Home Server/Network Systems toward Digital Broadcasting

1
Home Server/Network Systems toward Digital
Broadcasting

• Keiichi Murakami
• FUJITSU Laboratories
• TA8/TC100/IEC

2
TC100 Audio, video and multimedia
equipment and systems
(Established in 1995)
TC100
Chairman Secretariat
AGS
Advisory Group on Strategy
Advisory Group on Mngmnt
AGM
GMT
TA
Project
General Maintenance Team
Technical Area corresponds to SC
3
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
4
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)

5
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

6
TA8s 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
7
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

8
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)

9
Digital TV Services in JAPAN

• 1996- Satellite2003- 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

10
Roadmap for Diffusion of Terrestrial DTV set in
JAPAN

Percentage of households owning DTV set
100





48,000,000 households
80
24,000,000 households
60
40
10,000,000 households
20
04 05 06 07 08 09 10
11
Stop of Analog TV
Athens Olympic
World Cup In Germany
World Cup
Beijing Olympic
11
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

12
Example of Copy Protection Regulationfor 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
13
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.

14
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

15
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

16
Emergence of Network Media Player- First
Practical Homenetwork Device -
Analog A/V Cable
Access Network
WLAN / Ethernet
Network Media Player With MPEG Decoder
17
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

18
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.
19
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)
20
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)

21
Closing Remarks

• Home server/network-related TC100 activities were
  introduced.
• PC is now leading the home network withnetwork
  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.