ISO/IEC 9636-6:1991 情報技術—コンピューターグラフィックス—グラフィカルデバイス（CGI）との対話のためのインターフェース技術—機能仕様—パート6：ラスター | 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.

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.

International Standard ISO/IEC 9636-6 was prepared by Joint Technical Committee ISO/IEC JTC 1, Information technology.

ISO/IEC 9636 consists of the following parts, under the general title Information technology — Computer graphics — Interfacing techniques for dialogues with graphical devices (CGI) — Functional specification:

• Part 1: Overview, profiles, and conformance
• Part 2: Control
• Part 3: Output
• Part 4: Segments
• Part 5: Input and echoing
• Part 6: Raster

Annexes A and B form an integral part of this part of ISO/IEC 9636. Annexes C, D, E, and F are for information only.

Introduction

This part of ISO/IEC 9636 describes the functions of the Computer Graphics Interface concerned with raster graphic specific devices.

The functional capability incorporated in this part of ISO/IEC 9636 is concerned with creating, manipulating, displaying and retrieving information stored as pixel data below the CGI in a device independent, yet efficient manner.

The functionality described in this part of ISO/IEC 9636 pertains to Virtual Devices of class OUTPUT and OUTIN with display type RASTER.

1 Scope

This part of ISO/IEC 9636 describes those functions of the Computer Graphics Interface concerned with creating, modifying, retrieving, and displaying portions of an image stored as pixel data. It includes functionality for combining such images.

This part of ISO/IEC 9636 is part 6 of ISO/IEC 9636 and should be read in conjunction with ISO/IEC 9636-1, ISO/IEC 9636-2, and ISO/IEC 9636-3. The relationship of this part of ISO/IEC 9636 to the other parts of ISO/IEC 9636 is described in ISO/IEC 9636-1 (see ISO/IEC 9636-1,5.2.1 and figures 6 and 7) and in clause 4.

The functionality described in this part of ISO/IEC 9636 pertains to Virtual Devices of class OUTPUT and OUTIN with display type RASTER.

2 Normative references

The following standards contain provisions which, through reference in this text, constitute provisions of this part of ISO/IEC 9636. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this part of ISO/IEC 9636 are encouraged to investigate the possibility of applying the most recent editions of the standards listed below. Members of IEC and ISO maintain registers of currently valid International Standards.