맞춤형 방송 서비스 기술

전자부품연구원 디지털미디어연구센터

이석필

맞춤형 방송 서비스 기술

전자부품연구원 디지털미디어연구센터

이석필

ICAT 2005ICAT 2005

목차목차

1. 맞춤형 방송 서비스 ?

2. 맞춤형 방송관련 표준 동향

3. 맞춤형 방송 서비스 예

4. 국내외 관련 기술 동향

What’s Metadata ?What’s Metadata ?

맞춤형 방송 서비스 맞춤형 방송 서비스

Simpler ways for the consumer to acquireTV content on local storage– click on EPG, trailer, website

• groups > programmes > segments

– series, related material– news items, parts of programmes

• Personalisation and automatic recording

“Watch what you want, when you want”

Metadata? Metadata?

Content is King, Metadata is Queen!!!

Data about ContentsContents Description Information

MPEG-7, TV Anytime Forum, CableLabs

Content Description Metadata Description Audio/Video Information Program Information Group Information Media Review DS

Instance Description Metadata Program Location Service Information

Segmentation Metadata Segment Information Segment Group Information

Consumer Metadata User Preference Usage History

MetadataMetadata

Create

Metadata

aggregation Metadata

editing Content creation

Publish

Content

publishing

Metadata publishing

Se

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se

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n

me

tad

ata

L

oca

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reso

lutio

n

me

tad

ata

Se

gm

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Select & Present

Search & Selection

Location Resolution Storage

Metadata Content User

Interaction

Metadata ProcessMetadata Process

Choose product from catalogue

Get product

Take piece of paper to someone else

Pay, and get a piece of paper

Location resolution

metadata

acquire

search

select

(from the TV Anytime Forum material)

Selection Mechanism using MetadataSelection Mechanism using Metadata

맞춤형 방송 관련 표준 현황맞춤형 방송 관련 표준 현황

TVA MetadataTVA Metadata

• Assists the consumer in selecting content• Supports creation and use of user profiles

• TVA metadata includes– Program information, Segmentation information– Related material information– Purchase information– User profiles, Usage history

• TVA metadata uses a CRID to refer to content

Why standardised metadata?Why standardised metadata?

• Standardised metadata allows – authoring once for many destinations– metadata authoring tools that can be supplied to

many different customers– editing of metadata that has come from many

sources– economy of scale for broadcasters &

manufacturers

Content ReferencingContent Referencing

• The CRID (Content Reference Identifier) allows for location independent referencing of content

• It is assigned by an authority which also has the ability to resolve the CRID to a location

• A CRID points to a single piece of content or a series of other CRIDs

Why do we need Content Referencing?Why do we need Content Referencing?

• The same metadata can be used for content regardless of where and when it is broadcast

• To reference groups of programmes such as an entire series

• References can be given before time & channel has been decided

• References work even if there is a change to the scheduled transmission time

CRID – definitionCRID – definition

Format of authority:

CRID:// <authority> / <data>

DNS name

<GroupInformation GroupId="crid://hbc.com/foxes/all" GroupType="show" Ordered="true" NumberOfItems="2"> <BasicDescription> <Title type="main">All episodes of Foxes ever</Title> <Synopsis Length="short">More Foxes than you can handle</Synopsis> </BasicDescription><MemberOf>crid://hbc.com/comedy/all</MemberOf></GroupInformation>

<ProgramInformation ProgramId="crid://hbc.com/foxes/episode1"> <BasicDescription> <Title type="main"> The one where Fox jumps in the Potomac </Title> <Synopsis Length="short"> Fox goes to Washington and jumps in the Potomac </Synopsis> </BasicDescription><MemberOf>crid://hbc.com/foxes/all</MemberOf></ProgramInformation>

<ProgramInformation ProgramId="crid://hbc.com/foxes/episode2"> <BasicDescription> <Title type="main"> The one where Fox drowns in the Lake of Geneva </Title> <Synopsis Length="short"> Fox goes to Geneva and tries to climb the fountain </Synopsis> </BasicDescription><MemberOf>crid://hbc.com/foxes/all</MemberOf></ProgramInformation>

CRIDCRID

CRID

Group information Program information

CRID – Grouping example

CRID – ResolutionCRID – Resolution

CRIDTOP

locator

CRIDA CRIDB CRIDC

CRIDB1 CRIDB2

locator locator locator

locator

A CRID can resolve to other CRIDs

At some point, CRIDs must resolve to locations

CRIDs resolve to lists (of CRIDs or locators)

TV Anytime typical flow of dataTV Anytime typical flow of data

Publish Select Acquire Search View Finish Locate

• Content providers will publish information (metadata) about their content, which can be used in a search and select process

• Selected content can be located and acquired for viewing

• A finishing phase is foreseen e.g. to deal with PPV scenarios

DVB S/C/T etc + Anything supporting IP

DVB-TS and/or DVB-IP Protocols

MHP (Interactivity)Mobility, Storage, Networking

Audio/VideoService

Descriptors

Content ProtectionMetadata

Storage

DVB 2.0 Tool BoxDVB 2.0 Tool Box

맞춤형 방송 서비스 예맞춤형 방송 서비스 예

Example ApplicationsExample Applications

• Recording from a trailer

• My Electronic Program Guide

• Searching for interesting programs

• Segmentation

• Personalized Service

• Targeting Service

Digital BroadcastingDigital Broadcasting

- Specification: ATSC 및 DVB - Focus on A/V

– HD(High Definition) TV- 16:9– SD(Standard Definition) TV- 4:3

Digital Broadcasting

(A/V)

- Spec.: ATSC-ACAP, DVB-MHP, OpenCable-OCAP - Dec. 2000: Adopting Data Broadcasting Spec. in Korea - May. 2002: Test Data Broadcasting complied with DASE in

Korea

Digital Audio/Video

Data Broadcasting

Digital Data BroadcastingDigital Data Broadcasting

Anytime Service: Users can Watch what you want, when you want Personal TV

– User Profile Control

– Metadata

– RMP/IPMP

Content Creator

Broadcaster

Network Provider

ISP

Personalized ServicePersonalized Service

Set Top BoxCSP

(Content Service

Provider)

MetadataGenerator

Interactive Metadata Description

Metadata 생성

MetadataDB

LocationResolution

Server

CSP(Content Service

Provider)

MetadataGenerator

- Content Description Metadata- Instance Description Metadata- Segmentation Metadata

Interactive Metadata Description

Metadata editing C

onte

nt S

earc

h/Nav

igat

ion

CRID

s

CRID

Locators

DB Search Metadatapublish

CRID Selection

Locator Selection

Search/Navigation

Server

Locator

Content

Operation Flow for Personalized ServiceOperation Flow for Personalized Service

Recording from a trailerRecording from a trailer

Recording from a Web pageRecording from a Web page

My EPGMy EPG

Using TV Anytime data, you can create an EPG with data from many sources.

Detailed program informationDetailed program information

Searching for interesting programsSearching for interesting programs

Using TV Anytime data, a consumer can search for interesting content without knowing where or when it will be broadcast

Segmentation(1)Segmentation(1)

Segmentation(2)Segmentation(2)

Value Chain of Targeting ServiceValue Chain of Targeting Service

콘텐츠 제공자 및 ISP

- 타게팅 서비스를 통한 주문 형 서비스 제공

- 시청자들과의 다양한 링크로 인한 다양한 콘텐츠 제공

- 원하는 방송프로그램 및 콘텐츠 의 맞춤형 서비스 제공 받음

- 다양한 포맷의 콘텐츠의 TV 를 통한 시청

시청자

방송사업자

- 전 방송프로그램시간의Prime Time 화 => 광고수익극대화

- 타케팅서비스를 통한 개인 맞 춤형 광고서비스 제공

콘텐츠 제공

제작비 및 수익금 분배

방송프로그램 제공

가입비 및 시청료

광고 주광고료

서비스이용료

타케팅서비스

가전사 /부품사

- 고마진 디지털 기기판매- 신규 핵심 부품 판매

광고료

구매

국내외 개발동향국내외 개발동향

Key FeaturesSupports DVR functions for

both SD & HD content HD ¼ Screen VideoDual HD Decode120 GB Hard DriveDVI 1.0 output with HDCP

(DVI-D) connector standardOptions

IEEE 1394/5C160 GB Hard Drive

An Example of US PVRAn Example of US PVR

Status Bar Tivo’s Suggestion

Tivo-OSD(1)Tivo-OSD(1)

Recording by Title Manual Recording

Tivo-OSD(2)Tivo-OSD(2)

Networked PVR

Home Theatre

Multi-Room DVR

PlusHome Theatre ● Games ● MP3 Music ● Digital Photos ● Camcorders ● More

New Games

MP3s

PhotosCamcorders

PVRs in HomePVRs in Home

DVR today 80GB 3.5” IDE storage for SD and analog encoded content Typical analog encode rate 5.55 Mbps (2.5 GB/hr) Typical SD broadcast rate 3.5 Mbps (1.58 GB/hr) Ability to concurrently stream four sources

Introduction of HD-DVR Regular HD at 19.5 Mbps (8.58 GB/hr) HBO HD at 15 Mbps (6.75 GB/hr)

Introduction of Multi-Room Solutions Enable access to HDD content by other boxes in the home Drives multiple concurrent streams up to 7 Multi-Room HD becomes near-term holy grail target

7 x 19.5Mbps = 136.5Mbps (~ 17MB/s)

In-Home TrendsIn-Home Trends

일본의 관련 서비스 계획일본의 관련 서비스 계획

Personal Video Receiver

User metadata ＨＤＤ Segmented Ad

CommercialVideo insertion

TV Set

TV program and ads with User Description metadata.

（Wine ad, Beer ad)

On Air

(Digital Terrestrial Broadcasting)

Beer commercial isinserted into the ad break.

User preferences metadata.Ex.

Father’s favorite drink is Beer

Mother’s favorite drink is Wine

The present vieweris “Father”

Automatic Ad. Insertion using MetadataAutomatic Ad. Insertion using Metadata

Web site

ClientClient

User profile DBUser profile DB

Service EngineService Engine

Recommendation

My Page

Product Association

Collaborative Filtering

Analysis Engine

Clustering

Personalization EnginePersonalization Engine

Contents DBContents DB

Voting Info. DBVoting Info. DB

Personalized Engine: Server SidePersonalized Engine: Server Side

Content Provider

• Recommend, record, and delete desirable TV program based on viewer’s preference Information

• User preference modeling into preference information based on a viewer’s taste

• Content Provider usingBroadcast, cable, internet.

User Behavior Collector

User ProfileUser Profile

Usage HistoryUsage History

PSIP

C.P. 1

C.P. 2

C.P. 3

C.P. n

TV Program info.TV Program info.

VOD/AODDownload Robot

DTV

DataCollecting Robot

Program Scheduler

ProgramRecommender

Virtual Channel

Channel Skipper

Service Engine

Profile Analyzer

Program Preference Predictor

Keyword-basedAnalyzer

User Preference Engine

Intelligent Storage Manager

Automatic Recorder

Personalized Engine: Client SidePersonalized Engine: Client Side

Metadata GeneratorMetadata Generator

양방향 맞춤형 단말시스템양방향 맞춤형 단말시스템

Segmentation BrowserSegmentation Browser

검색 결과 표시검색 결과 표시

개인별 저장화면개인별 저장화면

케이블

위성

공중파

인터넷

휴대형 PNGTV @ Anywhere

휴대형 PNGTV @ Anytime

Multi-FormatA/V Data

HandheldMobile

PDA

휴대형미디어

플레이어

PC

휴대형PNGTV

거치형 PNGTV @ Home

컨텐츠 복제 방지

Anytime/Anywhere/Any-format

Next Generation Personal TVNext Generation Personal TV

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감사합니다 !감사합니다 !