Abus TVVR33004 User Manual

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Abus TVVR33004 User Manual Manual pdf 60 page image

Glossary125GlossaryTechnical terms used16:9Cinema orientated aspect ratio for wide-screen displays.Screen diagonalSize information for displays: Distance between thebottom left-hand corner to the top right-hand corner – ininches or centimetres.BrowserProgram for viewing websites on the World Wide Web.CIF'Common Intermediate Format'.Originally intended for conversion of PAL to NTSCstandard. CIF equates to a video resolution of 352 x 288pixels, 2 CIF 704 x 288 pixels, 4 CIF 704 x 576 pixels.DDNS'Dynamic Domain Name System Entry'A network service that keeps and updates the IPaddresses of its clients in a database.DHCP'Dynamic Host Configuration Protocol'A network protocol that enables the automaticincorporation of devices (clients) into existing networks.As such, DHCP servers (such as internet routers)allocate the IP address, the network mask, the gateway,the DNS server and, if necessary WINS serverautomatically. The client only has to be set to obtain theIP address automatically.DomainDomains (name space) that identify Internet pages (e.g.www.abus-sc.de).Dual streamDual stream designates a video transmission method. Ahigh resolution recording is made along with a lowresolution transmission, e.g. via the network.DVRDigital Video Recorder; a device for recording variousvideo and audio sources (analogue, digital). The data iscompressed for recording and stored on hard disk drives.CVBS"Colour, Video, Blanking and Synchronisation" signal.The most simple variant of video signals, also called"Composite Signal". Picture Quality is comparatively low.H.264(MPEG-4 AVC); standard for high-efficiency compressionof video signals. Used in such things as Blu-ray discs orvideo conferencing systems.HDD'Hard Disk Drive', hard disk (magnetic disk store)Digital data store in computers or NVRs.GIGABYTEUnit of storage capacity for storage media (HDD, USB,SD/MMC cards).HDVRHybrid DVR, DVR for recording from analogue camerasand network cameras.http'Hypertext Transfer Protocol';A process for data transfer across networks. Mainly usedfor the presentation of websites in a browser.INTERLACEDLine skip procedureIP addressAn address on a computer network based in the internetprotocol (IP), this enables various devices to beaddressable on the network and individually accessible.JPEGLow-loss compression process for photos. Most digitalcameras store their pictures in JPEG formatMPEGAbbreviation for Moving Picture Experts GroupageThis is used as an international standard for thecompression of moving pictures. On some DVDs theaudio signals are compressed and recorded in thisformat.NTPNetwork Time ProtocolA process for time synchronisation across networks. AlsoSNTP (Simple Network Time Protocol) that represents asimpler form.NTSCColour television standard in the USA. The processdiffers in certain details from the European PAL system:An NTSC full screen consists of 480 visible lines and atotal of 525 lines. Sixty half images are displayed persecond. Compared with PAL, the system is moresusceptible to colour distortions.

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