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Frame grabber supports motion detection

For designs dealing with video from an analog source, consider using a frame grabber, which provides a quick and easy way to capture and digitize the video. For example, Sensoray’s latest USB model 2251 frame grabber converts an NTSC- or a PAL-composite analog-video source into an MPEG stream along with optional synchronized audio, all in a 1.5x3.5-in. form factor. Users can adjust the resolution and bit rate for picture quality and storage.

You can adjust the output resolution from 320x240 to 720x480 pixels at 30 frames/sec. The bit rate is continuously variable to 6 Mbps. Users can select MPEG1, MPEG2, or MPEG4 compression or can capture frames in JPEG format. The 2251 also supports motion detection in three userprogrammable regions of interest. The user can adjust the motion-detection sensitivity and localize the motion to a 16x16-pixel block.

The 2251 includes a software-development kit with support for Linux and Windows. Prices start at $226.

Sensoray, www.sensoray.com.