Wikipedia
HDcctv
HDcctv ( High Definition Closed Circuit Television) is an open industrial standard for transmitting uncompressed high-definition digital video over point-to-point coaxial cable links for video surveillance applications. HDcctv uses the SMPTE HD-SDI protocol and can transmit 720p or 1080p video over at least 100 m of RG59 cable.
The HDcctv Alliance is a non-profit, global consortium that develops and promotes the HDcctv standard. Advantages over IP video surveillance are claimed to include low latency and zero configuration.
Devices incorporating HDcctv interfaces include video cameras, DVRs and repeaters.