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发表于 2006-12-26 09:32:55
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Publisher's Preface
Publisher's Preface
With more than 100 stations on the air, digital television is a reality in the
United States, but it hasn't been easy for broadcasters and manufacturers.
The government-mandated transition from analog to digital television has
been complicated with dozens of competing DTV transmission formats, as
well as equipment and programming issues.
To viewers, DTV means better pictures and sound, plus the potential for
interactivity, increased channels, personalized programming, and pay-perview
services. To broadcasters, advertisers, and manufacturers, DTV means
an unprecedented opportunity for business growth and technological
advancement.
Broadcast DTV is, however, just one facet of digital television, which has long
been central to high-end commercial post production and--more recently--
motion picture effects. The advent of compressed digital video has helped
established nonlinear editing and QuickTime for desktop computers. And
while broadcasters and cable industries work toward delivering DTV to the
home, digitally encoded programming is already there via direct broadcast
satellite receivers, DVD players, computer CD-ROMS, and the Internet.
In an effort to sort out these dramatic changes in the broadcast industry,
Michael Silbergleid, former Editor-in-Chief of Television Broadcast and now
President of The SilverKnight Group and Editor of Digital Television: The Site,
produced the first edition of this book in 1998. Continued developments in the
DTV industry, however, have prompted two updates of this text. Since the
second edition, Michael has been joined by one of Television Broadcast's
contributing editors and the ETV Field Editor for Government Video, Mark J.
Pescatore. Together, they have assembled an impressive group of writing
talents from different areas of the broadcast, video, and audio industries,
including professionals from the United Entertainment Media PSN family
(including contributors to Television Broadcast, Pro Sound News,
Videography, Government Video, and Digital Television: The Site). The result
is another timely, important book that the broadcast and teleproduction
industries can use as a resource in the often confusing world of DTV.
As we enter the new millennium, digital technology promises enormous
potential for commerce and communication. I hope this book improves your
understanding of the technology in ways that will be beneficial to your
business.
-Paul G. Gallo,
President and Publisher, HTUUnited |
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发表于 2006-12-25 13:13:51
