HD-AHD / HD-TVI / HD-CVI / EX-SDI

HDCVI was developed by Dahua and is being licensed to other manufacturers both directly and via the HDcctv Alliance as HDcctv 2.0 AT.

HD-TVI was developed by Techpoint, a U.S. semiconductor manufacturer. It has been licensed to Dahua's largest competitor, Hikvision, among others.

AHD is developed by Korean Nextxhip for beating CVI and TVI

[링크 : http://www.cctvforum.com/viewtopic.php?f=5&t=42549]

High Definition Composite Video Interface

High Definition Transport Video Interface

Analogue High Definition

[링크 : https://www.linkedin.com/pulse/20140912094320-252393278-let-s-talk-about-cvi-tvi-ahd]

HDCVI ( High Definition Composite Video Interface) is a solution for megapixel high definition applications, featuring non-latent long-distance transmission at a lower cost. The name has to do with its baseband and quadrature amplitude modulation technology, which is able to avoid CVBS cross talk, completely separate brightness and hue signal, and further enhances video quality.

[링크 : http://camstarusa.com/2014/12/hd-cvi-hd-tvi-technologies/]

Better Anti-Interference Capability:

The anti-interference capability of HD-SDI solution is relatively poor when been placed against high-frequent radiation environment, which could lead to higher bit error ratio while the HDCVI adopts low-frequency modulation technology, making it free from the high-frequency wireless electric radiation to ensure stable video transmission at high image quality.

[링크 : http://arindamcctvaccesscontrol.blogspot.kr/search/label/HDTVI]

음.. 외국꺼라 피트인가?

아무튼 500m 정도 전송가능한 규격으로

HD-SDI가 150m 정도가 리피터 없이 보낼수 있는 한계치 이기에 거리로 인한 메리츠가 존재하는 듯

(어쩌면 거리가 전부일지도)

[링크 : http://www.supercircuits.com/lp/compare-hd-analog-video-formats]

[링크 : http://www.hisharp.com/TVI/tvi_en.pdf] HD-TVI

[링크 : http://www.dahuasecurity.com/hdcvi/hdcvi-intro.html] HD-CVI

+ 2015.05.08

EX-SDI eyenix

[링크 : http://www.eyenix.com/index/sub01.php?vmenu=v0201]

+

2015.06.01

VLC - Visually Lossless Codec

[링크 : http://www.securityworldmag.co.kr/news/news_view.asp?idx=2893&part_code=01]