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DRAFT AUSTRALIAN STANDARD - DIGITAL TELEVISION PART 1

DRAFT AUSTRALIAN STANDARD - DIGITAL TELEVISION PART 1. SCOPE & GENERAL. References still being revised ETSI, AS/NZ, DVB, ITU and IEC/ISO standards Cross referencing links Intention for final Publication on CD-ROM together with reference standards and links Updated to latest approved texts.

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DRAFT AUSTRALIAN STANDARD - DIGITAL TELEVISION PART 1

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  1. DRAFT AUSTRALIAN STANDARD - DIGITAL TELEVISION PART 1

  2. SCOPE & GENERAL • References still being revised • ETSI, AS/NZ, DVB, ITU and IEC/ISO standards • Cross referencing links • Intention for final Publication on CD-ROM together with reference standards and links • Updated to latest approved texts

  3. CHANNEL CODING and MODULATION • EN 300744 - Framing Structure,Channel Coding and Modulation • Emphasis on 7 MHz channel bandwidth • Improved descriptive text- but no change to the actual standard • Spectrum mask for 7 MHz transmission

  4. CHANNEL CODING and MODULATION • EN 300744 - Framing Structure,Channel Coding and Modulation • Spectrum mask for co-located adjacent channel analogue • Spectrum mask for co-located adjacent channel digital

  5. CHANNEL CODING and MODULATION • TS 101 191 DVB mega-frame for Single Frequency Network Synchronization • Modified to note the different time duration for the different bandwidth systems • Clause and standards references • Addition of 6 MHz values

  6. MULTIPLEX & TRANSPORT STREAM • ETR 154 - Implementation Guidelines for the use MPEG-2 Systems • Removal of constraint of no two elementary streams having the same stream_id • Added requirement to always transmit the profile_stream_descriptor field if not MP@ML

  7. MULTIPLEX & TRANSPORT STREAM • ETR 154 - Implementation Guidelines for the use MPEG-2 Systems • removal of reference to hierarchy_descriptor for video • Additional requirement to use the target_background_descriptor whenresolution exceeds the MP@ML bounds

  8. MULTIPLEX & TRANSPORT STREAM • ETR 154 - Implementation Guidelines for the use MPEG-2 Systems • Addition of Storage Media Interoperability limits to suit digital HD VCR data rates and handle DVB-T Transport Stream. • Deletion of reference to 30 Hz IRDs • Luminance resolution -correction of error only

  9. MULTIPLEX & TRANSPORT STREAM • ETR 154 - Implementation Guidelines for the use MPEG-2 Systems • Changes necessary to address inclusion of AC3

  10. MULTIPLEX & TRANSPORT STREAM • EN 300 468 - Specification for Service Information • Inclusion of reference and abbreviations for AC3 • Revision of Figure 1 to illustrate Australian Networks

  11. MULTIPLEX & TRANSPORT STREAM • EN 300 468 - Specification for Service Information • Revision to the description of the Network Information Table to reflect proposed DVB updates • Bouquet Association table yet to be finalized

  12. MULTIPLEX & TRANSPORT STREAM • EN 300 468 - Specification for Service Information • Logical channel descriptor is an Australian adaptation of an addition introduced in UK for the BAT • Service description Table modified to reflect DVB proposed updates

  13. MULTIPLEX & TRANSPORT STREAM • EN 300 468 - Specification for Service Information • Component descriptor tables to be modified to handle AC3 • Content descriptor tables may be modified to provide Australian appropriate descriptors

  14. MULTIPLEX & TRANSPORT STREAM • EN 300 468 - Specification for Service Information • Terrestrial delivery system descriptor modification to add values for 6 MHz • Parental rating descriptor tables may need adaptation to Australian ratings

  15. MULTIPLEX & TRANSPORT STREAM • ETR 211 Implementation and usage of Service Information • Will need further work to align with the changes to EN.300 468 • ETR 162 Allocation of Service Information codes • Yet to be addressed

  16. ELEMENTARY STREAM VIDEO • AS/NZ 13818-2 • Note that this may have to refer to ISO/IEC 13818

  17. ELEMENTARY STREAM AUDIO • Addition of AC3 audio with revisions to ATSC A/52 constraints • Total bit-rate • Audio sampling rate

  18. DATA BROADCASTING • EN 301 192 DVB specification for data broadcasting • no change • ETS 300 743 Subtitling systems • no change

  19. DATA BROADCASTING • EN 300 472 Specifications for conveying ITU-R System B Teletext • no change • ETR 289 Support for the use of scrambling and Conditional Access • no change

  20. DIGITAL TELEVISION Part 1SUMMARY • Standards examined - 13 • Clauses examined - 574 • Adopted unchanged - 527 • Amended - 47 [39] • New - 5 [3]

  21. Thank you for your attention

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