Video Recorder (NVR, DVR, etc.)

Block diagram (SBD) for a Digital Video Recorder and Digital Video Server for HD video surveillance featuring video decoders and audio codecs which allows for storage of data, and enables remote access via TCP/IP networks.

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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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Application Notes (11)

Title Abstract Type Size (KB) Date Views
HTM 8 KB 19 Mar 2015 242
HTM 8 KB 10 Sep 2012 231
HTM 8 KB 06 Oct 2011 1560
HTM 8 KB 18 May 2011 227
HTM 8 KB 01 Mar 2011 194
HTM 9 KB 29 Apr 2010 147
HTM 8 KB 11 Apr 2010 200
HTM 9 KB 09 Dec 2009 130
HTM 8 KB 25 Nov 2009 458
HTM 9 KB 10 Sep 2009 511
HTM 9 KB 17 Jul 2008 1357

User Guides (3)

Title Abstract Type Size (KB) Date Views
htm 8 KB 04 Aug 2010 122
htm 8 KB 16 Nov 2009 110
htm 8 KB 07 Dec 2007 86

Selection and Solution Guides

Selection Guides (3)

Title Abstract Type Size (KB) Date Views
PDF 9.45 MB 16 Apr 2015 47109
PDF 5.57 MB 12 Aug 2014 4339
PDF 2.55 MB 10 Oct 2013 2915

Solution Guides (1)

Title Abstract Type Size (KB) Date Views
PDF 5.43 MB 15 Dec 2011 1693

Product Bulletin & White Papers

Product Bulletin (1)

Title Abstract Type Size (MB) Date Views
PDF 515 KB 09 Nov 2012 334

White Papers (4)

Title Abstract Type Size (MB) Date Views
PDF 2.01 MB 30 May 2012 761
PDF 2.5 MB 11 Apr 2012 419
PDF 94 KB 16 Jun 2011 96
PDF 150 KB 28 Aug 2009 348

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DaVinci 26 Jun 2013 7:12 PM
DM816x Device Evaluation 26 Jun 2013 7:12 PM
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