The security digital video recorder, security DVR and the latest computer software has made the PC an integral part of surveillance. In order to have a successful installation of a digital video surveillance system, you should educate yourself fully regarding the technology and the marketplace. Above all, use only qualified and experienced technical consultants to design and implement your security system.
The videocassette recorder (VCR) was the main tool used for video surveillance before the coming of digital video. There were some inherent problems with videocassette technology. First, was the limited amount of time that a videocassette tape could hold. Time lapse recording was used as a work around to this limitation. Regular live motion video is recorded at thirty frames per second. Time lapse reduces this to only one frame per second or even less. With time lapse recording, the tape needs changing every 4 to 5 days. Somebody has to remember to change the tape.
Parts of an incident will be missing from a video tape when recorded using time lapse recording. The physical condition of the video tape will deteriorate as it is used over and over again. Old tapes were likely to break or jam a machine. You can not manage operations remotely when using videocassettes. Somebody has to travel to the actual camera location and replace the video tape.
Video cassette recorders could merge the data from multiple cameras into one recording device using a multiplexer. A multiplexer has multiple inputs and a single output. Each camera view is shown on a small portion of the screen.
There were technical limitations with DVRs when they were first introduced that made them difficult to use for surveillance operations. With the coming of PC based digital video recording technology, the DVR has replaced videocassette as the preferred technology. There is no limit to the amount of data you can record. A PC based system uses special hardware and software to remotely administer your video surveillance. With the DVR time lapse recording is eliminated. You will capture the smallest details of every incident. You can use multiple cameras for various angles to be sure no area is unprotected.
It is clear that a PC based system is far superior to its videocassette predecessor. Tape jamming, signal loss and degaussing is eliminated. Recording to a hard drive means that unlimited amounts of video can be stored indefinitely. Hard drives never suffer any signal loss and no deterioration of quality over repeated uses. Automated operations of the system will ensure that no one will ever forget to push the record button. You will eliminate the hassle and cost of buying, replacing and storing cassette tapes.
There are many companies in the DVR surveillance marketplace. You should be very careful when selecting a company to work with. Take the time to fully assess your unique security needs. Discuss your security needs with several companies before selecting the most qualified and experienced.
The security digital video recorder, security DVR and the latest cutting edge video surveillance systems are a big improvement from video cassettes. You will be glad that you switched to a PC based DVR system. Make sure to use only experienced and qualified technicians when you design and implement your security surveillance systems.
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