ISO/IEC 16500-3:1999

INTERNATIONAL ISO/IEC
STANDARD 16500-3
First edition
1999-12-15
Information technology — Generic digital
audio-visual systems —
Part 3:
Contours: Technology domain
Technologies de l'information — Systèmes audiovisuels numériques
génériques —
Partie 3: Contours: Domaine des technologies
Reference number
©
ISO/IEC 1999
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ii © ISO/IEC 1999 – All rights reserved

Contents Page
Foreword .iv
Introduction .v
1. Scope.1
2. Normative references.1
3. Definitions.5
4. Acronyms and abbreviations .5
5. Conventions .8
6. Concepts — Contours, Systems and Interoperability .8
Annex A (normative) Enhanced Digital Broadcast (EDB) Technology Domain .11
A.1 Scope . 11
A.2 Overview of system functions . 11
A.3 Cross Reference between System Requirements and System Functions . 17
A.4 List of tools required to implement the system functions. 28
Annex B (normative) Interactive Digital Broadcast (IDB) Technology Domain.51
B.1 Scope . 51
B.2 Overview of system functions . 51
B.3 Cross Reference between System Requirements and System Functions . 57
B.4 List of tools required to implement the system functions. 68
Bibliography.94
© ISO/IEC 1999 - All rights reserved DAVIC 1.3.1a Part 14 (1999)   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 part of ISO/IEC 16500 may be the subject of
patent rights. ISO and IEC shall not be held responsible for identifying any or all such patent rights.
International Standard ISO/IEC 16500-3 was prepared by DAVIC (Digital Audio-Visual Council) and was adopted,
under the PAS procedure, by Joint Technical Committee ISO/IEC JTC 1, Information technology, in parallel with its
approval by national bodies of ISO and IEC.
ISO/IEC 16500 consists of the following parts, under the general title Information technology — Generic digital
audio-visual systems:
� Part 1: System reference models and scenarios
� Part 2: System dynamics, scenarios and protocol requirements
� Part 3: Contours: Technology domain
� Part 4: Lower-layer protocols and physical interfaces
� Part 5: High and mid-layer protocols
� Part 6: Information representation
� Part 7: Basic security tools
� Part 8: Management architecture and protocols
� Part 9: Usage information protocols
Annexes A and B form a normative part of this part of ISO/IEC 16500.
iv    DAVIC 1.3.1a Part 14 (1999) © ISO/IEC 1999 - All rights reserved

Introduction
ISO/IEC 16500 defines the minimum tools and dynamic behavior required by digital audio-visual systems for
end-to-end interoperability across countries, applications and services. To achieve this interoperability, it defines
the technologies and information flows to be used within and between the major components of generic digital
audio-visual systems. Interoperability between these components and between individual sub-systems is assured
through specification of tools and specification of dynamic systems behavior at defined reference points. A
reference point can comprise one or more logical (non-physical) information-transfer interfaces, and one or more
physical signal-transfer interfaces. A logical interface is defined by a set of information flows and associated
protocol stacks. A physical interface is an external interface and is fully defined by its physical and electrical
characteristics. Accessible reference points are used to determine and demonstrate compliance of a digital audio-
visual subsystem with this international standard.
A summary of each part follows.
ISO/IEC 16500-1 (DAVIC 1.3.1a Part 2) defines the normative digital audio-visual systems technical framework.
It provides a vocabulary and a Systems Reference Model, which identifies specific functional blocks and
information flows, interfaces and reference points.
ISO/IEC 16500-2 (DAVIC 1.3.1a Part 12) defines system dynamic behavior and physical scenarios. It details the
locations of the control functional entities along with the normative protocols needed to support the systems
behavior. It is structured as a set of protocol walk-throughs, or “Application Notes”, that rehearse both the steady
state and dynamic operation of the system at relevant reference points using specified protocols. Detailed
dynamics are given for the following scenarios: video on demand, switched video broadcast, interactive
broadcast, and internet access.
ISO/IEC 16500-3 (DAVIC 1.3.1a Part 14) provides the normative definition of DAVIC Technology Contours.
These are strict sets of Applications, Functionalities and Technologies which allow compliance and conformance
criteria to be easily specified and assessed. This part of ISO/IEC 16500 contains the full details of two contours.
These are the Enhanced Digital Broadcast (EDB) and Interactive Digital Broadcast (IDB). ISO/IEC 16500-3
specifies required technologies and is a mandatory compliance document for contour implementations.
ISO/IEC 16500-4 (DAVIC 1.3.1a Part 8) defines the toolbox of technologies used for lower layer protocols and
physical interfaces. The tools specified are those required to digitize signals and information in the Core Network
and in the Access Network. Each tool is applicable at one or more of the reference points specified within the
Delivery System. In addition a detailed specification is provided of the physical interfaces between the Network
Interface Unit and the Set Top Unit and of the physical interfaces used to connect Set Top Boxes to various
peripheral devices (digital video recorder, PC, printer). The physical Delivery System mechanisms included are
copper pairs, coaxial cable, fiber, HFC, MMDS, LMDS, satellite and terrestrial broadcasting.
ISO/IEC 16500-5 (DAVIC 1.3.1a Part 7) defines the technologies used for high and mid-layer protocols for
ISO/IEC 16500 digital audio-visual systems. In particular, this part defines the specific protocol stacks and
requirements on protocols at specific interfaces for the content, control and management information flows.
ISO/IEC 16500-6 (DAVIC 1.3.1a Part 9) defines what the user will eventually see and hear and with what
quality. It specifies the way in which monomedia and multimedia information types are coded and exchanged.
This includes the definition of a virtual machine and a set of APIs to support interoperable exchange of program
code. Interoperability of applications is achieved, without specifying the internal design of a set top unit, by a
normative Reference Decoder Model which defines specific memory and behavior constraints for content
decoding. Separate profiles are defined for different sets of multimedia components.
ISO/IEC 16500-7 (DAVIC 1.3.1a Part 10) defines the interfaces and the security tools required for an
ISO/IEC 16500 system implementing security profiles. These tools include security protocols which operate
across one or both of the defined conditional access interfaces CA0 and CA1. The interface CA0 is to all security
and conditional access functions, including the high speed descrambling functions. The interface CA1 is to a
tamper resistant device used for low speed cryptographic processing. This cryptographic processing function is
implemented in a smart card.
ISO/IEC 16500-8 (DAVIC 1.3.1a Part 6) specifies the information model used for managing ISO/IEC 16500
systems. In particular, this part defines the managed object classes and their associated characteristics for
managing the access network and service-related data in the Delivery System. Where these definitions are taken
from existing standards, full reference to the required standards is provided. Otherwise a full description is
integrated in the text of this part. Usage-related information model is defined in ISO/IEC 16500-9.
© ISO/IEC 1999 - All rights reserved DAVIC 1.3.1a Part 14 (1999)   v

ISO/IEC 16500-9 (DAVIC 1.3.1a Part 11) specifies the interface requirements and defines the formats for the
collection of usage data used for billing, and other business-related operations such as customer profile
maintenance. It also specifies the protocols for the transfer of Usage Information into and out of the
ISO/IEC 16500 digital audio-visual system. In summary, flows of audio, video and audio-visual works are
monitored at defined usage data collection elements (e.g., servers, elements of the Delivery System, set-top
boxes). Information concerning these flows is then collected, processed and passed to external systems such as
billing or a rights administration society via a standardised usage data transfer interface.
Additional Information
ISO/IEC TR 16501 is an accompanying Technical Report. Further architectural and conformance information is
provided in other non-normative parts of DAVIC 1.3.1a (1999). A summary of these documents is included here
for information.
ISO/IEC TR 16501 (DAVIC 1.3.1a Part 1) provides a detailed listing of the functionalities required by users and
providers of digital audio-visual applications and systems. It introduces the concept of a contour and defines the
IDB (Interactive Digital Broadcast) and EDB (Enhanced Digital Broadcast) functionality requirements which are
used to define the normative contour technology toolsets provided in ISO/IEC 16500-3.
DAVIC 1.3.1a Parts 3, 4 and 5 are DAVIC technical reports. They provide additional architectural and other
information for the server, the delivery-system, and the Service Consumer systems respectively. Part 3 defines
how to load an application, once created, onto a server and gives information and guidance on the protocols
transmitted from the set-top user to the server, and those used to control the set-up and execution of a selected
application. Part 4 provides an overview of Delivery Systems and describes instances of specific DAVIC
networked service architectures. These include physical and wireless networks. Non-networked delivery (e.g.,
local storage physical media like discs, tapes and CD-ROMs) are not specified. Part 5 provides a Service
Consumer systems architecture and a description of the DAVIC Set Top reference points defined elsewhere in the
normative parts of the specification.
DAVIC 1.3.1a Part 13 is a DAVIC technical report, which provides guidelines on how to validate the systems,
technology tools and protocols through conformance and / or interoperability testing.
vi    DAVIC 1.3.1a Part 14 (1999) © ISO/IEC 1999 - All rights reserved

INTERNATIONAL STANDARD ©ISO/IEC ISO/IEC 16500-3:1999(E)
Information technology — Generic digital audio-visual systems — Part 3:
Contours: Technology domain
1. Scope
This
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