By Roy Hoffman

Data compression is now fundamental to services and products of many industries together with pcs, communications, healthcare, publishing and leisure. This precious source introduces this zone to details process managers and others who have to know how it's altering the realm of electronic platforms. in the event you recognize the expertise good, it finds what occurs whilst info compression is utilized in real-world functions and gives tips for destiny know-how development.

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Data compression alone cannot solve all storage and bandwidth limitations but must be used in combination with technology advances. • End users expect data compression to be transparent, to make products and services more affordable, and to enable innovative new products and services. • Data compression is essential to FAX, videoconferencing, computer tapes and disks, DBS television, and HDTV. • Data compression will continue to become more pervasive. 1 summarizes the bandwidth of some important information storage and transmission channels encountered throughout this book.

261 video coding standard. Standards may overspecify, leaving little room for innovation. Worse yet, a standard may specify little-used features and require they be implemented. This kind of standard results, it is argued, when the standards-making process drags on and on. One operable theory is that good standards are made expeditiously; bad standards are not-and the examples are numerous [Coy95]. That theory mayor may not be true. 261 the video coding standard for videoconferencing. 261 is quite free of overspecification; it addresses only picture decoding which allows considerable room for innovation in how pictures are encoded-even allowing two videoconferencing participants to negotiate and use a proprietary compression algorithm of their choosing [Port94, Trow94l!

Multimedia applications that use video, even compressed video, stress the storage capacity of personal computers (the clients) and larger computers (the servers) and stress the bandwidth of all but the fastest available networks and broadcast channels. Consequently, the multimedia applications that have appeared do not deliver all that interactive multimedia can offer, If video storage is required, CDROM is the only economical storage media currently available for personal computers. Because it is read-only, authoring applications like the ODe above, which require writable storage, are problematical.

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