Multi-source heterogeneous data synchronous replaying method

Abstract

The present invention provides a multi-source heterogeneous data synchronous replaying method, and thus various data can be combined and synchronously replayed according to needs. The method comprises a step of collecting multi-source heterogeneous data, wherein a system adds a time stamp mark in each data packet or data frame in the multi-source heterogeneous data, and the time stamp conversion is carried out, a step of carrying out multi-process collaborative synchronization and realizing multi-source heterogeneous data synchronous replaying, a step of designing a multi-source heterogeneous data replaying process, and a step of controlling multi-source heterogeneous data replaying. According to the method, the synchronous replaying technology of the multi-source heterogeneous data such as a screen video, a radar echo video, a radio / telephone audio and system processing data can be realized, thus various data are confirmed mutually, and the completeness, the accuracy and work efficiency of user event verification analysis are improved.

Description

technical field [0001] The invention belongs to the technical field of synchronous playback, in particular to a method for synchronous playback of multi-source heterogeneous data. Background technique [0002] In order to ensure the completeness and accuracy of the event verification and analysis of the maritime department, and reproduce the scene of the on-duty process of the watchman at that time, the recording and playback subsystem of the VTS (Vessel Traffic Service Vessel Traffic Management System) system will record the radar echo video processed and displayed by the system, The system processes information (track information, alarm information, command orders, etc.), records the phone / radio call records of the watchman and the screen video data of the watchman's seat on duty; when verifying and analyzing user events, multiple data can be combined and replayed synchronously as required , Realize the scene reproduction of the on-duty process. [0003] Currently common ...

AI Technical Summary

Problems solved by technology

The VTS record and playback system involves the recording and playback of multi-source heterogeneous information such as screen video, radar echo video, radio / telephone audio, and system processing data (track information, alarm information, command orders, etc.). Synchronous playback technology has been unable to meet the requirements of on-demand combined synchronous playback of VTS recording and playback system, and there are the following technical problems:

[0006] 3. The start and end times of the recording files are different

[0007] 4. The synchronous playback of multi-channel audio and video from different sources is itself a difficulty in audio and video playback. The existing multi-channel audio and video synchronous playback technology mainly sets the audio sequence as a reference sequence, and the video stream adjusts its playback speed according to the audio playback timestamp Realize audio and video synchronization; the existing multi-channel video synchronous playback technology mainly uses video splicing technology to synthesize multiple videos into one video for playback, which cannot meet the requirements of VTS system for combined playback on demand

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