If all 33m pixels that the Super Hi-Vision format (known as Ultra HD elsewhere) offers were crammed onto a 22-inch screen, the picture resolution would be an astonishing 400ppi.

如果将所有的33百万像素的超高画质的（即总所周知的“超高清”）版本都塞进一个22英寸的显示屏幕之中，其图像分辨率将达到令人感叹的400像素每英寸。

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Code Storm HD - With its distorted figures, frenzied video screens and computer enhanced night vision displays, Code Storm is the definition of digital chaos.

码风暴高清-凭借其扭曲的数字，疯狂的电视屏幕和电脑增强夜视显示，码风暴的定义是数字混乱。

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Both systems offer four, outdoorready, 720p HD night vision bullet cameras (night vision up to 85 feet) that output full, uncompressed video without latency.

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Dropcam HD includes night vision, digital zoom and two-way talk back so users can respond to what they're watching as it happens.

ENGADGET: Dropcam's iOS app goes big, now optimized for iPad

It also uses a tether and can stay aloft for 12-hours on a single ground-station battery, letting it spy from afar with on-board HD, night-vision and thermal cameras.

ENGADGET: CyPhy Works reveals tethered flying bots that can spy on you indefinitely (video)