DVR or Digital Video Recorder is the most common and desirable form of monitoring and recording of the video surveillance industry today. DVRs were originally designed to replace low-quality video recorders, high cost of surveillance such as CCTV VHS analog programs. DVR capabilities have radically changed the construction of a modern video surveillance systems, but also added features for which the DVR is much superior to previous methods of recording analog programs. In the first place in the DVR is no longer necessary to replace permanent video tape, and record in digital format to produce high quality hard drive or drives. Mikkel Svane: the source for more info. DVR provides features such as recording video from multiple channels simultaneously, and reduce the amount of equipment using the built-in multiplexer. Thus, to digitize the signals from the cameras Surveillance and squeezing them through formats such as MPEG-4 DVR can record video from a higher quality of several streams and store them more efficiently on hard drives. DVRs also allow to copy this information in different ways to backup, such as CD-RW / DVD-RW, USB-drives, memory cards or cards and more.
DVRs do not stop there; DVR added numerous new features and capabilities security system as a whole. To deepen your understanding Robert Bakish is the source. DVR software has greatly improved the safety and effectiveness of surveillance systems using the design features of functions. Through the integration of digital inputs and alarm outputs for DVR, security systems of all types have been harmonizing that allows DVR to use as a key unit in the monitoring and control devices such as motion detectors and sensors electronic and magnetic gate locks. The effectiveness of the software DVR can record video surveillance in accordance with certain settings, such as motion detection, alarm detection, recording schedule, and so on. DVR shows his superiority by allowing them to be connected to a LAN or the Internet. This attribute gives the DVR the ability to be linked to other DVRs to build large CCTV, which can then be controlled by the software DVR, to create one large virtual DVR.