HD-SDI (High Definition Serial Digital Interface) is a newer kind of video interface run by SMPTE (Society of Motion Picture and Television Engineers) and an upgrade to the current SD-SDI (Standard Definition Serial Digital Interface). An HD-SDI camera allows you the ability to have megapixel in a standalone DVR. Only recently has this technology been incorporated into the CCTV industry, HD-SDI cameras are not limited by bandwidth and offers a very smooth unbuffered realtime video
HDCVI (High Definition Composite Video Interface) is an over-coaxial-cable analog HD video transmission standard which developed in-house by Zhejiang Dahua Technology Co., Ltd. The technology renders two HD video formats—1080P (1920×1080) & 720P (1280×720) by progressive scanning.
As the cameras uses the same coaxial cables as analogue cameras, this makes the upgrading from analogue cameras to Megapixels cameras seamless and cost effective without having to re-cable the whole system.
HDCVI cameras have a further advantage of supporting longer cable runs on RG-59 coaxial cable for up to 600 meters for 720P cameras and 400 meters for 1080P cameras.
ADVANTAGES OF HD-SDI & HDCVI:
- Seamless upgrade from analogue camera to HD camera without re-cabling at half the cost of IP cameras.
- Megapixel & uncompressed image quality —1080P (1920×1080) & 720P (1280×720)
- Long cable run & non-latency reliable video transmission without additions of boosters.
- Strong anti-interference capability & solid interface protection. Free of high-frequency electromagnetic interference; constant signal transmission and display without frame drop and signal loss.
- HDCVI composites video, audio and PTZ signals together and have them transmitted over coaxial cable.
- Two-way data transmission.