Home ServerNetwork Systems toward Digital Broadcasting

Home Server/Network Systems toward Digital Broadcasting

Keiichi Murakami FUJITSU Laboratories TA8/TC100/IEC

TC100 : Audio, video and multimedia equipment and systems

TC100

AGS

Advisory Group on Strategy

Advisory Group on Mngmnt

AGM

GMT

TA

Project

General Maintenance Team

Technical Area : corresponds to SC

(Established in 1995)

Chairman Secretariat

2

dates

Title of each TA

TA1: Terminals for audio, video and data services TA2: Colour measurement and management TA4: Digital system interfaces and protocols TA5: Cable networks for television signals, sound signals and interactive services TA6: Higher data rate storage media, data structures and equipment TA7: Moderate data rate storage media, equipment and systems TA8: Multimedia home server systems

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dates

TA8: Multimedia home server systems

Established in May, 2002 Background: Growing Terrestrial Digital TV Broadcast Growing PVR (Private Video Recorder) Homeserver-based Broadcast Service Introduction Activities up to now: U Conceptual Model of Homeserver DF-based removable recording format API for removable media DRM (Newly started)

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dates

Homeserver-based Broadcast Services

Store contents in a large capacity storage Access control at the time accessing the stored contents, including DRM Sophisticated services using Meta Data, EPG, and/or uplink access channel

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TA8’s Homeserver Conceptual Model

API

Head End

CNTRL

In-house Network IF

CNTRL

Interchangeable Storage Media Port

CNTRL

User IF

CNTRL

Functional Modules

High Capacity Storage CNTRL

Contents CNTRL

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dates

Digital TV Services in US

Satellite: ’94- DirecTV, USSB Terrestrial: ’98- top four & PBS ATSC (Terrestrial) 18 video format including SD & HD DASE: multimedia broadcasting using XHTML, CSS, Java Anti-piracy mechanism (FCC, ’05-) Broadcast flag, no encryption Private copy will not be restricted

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dates

Digital TV Services in Europe

Satellite: ’96- Germany, France, ’98- GBR Terrestrial: ’98- GBR, ’99- Sweden,… DVB-S (Satellite), DVB-T (Terrestrial) Video format is not provided Mainly SDTV is available today. EPG, Service information (DVB-SI) Conditional access (DVB-CI) Multimedia middleware (DVB-MHP)

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dates

Digital TV Services in JAPAN

1996- Satellite 2003- Terrestrial ISDB-S (Satellite), ISDB-T (Terrestrial) HDTV or SDTV multi program BML Data Broadcasting Bidirectional services via the internet Contents protection by B-CAS (’04-) Encrypt contents Restrict copy up to once

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dates

Roadmap for Diffusion of Terrestrial DTV set in JAPAN

%

Percentage of households owning DTV set

100

80

60

40

20

’04 ’05 ’06 ’07 ’08 ’09 ’10 ’11

48,000,000 households

24,000,000 households

10,000,000 households

Athens Olympic

World Cup In Germany

Beijing Olympic

World Cup

Stop of Analog TV

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dates

Issues to be Solved for DTV - Reasonable Copy Protection -

Heavy restrictions in Japan No duplication: only “move” allowed Contents on a removable media playable only on authorized players Light weight restrictions in U.S. Broadcast flag permits fair use copy

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Example of Copy Protection Regulation for PC in Japan

Decrypt Broadcasted Data

Video Card

Tuner

Display

Local Encryption

Local Decryption

PCI Bus

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

Storage

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dates

MPEG-2/4 IPMP : Outline

International Standard for Intellectual Property Management & Protection for MPEG Audio Visual contents Basic concept is an architecture for secure coordination framework for IPMP tools. Various CA/DRM tools (Authentication, Encryption/Decryption, Watermarking, etc.) can be applied Tools are managed via IPMP Control Graph and handled as Blackbox.

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MPEG-2/4 IPMP : Status

Not widely used in current mass market Markets in which MPEG-2/4 AV contents are widely used already have its own simple CA/DRM related mechanism. DVD Digital Broadcast AV clip for 3G mobile phone Reasonable DRM implementation example required to enlarge market size and to reduce equipment cost TC100 activities

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Home Network: History

Access network: External PSTN modem Internal PSTN modem External ADSL modem/FTTH converter Internal ADSL modem ? How about FTTH converter ? Cable modem: stay independently In-house network: No practical network at home until recently: -1394: replacement of RCA pin jack Very few WLAN audio streaming Very few modem/printer/storage sharing The situation is changing

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Emergence of Network Media Player - First Practical Homenetwork Device

Analog A/V Cable

Access Network

WLAN / Ethernet

Network Media Player With MPEG Decoder

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TA8 activities (1)

TR 62291: API for UDF based file systems TS 62318: Home server conceptual model P62328: Interchangeable volume/file structure adaptation for broadcasting receiver PT61925: The vocabulary of home server

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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 architecture Part 2: General recording structure Part 3: Broadcasting system specific recording structure - ISDB

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

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TA8 activities (3) Interchangeable volume/file structure adaptation

for broadcasting receivers (continued)

program set management file

Root

TVR_ROOT

PROG_SETMGR

extended program set management file

EXT_PS.MGR

RT_TVRS

TVPR010

root directory for TV recording format

PROG0001.PIF

TV recording format specific directory

PROG0002.PIF

TVPR020

directory

PROG0001.PIF

other structure

PROG0002.PIF

file (including stream files)

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dates

TC100 Liaison

AES (Audio Engineering Society) ITU-R/SG6M, 6Q ITU-T/SG9, 12, 16 JTC1/SC29 (Multimedia Coding) SMPTE (Society of Motion Picture and Television Engineers) 1394TA ISO/TC42 (Photography)

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Closing Remarks

Home server/network-related TC100 activities were introduced. PC is now leading the home network with network media player. Broadcasting services based on home server will drive gateway function between in-house network and access network. DRM is the key issue for A/V network deployment.

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