This paper introduced circuit principle and debugging methods of photoelectric synchronous track camera for vibrating screens.

本文介绍了振动筛光电同步轨迹拍摄仪的电路系统，工作原理及调试方法。

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Many people even kept track of Lois online, through a 24-hour-a-day camera feed on the Museum's web site.

VOA: standard.2010.07.30

Use it to track your camera, briefcase, handbag-anything you never want to worry about losing.

ENGADGET: Kensington wants you to be very afraid of losing your iPhone, buy its $60 Proximo system

OK, you can look at the other side of the usage ratio and say that 45% of photos and videos are still being shot with traditional cameras, and this year, in our Customer Loyalty Engagement Index, we did track digital camera brands.

FORBES: Are Canon, Nikon, and Samsung In Danger of Losing Their Digital Focus?

The system uses a camera to track body movements and reflects those onscreen.

CNN: Motion, 3-D gaming right at home at CES