DRAFT AUSTRALIAN STANDARD - DIGITAL TELEVISION PART 1

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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 2

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 3

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 4

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 5

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 6

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 when resolution exceeds the MP@ML bounds 7

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 8

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

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 10

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 11

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 12

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 13

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 14

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 15

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

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

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

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 19

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

Thank you for your attention

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