Specifications

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HD-CCTV SYSTEM
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Status of HDcctv alliance
Founded in 2009, HDcctv Alliance(www.highdefcctv.org) is developing the HD-SDI standard based on SMPTE standard. Their
purpose is functional and performance standardization for speedy HD-SDI market expansion, so it adds new items to ensure
the performance or restricts items suitable for surveillance market. Approx. 50 companies all over the world is joining this
alliance and closely working with the alliance. Below picture shows the company logos that joined and working with HDcctv
Alliance at present. It includes diverse companies like chipset provider, DVR and camera manufacturers from various countries
of the world.
Guarantee of product compatibility and transmission performance
HDcctv Alliance is developing the HD-SDI standard, and this standard includes video, physical layer, meta data, etc. which are
using between HD-SDI Tx/Rx equipment. Especially, they are standardizing the performance, compatibility requirements that
are necessary for surveillance camera, DVR, monitor, and repeater, and its purpose is fast market expansion of HD-SDI products
in surveillance market. For example, because still image is as very important as video in surveillance market, they do not allow
interlace scan method that makes quality degradation of still image and only allow progressive scanning method.
HDcctv Alliance is clearly providing the HD-SDI’s minimum requirements for performance, standardizing the compatibility
between equipment, ensuring product performance for the expansion and settlement of the HD-CCTV market.
Standardization (dierences from SMPTE)
HDcctv Alliance and SMPTE made a license agreement in year 2009, and the HDcctv standard was derived from SMPTE-292M.
Because HD-SDI is already proven technology in broadcasting market, it did not need a separate standard. However, in con-
trast to the relatively small and high cost of broadcasting equipment market, large and price-sensitive surveillance market
needs further standardization of electrical function, performance and the compatibility between diverse equipment. HDcctv
standard requests the plug and play regardless of device’s features, nation, price and it provides their test methods in certi-
cation process.
Below table shows the dierences between SMPTE and HDcctv standard. HD-CCTV adopted 1.485Gbps, 1080p30 HD-SDI
transmission method due to the compatibility between equipment and importance of still image. Additionally, the transmis-
sion distance is one of the main issues, it requests strict signal quality of equipment. HDcctv is still working for improvement of
transmission distance, communication between equipment and adding PoC function for easy installation.
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