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What is DTV?
Digital TV
Digital Broadcasting
What are involved with DTV today?
DTV History OverviewTraditional DTV Connected DTV Smart DTV
Tears of the Time …
What are the points of DTV?
Traditional DTV
Connected DTV
Smart DTV
Functionality
Connectivity
Flexibility
Evolution - Display● Resolutions
○ 480p => 720p => 1080p => 4K2K● Frequency
○ 30Hz => 60Hz => ... => 480Hz● Stereo View (3D Display)● Composition Layers
○ 2 => multiples● Colors
○ 8bit => 10bit
Evolution - Display
40 inch 50 inch 60 inch
Evolution - Displayresolution does matter!
Size, Distance & Resolution
https://www.synopsys.com/Company/Publications/SynopsysInsight/Pages/Art3-hdmi-2.0-IssQ3-13.aspx?cmp=Insight-I3-2013-Art3
What is Composition?
What are the > 30/60Hz Frequencies?
Evolution - input interface
● composite video connector● S-Video● D-Sub/DVI● HDMI/MHL● WIFI Display/Miracast
Evolution - Playback Capability
● DVB stream● Files
○ USB/Discs○ Network (NAS/DLNA)
● Specific Services○ Netflix○ Youtube, Spotify
Why is media type important?
● data throughput● latency● random access● reliability● error rate
Evolution - Playback Capability
● MPEG-1/2● MPEG-4● RealVideo● WMV● H.264/AVS● WebM VP8/VP9● HEVC
Evolution - Audio
● DTS/Dolby● Bitrate:
○ 128kbps => 384kbps => ... => lossless● Channels
○ stereo => 5.1 => 7.1 …
Evolution - Connectivity
● IR remote● USB● Ethernet● Bluetooth● WIFI
Platforms
● toolchain, api, driver, scalability, extensibility.● Real-Time OS● Linux
○ vendor-specific○ webOS○ Tizen○ Android
Evolution - Hardware
● Processor○ single => dual => quad
● DRAM○ SDRAM => DDR => DDR2 => DDR3○ MB => GB
● HW IPs○ GPU○ DSP○ Video decoder / encoder○ etc (eg.: scaler, MEMC)
Why do DTVs need powerful HW?
● Computation● Bandwidth● Latency● Resolution● 3D
Problem of Connected TV
● Content● Applications● TV manufacturer focus on HW sales rather
than SW functionality maintenance.
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
Settop Box
● depends on content providers● extend the capability of TV
The cooperative devices of DTVHDMI dongle
Settop Box / DVR
PC/NB
NAS Gaming
Disc Player
Smartphone/Tablet
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
The influence of TV
http://www.fool.com/investing/general/2014/07/28/2-factors-leading-to-the-demise-of-cable-tv.aspx
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/
The Challenges of DTV
● smart devices/APPs● Wireless/Mobile Network● MOD/VOD● Controller
The Power of Smartphone/Tablet.
The Challenges of DTV- remote control
The remote controller design may be a key point of SmartTV.
Q & A
