KRnet 2005

DMB Interactive Data BroadcastingDMB Interactive Data Broadcasting

1

2005. 6. 28.

Jihun ChaDigital Broadcasting Research DivisionBroadcasting Media Research Group

jihun@etri.re.kr

KRnet 2005 - 2 -

ContentsContents

Introduction to TIntroduction to T--DMBDMBII

Interactive data services on TInteractive data services on T--DMBDMBIIII

ConclusionsConclusionsIIIIII

KRnet 2005 - 3 -

Introduction to TIntroduction to T--DMBDMBII

KRnet 2005 - 4 -

What is TWhat is T--DMB ? DMB ?

Strong demand for TV services under mobile environments

T-DMB (Terrestrial Digital Multimedia Broadcasting)◆Mobile TV & multimedia service based on MPEG-4◆ AV services through terrestrial DAB framework

From ‘listening‘ to ‘watching while listening'◆ Small sized TV, PDA receivers and mobile phones◆ Complementary to terrestrial digital TV

DAB : Digital Audio Broadcasting

Changed from analogue to digital radio

Mobile broadcasting

CD quality audioWeather/ Stock informationT-commerce

Text & data service

Traffic info &Navigation

KRnet 2005 - 5 -

Receiving condition Receivable on a moving vehicle up to 200Km/h

Basic audio: DAB CD-quality stereo

Multimedia services Video: MPEG-4 AVC

– VCD-quality for 5 inch display (max. 352x288@30fps) Audio: MPEG-4 BSAC

– CD-quality stereo (max. 48 KHz sampling) Data service (Optional): MPEG-4 Systems

– Text & graphic – Provision of local and remote interactivity

What is required for TWhat is required for T--DMB?DMB?

RequirementsRequirements

KRnet 2005 - 6 -

What makes TWhat makes T--DMB? (1/2)DMB? (1/2)

DAB specification (EUREKA-147: Rec. ITU-R BS. 1114 System A) Bandwidth: 1.54MHz

Modulation: DQPSK/OFDM

Audio Program Service: MPEG-1,-2 Layer 2

Multiplexing: Eureka 147

Inner Error Correction Code: Convolution Code (4,1,7) Variable Rate

Multimedia specification Video : MPEG-4 Part 10 AVC (H.264) Audio : MPEG-4 Part 3 BSAC Data broadcasting : MPEG-4 BIFS Multiplexing : MPEG-4 SL + MPEG-2 TS Additional channel coding : Reed-Solomon (204, 188)

KRnet 2005 - 7 -

What makes TWhat makes T--DMB? (2/2)DMB? (2/2)

FIC: Fast Information ChannelFIC: Fast Information Channel

SI: Service InformationSI: Service Information

EurekaEureka--147147

Tra

nsm

issio

n F

ram

e M

ultip

lexe

r

CO

FD

M M

odula

tor/

Up-C

onve

rter

Mai

n Se

rvic

e M

ultip

lexe

r

HPA/C

hannel Filt

er

TimeInterleaver

ConvolutionalEncoder

EnergyDispersalScrambler

Video Multiplexer Stream

Mode

OptionalConditionalAccess

Scrambler

KRnet 2005 - 8 -

The structure of TThe structure of T--DMB multiplexer for video serviceDMB multiplexer for video service

OD/BIFS

Data ES

ES

ES

PSI Section

TS

KRnet 2005 - 9 -

How can THow can T--DMB be delivered? (1/3)DMB be delivered? (1/3)

Frequency range in Korea Two VHF TV Channels of 6MHz

Number of broadcasting services 1.5MHz FDM x 3 ensembles @ 6MHz

- 1 ensemble = a multiplexed stream @ 1.54 MHz

Possible No. of multimedia programs @ 6MHz※ Contents-dependent dynamic rate allocation

3 programs (1 program/an ensemble: up to 768 Kbps video)

6 programs (2 programs/an ensemble: up to 384 Kbps video)

9 programs (3 programs/an ensemble: up to 256 Kbps video)

KRnet 2005 - 10 -

How can THow can T--DMB be delivered? (2/3)DMB be delivered? (2/3)

Ensemble MUX

Ensemble ReMUX

ETI

ETI RF

EnReMUXManager

Conventional DAB T ransm itter

A/VSource

VideoES

Audio

ES

Video SLP,Audio SLP,

OD/BIFS SLP

*Outer Coder : RS Encoder + Conv . Interleaver

Sc

hedulin

g/

Co

ntro

l/M

onito

ring

MPEGAudio

Encoder

DataInserter

COFDMModulator/

Up-Converter

HPA/Channel

Filter

PAD(text, image, etc.)

N-PAD(file, stream, etc.)

MPEG-1/-2audio stream

DVB-ASIM4overM2

SI, MCI

Scheduling/Control/Monitoring s ignal

EnMUX

Manager

ServiceMUX

STI

OD/BIFSGenerator

IODGenerator

SL

Packetize

r

MPEG-4Video

Encoder

MPEG-4Audio

Encoder

OD/BIFS

IOD

AudioSource

M PEG-4 A/ V

Encoder

M4onM 2

BIFS : Binary Format for Scene

COFDM : Coded-Orthogonal Frequency Division MultiplexingDVB-ASI : Digital Video Broadcast Asynchronous Serial Interface ES : Elementary StreamETI : Ensemble Transport Interface

HPA : High Power AmplifierIOD : Initial Object DescriptorMCI : Multiplex Configuration InformationMPEG : Moving Picture Expert GroupN-PAD : Non-Programme Associated Data

OD : Object DescriptorPAD : Programme Associated DataRF : Radio FrequencySI : Service InformationSL : Sync Layer

STI : Service Transport InterfaceTS : Transport Stream

ETI

*OuterCoder

MPEG-4 Sys tems Encoder

DMB M edia P rocessor

Transmission systemTransmission system

KRnet 2005 - 11 -

How can THow can T--DMB be delivered? (3/3)DMB be delivered? (3/3)

MPEGAudio

Decoder

MPEG-1/-2layer II audio

tuner ADCOFDM

demodulator

MPEG

-2 T

SD

EM

UX

V HF IF

DACC

om

posito

rI2S

EnsembleDEMUX

MPEG-4Video

Decoder

MPEG-4Audio

Decoder

OD/BIFSDecoder

IODDecoder

RS+Conv. InterleaverDecoder

speakersSPDIF Digital

AMP

MPEG-4 onMPEG-2 TS

TerminalTerminal

KRnet 2005 - 12 -

Tentative service scheduleTentative service schedule

Selection of T-DMB multiplexer providers (2005. 3.)

Broadcasting license will be issued by MIC (2005. 6.)

AV and simple data services in Metropolitan Area (2005. 7.)

AV and simple data services in Metropolitan Area (Late 2006.)

Interactive data service (2006. 12.)

Bi-directional interactive service (2007. 12.)

CD quality music Multimedia

ServiceService

2005

CoverageCoverageSeoul Metropolitan Area

Two TV channels

Various data services, such as weather, stock, travel

2006

Nation-wide service :Local Channels Six areas

One TV channel

Navigation Interactive service

2006~

Nationwide Channel

After the end of analog TV(In 2010)

KRnet 2005 - 13 -

Service plan of multiplexer providers (1/2)Service plan of multiplexer providers (1/2)

법인명채널 구성 계획

(채널명-방송유형-전송용량)운용방법 방송분야

한국방송공사

KBS-Mobile 1 - TV - 544k 직접 사용 종합편성

KBS-Mobile 3 - 라디오 - 128k 직접 사용 음악전문

KMMB-R - 라디오 - 128k 임대 (케이엠엠비) 생활경제전문

OZIC - 라디오 - 128k 임대 (CJ미디어) 음악전문

KBS-Mobile 5 - 데이터 - 220k 직접 사용 종합편성

(주)문화방송

MBC DMB TV - TV - 544k 직접 사용 종합편성

MBC DMB 라디오 - 라디오 - 128k 직접 사용 종합편성

MBN 경제 라디오 - 라디오 - 128k 임대 (MBN) 경제전문

아리랑 영어 라디오 - 라디오 - 128k 임대 (국제방송교류재단) 한국문화전문

MBC DMB 데이터 - 데이터 - 220k 직접 사용 종합편성

(주)에스비에스

SBS DMB TV - TV - 544k 직접사용 종합편성

SBS DMB 라디오 - 라디오 - 128k 직접사용 종합편성

TBS DMB 라디오 - 라디오 - 128k 임대 (TBS-서울시) 교통전문

경기방송 DMB 라디오 - 라디오 -128k

임대 (경기방송) 문화․예술 전문

한겨레 DMB 데이터 - 데이터 - 96k 임대 (한겨레신문) 직업․교육 전문

LGT DMB 데이터 - 데이터 - 96k 임대 (LG텔레콤) 레저․엔터테인먼트 전문

SBS DMB 데이터 - 데이터 - 32k 직접사용신기술과 뉴서비스 개발/실험

(종합편성)

KRnet 2005 - 14 -

Service plan of multiplexer providers (2/2)Service plan of multiplexer providers (2/2)

법인명채널 구성 계획

(채널명-방송유형-전송용량)운용방법 방송분야

주식회사

와이티엔디엠비(가칭)

YTN 플러스 - TV - 512k 직접 사용 종합편성

TBN 한국교통방송 - 라디오 -160k

임대

(도로교통안전관리공단)

교통전문

Satio+ - 라디오 - 160k 임대

(Satio)음악

YTN 프리미엄 - 데이터 - 320k 직접 사용 종합편성

한국디엠비

주식회사(가칭)

한국DMB TV - TV - 544k 직접 사용 종합편성

i4U - 라디오 - 128k임대

(기독교방송)생활교양

Live4U - 라디오 - 128k임대

(뮤직시티미디어)

공연음악․문화 전문

한국DMB 데이터 - 데이터 - 348k 직접 사용 종합편성

케이엠엠비

주식회사(가칭)

KMMB - TV - 512k 직접 사용 종합편성

KBS Mobile2 -TV - 512k임대

(KBS)

가족문화

전문편성

KMMB data - 데이터 - 128k 직접 사용 종합편성

KRnet 2005 - 15 -

The Scenes of the TThe Scenes of the T--DMB TestDMB Test

KRnet 2005 - 16 -

What is available for TWhat is available for T--DMB? (1/5)DMB? (1/5)

TT--DMB DMB transmission systemtransmission system DAB Transmitter

DAB Audio Encoder

EnsembleRemultiplexer

EnsembleMultiplexer

EnReMUXManager

T-DMBMedia Processor

T-DMBPCI Receiver/SW Player

KRnet 2005 - 17 -

What is available for TWhat is available for T--DMB? (2/5)DMB? (2/5)

Ensemble ReMultiplexer

Media processor (S/W)

Stream server

Media processor (S/W)

TT--DMB transmission systemDMB transmission system

KRnet 2005 - 18 -

What is available for TWhat is available for T--DMB? (3/5)DMB? (3/5)

Media processor (H/W) Media processor (H/W)

DMB analyzer system

TT--DMB transmission systemDMB transmission system

KRnet 2005 - 19 -

What is available for TWhat is available for T--DMB? (4/5)DMB? (4/5)

TT--DMB terminalsDMB terminals

PC based software player

Mobile phonesTerminals for moving vehicles

KRnet 2005 - 20 -

TT--DMBDMBcoveragecoverage

What is available for TWhat is available for T--DMB? (5/5)DMB? (5/5)

70 km

KRnet 2005 - 21 -

Interactive data services on TInteractive data services on T--DMBDMBIIII

KRnet 2005 - 22 -

What is the next steps of TWhat is the next steps of T--DMB beyond AV services?DMB beyond AV services?

Expansion from traditional broadcasting Simple AV media to rich media data services

Linear contents to interactive contents

Uni-directional to bi-directional services

T-DMB Channel(Broadcasting Contents)

Fixed

Portable

Broadcasting Station

Wireless network(User’s request &Individual data)

Fixed

KRnet 2005 - 23 -

Interactive richmedia services on TInteractive richmedia services on T--DMBDMB

AV independent data services

MOT: Multimedia Object Transfer

– TDC : Transparent Data Channel

– IP Tunneling

Services

– BWS (Broadcast web sites), SlideShow

– EPG: XML and Voice EPG

AV synchronized data services Based on MPEG-4 Systems technology

Provision of variety of multimedia objects

– Video, Audio, Image, Text, Graphics

The behavior of objects can be determined

by an user interaction and/or time event.

– Local/remote interactivity

KRnet 2005 - 24 -

Car and personal navigation services Live road traffic/public transport information

Massive traveler/location based services Parking/weather/restaurant/tourist spot information

Environment information alert

Bi-directional location based services Hotel/tourist ticket reservation service

Travel information on demand

AV independent Interactive data services (1/2)AV independent Interactive data services (1/2)

TT--DMB TTI service DMB TTI service

TTI: Traffic and Traveler InformationTTI: Traffic and Traveler Information

KRnet 2005 - 25 -

AV independent Interactive data services (2/2)AV independent Interactive data services (2/2)

TT--DMB TTI service platformDMB TTI service platform

TTI

Mobile Receiver

TTI Server

DMB Transmitter

DMB Broadcasting System

TPEG Based TTI Authoring Server

KRnet 2005 - 26 -

AV synchronized interactive data service (1/2)AV synchronized interactive data service (1/2)

MPEG-4 Systems technology The first international richmedia standard

Video, Audio, Image, Text and Graphics

Provision of additional information related and/or unrelated AV program Information on actors, background music

Weather forecast, Price of stock, News summary

Synchronization of interactive data to main AV

The behavior of objects can be determined by an user interaction and/or time event. Local interactivity

Remote (Bi-directional) Interactivity

– Additional data can be accessible through a back channel.

Multilingual audio & caption services Provision of multilingual services depending on a user

Selection of language by a user

KRnet 2005 - 27 -

AV synchronized interactive data service (2/2)AV synchronized interactive data service (2/2)

• Video+Auido+Images+Streaming text

• Showing/hiding various additional data by user interaction

• Providing program related additional data synchronized with main AV

• Linking to website

- To obtain detailed information on products

- To Purchasing products

Interactive news serviceInteractive news service Interactive advertisementInteractive advertisement

KRnet 2005 - 28 -

Interactive contents authoring system (1/2)Interactive contents authoring system (1/2)

Authoring system GUI

KRnet 2005 - 29 -

Interactive contents authoring system (2/2)Interactive contents authoring system (2/2)

System overview & features Authoring of bidirectional interactive contents synchronized with

main AV

Conforming with the Terrestrial DMB

Provision of an intuitive graphical user interface

Support of MPEG-4 XMT and MP4 file formats

Applications Bidirectional interactive multimedia service on T-DMB

Interactive E (Electronic) and T (Television)-Commerce

Interactive video-on-demand services

KRnet 2005 - 30 -

ConclusionsConclusionsIIIIII

KRnet 2005 - 31 -

ConclusionsConclusions

T-DMB, new paradigm for the digital multimedia broadcasting

◆ Mobile reception with various data (audio/video/data) services

◆ Bidirectional interactive broadcasting services through telecommunication network

◆ Provision of a convenient interactive media consumption environment

◆ Next generation broadcasting framework for anytime, anywhere and anydevices

◆ Towards the personalized broadcasting

Foundation for ubiquitous information services

◆ Provision of various interactive services by harmonizing broadcasting and communications