According to Electronicshub, the technology behind security cameras is evolving continuously. First, we had the standard CCTV Cameras. Then, as the World is shifting to the digital arena, so are security cameras. Nowadays, almost all security cameras are Digital IP Cameras.
Analog Security Cameras
The original CCTV Cameras are all Analog. In the beginning, analog security cameras are just for showing the feed on TV or monitors. They transmit the data through a coaxial cable.
Later, we started recording the video. During this period, the analog camera captures the video and sends the data to a Digital Video Recorder (DVR). The DVR then converts the analog video to digital video and stores it on a digital tape.
With technological advancements in storage technology, we moved on from tapes to magnetic disks. So, instead of recording the footage on tapes, a modern DVR uses Hard Disk Drives to store the footage.
Digital Security Cameras
As the name suggests, everything is digital in Digital Security Cameras. Cameras are digital and the video data is also digital. As a result, there is no need for any intermediate DVR.
We could directly store the video footage from a digital security camera on a hard disk drive or SD Card. You don’t need any DVR or other converting device.
Most modern digital security cameras are IP or Network Cameras. One or more IP Cameras send the data to a Network Video Recorder (NVR). They use ethernet cables to transmit the data.
As the entire camera system is connected to the network, you can technically view the videos on any computer on the same network.
Nowadays, digital security cameras even have wireless connectivity. Simply place the camera at any location and connect it to the Wi-Fi network. There is no need to use any cables or wires.
Content created and supplied by: Kwajaffa (via Opera News )
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