Transcript IEX8175 RF Electronics Avo Ots telekommunikatsiooni õppetool, TTÜ raadio- ja sidetehnika inst.

IEX8175 RF Electronics
Avo Ots
telekommunikatsiooni õppetool,
TTÜ raadio- ja sidetehnika inst.
[email protected]
1
QoS
2
Problem
3
TV studio
Kaamera
juhtseade
SDI
saatja
SDI
vastuvõtja
4
Halvem
kvaliteet
Parem
kvaliteet
Keerukus
Pakkimise tegur
Pakkimise tegur
Quality
Halvem
kvaliteet
Parem
kvaliteet
Latentsus
5
MPEG
Edastuse juhtimine
Täiskiiru- Teisendus
4:2:2 ->
sega
andmed 8-bit 4:2:0
Info kadu.
Andmehulk
vähenes.
Kvanditud andmed
DCT
Pole
info
kadu.
Andme
hulk
sama.
Kvantimine
Andme
hulk
vähene
s
(info
kadu)
Entroopia
kodeerimine
Puhver
Pakitud
andmed
Andmehulk
vähenes
(pole
info
kadu)
6
Content
Download
On-demand
Clips
Carousel
Push and store
Subscription
Streaming
Live
Non-live
Pay TV program
Video on-demand
ˇ
Free TV program
7
Streams
Broadcast, DVB-H
Unicast, 3G, LTE
MBMS, 3G, LTE
Mobile Network
Broadcast Network
IPTV, 3G, LTE
Fixed Network
Mobile Network
Mobile Network
8
IP Datacast (data broadcasting)
Application Layer
Service Purchase
&Protection
Presentation Layer
Session Layer
ESG
Transport Layer
IP-Datacast
Content
Delivery
Network Layer
Content
Formats
QoS
PSI/SI
Data Link Layer
Physical Layer
DVB-H
DMB
UMTS
GSM
9
Protocols
10
DVB-T & DVB-H
DVB Multiplexer
-For LP MPEG-2
LP
MPEG-2 TV Service
MPEG-2 TV Service
MPEG-2 TV Service
MPEG-2 TV Service
e
DVB-H Time Slice Terminal
MUX
-Support for Time Slicing
-Power saving
HP
Full DVB-H Terminal
DVB-H IPE
IP-backbone
-Support both TS and MPE-FEC
-Power saving and performance
-Time Slicing
-MPE-FEC
DVB-T Tx
-DVB-H signalling
11
Multipleks
Programm 1
Programm 2
Programm 3
Audio
Video
PTS/DTS
Audio
Video
PTS/DTS
Audio
Video
PTS/DTS
MUX
Transpordivoog
Transport stream
PAT
PMT
NIT
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New media divide
• Kasutajad haldavad oma meedia kasutust.
– “Minu aeg” (mitte reaalaeg) on kõige
kiiremini kasvav meedia kasutus.
– “I want what I want, when I want it, the way I
want it.”
• Reaalaeg vs “minu aeg”
Real-time vs. “my time.”
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TV-Anytime
Networks
Provider
Gateway
Provider
In-home
Network
PVR
removable
media
Networks
control
Gateway
NDR
control/content
In-home
Network
PVR
DVD
service providers
content providers
storage
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Universal Home API
•Application portability over multiple HW/SW platforms
•Open Source implementation: UHAPI4Linux
content
manager
ISDB-BML
OCAP
PVR
web-DVD
Memory Card
Pictures
discs
Internet
Browsing
Video
editing
MHP
Picture
Browsing
EPG
MHEG
Operating System and UNIVERSAL HOME API
streaming A/V
software
streaming A/V
software
streaming A/V
software
Architecture 1
Architecture 2
Architecture 3
Company A
Company B
Company C
…
streaming A/V
software
Architecture 4
Company D
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