What are some of the commonly used terms in DVR / DVMS systems?
Frame Rate: This refers to the image or a frame as in a picture. The rate is measured in seconds, i.e. number of frames per second (FPS). The higher the FPS the smoother the picture in terms of real time. Resolution: This defines the clarity of the image. The higher the resolution the higher the clarity of the picture. In the DVR/DVMS there is record rate and display rate. Standard resolution for the United States is 640×480 for CCD/CCTV camera technology. This is known as FULL frame, where as 320×240 is known as HALF frame and is the recording resolution of the majority of the digital recorders in the marketplace. Bit Rate: The amount of compressed data. For some compression technology higher bit rate means better picture quality. Channel: In this industry channel is referred to cameras or way, i.e., number of cameras or channels/ways. A 4 channel card or a 4 way card, etc., is the same as a card which can take 4 cameras. Compression Method: There is software compression and hardware
