ABSTRACT
Video surveillance, more commonly called closed-circuit television (CCTV), is an industry that emerged in the 1970s as a viable commercial technology to deliver safety and security. In the many years since then, the industry has experienced its share of technology changes. As in any other industry, end users’ ever-increasing demands on products and solutions are driving this development, and evolving technologies are helping to support them. In the video surveillance market, the demands include:
Video surveillance systems started out as 100% analog systems and have gradually become digital, even though analog systems remain in use to some degree. Today’s fully digital systems, which are using network cameras and PC servers for video recording, have come a long way from the early analog tube cameras, which were connected to VCRs that required hand-operated tape switching.
