ISO/IEC 13818-6:1998/Amd 2:2000

INTERNATIONAL ISO/IEC
STANDARD 13818-6
First edition
1998-09-01
AMENDMENT 2
2000-06-01
Information technology — Generic coding
of moving pictures and associated audio
information —
Part 6:
Extensions for DSM-CC
AMENDMENT 2: Additions to support
synchronized download services, opportunistic
data services and resource announcement in
broadcast and interactive services
Technologies de l'information — Codage générique des images animées
et des informations sonores associées —
Partie 6: Extensions pour DSM-CC
AMENDEMENT 2: Ajouts pour supporter les services de téléchargement
vers l'aval synchronisés, les services de données opportunistes et les
annonces de ressources dans les services de diffusion et interactifs
Reference number
ISO/IEC 13818-6:1998/Amd.2:2000(E)
©
ISO/IEC 2000
ISO/IEC 13818-6:1998/Amd.2:2000(E)
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ii © ISO/IEC 2000 – All rights reserved

ISO/IEC 13818-6:1998/Amd.2:2000(E)
Foreword
ISO (the International Organization for Standardization) and IEC (the International Electrotechnical Commission)
form the specialized system for worldwide standardization. National bodies that are members of ISO or IEC
participate in the development of International Standards through technical committees established by the
respective organization to deal with particular fields of technical activity. ISO and IEC technical committees
collaborate in fields of mutual interest. Other international organizations, governmental and non-governmental, in
liaison with ISO and IEC, also take part in the work.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 3.
In the field of information technology, ISO and IEC have established a joint technical committee, ISO/IEC JTC 1.
Draft International Standards adopted by the joint technical committee are circulated to national bodies for voting.
Publication as an International Standard requires approval by at least 75 % of the national bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this Amendment may be the subject of patent
rights. ISO and IEC shall not be held responsible for identifying any or all such patent rights.
Amendment 2 to International Standard ISO/IEC 13818-6:1998 was prepared by Joint Technical Committee
ISO/IEC JTC 1, Information technology, Subcommittee SC 29, Coding of audio, picture, multimedia and
hypermedia information.
© ISO/IEC 2000 – All rights reserved iii

ISO/IEC 13818-6:1998/Amd.2:2000(E)
Information technology — Generic coding of moving pictures and
associated audio information —
Part 6:
Extensions for DSM-CC
AMENDMENT 2: Additions to support synchronized download
services, opportunistic data services and resource announcement
in broadcast and interactive services
1) Replace Table 2-5 with the following table:
"
Table 2-5 DSM-CC adaptationTypes
Adaptation Description
Type
0x00 ISO/IEC 13818-6 Reserved.
0x01 DSM-CC Conditional Access adaptation format.
0x02 DSM-CC User ID adaptation format.
0x03 ISO/IEC 13818-6 Reserved.
0x04 DSM-CC Synchronized Download Protocol adaptation format.
0x05-0x7F ISO/IEC 13818-6 Reserved.
0x80-0xFF User Defined adaptation type.
"
2) Add the new subclause 2.1.4:
"
2.1.4 DSM-CC Synchronized Download Protocol Adaptation Format
Table 2.9 indicates the format of the DSM-CC Synchronized Download protocol adaptation fields.
Table 2-9 DSM-CC Synchronized Download Protocol Adaptation Format
Syntax Num. of bits
dsmccSynchronizedDownloadProtocol
{
reserved 16
'0010' 4
PTS [32.30] 3
marker_bit 1
PTS [29.15] 15
marker_bit 1
PTS [14.0] 15
marker_bit 1
}
The reserved field is ISO/IEC 13818-6 reserved.
marker_bit – This 1-bit field shall be set to “1”.
PTS - The PTS is a 33-bit number coded in three separate fields as defined in ITU-T Rec. H.222.0 | ISO/IEC
13818-1. This field shall refer to the first access unit commencing in the data module.
© ISO/IEC 2000 – All rights reserved 1

ISO/IEC 13818-6:1998/Amd.2:2000(E)
"
3) At the end of subclause 7.1, add the following text:
"
The Synchronized Download protocol may be used to support the delivery to Clients of non-streaming data
modules synchronized with another program element. The Synchronized Download protocol shall only be
applicable to a non-flow controlled scenario in an MPEG-2 Transport Stream. The synchronization is achieved by
the inclusion of an ITU-T Rec. H.222.0 | ISO/IEC 13818-1 Presentation Time Stamp into the adaptation header
fields of the Download Data message header.
"
4) At the end of subclause 7.1.1, and before Figure 7-4, add the following text:
"
The Synchronized Download protocol shall be applicable only to Network Model 4.
"
5) Add the new subclause 9.2.8:
"
9.2.8 DSM-CC Synchronized Download Protocol
The following restrictions shall apply to the DSM-CC sections and the MPEG-2 Transport Stream packets
encapsulating the DSM-CC Synchronized Download Protocol.
� The PTS field in the DSM-CC Synchronized Download Protocol shall be present only in the DSMCC_section
conveying the first block of the data module (i.e., the section_number field of the DSMCC_section is equal to
0).
� No more than one DSMCC_section in which the DSM-CC Synchronized Download Protocol is encapsulated,
shall start in any Transport Stream packet.
� The pointer field in MPEG-2 Transport Stream packets conveying the start of a DSMCC_section in which the
DSM-CC Synchronized Download Protocol is encapsulated, shall be equal to 0.
"
6) Replace Table 9-4 with the following table:
"
Table 9-4 DSM-CC Stream Types
stream_type Description
0x00-0x09 ITU-T Rec. H.222.0 | ISO/IEC 13818-1 defined
0x0A Multi-protocol Encapsulation
0x0B DSM-CC U-N Messages
0x0C DSM-CC Stream Descriptors
0x0D DSM-CC Sections (any type, including private data)
0x0E - 0x13 ITU-T Rec. H.222.0 | ISO/IEC 13818-1 reserved
0x14 DSM-CC Synchronized Download Protocol
0x15 - 0x7F ITU-T Rec. H.222.0 | ISO/IEC 13818-1 reserved
0x80 - 0xFF User private
"
2 © ISO/IEC 2000 – All rights reserved

ISO/IEC 13818-6:1998/Amd.2:2000(E)
7) Addthefollowingtotheendofitemized list insubclause 9.2.3“DSM-CC StreamTypes”
"
� Only DSMCC_sections with table_id 0x3B or 0x3C shall be contained within Transport Stream packets of
stream_type 0x14.
"
8) Replace Table 2-2 with the following table:
"
Table 2-2 MPEG-2 DSM-CC dsmccType values
dsmccType Description
0x00 ISO/IEC 13818-6 Reserved
0x01 Identifies the message as an ISO/IEC 13818-6 IS User-to-
Network configuration message.
0x02 Identifies the message as an ISO/IEC 13818-6 IS User-to-
Network session message.
0x03 Identifies the message as an ISO/IEC 13818-6 IS Download
message.
0x04 Identifies the message as an ISO/IEC 13818-6 IS SDB
Channel Change Protocol message.
0x05 Identifies the message as an ISO/IEC 13818-6 IS User-to-
Network pass-thru message.
0x06 SMPTE 325M Opportunistic Flow Control Protocol
0x07-0x7F ISO/IEC 13818-6 Reserved.
0x80-0xFF User Defined message type.
"
9) After Table 2-2, add the following statement:
"
The SMPTE 325M Opportunistic Flow Control Protocol is used for communication between a data server and an
MPEG-2 emission multiplexer in support of opportunistic data services. Opportunistic data services attempt to fill
any bandwidth available in the emission multiplex with broadcast data on a nearly instantaneous basis. In such a
situation, the SMPTE 325M Flow Control Protocol is used by the emission multiplexer to request data packet
...