Video recorder (NVR, DVR, etc.)

Video recorder (NVR, DVR) design resources and block diagram

Description

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A digital video recorder (DVR) and digital video server (DVS) are appliances used in video surveillance. These appliances take the analog video signals from multiple analog surveillance cameras and digitize them. A processing engine encodes the video streams in digital formats such as H.264, motion JPEG, MPEG-4 or proprietary codecs to allow for data storage or transmission.

While the DVR is designed to store and view this video stream locally, the DVS sends the encoded video to the larger security network using the TCP/IP protocol. Higher performance systems also have video content analysis (VCA) capabilities allowing for the automatic detection of motion, crossing of virtual fences, etc.

DVRs and DVSs are used to upgrade existing security systems, which are based on analog surveillance cameras. Replacing tape-based VCRs, the DVR/DVS automates the storage of surveillance data and enables remote access to surveillance installations via TCP/IP networks. DVRs/DVSs typically have 4-, 8- or 16-input channels. With further integration, the channel count will increase to 32, 64 and beyond.

With the advent of IP cameras, systems that accept both analog and digital formats are advantageous as the installed analog camera market base still dominates. For this reason, Hybrid DVRs are available today. These appliances are versatile video recording devices that also must have the capability to perform storage and VCA functions.

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Technical documents

Application notes & user guides

Application Notes (10)

Title Abstract Type Size (KB) Date Views
HTM 8 KB 19 Mar 2015 0
HTM 8 KB 06 Oct 2011 0
HTM 8 KB 18 May 2011 0
HTM 8 KB 01 Mar 2011 0
HTM 9 KB 29 Apr 2010 0
HTM 8 KB 11 Apr 2010 0
HTM 9 KB 09 Dec 2009 0
HTM 8 KB 25 Nov 2009 0
HTM 9 KB 10 Sep 2009 0
HTM 9 KB 17 Jul 2008 0

Tools & Software

Name Part # Company Software/Tool Type
DP83630 Evaluation Demo Board DP83630-EVK Texas Instruments Evaluation Modules & Boards
DP83822 10/100 Mbps Ethernet PHY Evaluation Module DP83822EVM Texas Instruments Evaluation Modules & Boards
DP83867IRPAP-EVM 1000M/100M/10M Ethernet PHY Evaluation Module DP83867IRPAP-EVM Texas Instruments Evaluation Modules & Boards
PHYTER DUAL Industrial Temp 10/100 Mb/s Dual Port Ethernet Transceiver EVM DP83849IVS-EVK Texas Instruments Evaluation Modules & Boards
PHYTER® Industrial Temperature Single Port 10 100 Mbs Ethernet Physical Layer Transceiver DP83848I-POE-EK Texas Instruments Evaluation Modules & Boards

Product bulletin & white papers

Product Bulletin (1)

Title Abstract Type Size (MB) Date Views
PDF 515 KB 09 Nov 2012 0

White Papers (2)

Title Abstract Type Size (MB) Date Views
PDF 2.01 MB 30 May 2012 0
PDF 94 KB 16 Jun 2011 0

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