High-reliability and easily-extensible video storage and retrieval method and system thereof

Abstract

The invention relates to the field of video monitoring and discloses a high-reliability and easily-extensible video storage and retrieval method and a system thereof. Reliability of the system is improved, information islands are prevented, management complexity is reduced, and capacity is enlarged. The method is based on a hardware system which comprises at least two main devices, at least one slave device and at least a camera, the main devices are connected in parallel, mapping tables and databases are arranged in the main devices, one of the main devices serves as a main working device, and other main devices serve as main hot-standby devices. The high-reliability and easily-extensible video storage and retrieval method includes steps that the main working device inquires the slave devices corresponding to the cameras in the mapping table of the main working device; the main working device triggers the cameras to record videos and triggers the corresponding slave devices to store data of the videos; and the main working device and the main hot-standby devices update the respective databases synchronously.

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 (NVR) devices (such as embedded NVR, PC-NVR, etc.) can only access a fixed number of front-end devices (such as network cameras, network video servers, etc.), embedded NVR is generally 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 isolated islands of information, wh...

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 nearline 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

Images