International Telecommunication Union ITU-T Workshop on Home Networking and Home Services Tokyo, Japan, 17-18 June 2004 Home Server/Network Systems toward.

International Telecommunication Union

ITU-T Workshop on Home Networking and Home Services Tokyo, Japan, 17-18 June 2004

Home Server/Network Home Server/Network Systems towSystems towaard rd

Digital BroadcastingDigital BroadcastingKeiichi MurakamiFUJITSU Laboratories

TA8/TC100/IEC

2dates

ITU-T

TC100 : Audio, video and multimedia equipment and systems

Chairman SecretariatAGS

AGM

TAGMT

Project

Technical Area :corresponds to SC

General MaintenanceTeam

Advisory Group onStrategy

Advisory Group onMngmnt

TC100 (Established in 1995)

3dates

ITU-TTA1: Terminals for audio, video and data

servicesTA2: Colour measurement and managementTA4: Digital system interfaces and protocols TA5: Cable networks for television signals,

sound signals and interactive servicesTA6: Higher data rate storage media, data

structures and equipment TA7: Moderate data rate storage media,

equipment and systems TA8: Multimedia home server systems

Title of each TA

4dates

ITU-T

TA8: Multimedia home server systems

o Established in May, 2002o Background:

1. Growing Terrestrial Digital TV Broadcast

2. Growing PVR (Private Video Recorder)3. Homeserver-based Broadcast Service

Introduction

o Activities up to now:1. U Conceptual Model of Homeserver2. DF-based removable recording format3. API for removable media4. DRM (Newly started)

5dates

ITU-T

Homeserver-based Broadcast Services

o Store contents in a large capacity storageo Access control at the time accessing the

stored contents, including DRMo Sophisticated services using Meta Data,

EPG, and/or uplink access channel

Cable/DSL/FTTH

Digital TV

Broadcast Server

ISP Server

Home Server

6dates

ITU-T

TA8’s Homeserver Conceptual Model

Head End

In-house Network IF

Interchangeable StorageMedia Port

User IF

Functional Modules

CNTRL

CNTRL

CNTRL

CNTRL

High CapacityStorageCNTRL

ContentsCNTRL

API

7dates

ITU-T

Digital TV Services in US

o Satellite: ’94- DirecTV, USSB o Terrestrial: ’98- top four & PBSo ATSC (Terrestrial)

1. 18 video format including SD & HD

2. DASE: multimedia broadcasting using XHTML, CSS, Java

o Anti-piracy mechanism (FCC, ’05-)1. Broadcast flag, no encryption 2. Private copy will not be restricted

8dates

ITU-T

Digital TV Services in Europe

o Satellite: ’96- Germany, France, ’98- GBR

o Terrestrial: ’98- GBR, ’99- Sweden,…o DVB-S (Satellite), DVB-T (Terrestrial)

1. Video format is not providedMainly SDTV is available today.

2. EPG, Service information (DVB-SI)3. Conditional access (DVB-CI)4. Multimedia middleware (DVB-MHP)

9dates

ITU-T

Digital TV Services in JAPAN

o 1996- Satellite2003- Terrestrial

o ISDB-S (Satellite), ISDB-T (Terrestrial)1. HDTV or SDTV multi program2. BML Data Broadcasting3. Bidirectional services via the internet

o Contents protection by B-CAS (’04-)1. Encrypt contents2. Restrict copy up to once

10dates

ITU-T

Stop ofAnalog TV

AthensOlympic

World CupIn Germany

World CupBeijingOlympic

Roadmap for Diffusion of Terrestrial DTV set in JAPAN

’04 ’05 ’06 ’07 ’08 ’09 ’10 ’11

%100

80

60

40

20

10,000,000households

24,000,000households

48,000,000households

Percentage of households owning DTV set

11dates

ITU-T

Issues to be Solved for DTV- Reasonable Copy Protection -

o Heavy restrictions in Japan1. No duplication: only “move” allowed2. Contents on a removable media

playable only on authorized playerso Light weight restrictions in U.S.

1. Broadcast flag permits fair use copy

12dates

ITU-T

Example of Copy Protection Regulation

for PC in Japan

TunerDecrypt

Broadcasted Data

Local Encryption

PCI Bus

Storage

Local Decryption

Video Card

No Raw Data on the PCI Bus(User Accessible Bus)

Display

13dates

ITU-T

MPEG-2/4 IPMP : Outline

o International Standard for Intellectual Property Management & Protection for MPEG Audio Visual contents

o Basic concept is an architecture for secure coordination framework for IPMP tools.

1. Various CA/DRM tools (Authentication, Encryption/Decryption, Watermarking, etc.) can be applied

2. Tools are managed via IPMP Control Graph and handled as Blackbox.

14dates

ITU-T

MPEG-2/4 IPMP : Status

o Not widely used in current mass marketo Markets in which MPEG-2/4 AV contents

are widely used already have its own simple CA/DRM related mechanism.

1. DVD2. Digital Broadcast3. AV clip for 3G mobile phone

o Reasonable DRM implementation example required to enlarge market size and to reduce equipment cost TC100 activities

15dates

ITU-T

Home Network: History

o Access network:1. External PSTN modem2. Internal PSTN modem3. External ADSL modem/FTTH converter4. Internal ADSL modem ?

How about FTTH converter ?5. Cable modem: stay independently

o In-house network:1. No practical network at home until

recently: -1394: replacement of RCA pin jack

2. Very few WLAN audio streaming3. Very few modem/printer/storage sharing

o The situation is changing

16dates

ITU-T

Emergence of Network Media Player- First Practical Homenetwork Device -

WLAN / Ethernet

Analog A/V Cable

Network Media PlayerWith MPEG Decoder

Access Network

17dates

ITU-T

o TR 62291: API for UDF based file systems

o TS 62318: Home server conceptual model

o P62328: Interchangeable volume/file

structure adaptation for

broadcasting receiver

o PT61925: The vocabulary of home server

TA8 activities (1)

18dates

ITU-T

TA8 activities (2) Interchangeable volume/file

structure adaptation for broadcasting receivers

This standard defines the volume and file structure required for interchanging multimedia data of a home server/broadcasting receiver, which consists of an AV stream with multiple associated objects.

Part 1: General description and architecturePart 2: General recording structurePart 3: Broadcasting system specific

recording structure - ISDB

Specifications for other country/region are expected to be proposed.

19dates

ITU-T

TA8 activities (3)Interchangeable volume/file

structure adaptation for broadcasting receivers

(continued)

Root TVR_ROOT

RT_TVRS TVPR010

PROG_SETMGR

EXT_PS.MGR

PROG0001.PIF

PROG0002.PIF

TVPR020

PROG0001.PIF

PROG0002.PIF

directory

file (including stream files)

other structure

root directory for TV recording format

program set management file

extended program set management file

TV recording format specific directory

20dates

ITU-TTC100 Liaison

o AES (Audio Engineering Society)o ITU-R/SG6M, 6Qo ITU-T/SG9, 12, 16o JTC1/SC29 (Multimedia Coding)o SMPTE (Society of Motion Picture

and Television Engineers)o 1394TAo ISO/TC42 (Photography)

21dates

ITU-T

Closing Remarks

o Home server/network-related TC100 activities were introduced.

o PC is now leading the home network withnetwork media player.

o Broadcasting services based on home server will drive gateway function between in-house network and access network.

o DRM is the key issue for A/V network deployment.