For the past decade mostly analogue cameras were being sold. IP (Internet Protocol) cameras were introduced four years back, but they did not gain currency because of the very high price vis-a-vis analogue cameras. IP Cameras are digital in technology. Like any new electronic product launches in the world, any new products researched and introduced will be very expensive. The volumes and prices are inversely proportional. The future in one to two years , for the digital cameras (IP Cameras) looks bright & one can see these cameras more & more.
Some companies introduced Analogue High Definition cameras. Each company gave its own name for its Analogue High Definition Cameras. Some call it AHD (Analogue High Definition). Some others call it HD CVI. Yet others call it HD SDI. Some other company call it TVI . Basically they are all Analogue cameras only, but they achieve higher levels of resolution. They are not Digital. Some of them have 1 mega pixel, some have 1,3 mega pixel and some others have 2 mega pixel. More the pixels, more the resolution and the picture will be more clearer.
The IP (InternetProtocol) cameras are digital. You have IP cameras with 0.3 Mega pixel to 1.3 mega pixel to 2 to 3 mega pixel and much more. They are at the moment 5-6 times more expensive than the analogue cameras. If you use a IP camera, it will generate an IP for the camera and you can record in a system directly using a router / switcher in between. A router has only 4 ports, hence you can connect only 4 IP cameras through a router. You can use a switcher for more cameras. But if you use a recording unit , you need NVR ( net work video recorder). Generally NVR is more expensive over a analogue DVR.
Though most of our attention these days is focused on the transition to IP video technology, it's important to note that analog CCTV security cameras can still be highly effective for many surveillance applications, especially those on a budget. With traditional CCTV security cameras, the video signal is processed and transmitted in analog format for local viewing from one central monitoring location. But that doesn't mean you can't use analog cameras in an IP-based surveillance environment. Using IP video encoders and other equipment such as digital video recorders and hybrid DVRs makes it possible to leverage your existing analog cameras while migrating into the world of digital surveillance.
Some companies introduced Analogue High Definition cameras. Each company gave its own name for its Analogue High Definition Cameras. Some call it AHD (Analogue High Definition). Some others call it HD CVI. Yet others call it HD SDI. Some other company call it TVI . Basically they are all Analogue cameras only, but they achieve higher levels of resolution. They are not Digital. Some of them have 1 mega pixel, some have 1,3 mega pixel and some others have 2 mega pixel. More the pixels, more the resolution and the picture will be more clearer.
The IP (InternetProtocol) cameras are digital. You have IP cameras with 0.3 Mega pixel to 1.3 mega pixel to 2 to 3 mega pixel and much more. They are at the moment 5-6 times more expensive than the analogue cameras. If you use a IP camera, it will generate an IP for the camera and you can record in a system directly using a router / switcher in between. A router has only 4 ports, hence you can connect only 4 IP cameras through a router. You can use a switcher for more cameras. But if you use a recording unit , you need NVR ( net work video recorder). Generally NVR is more expensive over a analogue DVR.
Though most of our attention these days is focused on the transition to IP video technology, it's important to note that analog CCTV security cameras can still be highly effective for many surveillance applications, especially those on a budget. With traditional CCTV security cameras, the video signal is processed and transmitted in analog format for local viewing from one central monitoring location. But that doesn't mean you can't use analog cameras in an IP-based surveillance environment. Using IP video encoders and other equipment such as digital video recorders and hybrid DVRs makes it possible to leverage your existing analog cameras while migrating into the world of digital surveillance.
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