1. 1 DRAFT AUSTRALIAN STANDARD - DIGITAL TELEVISION PART 1

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

3. 3 CHANNEL CODING and MODULATION EN 300744 - Framing Structure,Channel Coding and ModulationEN 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. 4 CHANNEL CODING and MODULATION EN 300744 - Framing Structure,Channel Coding and ModulationEN 300744 - Framing Structure,Channel Coding and Modulation –Spectrum mask for co-located adjacent channel analogue –Spectrum mask for co-located adjacent channel digital

5. 5 CHANNEL CODING and MODULATION TS 101 191 DVB mega-frame for Single Frequency Network SynchronizationTS 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. 6 MULTIPLEX & TRANSPORT STREAM ETR 154 - Implementation Guidelines for the use MPEG-2 SystemsETR 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. 7 MULTIPLEX & TRANSPORT STREAM ETR 154 - Implementation Guidelines for the use MPEG-2 SystemsETR 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 when resolution exceeds the MP@ML bounds

8. 8 MULTIPLEX & TRANSPORT STREAM ETR 154 - Implementation Guidelines for the use MPEG-2 SystemsETR 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. 9 MULTIPLEX & TRANSPORT STREAM ETR 154 - Implementation Guidelines for the use MPEG-2 SystemsETR 154 - Implementation Guidelines for the use MPEG-2 Systems –Changes necessary to address inclusion of AC3

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

11. 11 MULTIPLEX & TRANSPORT STREAM EN 300 468 - Specification for Service InformationEN 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. 12 MULTIPLEX & TRANSPORT STREAM EN 300 468 - Specification for Service InformationEN 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. 13 MULTIPLEX & TRANSPORT STREAM EN 300 468 - Specification for Service InformationEN 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. 14 MULTIPLEX & TRANSPORT STREAM EN 300 468 - Specification for Service InformationEN 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. 15 MULTIPLEX & TRANSPORT STREAM ETR 211 Implementation and usage of Service InformationETR 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 codesETR 162 Allocation of Service Information codes –Yet to be addressed

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

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

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

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

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

21. 21 Thank you for your attention