IP cameras have been developed for many years, since from combination of analogue signal plus encoder technology to digital signal encoding technology, IP camera already made the jump between standard resolution to high definition phrase. On the other hand HD-SDI (high-definition serial digital interface) as the new products, receiving many expectations from not only security manufacturer, but also security integrator, but the reality turns out it did not meet the high expectation, only few big surveillance project has adopted HD-SDI cameras.

HDCVI is based on coaxial cable to transmit composite video signal brand-new technology, adopting analog signal modulation technology, and progressive scan CMOS image sensor to deliver 1280H (1280x720) and 1920H (1920x1080) high definition video signal. HD-CVI technology can output megapixel resolution, including 1280H@25fps, 1280H@30fps, 1280H@50fps, 1280H@60fps, 1920H@25fps, 1920H@30fps six formats. Adopting the HDCVI technology can achieve uncompressed, lossless, without delay video transmission between HDCVI camera and HDCVI DVR. More over, HDCVI can transmit audio and control signal, up to 500 meters long range transmission distance.