1 / 18

Insights in DVB-T

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

cruz-bridges
Download Presentation

Insights in DVB-T

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Insights in DVB-T

  2. 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

  3. 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

  4. 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

  5. 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

  6. 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

  7. The Technology

  8. 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

  9. The Technology • How DVB works • MPEG-2 describes Multiplexing too • Audio, Video, Add-on Datas

  10. 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

  11. Analog DVB-S The Technology

  12. 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 ;)

  13. 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

  14. The Technology • The Roadmap of DVB-T • 2005 • Halle/Leipzig • Erfurt/Weimar • Mainz/Wiesbaden/Frankfurt • Ludwigshafen/Mannheim • Stuttgart • Nürnberg • München • 2010 Everywhere in Germany

  15. 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

  16. In the End… …thanks for your attention !

  17. 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 ;)

  18. Questions ?

More Related