PC-based digital video recorder system with a plurality of USB cameras

摘要

A PC-based digital video recorder (DVR) system for security and surveillance includes a plurality of USB cameras connected to at least one USB port of a computer by fiber-optic extension cables and USB hubs. The cameras may be cascaded to operate up to 50 meters from the computer. The system processes the digital image data of multiple-channels broadcast from the plurality of cascaded USB cameras.