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DTV - Digital TV introduction

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Digital TV - evolution, status and challenges

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DTV - Digital TV introduction

  1. 1. Digital TV - evolution, status and challenges Champ Yen champ.yen@gmail.com
  2. 2. What is DTV?
  3. 3. Digital TV
  4. 4. Digital Broadcasting
  5. 5. What are involved with DTV today?
  6. 6. DTV History Overview Traditional DTV Connected DTV Smart DTV
  7. 7. Tears of the Time …
  8. 8. What are the points of DTV? Traditional DTV Connected DTV Smart DTV Functionality Connectivity Flexibility
  9. 9. Evolution - Display ● Resolutions ○ 480p => 720p => 1080p => 4K2K ● Frequency ○ 30Hz => 60Hz => ... => 480Hz ● Stereo View (3D Display) ● Composition Layers ○ 2 => multiples ● Colors ○ 8bit => 10bit
  10. 10. Evolution - Display 40 inch 50 inch 60 inch
  11. 11. Evolution - Display resolution does matter!
  12. 12. Size, Distance & Resolution https://www.synopsys.com/Company/Publications/SynopsysInsight/Pages/Art3-hdmi-2.0-IssQ3-13.aspx?cmp=Insight-I3-2013-Art3
  13. 13. What is Composition?
  14. 14. What are the > 30/60Hz Frequencies?
  15. 15. Evolution - input interface ● composite video connector ● S-Video ● D-Sub/DVI ● HDMI/MHL ● WIFI Display/Miracast
  16. 16. Evolution - Playback Capability ● DVB stream ● Files ○ USB/Discs ○ Network (NAS/DLNA) ● Specific Services ○ Netflix ○ Youtube, Spotify
  17. 17. Why is media type important? ● data throughput ● latency ● random access ● reliability ● error rate
  18. 18. Evolution - Playback Capability ● MPEG-1/2 ● MPEG-4 ● RealVideo ● WMV ● H.264/AVS ● WebM VP8/VP9 ● HEVC
  19. 19. Evolution - Audio ● DTS/Dolby ● Bitrate: ○ 128kbps => 384kbps => ... => lossless ● Channels ○ stereo => 5.1 => 7.1 …
  20. 20. Evolution - Connectivity ● IR remote ● USB ● Ethernet ● Bluetooth ● WIFI
  21. 21. Platforms ● toolchain, api, driver, scalability, extensibility. ● Real-Time OS ● Linux ○ vendor-specific ○ webOS ○ Tizen ○ Android
  22. 22. Evolution - Hardware ● Processor ○ single => dual => quad ● DRAM ○ SDRAM => DDR => DDR2 => DDR3 ○ MB => GB ● HW IPs ○ GPU ○ DSP ○ Video decoder / encoder ○ etc (eg.: scaler, MEMC)
  23. 23. Why do DTVs need powerful HW? ● Computation ● Bandwidth ● Latency ● Resolution ● 3D
  24. 24. Problem of Connected TV ● Content ● Applications ● TV manufacturer focus on HW sales rather than SW functionality maintenance.
  25. 25. Problem of Smart TV Manufacturer Platform Apple Apple TV Google Android TV SONY Android TV Sharp SmartCentral Panasonic VIERA Samsung Samsung Smart TV LG WebOS NO SINGLE STANDARD, PLATFORM
  26. 26. Settop Box ● depends on content providers ● extend the capability of TV
  27. 27. The cooperative devices of DTV HDMI dongle Settop Box / DVR PC/NB NAS Gaming Disc Player Smartphone/Tablet
  28. 28. Current Situation of DTV in Mobile Era ● Even Google, Apple did NOT propose successful platform in DTV marketing. ● Smart devices (Phones, Tablets) ● IoT ● Linear => non-linear ● content => Internet
  29. 29. The influence of TV http://www.fool.com/investing/general/2014/07/28/2-factors-leading-to-the-demise-of-cable-tv.
  30. 30. The influence of TV http://www.forbes.com/sites/roberthof/2014/04/10/online-ad-revenues-blow-past-broadcast-tv-thanks-to-mobile-and-video/
  31. 31. The Challenges of DTV ● smart devices/APPs ● Wireless/Mobile Network ● MOD/VOD ● Controller
  32. 32. The Power of Smartphone/Tablet.
  33. 33. The Challenges of DTV - remote control The remote controller design may be a key point of SmartTV.
  34. 34. Q & A
  • wiliwe

    Feb. 19, 2017
  • KylinShih

    Oct. 21, 2015
  • jazzwang

    Oct. 18, 2015

Digital TV - evolution, status and challenges

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