ISO/IEC TR 15413:2001 情報技術—フォントサービス—抽象的なサービス定義 | ページ 2

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, 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.

In exceptional circumstances, when a technical committee has collected data of a different kind from that which is normally published as an International Standard ("state of the art", for example), it may decide by a simple majority vote of its participating members to publish a Technical Report. A Technical Report is entirely informative in nature and does not have to be reviewed until the data it provides are considered to be no longer valid or useful.

Attention is drawn to the possibility that some of the elements of this Technical Report may be the subject of patent rights. ISO and IEC shall not be held responsible for identifying any or all such patent rights.

ISO/IEC TR 15413 was prepared by Joint Technical Committee ISO/IEC JTC 1, Information technology, Subcommittee SC 34, Document description and processing languages.

Introduction

The technology to access large font libraries has become an increasingly important concern of document processing, electronic publishing, and application support facilities such as printing and display services.

This Technical Report specifies a system-independent interface to font services that provides for distribution, management and use of font resources.

This Technical Report is organized as follows:

• The general model of font services and its relationship to other parts of the document processing model are specified.
• The Abstract Font Service Interface (AFSI), which defines the facilities to access font resources in a system-independent way, is specified.
• Statements covering the conformance of font service systems are provided.

1 Scope

This Technical Report provides the access facilities which can be used for creation, distribution, management, and use of font resources conforming to the architecture of ISO/IEC 9541.

This Technical Report is intended to be used in a variety of configurations meeting a variety of connectivity needs, including communication protocols, application programming interfaces, and application services.

This Technical Report defines an abstract interface to the font access facilities. This Technical Report will not specify the concrete syntax for a language binding of font service facilities, nor the concrete protocol used to communicate between the systems that provides or uses the font service facilities.

This Technical Report is intended for use in a wide variety of document processing environments, including:

• authoring;
• formatting and page layout;
• printing and display services;
• electronic publishing via removable media and/or information network.

2 References

3 Terms and definitions

For the purposes of this Technical Report, the following terms and definitions apply.