07/20/2011

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CCTV Equipment Supplier | HD CCTV or Analogue CCTV Equipment How does HD compare to Analog?<br/> <br/> We&#39;ve all used and seen the traditional analog cameras in live view and what they are capable of. We know there are limitations in performance. The resolution of the CCD sensor is limited to 720x575 pixels. This converts roughly to 540 TV lines of resolution.<br/> HD CCTV operating at 720P provides almost three times the video resolution of analog CCTV, and 1080P provides six times the resolution. The analog cameras have served the security industry for decades and are still the dominant choice for basic security solutions. However, as the demand for greater and better security increases, new emerging technologies such as IP, megapixel and HD are paving its way in the marketplace.<br/> From a security and risk management perspective, the transition to High Definition (HD) CCTV brings with it a number of concrete benefits; in particular, as mentioned, it allows the delivery of more detailed images than ever before. With this in mind we are likely to see HD CCTV being particularly favored for high risk environments such as banking and casinos where the identification of faces is a prerequisite.<br/> <br/> The advantage of HD cameras is that it is possible to keep the camera fixed to record the entire view in high definition while still allowing operators to zoom into areas of the image for greater detail. This preserves the overall scene for later review while still allowing operators to focus on areas of interest. This is extremely useful in forensic analysis, where a seemingly unimportant background detail can often be the clue that cracks a case.<br/> <br/> How does HD compare to IP<br/> Probably the biggest advantage that HD has over IP is the fact that there are no new skills to be learned from the conventional analog CCTV systems. Of course the cameras and DVR need to be replaced with HD, but all you need to do is plug and play on the existing RG59 coax infrastructure. Although surveillance systems will continue to rely on IP Video for integration beyond the premises, HDcctv systems are commercially superior to megapixel IP camera-based systems within the premises for most physical security applications.<br/>

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