DRAFT AUSTRALIAN STANDARD - DIGITAL TELEVISION PART 1

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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

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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

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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

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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

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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_at_ML

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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_at_ML bounds

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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

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MULTIPLEX TRANSPORT STREAM

• ETR 154 - Implementation Guidelines for the use
  MPEG-2 Systems
• Changes necessary to address inclusion of AC3

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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

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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

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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

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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

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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

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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

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ELEMENTARY STREAM VIDEO

• AS/NZ 13818-2
• Note that this may have to refer to ISO/IEC 13818

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ELEMENTARY STREAM AUDIO

• Addition of AC3 audio with revisions to ATSC A/52
  constraints
• Total bit-rate
• Audio sampling rate

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DATA BROADCASTING

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

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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

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DIGITAL TELEVISION Part 1SUMMARY

• Standards examined - 13
• Clauses examined - 574
• Adopted unchanged - 527
• Amended - 47 39
• New - 5 3

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Thank you for your attention