopting a redundant backup structure for the core equipment inside the system to avoid a single failure point; optimizing the broadcast by improving the application program The control logic...

AI Technical Summary

Problems solved by technology

If the staff is slightly negligent and does not find any abnormalities in the final broadcast signal, it will lead to broadcast accidents such as black frames and still frames in the final broadcast screen

Moreover, in such a situation where the spirit is in a state of tension for a long time, even if the abnormality of the last-stage broadcast signal can be found in time, it is easy to cause human misoperation accidents during emergency handling of the broadcast control

In addition, for the final broadcast signal of the channel sub-control system, if some technical indicators of the signal have problems, such as the difference between the left and right channels of the audio signal is too large, the phase is reversed, and the video signal continues to freeze for a period of time, similar to this signal abnormality The situation cannot be found through manual subjective judgment at all, it will inevitably affect the quality of the final broadcast, and cannot meet the requirements of safe broadcast

For the monitoring of the return signal, it can only simply judge whether there is a fault in the signal transmission process, but cannot provide follow-up processing plan suggestions, and cannot guarantee that the signal fault will be dealt with in a timely manner

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