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    • CAN/CSA-ISO/IEC 14496-22-10 (R2015)

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    CAN/CSA-ISO/IEC 14496-22-10 (R2015)

    Information technology - Coding of audio-visual objects - Part 22: Open font format (Adopted ISO/IEC 14496-22:2009, second edition, 2009-08-15)
    SKU: 2420902 Published by CSA Group Publication Year 2010 Reaffirmed in 2015 494 pages Withdrawn

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    Standards development within the Information Technology sector is harmonized with international standards development. Through the CSA Technical Committee on Information Technology (TCIT), Canadians serve as the Canadian Advisory Committee (CAC) on ISO/IEC Joint Technical Committee 1 on Information Technology (ISO/IEC JTC1) for the Standards Council of Canada (SCC), the ISO member body for Canada and sponsor of the Canadian National Committee of the IEC. Also, as a member of the International Telecommunication Union (ITU), Canada participates in the International Telegraph and Telephone Consultative Committee (ITU-T).

    This Standard supersedes CAN/CSA-ISO/IEC 14496-22-07 (adoption of ISO/IEC 14496-22:2007, first edition, 2007-03-15).

    At the time of publication, ISO/IEC 14496-22:2009 is available from ISO and IEC in English only. CSA will publish the French version when it becomes available from ISO and IEC.

    Scope

    This part of ISO/IEC 14496 specifies the Open Font Format (OFF) specification, the TrueType 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 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 support; excellent support for international character sets;
    • excellent protection for font data;
    • smaller file sizes to make font distribution more efficient;
    • excellent support for advanced typographic control.

    PostScript 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 enable 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.
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    CAN/CSA-ISO/IEC 14496-22B-10 (R2015)

    CAN/CSA-ISO/IEC 14496-22B-10 (R2015) - Amendment 2:2013 to CAN/CSA-ISO/IEC 14496-22-10, Information technology - Coding of audio-visual objects - Part 22: Open font format - Amendment 2: Additional script and language tags (Adopted amendment 2:2012 to ISO/IEC 14496-22:2009)

    Withdrawn

    CAN/CSA-ISO/IEC 14496-22A-10 (R2015)

    CAN/CSA-ISO/IEC 14496-22A-10 (R2015) - Amendment 1:2012 to CAN/CSA-ISO/IEC 14496-22-10, Information technology - Coding of audio-visual objects - Part 22: Open font format - Amendment 1: Support for many-to-one range mappings (Adopted Amendment 1:2010 to ISO/IEC 14496-22:2009)

    Withdrawn
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