Question
In: Civil Engineering
What is the main limitation of a digital frame camera when compared with an analogue one?
What is the main limitation of a digital frame camera when compared with an analogue one?
Solutions
Expert Solution
The main difference between analog CCTV and digital (IP) CCTV is the method by which video is recorded and delivered. Analog cameras record images and then send the signal over a coaxial cable to a DVR (Digital Video Recorder). The DVR converts the video from analog to digital signals, compresses the file, and stores it on a hard drive. Monitors need to be hooked up to the DVR to view the video, or the DVR can be connected to a router and modem to broadcast it over the internet through an internal network.
Digital security cameras on IP-based CCTV systems, on the other hand, record the images digitally to begin with. Then, they can receive and send data over a computer network rather than going through a DVR first. This method nixes the boxy setup with multiple ports in favor of an NVR, which is typically a simple software program that can be run on a device dedicated solely to operating the NVR or on a complete system.
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