1、 IEC 62665 Edition 2.0 2015-12 INTERNATIONAL STANDARD Multimedia systems and equipment Multimedia e-publishing and e-book technologies Texture map for auditory presentation of printed texts IEC 62665:2015-12(en) colour inside THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2015 IEC, Geneva, Switze
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11、e-publishing and e-book technologies Texture map for auditory presentation of printed texts INTERNATIONAL ELECTROTECHNICAL COMMISSION ICS 33.160.60; 35.240.20; 35.240.30 ISBN 978-2-8322-3043-5 Registered trademark of the International Electrotechnical Commission Warning! Make sure that you obtained
12、this publication from an authorized distributor. colour inside 2 IEC 62665:2015 IEC 2015 CONTENTS FOREWORD . 4 INTRODUCTION . 6 1 Scope 7 2 Terms and definitions 7 3 Texture map 7 3.1 Names of elements . 7 3.2 Size and data volume 9 3.3 Encoding scheme of a texture map from texts . 9 3.3.1 General .
13、 9 3.3.2 Processing by SpeechioEncode function 11 3.3.3 Processing by SpeechioSymbol function 12 3.4 Decoding scheme of a texture map to texts . 13 3.5 Example of use of the functions 15 4 Printing of texture map image 16 4.1 General . 16 4.2 Size of image 16 4.3 Position of the texture map and marg
14、in on paper 16 Annex A (informative) Input processing (Japanese texts) . 19 A.1 General . 19 A.2 Removal of control codes for text 19 A.3 Specification of particular pronunciation of Kanji . 19 A.4 Specification of voice properties . 19 Annex B (informative) Input processing (English texts) 22 Annex
15、 C (informative) Notch, auditory presentation equipment, and etc. 23 C.1 Notch to designate a texture map position. 23 C.2 Printing paper . 23 C.3 Printing and printer . 23 C.4 Copy . 24 C.5 Extension to a texture map . 24 C.6 Examples of auditory presentation equipment . 25 Annex D (informative) Ex
16、ample of Reed Solomon error correction encoding using Galois field GF(2048) . 27 Bibliography 42 Figure 1 Shape and elements of a texture map 8 Figure 2 Process of generating texture map from texts 10 Figure 3 Process of text-decoding from texture map 14 Figure 4 Positioning of texture map and margi
17、n in paper 17 Figure 5 Example of texture map arrangement . 18 Figure C.1 Notch to designate a texture map position 23 Figure C.2 A texture map with broken alignment lines on two sides . 24 Figure C.3 A texture map with broken alignment lines on four sides . 24 Figure C.4 An example of auditory pres
18、entation equipment: Speechio TM . 25 Figure C.5 Another example of auditory presentation equipment: Speechio Plus TM 26 IEC 62665:2015 IEC 2015 3 Table 1 Sizes and data volume of texture maps . 9 Table 2 Size of printed texture map 16 Table A.1 Control codes for speech . 20 Table A.2 Characters (cha
19、racter strings) for identifying the end of a sentence . 21 Table B.1 Characters (character strings) for identifying the end of a sentence . 22 Table B.2 Abbreviation or acronym with “.“. 22 4 IEC 62665:2015 IEC 2015 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ MULTIMEDIA SYSTEMS AND EQUIPMENT MULTIME
20、DIA E-PUBLISHING AND E-BOOK TECHNOLOGIES TEXTURE MAP FOR AUDITORY PRESENTATION OF PRINTED TEXTS FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC National Committees). The object of
21、 IEC is to promote international co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports, Publicly Available Specifications (P
22、AS) and Guides (hereafter referred to as “IEC Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with may participate in this preparatory work. International, governmental and non-governmental organizations liaising wi
23、th the IEC also participate in this preparation. IEC collaborates closely with the International Organization for Standardization (ISO) in accordance with conditions determined by agreement between the two organizations. 2) The formal decisions or agreements of IEC on technical matters express, as n
24、early as possible, an international consensus of opinion on the relevant subjects since each technical committee has representation from all interested IEC National Committees. 3) IEC Publications have the form of recommendations for international use and are accepted by IEC National Committees in t
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27、 any attestation of conformity. Independent certification bodies provide conformity assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any services carried out by independent certification bodies. 6) All users should ensure that they have the latest
28、 edition of this publication. 7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and members of its technical committees and IEC National Committees for any personal injury, property damage or other damage of any nature whatsoever, whethe
29、r direct or indirect, or for costs (including legal fees) and expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC Publications. 8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is indi
30、spensable for the correct application of this publication. International Standard IEC 62665 has been prepared by technical area 10: Multimedia e-publishing and e-book technologies, of IEC technical committee 100: Audio, video and multimedia systems and equipment. This second edition cancels and repl
31、aces the first edition published in 2012 and constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition. a) Two different control codes are described by the different terms: “control codes for text“ and “control codes for
32、speech“. b) Pack processing and LZSS processing are shown in their additional subclauses. c) An example of the header file “Speechio.h“ is added. d) An example of error correction encoding is shown in additional Annex D. IEC 62665:2015 IEC 2015 5 The text of this standard is based on the following d
33、ocuments: CDV Report on voting 100/2431/CDV 100/2507/RVC Full information on the voting for the approval of this standard can be found in the report on voting indicated in the above table. This publication has been drafted in accordance with the ISO/IEC Directives, Part 2. The committee has decided
34、that the contents of this publication will remain unchanged until the stability date indicated on the IEC web site under “http:/webstore.iec.ch“ in the data related to the specific publication. At this date, the publication will be reconfirmed, withdrawn, replaced by a revised edition, or amended. A
35、 bilingual version of this publication may be issued at a later date. IMPORTANT The colour inside logo on the cover page of this publication indicates that it contains colours which are considered to be useful for the correct understanding of its contents. Users should therefore print this document
36、using a colour printer. 6 IEC 62665:2015 IEC 2015 INTRODUCTION Information interchange via printed documents between blind or visually impaired people has been carried out by using Braille. However, in order to be able to read Braille, particular tuition is required. Learning Braille is very difficu
37、lt for aged as well as visually non-impaired people. Printed documents with texts and text-encoded texture maps can be interchanged by ordinary circulation or publication mechanisms. They are readable as ordinary printed materials and comprehensible by blind or visually impaired people with the supp
38、ort of decoding and auditory presentation equipment. Today, interchanging of printed documents has become wide-spread and international. The text-encoding scheme to generate a texture map should therefore be standardized at an international level. Patent The International Electrotechnical Commission
39、 (IEC) draws attention to the fact that it is claimed that compliance with this document may involve the use of patents as listed below: PATENT No. 3499220 (Japan) PATENT No. 4439756 (Japan) PATENT No. 4744745 (Japan) PATENT No. 4772631 (Japan) IEC takes no position concerning the evidence, validity
40、 and scope of these patent rights. The holder of these patent rights has assured the IEC that he/she is willing to negotiate licences either free of charge or under reasonable and non-discriminatory terms and conditions with applicants throughout the world. In this respect, the statement of the hold
41、er of these patent rights is registered with IEC. Information may be obtained from: Original Design Inc. 4-16-2 Ikebukuro, Toshima-ku Tokyo 171-0014 Japan Kosaido Co., Ltd. 4-6-12 Shiba, Minato-ku Tokyo 108-8378 Japan Attention is drawn to the possibility that some of the elements of this document m
42、ay be the subject of patent rights other than those identified above. IEC shall not be held responsible for identifying any or all such patent rights. ISO (www.iso.org/patents) and IEC (http:/patents.iec.ch) maintain on-line data bases of patents relevant to their standards. Users are encouraged to
43、consult the data bases for the most up to data information concerning patents. IEC 62665:2015 IEC 2015 7 MULTIMEDIA SYSTEMS AND EQUIPMENT MULTIMEDIA E-PUBLISHING AND E-BOOK TECHNOLOGIES TEXTURE MAP FOR AUDITORY PRESENTATION OF PRINTED TEXTS 1 Scope In order to generate a texture map for auditory pre
44、sentation of printed text information, this International Standard specifies a text encoding scheme to generate a texture map, a physical shape and dimension of the texture map for printing, additional features for texture map printing, texture map decoding and an auditory presentation of decoded te
45、xts. These specifications enable the interchange of documents and publications between visually impaired and non-impaired people. 2 Terms and definitions For the purposes of this document, the following terms and definitions apply. 2.1 texture map two dimensional cell patterns which include alignmen
46、t lines and a data matrix which is generated from text data compression and error correction encoding 2.2 auditory presentation equipment equipment including an engine to carry out a text-to-speech 3 Texture map 3.1 Names of elements A shape and names of a texture map are indicated in Figure 1. The
47、shape represents the M size in Table 1. 8 IEC 62665:2015 IEC 2015 Figure 1 Shape and elements of a texture map IEC Cell: The minimum square element which constitutes a texture map (square dot shown in the red circle) Unit: Square area which consists of 11 11 cells in a texture map Data matrix: Two d
48、imensional cell patterns generated from encoded text data Alignment line: A border line which encloses a texture map. An alignment line consists of solid lines and tick marks. The solid lines have a cells width and may partially be interrupted IEC 62665:2015 IEC 2015 9 3.2 Size and data volume Textu
49、re maps have four sizes: XS, S, M and L. The corresponding data volumes are shown in Table 1. Table 1 Sizes and data volume of texture maps Size Number of cells Number of units Dimensions at printing mm Error correction level Data volume (Double byte characters) XS 40 40 3 3 6,8 6,8 strong 41 medium 48 weak 51 S 73 73 6 6 12,4 12,4 strong 250 medium 298 weak 329 M 106 106 9 9 17,9 17,9 strong 651 medium 768 weak 840 L 117 117 10
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