Highly reliable and easily expandable video storage, retrieval method and system

Abstract

The present invention relates to the field of video monitors. Disclosed are a high-reliability, extensible video storage and search method and a system thereof, so as to increase system reliability, avoid information islands, reduce management complexity, and implement capacity extension. In the present invention, Based on a hardware system formed of at least two interconnected master devices, at least one salve device, and at least one camera. The master device provides a mapping table and a database. One master device is a working master device, and the other master device is a hot standby master device. The method comprises the following steps: a working master device finding a salve device corresponding to a camera in a mapping table thereof; the working master device triggering the camera to record a video, and triggering a corresponding salve device to store the video data; and the working master device and a hot standby master device synchronously updating databases thereof.

Description

technical field [0001] The invention relates to the field of video monitoring, in particular to an audio and video recording storage and retrieval technology. Background technique [0002] Traditional independent network video recorder (NetworkVideoRecorder, referred to as "NVR") equipment (such as embedded NVR, PC-NVR, etc.) can only access a fixed number of front-end equipment (such as network cameras, network video servers, etc.), embedded NVR It is 16, 32, 64 channels, even if the PC-NVR with high configuration is at most 128, 256 channels. The inventors of the present invention have found that the disadvantages of conventional NVR equipment are as follows: [0003] 1. Information islands, complex management, and independent NVR devices have a limit on the total number of access channels. If you need to access network cameras that exceed the limit, you must add NVR devices; in the end, there will be multiple independent NVRs. NVRs are independent of each other, forming...

AI Technical Summary

Problems solved by technology

[0003] 1. Information islands, complex management, and independent NVR devices have a limit on the total number of access channels. If you need to access network cameras that exceed the limit, you must add NVR devices; in the end, there will be multiple independent NVRs. NVRs are independent of each other, forming isolated islands of information, which is not conducive to users' retrieval of video and audio data; at the same time, it increases the complexity of the entire system management

[0004] 2. Low reliability. Traditional NVRs and IPCs use a fixed connection method. Once a certain NVR fails, all IPCs bound to it will fail, and the client or monitoring center will not be able to obtain real-time data from these IPCs. audio-visual and video data;

[0005] 3. The scalability is poor. If the independent NVR device needs to increase the recording time, it can only be connected to an external near-line storage device (eSATA) or network device (such as a network access server (Network Access Server, referred to as "NAS"), IPSan, etc.)

The management complexity and stability of external storage devices will affect the stability of the NVR itself

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