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Multi-source heterogeneous data synchronous replaying method

A data synchronization and data technology, applied in the direction of image communication, selective content distribution, electrical components, etc., can solve the problem of different start and end times of recording files, which cannot meet the requirements of VTS recording and playback system on-demand combined synchronous playback, and cannot meet VTS The system combines playback requirements and other issues on demand to achieve the effects of increasing comprehensiveness and diversity, solving synchronization problems, and improving integrity

Active Publication Date: 2016-03-09
THE 28TH RES INST OF CHINA ELECTRONICS TECH GROUP CORP
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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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  • Multi-source heterogeneous data synchronous replaying method

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Embodiment Construction

[0032] The invention takes the standard time as the synchronization reference, adopts a multi-process coordination mechanism, centrally controls the decentralized replay, and realizes synchronous replay of multi-source heterogeneous data combined on demand. The specific implementation includes the following aspects.

[0033] 1. Timestamp conversion

[0034] During data collection, the system adds a time stamp to each data packet or data frame. Timestamp conversion is required because the timestamp markers in packets and data frames do not follow a uniform format. Unified conversion to standard time facilitates synchronous replay of multi-source heterogeneous data.

[0035] (1) The recording files of radar echo video and system processing data are composed of data packets. Each data packet has a time stamp. This time stamp is the system standard time when the data is generated. Can.

[0036] (2) H.264 standard is used for encoding when video data is collected, and RTP proto...

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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 ...

Claims

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Application Information

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IPC IPC(8): H04N21/236H04N21/8547
CPCH04N21/23608H04N21/8547
Inventor 陈智勇白正柴其钰孙文俊王伟吴俊峰
Owner THE 28TH RES INST OF CHINA ELECTRONICS TECH GROUP CORP
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