isoiec13818-6


Reference number ISO/IEC 13818-6:1998/Amd.1:2000(E) © ISO/IEC 2000 INTERNATIONAL STANDARD ISO/IEC 13818-6 First edition 1998-09-01 AMENDMENT 1 2000-10-15 Information technology — Generic coding of moving pictures and associated audio information — Part 6: Extensions for DSM-CC AMENDMENT 1 Additions to support data broadcasting Technologies de l'information — Codage générique des images animées et des informations sonores associées — Partie 6: Extensions pour DSM-CC AMENDEMENT 1 Additions à la diffusion de soutien de données ISO/IEC 13818-6:1998/Amd.1:2000(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In downloading this file, parties accept therein the responsibility of not infringing Adobe's licensing policy. The ISO Central Secretariat accepts no liability in this area. Adobe is a trademark of Adobe Systems Incorporated. Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below. © ISO/IEC 2000 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISO's member body in the country of the requester. ISO copyright office Case postale 56 · CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyright@iso.ch Web www.iso.ch Printed in Switzerland ii © ISO/IEC 2000 – All rights reserved ISO/IEC 13818-6:1998/Amd.1:2000(E) © ISO/IEC 2000 – All rights reserved iii 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 1 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 13818-6:1998/Amd.1:2000(E) © ISO/IEC 2000 — All rights reserved 1 Information technology — Generic coding of moving pictures and associated audio information — Part 6: Extensions for DSM-CC AMENDMENT 1: Additions to support data broadcasting 1) Replace the semantic definition of DownloadInfoIndication moduleSize in subclause 7.3.2 with the following: " The moduleSize field is the length, in bytes, of the described module. A value of zero indicates that the module size is not specified. " 2) Replace the last paragraph in subclause 9.2.1 with the following: " MPEG-2 Systems, ISO/IEC 13818-1:2000, defines generic table section syntax that DSM-CC uses to provide re- assembly of Transport Stream packets into DSM-CC messages. This specification defines additional semantics on ISO/IEC 13818-1:2000 sections to support additional DSM-CC requirements. Called DSMCC_section and DSMCC_Addressable_section, the syntax is compatible with the generic section syntax so that compliant MPEG-2 Systems decoders may be used. " 3) In subclause 9.2.2, replace every occurrence of "private_section" with "generic_section" 4) In subclause 9.2.2, replace every occurrence of "private_indicator" with "complement_indicator". 5) Replace Table 9-3 with the following: " Table 9-3 DSM-CC table_id assignments table_id DSMCC Section Type 0x00 - 0x37 ITU-T Rec. H.222.0 | ISO/IEC 13818-1 defined 0x38 - 0x39 ISO/IEC 13818-6 reserved 0x3A DSM-CC Sections containing multi-protocol encapsulated data 0x3B DSM-CC Sections containing U-N Messages, except Download Data Messages 0x3C DSM-CC Sections containing Download Data Messages 0x3D DSM-CC Sections containing Stream Descriptors 0x3E DSM-CC Sections containing private data 0x3F DSM-CC Addressable Sections 0x40 - 0xFE User private 0xFF forbidden " 6) In subclause 9.2.2.1 replace the corresponding paragraphs with the following: " version_number -- This field is a 5-bit field. If the value of the table_id field equals 0x3A or 0x3B, this field shall be set to zero. If the value of the table_id field equals 0x3C and a DownloadDataBlock Message is conveyed, this field shall have the value of the least significant 5 bits of the moduleVersion field of the conveyed DownloadDataBlock Message. If the value of the table_id field equals 0x3C and a DownloadDataRequest Message is conveyed, this ISO/IEC 13818-6:1998/Amd.1:2000(E) © ISO/IEC 2000 — All rights reserved2 field shall be set to zero. If the value of table_id equals 0x3D, then this field shall be set as defined in ISO/IEC 13818-1:2000. If the value of the table_id field equals 0x3E, then the value and use of this field are defined by the user. current_next_indicator -- This is a 1 bit flag. If the value of the table_id field equals 0x3A, 0x3B or 0x3C, this bit shall be set to ‘1’. Otherwise, this field shall be set as defined in ISO/IEC 13818-1:2000. section_number -- This field is a 8-bit field. If the value of the table_id field equals 0x3A or 0x3B, this field shall be set to zero. If the value of the table_id field equals 0x3C, this field shall have a value of the least significant 8 bits of the blockNumber field of the conveyed DownloadDataBlock or DownloadDataRequest Message. If the value of the table_id field is not in the range of 0x3A to 0x3C, then this field shall be set as defined in ISO/IEC 13818-1:2000. last_section_number -- This field is a 8-bit field. This field specifies the number of the last section (that is, the section with the highest section number) of the table of which this section is a part. (Note: This means that this field shall be set to the maximum value that is encoded in the section_number field for the same table_id, table_id_extension and version_number field). " 7) Delete the footnote under Table 9-2. 8) Add the following to subclause 9.2.2.1 after last_section_number: " LLCSNAP() -- This structure shall contain the datagram according to the ISO/IEC 8802-2 Logical Link Control (LLC) and ISO/IEC 8802-1a SubNetwork Attachment Point (SNAP) specifications. For more information, see subclause 9.2.5, Encapsulation within MPEG-2 Transport Streams. " 9) Add the following subclauses after subclause 9.2.2: " 9.2.3 DSM-CC Addressable Sections The DSMCC_addressable_section() format is used to send a DSM-CC encapsulated datagram to a specific device or group of devices. This format embeds the deviceId of the target device into the section header to allow address filtering at the section level. It also supports scrambling mechanisms. The following table defines the format and semantics of the DSMCC_addressable_section: Table 9-4 Addressable Sections Syntax No. of bits Mnemonic DSMCC_addressable_section() { table_id 8 uimsbf '0' 1 error_detection_type 1 bslbf reserved 2 bslbf addressable_section_length 12 uimsbf deviceId[7..0] 8 uimsbf deviceId[15..8] 8 uimsbf reserved 2 bslbf payload_scrambling_control 2 bslbf address_scrambling_control 2 bslbf LLCSNAP_flag 1 bslbf '1' 1 section_number 8 uimsbf last_section_number 8 uimsbf deviceId[23..16] 8 uimsbf deviceId[31..24] 8 uimsbf deviceId[39..32] 8 uimsbf ISO/IEC 13818-6:1998/Amd.1:2000(E) © ISO/IEC 2000 — All rights reserved 3 deviceId[47..40] 8 uimsbf if (LLCSNAP_flag == ‘1’) { LLCSNAP() } else{ for (j=0;j
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