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Insights in DVB-T. Content. Introduction Historical background Objectives of Digital TV What is DVB ? The Technology Why Digital ? How DVB-T works What I have to expect ? What I need The Roadmap. Introduction. Historical background Japan is using MUSE

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content
Content
  • Introduction
    • Historical background
    • Objectives of Digital TV
    • What is DVB ?
  • The Technology
    • Why Digital ?
    • How DVB-T works
    • What I have to expect ?
    • What I need
    • The Roadmap
introduction
Introduction
  • Historical background
    • Japan is using MUSE
    • 1991 first Discussions in Germany
    • European DVB-Project founded in 1993
    • At the same Time MPEG works on Encoding Std.
    • DVB-Project decides to use MPEG-2
    • Today: 300 Organisations from 37 Lands
      • Common Carrier
      • Manufacturers
      • Broadcast Stations
      • Authorities
introduction1
Introduction
  • Objectives of Digital-TV
    • Primary Objectives like HDTV changed
    • Now:
      • Multiplication of programs which can be sent over a transmission line.
      • DTVB enables Audio transmissions
      • DTVB enables flexible choice of Quality
      • Encryption can be used for Pay-Services
      • DTVB can be used as Data Transfer Method
introduction2
Introduction
  • What is DVB ?
    • Describes Digital Video Broadcasting Standards
    • Most used Standard for Digital Television
    • Standards like (in this order):
      • DVB-S for Satellite Transmissions
      • DVB-C for Cable Transmissions
      • DVB-T for Terrestrial Transmissions
the technology
The Technology
  • Why Digital ?
    • Digital Technology‘s displace Analog
    • Analog Receiving is rarely "Perfect"
    • Interferences
      • Mountains
      • Buildings
      • Forrest’s
      • other Emitters
    • Few Programs
    • DVB-T uses COFDM
      • Informations divided on many Frequencies
      • Along-sent Error Corrections
      • Common Frequency Broadcasting
the technology2
The Technology
  • How DVB works
    • Playout-Centers sent Data Containers
    • Data Containers with different size
      • DVB-S and DVB-C  ~ 40 Mbit/s
      • DVB-T  ~ 15 Mbit/s
the technology3
The Technology
  • How DVB works
    • MPEG-2 describes Multiplexing too
    • Audio, Video, Add-on Datas
the technology4
The Technology
  • What I have to expect ?
    • You can use very small Antennas
    • You can watch TV in your Car
    • Enough Signal Power  nearly perfect Picture
    • Less Signal Power  a black Screen
    • Regardless…
      • not necessarily a better Picture
      • Some Stations use old Encoders
      • Rarely a Dolby-Digital Soundtrack
the technology6
The Technology
  • What I need
    • A new Set-Top-Box for each Device…paid by yourself
    • DVB-C Receivers can NOT be used !
    • A Dolby Digital Receiver if you wish
    • That‘s all ;)
the technology7
The Technology
  • The Roadmap of DVB-T
    • 4. November 2004 successfully adaptedin Berlin-Brandenburg
    • 2004
      • Hannover/Braunschweig: 24. Mai 2004
      • Bremen/Unterweser: 24. Mai 2004
      • Köln/Bonn: 24. Mai 2004
      • Hamburg/Lübeck: 8. November
      • Kiel: 8. November
      • Düsseldorf/Ruhrgebiet: 8. November
the technology8
The Technology
  • The Roadmap of DVB-T
    • 2005
      • Halle/Leipzig
      • Erfurt/Weimar
      • Mainz/Wiesbaden/Frankfurt
      • Ludwigshafen/Mannheim
      • Stuttgart
      • Nürnberg
      • München
    • 2010 Everywhere in Germany
my opinion
My Opinion
  • Generally
    • Quite a good thing
    • Advantages like EPG and much more Programs
    • But there are no reasons to wait…
    • You can use DVB-S instead
  • In Future
    • Interactive Contents (Backchannel required)
    • Eventuelly HDTV
in the end
In the End…

…thanks for your attention !

5 references
5. References
  • Literature
    • Digitale Fernsehtechnik – Datenkompression und Übertragung für DVBInternetfrom Ulrich Reimers (Springer Publishing)
  • Internet
    • www.dvb.org
    • www.ueberall-tv.org
    • and www.google.de - www.heise.de of course
    • dict.leo.org ;)
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