ISO/IEC 9541-1:1991/Amd 2:1998

Information technology — Font information interchange — Part 1: Architecture — Amendment 2: Minor enhancements to the architecture to address font technology advances

Technologies de l'information — Échange d'informations sur les fontes — Partie 1: Architecture — Amendement 2: Améliorations mineures de l'architecture pour traiter les avances technologiques des fontes

General Information

• Status: Withdrawn
• Publication Date: 19-Dec-1998
• Withdrawal Date: 19-Dec-1998
• ICS: 35.240.30 - IT applications in information, documentation and publishing
• Technical Committee: ISO/IEC JTC 1/SC 34 - Document description and processing languages
• Drafting Committee: ISO/IEC JTC 1/SC 34 - Document description and processing languages
• Current Stage: 9599 - Withdrawal of International Standard
• Completion Date: 13-Aug-2012

Relations

• Amends: ISO/IEC 9541-1:1991 - Information technology — Font information interchange — Part 1: Architecture
• Effective Date: 06-Jun-2022
• Revised: ISO/IEC 9541-1:2012 - Information technology — Font information interchange — Part 1: Architecture
• Effective Date: 11-Jul-2009
• Child: ISO/IEC 9541-1:1991 - Information technology — Font information interchange — Part 1: Architecture
• Effective Date: 15-Apr-2008
• Consolidated By: ISO 3471:2008 - Earth-moving machinery — Roll-over protective structures — Laboratory tests and performance requirements
• Effective Date: 06-Jun-2022

Standards Content (Sample)

INTERNATIONAL ISO/IEC
STANDARD 9541-1
First edition
1991-09-15
AMENDMENT 2
1998-12-15
Information technology — Font information
interchange —
Part 1:
Architecture
AMENDMENT 2: Minor enhancements to the
architecture to address font technology
advances
Technologies de l'information — Échange d'informations sur les fontes —
Partie 1: Architecture
AMENDEMENT 2: Améliorations mineures de l'architecture pour traiter les
avances technologiques des fontes
Reference number
B C
ISO/IEC 9541-1:1991/Amd.2:1998(E)

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ISO/IEC 9541-1:1991/Amd.2:1998(E)
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.
Amendment 2 to ISO/IEC 9541-1:1991 was prepared by Joint Technical
Committee ISO/IEC JTC 1, Information technology.
©  ISO/IEC 1998
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced
or utilized in any form or by any means, electronic or mechanical, including photocopying and
microfilm, without permission in writing from the publisher.
ISO/IEC Copyright Office • Case postale 56 • CH-1211 Genève 20 • Switzerland
Printed in Switzerland
ii

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©
ISO/IEC ISO/IEC 9541-1:1991/Amd.2:1998(E)
Introduction
This minor enhancement specifies additional properties of the Font
Resource defined by ISO/IEC 9541-1:1991. The properties make it
possible to address advances in font technology and in the increasing
complexity of document processing. The properties of this Amendment
are optional and in addition to those defined in ISO/IEC 9541-1:1991,
with the interchange format being defined in Amendment 1 to
ISO/IEC 9541-2:1991.
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©
ISO/IEC ISO/IEC 9541-1:1991/Amd.2:1998(E)
Information technology — Font information
interchange —
Part 1: Architecture
Amendment 2: Minor enhancements to the
architecture to address font technology advances
Page 3
Clause 3
Add the following definitions:
3.28 body size: The font size, measured along the y axis of the glyph coodinate system.
3.29 extended body size: A reference size with two components, measured respectively along the x and
y axes of the glyph coordinate system.
3.30 design frame: Dimensional expression that specifies the area inside which a set of glyph images can
be designed.
3.31 bounding box: Dimensional expression to specify an actual area that a glyph image occupies within
a design frame.
3.32 blackness: The ratio of the blackened area of a glyph image to the extended body size area of the
glyph image.
Page 54
Clause 8
Add the following properties:
8.9 Properties
8.9.1 Vertical Units and Horizontal Units (VUNITS, HUNITS)
VUNITS and HUNITS are cardinals, the number of relative units equal to the extended body size of the
font resource, as measured along the y axis and x axis respectively of the glyph coordinate system.
 verticalunit-property ::= verticalunit-name, verticalunit-value
 verticalunit-name ::= STRUCTURED-NAME
           -- ISO/IEC 9541-1//VUNITS
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©
ISO/IEC
ISO/IEC 9541-1:1991/Amd.2:1998(E)
 verticalunit-value ::= CARDINAL
 horizontalunit-property ::= horizontalunit-name,
               horizontalunit-value
 horizontalunit-name ::= STRUCTURED-NAME
           -- ISO/IEC 9541-1//HUNITS
 horizontalunit-value ::= CARDINAL
NOTE 1 The property RELUNITS specifies body size as measured only along the y axis of the glyph
coordinate system. However, in some fonts, e.g., a certain Kanji font, dimensional references of their
extended body size have to be defined in both x axis and y axis.
NOTE 2 The typical value of VUNITS should be 1000, so as to harmonize with that of RELUNITS.
8.9.2 Fill Ratio (FILLRATIO)
FILLRATIO is a property-list, specifying a blackness of a glyph image of a reference glyph in the font
resource.
 fillratio-property ::= fillratio-name,
             fillratio-value-property-list
 fillratio-name ::=STRUCTURED-NAME
         -- ISO/IEC 9541-1//FILLRATIO
 fillratio-value-property-list ::= (blackness)+
 blackness ::= reference-glyph, fillratio-value
 reference-glyph ::= MESSAGE
         -- specification of a typical glyph
 fillratio-value ::= RATIONAL
         -- (blackened area)x1000 /(VUNITS x HUNITS)
NOTE 3 Fill Ratio is used to determine an appropriate font substitution.
NOTE 4 In Latin fonts, "I" or "i" is used as a reference glyph. In Japanese fonts, reference glyphs may be
" " or " ".
8.9.3 Design Areas (DSNAREAS)
DSNAREAS is a property-list consisting of the property-lists that specify the design frames within which
sets of glyph images are design
...