This device transforms analog video signals from security cameras into digital format, suitable for storage on a hard drive. It also helps the user manage the stored video files, as well as providing motion detection settings and PTZ security camera control. DVRs can often be remotely accessed over the Internet.

Digital Video Recorders (same as PVR).

Digital Voice Recorder

Systems that store a moving picture as converting an analog to a digital signal and using MPEG. See MPEG.

Digital Video Recorder

Also known as a personal video recorder (PVR) or hard disk video recorder. DVRs store recordings on a large hard drive, and most let you pause and replay live television. When used with an electronic program guide service, you can find and record shows automatically.

Digital Video Recorders are the equivalent of analog VCRs or Video Cassette Recorders. Though most DVRs in the market right now use internal hard drives to record video from a television signal, some models are beginning to sport drives that can record directly to DVD recordable discs.