With end-users looking for maximum benefit from their investment in security, a major objective to the success of any video surveillance system is to seek ways in which it can interact with other security systems. A major trend we are seeing at the moment is linking CCTV with Access Control systems. The opportunity to pass video, data or alarm information between these systems has obvious operational benefits. As well as providing visual verification of anyone attempting to gain access to restricted areas, there is also an opportunity to obtain valuable management information such as time and attendance records.
For end-users to have confidence in the information provided by a video surveillance system and an access control system working in harmony, it is obviously important that access control events and alarms can be reliably and consistently synchronised with the relevant video. Until now there has not been a low cost method of doing this and for many years users have suffered the frustration of finding that the video they have retrieved from a DVR relates to an event that occurred several seconds or even minutes before or after the actual event they wished to view.