Video Capture Boards ( add-in boards for computers) 
Video Catcher 16 Series 
 Video catcher Elite Series
Video catcher  (high speed) 

Digital Video Recorders (DVRs)
deltavision 1016
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With today's Video Capture Boards ( add-in boards for computers) and Digital Video Recorders (DVRs), the multiplexing is performed by the video capture boards, recording is done on the computer hard disk and camera images are displayed on the computer monitor. 
Recording need not be continuous but can be accomplished only when motion is present in a camera field, at pre-set times or on receipt of an alarm signal from an alarm system. 
Remote computer users can dial-in via modem, access over a Local Area Network or over the Internet
Video Catcher is a video capture card using the high band width PCI bus as the basic backbone. Recording and display speed is optimized with the latest compression techniques. It can be used as a:

Video Multiplexer

Digital Time Lapse Recorder

Alarm Monitor

Video Motion Detector

Remote Video Monitor

All share the same common features and comes with minimum of four video input. Each series is then tailored to provide special features for various applications.

DVR Video Surveillance benefits 

-Homeowners can identify who is at the door, check on the baby or check the house if they are away.
-Small Businesses can prevent or identify shoplifters or burglars and keep an eye on the business from home. Sadly, today, employee theft is now higher in retail than customer theft and monitoring    retail employees is becoming necessary.
-Industry & Research can monitor processes as well as maintaining security surveillance .
-Education and Government can keep an eye on trouble spots.