BS ISO/IEC 14496-22:2015规定了开放式字体格式（OFF）规范，即TrueType™我 和紧凑字体格式（CFF）轮廓格式，以及TrueType提示语言。许多的 本文档中对TrueType和PostScript的引用都以开放式字体格式存在 字体结合了这两种技术。 注:本规范基于OpenType®ii字体格式规范，在技术上 相当于该规格。多媒体应用需要广泛的媒体- 相关标准。除了典型的 音频和视频应用、多媒体演示包括可缩放的2D图形和文本 支持世界上所有的语言。忠实复制可伸缩的多媒体内容需要 其他组件包括可缩放字体技术。开放式字体格式是一种扩展 添加对PostScript字体数据的支持。关闭字体和操作系统 支持非字体的系统服务为用户提供了安装和使用字体的简单方法， 字体是否包含TrueType轮廓或CFF（PostScript）轮廓。开放式字体格式实现了以下目标:更广泛的多平台支持出色的国际字符集支持出色的字体数据保护更小的文件大小使字体分发更高效的支持高级排版控制PostScript？iii非字体中包含的数据可以直接光栅化或转换为TrueType 用于渲染的大纲格式，具体取决于主机中安装的光栅化器 操作系统。但用户模型是一样的:关闭字体就行了。用户将不需要这样做 了解非字体中的轮廓数据类型。字体创建者可以使用任何大纲格式 他们觉得为他们的工作提供了最好的功能集，而不用担心限制字体的使用 可用性。OFF fonts可以包括OFF-Layout表，它允许字体创建者设计更广泛的字体 国际和高端排版字体。非布局表包含有关glyph的信息 替换、字形定位、对齐和基线定位，支持文本处理 改进文本布局的应用程序。与TrueType字体一样，OFF字体允许使用Unicode编码处理大型字形集。 这种编码允许广泛的国际支持，以及对印刷字形变体的支持。 此外，非字体可能包含数字签名，这允许操作系统和 浏览应用程序以识别字体文件的来源和完整性，包括嵌入式字体文件 在使用之前在网络文档中获取。此外，字体开发人员还可以对嵌入进行编码 非字体中的限制，不能在开发人员签名的字体中更改。交叉引用:ISO/IEC 10646ISO/IEC 14496-18ISO/IEC 15948:2004IEC 61966-2-1:1999/Amd 1:2003购买本文件时提供的所有当前修订版均包含在购买本文件中。

BS ISO/IEC 14496-22:2015 specifies the Open Font Format (OFF) specification, the TrueType™i and Compact Font Format (CFF) outline formats, and the TrueType hinting language. Many references to both TrueType and PostScript exist throughout this document, as Open Font Format fonts combine the two technologies. NOTE This specification is based on the OpenType® ii font format specification, and is technically equivalent to that specification.Multimedia applications require a broad range of media-related standards. In addition to the typical audio and video applications, multimedia presentations include scalable 2D graphics and text supporting all languages of the world. Faithful reproduction of scalable multimedia content requires additional components including scalable font technology. The Open Font Format is an extension of the TrueType font format, adding support for PostScript font data. OFF fonts and the operating system services which support OFF fonts provide users with a simple way to install and use fonts, whether the fonts contain TrueType outlines or CFF (PostScript) outlines.The Open Font Format addresses the following goals:broader multi-platform supportexcellent support for international character setsexcellent protection for font datasmaller file sizes to make font distribution more efficientexcellent support for advanced typographic controlPostScript?iii data included in OFF fonts may be directly rasterized or converted to the TrueType outline format for rendering, depending on which rasterizers have been installed in the host operating system. But the user model is the same: OFF fonts just work. Users will not need to be aware of the type of outline data in OFF fonts. And font creators can use whichever outline format they feel provides the best set of features for their work, without worrying about limiting a font's usability.OFF fonts can include the OFF Layout tables, which allow font creators to design broader international and high-end typographic fonts. The OFF Layout tables contain information on glyph substitution, glyph positioning, justification, and baseline positioning, enabling text-processing applications to improve text layout.As with TrueType fonts, OFF fonts allow the handling of large glyph sets using Unicode encoding. Such encoding allows broad international support, as well as support for typographic glyph variants. Additionally, OFF fonts may contain digital signatures, which allows operating systems and browsing applications to identify the source and integrity of font files, including embedded font files obtained in web documents, before using them. Also, font developers can encode embedding restrictions in OFF fonts which cannot be altered in a font signed by the developer.Cross References:ISO/IEC 10646ISO/IEC 14496-18ISO/IEC 15948:2004IEC 61966-2-1:1999/Amd 1:2003All current amendments available at time of purchase are included with the purchase of this document.