1 DRAFT AUSTRALIAN STANDARD - DIGITAL TELEVISION The SI Details
Dec 18, 2015
2
CT/2/C TELEVISION TRANSMITTING EQUIPMENTSERVICE INFORMATION SUB COMMITTEE
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.
3
CT/2/C TELEVISION TRANSMITTING EQUIPMENTSERVICE INFORMATION SUB COMMITTEE
General Considerations
• Final Publication on CD-ROM together with
reference standards and links.
• Periodically updated to latest approved texts
4
CT/2/C TELEVISION TRANSMITTING EQUIPMENTSERVICE INFORMATION SUB COMMITTEE
DVB Standards
• Some DVB Standards are “Living Documents”.
• Some DVB Blue Books are still updated.
• Some new DVB Blue Books are still produced.
5
CT/2/C TELEVISION TRANSMITTING EQUIPMENTSERVICE INFORMATION SUB COMMITTEE
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.
6
CT/2/C TELEVISION TRANSMITTING EQUIPMENTSERVICE INFORMATION SUB COMMITTEE
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,
7
CT/2/C TELEVISION TRANSMITTING EQUIPMENTSERVICE INFORMATION SUB COMMITTEE
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.
8
CT/2/C TELEVISION TRANSMITTING EQUIPMENTSERVICE INFORMATION SUB COMMITTEE
Requirements for Australia• Australian broadcasters would need to take out
network ID registrations with DVB/ETSI.
9
CT/2/C TELEVISION TRANSMITTING EQUIPMENTSERVICE INFORMATION SUB COMMITTEE
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
10
CT/2/C TELEVISION TRANSMITTING EQUIPMENTSERVICE INFORMATION SUB COMMITTEE
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
11
CT/2/C TELEVISION TRANSMITTING EQUIPMENTSERVICE INFORMATION SUB COMMITTEE
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.
12
CT/2/C TELEVISION TRANSMITTING EQUIPMENTSERVICE INFORMATION SUB COMMITTEE
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.
13
CT/2/C TELEVISION TRANSMITTING EQUIPMENTSERVICE INFORMATION SUB COMMITTEE
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.
14
CT/2/C TELEVISION TRANSMITTING EQUIPMENTSERVICE INFORMATION SUB COMMITTEE
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
15
CT/2/C TELEVISION TRANSMITTING EQUIPMENTSERVICE INFORMATION SUB COMMITTEE
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.
16
CT/2/C TELEVISION TRANSMITTING EQUIPMENTSERVICE INFORMATION SUB COMMITTEE
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
17
CT/2/C TELEVISION TRANSMITTING EQUIPMENTSERVICE INFORMATION SUB COMMITTEE
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
18
CT/2/C TELEVISION TRANSMITTING EQUIPMENTSERVICE INFORMATION SUB COMMITTEE
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
19
CT/2/C TELEVISION TRANSMITTING EQUIPMENTSERVICE INFORMATION SUB COMMITTEE
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