Digital TV - evolution, status and challenges

1. Digital TV - evolution, status and challenges
Champ Yen
champ.yen@gmail.com

2. What is DTV?

3. Digital TV

4. Digital Broadcasting

5. What are involved with DTV today?

6. DTV History Overview
Traditional DTV Connected DTV Smart DTV

7. Tears of the Time …

8. What are the points of DTV?
Traditional DTV
Connected DTV
Smart DTV
Functionality
Connectivity
Flexibility

9. Evolution - Display
● Resolutions
○ 480p => 720p => 1080p => 4K2K
● Frequency
○ 30Hz => 60Hz => ... => 480Hz
● Stereo View (3D Display)
● Composition Layers
○ 2 => multiples
● Colors
○ 8bit => 10bit

10. Evolution - Display
40 inch 50 inch 60 inch

11. Evolution - Display
resolution does matter!

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. What is Composition?

14. What are the > 30/60Hz Frequencies?

15. Evolution - input interface
● composite video connector
● S-Video
● D-Sub/DVI
● HDMI/MHL
● WIFI Display/Miracast

16. Evolution - Playback Capability
● DVB stream
● Files
○ USB/Discs
○ Network (NAS/DLNA)
● Specific Services
○ Netflix
○ Youtube, Spotify

17. Why is media type important?
● data throughput
● latency
● random access
● reliability
● error rate

18. Evolution - Playback Capability
● MPEG-1/2
● MPEG-4
● RealVideo
● WMV
● H.264/AVS
● WebM VP8/VP9
● HEVC

19. Evolution - Audio
● DTS/Dolby
● Bitrate:
○ 128kbps => 384kbps => ... => lossless
● Channels
○ stereo => 5.1 => 7.1 …

20. Evolution - Connectivity
● IR remote
● USB
● Ethernet
● Bluetooth
● WIFI

21. Platforms
● toolchain, api, driver, scalability, extensibility.
● Real-Time OS
● Linux
○ vendor-specific
○ webOS
○ Tizen
○ Android

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. Why do DTVs need powerful HW?
● Computation
● Bandwidth
● Latency
● Resolution
● 3D

24. Problem of Connected TV
● Content
● Applications
● TV manufacturer focus on HW sales rather
than SW functionality maintenance.

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. Settop Box
● depends on content providers
● extend the capability of TV

27. The cooperative devices of DTV
HDMI dongle
Settop Box / DVR
PC/NB
NAS
Gaming
Disc Player
Smartphone/Tablet

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. The influence of TV
http://www.fool.com/investing/general/2014/07/28/2-factors-leading-to-the-demise-of-cable-tv.

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. The Challenges of DTV
● smart devices/APPs
● Wireless/Mobile Network
● MOD/VOD
● Controller

32. The Power of Smartphone/Tablet.

33. The Challenges of DTV
- remote control
The remote controller
design may be a key
point of SmartTV.

34. Q & A