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DRAFT AUSTRALIAN STANDARD - DIGITAL

TELEVISION

The SI Details

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General Considerations

• Australian Standard will set the minimum

requirements for Baseline IRDs.

• Once the Standard is defined all decoders need

to be backward compatible.

• The Australian Standard references ETSI, AS/NZ,

DVB, ITU, IEC/ISO and DAVIC standards.

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General Considerations

• Final Publication on CD-ROM together with

reference standards and links.

• Periodically updated to latest approved texts

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DVB Standards

• Some DVB Standards are “Living Documents”.

• Some DVB Blue Books are still updated.

• Some new DVB Blue Books are still produced.

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DVB Standards

• DVB standards are published and updated through

additions and revisions to the ETSI standards.

• Latest advice from the DVB Project Office, the DVB

FTP site and the DVB CD-ROM regarding the status

of the DVB and ETSI standards.

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Awareness of Change

• Australian manufacturers need to keep abreast of

changes to the DVB standards by;

• obtaining updated standards from ETSI,

• obtaining new or updated DVB Blue Books,

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Awareness of Change

• obtaining the latest release of the DVB CD-ROM,

• becoming DVB members and contributing to the

DVB group activities,

• contacting the DVB Project Office in Geneva.

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Requirements for Australia• Australian broadcasters would need to take out

network ID registrations with DVB/ETSI.

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ETSI ETR 154

Implementation guidelines for the use of MPEG-2

• Clause 4.1.6. stream_id Accept

• Clause 4.1.8.1 video_stream_descriptor and audio_stream_descriptor Accept

• Clause 4.1.8.2 hierarchy_descriptor Accept

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ETSI ETR 154

Implementation guidelines for the use of MPEG-2

• Clause 4.8.8.5 target_background_grid_descriptor

Accept

• Clause 4.1.10 Storage Media Interoperability Accept

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ETSI ETR 154

Implementation guidelines for the use of MPEG-2

• Annex A (Display and Resolution formats) Modify

• The Australian definition of HDTV requires;

• a minimum value of horizontal_size_value of 720 pixels at a 50 Hz progressive scan frame rate or,

• a minimum value of 1440 pixels at a 25 Hz interlaced frame rate.

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ETSI ETR 154

Implementation guidelines for the use of MPEG-2

• For Australian HDTV the maximum vertical_size_value is 1080 pixels (active lines).

• ETR 154 Annex A contains a vertical_size_value of 1152 pixels (lines) for an interlaced format.

• We note that while Annex A is Informative, the Annex will be a reference for IRD design and manufacture.

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ETSI ETR 154

Implementation guidelines for the use of MPEG-2

• Annex B Active Format Descriptor

Accept as Optional

• The AFD provides Wide Screen Signalling and Pan/ Scan metadata giving the broadcaster control of displayed aspect ratio.

• Receiver/chip manufacturers should note the Active Format Descriptor is optional.

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ETSI ETR 154

Implementation guidelines for the use of MPEG-2

• Broadcasters should not assume that all receivers will use the latest chipsets which provide all options.

• The Active Format Descriptor has been implemented by the UK Digital Television Group

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ETSI ETR 154

Implementation guidelines for the use of MPEG-2

• Annex C (Implementation of AC-3) Accept

• Annex D (Audio Control Metadata for MPEG audio) Accept as

Optional

• Broadcasters should not assume that all receivers will use the latest chipsets which provide all options.

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ETSI ETS 300 468Specification for Service Information (SI)

in DVB systems

• Clause 6.2.3 Component descriptor

Accept SI-DAT 441 Rev. 7

• Clause 6.2.4 Content descriptor

Accept Australian Tables

• Clause 6.2.8.3 Terrestrial delivery system descriptor Accept SI-DAT 441 Rev. 7

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ETSI ETS 300 468Specification for Service Information (SI)

in DVB systems

• Clause 6.2.11 Linkage descriptor Accept

• Clause 6.2.12 Local time offset descriptor Accept SI-DAT 441

Rev. 7

• Clause 6.2.20 Parental rating descriptor Accept Australian

Tables

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ETSI ETS 300 468Specification for Service Information (SI)

in DVB systems

• Clause 6.2.22 Private data specifier descriptor Accept SI-DAT

441 Rev. 7

• Logical channel descriptor Accept as Optional

• Country Region ID Accept Australian Tables

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ETSI ETR 211Guidelines on implementation and usage

of Service Information (SI)

• Clause 4.2.1.2.1 Delivery system descriptorsAccept

• Clause 4.2.1.2.2 Service list descriptor Accept

• Clause 4.2.4.7 Parental rating descriptor Accept Australian

Tables

• Clause 4.4.2 Terrestrial delivery systems Accept

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Additional Matters

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