ISO/IEC 14496-22:2007 信息技术 音频-可视对象的编码 第22部分：开放式字体格式

标准编号：ISO/IEC 14496-22:2007

中文名称：信息技术 音频-可视对象的编码 第22部分：开放式字体格式

英文名称：Information technology — Coding of audio-visual objects — Part 22: Open Font Format

发布日期：2007-03

标准范围

ISO/IEC 14496-22:20 07“开放字体格式规范”定义了用于在不同多媒体应用中交换数字字体信息的可扩展字体数据格式表示。历史上，可缩放数字字体有两种基本风格:PostScript(Adobe Systems Incorporated的注册商标)Type 1和TrueType(Apple Computer Incorporated的商标)。两者都是多平台大纲字体标准。OpenType（微软公司的注册商标）是将PostScript和TrueType这两种功能最强大、使用最广泛的字体格式统一为一种单一的字体格式。它旨在处理具有复杂排版要求的语言，如阿拉伯语，支持交替字形和上下文连字替换。ISO/IEC 14496-22:2007定义了基于OpenType规范1.4版的可缩放数字字体的数据格式。ISO/IEC 14496-22解决了以下目标:基于高级TrueType提示功能的字形高质量缩放；更广泛的多平台支持；更好地支持国际字符集和Unicode标准；使用字体文件中的数字签名更好地保护字体数据；更小的文件大小，使字体分发更有效；更广泛地支持高级排版功能和文本布局。

ISO/IEC 14496-22:2007, "Open Font Format Specification", defines the extensible font data format representation for interchange of digital font information in different multimedia applications.Historically, scalable digital fonts have come in two basic flavours: PostScript (registered trademark of Adobe Systems Incorporated) Type 1 and TrueType (trademark of Apple Computer Incorporated). Both of them are multi-platform outline font standards. OpenType (registered trademark of Microsoft Corporation) is the unification of these two most powerful and widely used font formats, PostScript and TrueType, into a single font format. Designed to handle languages with complex typographic requirements, such as Arabic, it supports alternate glyphs and contextual ligature substitution.ISO/IEC 14496-22:2007 defines the data format for scalable digital fonts that is based on the OpenType specification, version 1.4.ISO/IEC 14496-22 addresses the following goals:

• high-quality scaling of glyphs, based on the advanced TrueType hinting capabilities;
• broader multi-platform support;
• better support for international character sets and the Unicode standard;
• better protection for font data using digital signatures in font files;
• smaller file sizes to make font distribution more efficient;
• broader support for advanced typographic features and text layout.

标准预览图