Presentation on theme: "International Telecommunication Union ITU-T Workshop on Home Networking and Home Services Tokyo, Japan, 17-18 June 2004 Home Server/Network Systems toward."— Presentation transcript:
International Telecommunication Union ITU-T Workshop on Home Networking and Home Services Tokyo, Japan, 17-18 June 2004 Home Server/Network Systems toward Digital Broadcasting Keiichi Murakami FUJITSU Laboratories TA8/TC100/IEC
ITU-T 2 dates TC100 : Audio, video and multimedia equipment and systems Chairman Secretariat AGS AGM TA GMT Project Technical Area : corresponds to SC General Maintenance Team Advisory Group on Strategy Advisory Group on Mngmnt TC100 (Established in 1995)
ITU-T 3 dates 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 Title of each TA
ITU-T 4 dates TA8: Multimedia home server systems o Established in May, 2002 o 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 Homeserver 2.DF-based removable recording format 3. API for removable media 4.DRM (Newly started)
ITU-T 5 dates Homeserver-based Broadcast Services o Store contents in a large capacity storage o Access control at the time accessing the stored contents, including DRM o Sophisticated services using Meta Data, EPG, and/or uplink access channel Cable/DSL/FTTH Digital TV Broadcast Server ISP Server Home Server
ITU-T 6 dates TA8s Homeserver Conceptual Model Head End In-house Network IF Interchangeable Storage Media Port User IF Functional Modules CNTRL High Capacity Storage CNTRL Contents CNTRL AP I
ITU-T 7 dates Digital TV Services in US o Satellite: 94- DirecTV, USSB o Terrestrial: 98- top four & PBS o 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
ITU-T 8 dates 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 provided Mainly SDTV is available today. 2. EPG, Service information (DVB-SI) 3. Conditional access (DVB-CI) 4. Multimedia middleware (DVB-MHP)
ITU-T 9 dates Digital TV Services in JAPAN o 1996- Satellite 2003- Terrestrial o ISDB-S (Satellite), ISDB-T (Terrestrial) 1. HDTV or SDTV multi program 2. BML Data Broadcasting 3. Bidirectional services via the internet o Contents protection by B-CAS (04-) 1. Encrypt contents 2. Restrict copy up to once
ITU-T 10 dates Stop of Analog TV Athens Olympic World Cup In Germany World Cup Beijing Olympic Roadmap for Diffusion of Terrestrial DTV set in JAPAN 04 05 06 07 08 09 10 11 % 100 80 60 40 20 10,000,000 households 24,000,000 households 48,000,000 households Percentage of households owning DTV set
ITU-T 11 dates Issues to be Solved for DTV - Reasonable Copy Protection - o Heavy restrictions in Japan 1.No duplication: only move allowed 2.Contents on a removable media playable only on authorized players o Light weight restrictions in U.S. 1.Broadcast flag permits fair use copy
ITU-T 12 dates Example of Copy Protection Regulation for PC in Japan Tuner Decrypt Broadcaste d Data Local Encryption PCI Bus Storage Local Decryption Video Card No Raw Data on the PCI Bus (User Accessible Bus) Display
ITU-T 13 dates 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.
ITU-T 14 dates MPEG-2/4 IPMP : Status o Not widely used in current mass market o Markets in which MPEG-2/4 AV contents are widely used already have its own simple CA/DRM related mechanism. 1. DVD 2. Digital Broadcast 3. AV clip for 3G mobile phone o Reasonable DRM implementation example required to enlarge market size and to reduce equipment cost TC100 activities
ITU-T 15 dates Home Network: History o Access network: 1.External PSTN modem 2.Internal PSTN modem 3.External ADSL modem/FTTH converter 4.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 streaming 3.Very few modem/printer/storage sharing o The situation is changing
ITU-T 16 dates Emergence of Network Media Player - First Practical Homenetwork Device - WLAN / Ethernet Analog A/V Cable Network Media Player With MPEG Decoder Access Network
ITU-T 17 dates 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)
ITU-T 18 dates 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.
ITU-T 19 dates TA8 activities (3) Interchangeable volume/file structure adaptation for broadcasting receivers (continued) RootTVR_ROOT RT_TVRSTVPR010 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
ITU-T 20 dates TC100 Liaison o AES (Audio Engineering Society) o ITU-R/SG6M, 6Q o ITU-T/SG9, 12, 16 o JTC1/SC29 (Multimedia Coding) o SMPTE (Society of Motion Picture and Television Engineers) o 1394TA o ISO/TC42 (Photography)
ITU-T 21 dates Closing Remarks o Home server/network-related TC100 activities were introduced. o PC is now leading the home network with network 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.