SMRI-17A | Product Information and Description | 
| * Shell: plastic panel, with pure metal soleplate and wall-mount board * Super Wide Viewing Angle * CF card Supportable * JPG, MP3, MPEG1/2/4 Mode Supportable * Turn on/off Automatically * Resolution: 1280×1024 * Input: 100~240VAC, 50/60Hz * Working pressure : 12VDC/24VDC * With CF card protected device |
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SMRI-26A | Product Information and Description | 
| * Shell: plastic panel, with pure metal soleplate and wall-mount board * Super Wide Viewing Angle * CF card Supportable * JPG, MP3, MPEG1/2/4 Mode Supportable * Turn on/off Automatically * Resolution: 1366×768 * Input: 100~240VAC, 50/60Hz * Working pressure : 12VDC/24VDC * With CF card protected device * TV function |
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Net working Central processing unit
Size option: 7 inch, 10.4inch
User terminal option : 20units, 30units, 50units, 70units, 150units |
Download and streaming video on demand systems provide the user with a large subset of VCR functionality including pause, fast forward, fast rewind, slow forward, slow rewind, jump to previous/future frame etc. These functions are usually referred to as "trick modes". For disk-based streaming systems which store and stream programs from hard disk drive, trick modes require additional processing and storage on the part of the server, because separate files for fast forward and rewind must be stored. Memory-based VOD streaming systems have the advantage of being able to perform trick modes directly from RAM, which requires no additional storage or CPU cycles on the part of the processor.
It is possible to put video servers on LANs, in which case they can provide very rapid response to users. Streaming video servers can also serve a wider community via a WAN, in which case the responsiveness may be reduced. Download VOD services are practical to homes equipped with cable modems or DSL connections. Servers for traditional cable and telco VOD services are usually placed at the cable head-end serving a particular market as well as cable hubs in larger markets. In the telco world, they are placed in either the central office, or a newly created location called a VHO or "Video Head-End Office". |
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Video on demand (VOD) systems allow users to select and watch video and clip content over a network as part of an interactive television system. VOD systems either "stream" content, allowing viewing in real time, or "download" it in which the praogram is brought in its entirety to a set-top box before viewing starts. The latter is more appropriately termed "store and forward". The majority of cable and telco based VOD systems use the streaming approach, whereby a user buys or selects a movie or television program and it begins to play on the television set almost instantaneously.
Nowadays, the term often encompasses a broader spectrum of delivery devices, referring not only to set-top-boxes but also computers, mobile phones and indeed any system that can receive on-demand audio-visual content over a network. Many television networks offer free video content (often what is shown on the station itself) for free, (such as the Australian Broadcasting Corporation[1],) or for a small fee. (Whether or not this is true video on demand is debatable |
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