On large sites, multiple video walls can be deployed in different control rooms, all accessing the same video from any camera or network video recorder.

在集团公司、大型企业，多个视频监视墙可以部署在不同的控制室内，可以通过网络视频摄象机和录象机看到相同的视频图象。

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Larger systems can integrate multiple IP cameras together using an NVR (network video recorder) that connects to and records multiple cameras at the same time.

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Founded in 1997, TiVo Inc. (NASDAQ: TIVO) developed the first commercially available digital video recorder (DVR), and today TiVo is a global leader in advanced television service offering products on multiple platforms and devices.

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