Bosch LTC-1311-20 Configuration Manual page 180

180 en | Glossary
User privilege
Particular operations that a user has been granted the right to perform.
User profile List of information concerning a particular user, such as user type, E-mail, etc. Each user
profile is identified by a unique user name.
User tree See Logical Tree.
Video compression
Method for reducing the size of video files. The higher the compression, the lower the quality.
Video compression reduces the spatial and the temporal redundancy in video data. For
reducing spacial redundancy, image compression is used. The frame of a single point in time is
compressed as an image file. For reducing temporal redundancy, motion compensation is
used. Motion compensation uses the fact, that two consecutive frames are nearly identical.
Hence, only one frame is stored completely. For the next one, only the difference is stored.
This is repeated after a given number of frames (GOP).
Video format Resolution of the video. There are typically four video resolutions available: QCIF, CIF, 2CIF
and 4CIF. See Video resolution.
Video resolution Specification of horizontal and vertical pixels transferred with video signals.
PAL:
1CIF = 352 x 288
2CIF = 704 x 288
4CIF = 704 x 576
QCIF = 176 x 144
NTSC
1CIF = 352 x 240
2CIF = 704 x 240
4CIF = 704 x480
QCIF = 176 x120
VIDOS NVR VIDOS Network Video Recorder. Software that stores the audio and video data of IP encoders
on a RAID 5 disk array or any other storage medium. VIDOS NVR provides functions for
playback and retrieval of the recorded video. You can integrate cameras in your Bosch Video
Management System that are connected to a VIDOS NVR computer.
View Collection of cameras assigned to Image panes that you can recall for instant live viewing.
Image panes with maps or HTML files can be part of a View. Sequences cannot be part of a
View.
Virtual input Used for forwarding events from third-party systems to Bosch Video Management System.
VRM Video Recording Manager. Software package in Bosch Video Management System which
manages storing video (MPEG-4 SH++ and H.264) and audio data on iSCSI devices in the
network. VRM maintains a database containing the recording source information and a list of
associated iSCSI drives. VRM is realized as a service running on a computer in the Bosch Video
Management System network. VRM does not store data itself but distributes storage
capacities on iSCSI devices to the encoders, while handling load balancing between multiple
iSCSI devices.
VRM streams playback video and audio data from iSCSI to Operator Clients.
Configuration Client | V3 | 2010.07
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Configuration Manual
Bosch Video Management System
Bosch Sicherheitssysteme GmbH