(redirected from Digital video recorder)
Also found in: Dictionary, Acronyms, Wikipedia.
Related to Digital video recorder: DVR, Digital video camera


(1) (Digital Video Recorder) A device that records video from up to a dozen or more surveillance cameras onto a hard disk. The frame rate can be switched from real time to time lapse in order to save storage space. Digital recorders are more flexible than earlier analog VHS tape systems, and the video can be easily transmitted over a computer network. See CCTV.

(2) (Digital Video Recorder) Also known as a "personal video recorder" (PVR) or "hard disk recorder," a DVR is a consumer device that allows the viewer to pause and rewind any broadcast, cable or satellite TV program as well as record and play back selected programs (see live pause). An order of magnitude more flexible than earlier videocassette tape recorders (VCRs), an entire season of programs from one or more favorite series can be recorded.

DVRs may be built into the set-top box or replace the box using plug-in modules (see CableCARD). They store incoming digital TV signals on the hard disk as well as digitize analog TV into the MPEG-2 format. The video may be compressed to maximize storage space.

Part of the Service or Stand-Alone
The DVR periodically downloads channel program guide updates as well as software updates for the unit itself. When the DVR is integrated into the cable or satellite set-top box, the downloads ride the same medium as the TV service. When the DVR is stand-alone, the downloads come in via the home network.

Before the Turn of the Century
DVRs first came on the market in 1999 with products from ReplayTV and TiVo ( They quickly made the VCR obsolete for timeshifting TV programs, and Tivo became the DVR leader. ReplayTV was later acquired by SONICblue, D&M Holdings and eventually the DirecTV satellite TV service ( See cloud DVR, multi-room DVR sharing, live pause, DVD recorder and networked DVR. Contrast with NVR.

This earlier DVR from ReplayTV appears in front of the Find Shows screen, which enables a viewer to search for programming throughout the week by keyword. (Image courtesy of ReplayTV.)
References in periodicals archive ?
They aim to analyse and assess the suitability of CCTV digital video recorders to yield good quality images that can be retrieved quickly and easily by the police, and ultimately used in court.
2 -- color) (Warren Aguiling, a product specialist at Circuit City in Northridge, gives a demonstration Wednesday on how a TiVo digital video recorder works.
The RoadRecorder PRO is part of the SafeyNet[TM] Wireless Mobile Network, a comprehensive system that automatically collects video, audio and system-health data from onboard surveillance digital video recorders.
And unlike some of today's high-end universal remotes, the Harmony 1000 remote controls any device with an infrared receiver -- including VCRs, digital video recorders, high-definition televisions, and many household appliances.
EverFocus has established itself as one of the top security product manufacturers in the world over the past 10 years and with a full product offering, including digital video recorders, CCTV cameras, and electronic access control systems, it continues to be at the forefront of the electronic security industry.
Lockheed Martin Aeronautics Company has selected the Smiths Aerospace digital video recorder for the Greek F-16 Block 50 program with an option for future F-16 Block 50 aircraft foreign military sales.
Currently, Sony LocationFree technology allows users to connect a LocationFree base station to a variety of audio visual devices in the home--such as a set-top TV tuner, DVD player, and digital video recorder (DVR)--and then stream content from the Sony LocationFree Player Pak LF-PK-1 and LocationFree TV LF-X11 to Windows(R)-based personal computer or PSP(R) (PlayStation(R) Portable) system.
Mobile Digital Video Recorders and Locomotive Digital Video Recorders are designed for reliability in harsh mobile environments, while 4000 C Series recorders provide both IP and analog camera support for fixed platform deployments.
of South San Francisco, California, is expanding its line of video security products with high-capacity network digital video recorders, network surveillance cameras, and advanced surveillance control solutions.
Inside the bedrooms, for example, visitors will be able to watch Time Warner Cable digital video - with such technologies as Video on Demand, High-Definition Programming, Digital Video Recorders as well as iTV polling through NY1 News.

Full browser ?