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AHD What is?

AHD What is?

2015-03-10 09:33:37

Recently, AHD HD security field as freshmenProductAnd technology, has aroused widespread concern in the industry. Many people do not fully understand what is AHD?
First, the concept

General sense, AHD American Heritage Dictionary is the abbreviation of the American Heritage Dictionary phonetics, this interpretation is used more. From the security point of view to explain, AHD representative is Analog High Definition.

Analog High Definition meant to simulate high resolution. About High Definition, in simple terms, we will usually be more than the physical resolution of 720p high-definition format, as claimed, referred to as HD. It refers to the vertical resolution of the screen 1080i, 720p or 1080p. 1080i refers to the resolution of 1920 × 1080, mining interlaced scanning, a complete picture showing per 30; 720p refers to the resolution of 1280 × 720, progressive scan taken sequentially, showing 60 complete pictures per second; 1080p refers to parse degree of 1920 × 1080, mining sequential scanning, a complete picture of 60 per second presentation.

The AHD AHD based protocol, analog coaxial cable transmission progressive scan HD video

Second, feature

AHD with conventional devices as simple and convenient operation, with ordinary coaxial 75-3 class can be done as far as 500 meters high definition lossless transmission, breaking HDVideoTransfer Ultimate existing transmission technology enables low-cost, long-distance, without delay, high efficiency, and easy to implement anti megapixels quality HD video transmission.

Third, the application

AHD followed analog SD transmission ways and means to reduce the complexity of the construction deployment, reduce maintenance costs and complexity of the auxiliary, as well as the technical requirements for construction workers. Ideal for upgrading the old system can not change the basis of the original system, based on the SD easily upgrade to HD. In addition, high-definition quality SD prices, AHD in civil and industrial markets have a very large space for development.

Fourth, the development prospects

In such an era of high-definition monitor, we can see that, AHD HD is undoubtedly another technical innovation market and will become a new trend in the security market.