A video monitoring device and method for data synchronization thereof
A video surveillance and data technology, applied in color TV parts, TV system parts, TV and other directions, can solve the problems of high cost, asynchronous, inability to retrieve, etc., and achieve the effect of synchronous deletion and easy deletion
Active Publication Date: 2017-10-27
ZHEJIANG DAHUA TECH CO LTD
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Problems solved by technology
[0005] Due to the high-bandwidth video data generated by the video recording, subject to the capacity of the storage medium, the video data stored in the hard disk has a limited length of time, while the alarm information generates text information with a small amount of data and can be stored for a long time. This difference makes it impossible for the user to retrieve the video of the corresponding time even if the user finds the earlier alarm information. For users who use the alarm information to view the video, it may take a lot of unnecessary time to filter such "alarms are visible, The video is not visible, that is, the video information is not synchronized with the alarm information" alarm information
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[0050] Embodiments of the present invention provide a video monitoring device and a method for synchronizing data thereof, so as to realize synchronous deletion of recording data and alarm data on the video monitoring device.
[0051] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0052] like figure 1 As shown, the video monitoring device provided by the embodiment of the present invention performs data synchronization method flow, and the specific implementation steps include:
[0053] Step 101, after each triggering of the recording action, obtain the recording data and store it in the recording storage area in chronological order as a recording data record, and record the trigger time of this recording action and the corresponding recording data in the starting address of the recording storage area Stored in the video index table.
[0054] In this step, after each video recording action is t...
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The embodiment of the present invention discloses a video monitoring device and a method for synchronizing data thereof. When it is determined that video data is overwritten or deleted, the address of the overwritten or deleted video data and the start address recorded in the video index table , determine the record corresponding to the overwritten or deleted video data, and use the trigger time of the last record in the record as the deletion time point; according to the alarm index table, all alarms in the alarm storage area whose trigger time is before the deletion time point All data records are deleted. The embodiment of the present invention can delete all alarm data records in the alarm storage area whose trigger time is before the deletion time point according to the corresponding deletion time point in the alarm index table of the overwritten or deleted video data records, thereby realizing video data recording Synchronous deletion with alarm data records.
Description
technical field [0001] The invention relates to the technical field of video monitoring, in particular to a video monitoring device and a data synchronization method thereof. Background technique [0002] Video surveillance is an important part of the security system, including front-end cameras, transmission cables, and video surveillance platforms. Video surveillance is widely used in many occasions because of its intuition, accuracy, timeliness and rich information content. In recent years, with the rapid development of computer, network, image processing and transmission technology, video surveillance technology has also made great progress. A complete video surveillance system is composed of 5 parts: camera, transmission, control, display, record and registration. The camera transmits the video image to the control host through the network cable or coaxial video cable, and the control host distributes the video signal to each monitor and recording device, and simultan...
Claims
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IPC IPC(8): H04N5/76H04N7/18
Inventor 殷俊曹刚廖晨歌张兴明
Owner ZHEJIANG DAHUA TECH CO LTD