1、BSI Standards PublicationMultimedia systems and equipment Multimedia e-publishing and e-book technologies Printing specification of texture map for auditory presentation of printed textsBS EN 62875:2015National forewordThis British Standard is the UK implementation of EN 62875:2015. It isidentical t
2、o IEC 62875:2015.The UK participation in its preparation was entrusted to TechnicalCommittee EPL/100, Audio, video and multimedia systems and equipment.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all th
3、e necessary provisions ofa contract. Users are responsible for its correct application. The British Standards Institution 2015.Published by BSI Standards Limited 2015ISBN 978 0 580 84305 1ICS 33.160.01Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standa
4、rd was published under the authority of theStandards Policy and Strategy Committee on 30 June 2015.Amendments/corrigenda issued since publicationDate Text affectedBRITISH STANDARDBS EN 62875:2015EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 62875 May 2015 ICS 33.160 English Version Multimedia
5、 systems and equipment - Multimedia e-publishing and e-book technologies - Printing specification of texture map for auditory presentation of printed texts (IEC 62875:2015) Systmes et appareils multimdia - Technologies de Ldition lectronique multimdia et des livres lectroniques - Spcification dimpre
6、ssion de la carte de texture pour la prsentation auditive de textes imprims (IEC 62875:2015) Multimediasysteme und -gerte - Druckfestlegung der Textur-Abbildung fr die auditive Umsetzung von gedruckten Texte (IEC 62875:2015) This European Standard was approved by CENELEC on 2015-03-31. CENELEC membe
7、rs are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on applicatio
8、n to the CEN-CENELEC Management Centre or to any CENELEC member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC
9、Management Centre has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland
10、, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisch
11、es Komitee fr Elektrotechnische Normung CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2015 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members. Ref. No. EN 62875:2015 E BS EN 62875:2015EN 62875:2015 - 2 - Foreword The text of docu
12、ment 100/2292/CDV, future edition 1 of IEC 62875, prepared by IEC/TC 100, “Audio, video and multimedia systems and equipment“ was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as EN 62875:2015. The following dates are fixed: latest date by which the document has to be implemente
13、d at national level by publication of an identical national standard or by endorsement (dop) 2015-12-31 latest date by which the national standards conflicting with the document have to be withdrawn (dow) 2018-03-31 Attention is drawn to the possibility that some of the elements of this document may
14、 be the subject of patent rights. CENELEC and/or CEN shall not be held responsible for identifying any or all such patent rights. Endorsement notice The text of the International Standard IEC 62875:2015 was approved by CENELEC as a European Standard without any modification. BS EN 62875:2015- 3 - EN
15、 62875:2015 Annex ZA (normative) Normative references to international publications with their corresponding European publications The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the editi
16、on cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. NOTE 1 When an International Publication has been modified by common modifications, indicated by (mod), the relevant EN/HD applies. NOTE 2 Up-to-date information on the latest
17、versions of the European Standards listed in this annex is available here: www.cenelec.eu. Publication Year Title EN/HD Year IEC 62665 - Multimedia systems and equipment - Multimedia e-publishing and e-books technologies - Texture map for auditory presentation of printed texts EN 62665 - BS EN 62875
18、:2015 2 IEC 62875:2015 IEC 2015 CONTENTS FOREWORD . 3 1 Scope 5 2 Normative reference 5 3 Terms and definitions 5 4 Printing specification . 6 4.1 General . 6 4.2 Size of a texture map 6 4.3 Printing quality of a texture map 6 4.3.1 Printing quality . 6 4.3.2 Sampling line . 7 4.3.3 Quality measure
19、8 4.4 Location of a texture map 11 4.5 Location of a notch . 11 Annex A (informative) Examples of visible quality of a texture map 13 Annex B (informative) Creating process of printed matter including a texture map . 15 Figure 1 Sampling lines in case of size M texture map . 7 Figure 2 Reflectance p
20、attern of cells on scanning the sampling lines . 8 Figure 3 Length between end points of tick marks on a horizontal sampling line 9 Figure 4 Location of a texture map . 11 Figure 5 Location of a single notch 12 Figure 6 Location of double notches 12 Figure A.1 Texture map with high printing quality
21、. 13 Figure A.2 Texture map including low contrast cells and non-square cells 13 Figure A.3 Texture map with low sharpness . 14 Figure A.4 Texture map processed by non-preserving data compression . 14 Figure B.1 Creating process of printed matter including a texture map . 15 Table 1 Sizes of a textu
22、re map . 6 Table 2 Printing quality of a texture map 7 Table 3 Value of print contrast . 8 Table 4 Value of symmetry of cell pattern 9 Table 5 Value of squareness 9 Table 6 Value of size accuracy 10 Table 7 Value of tick mark identification . 10 Table 8 Value of quiet zone sufficiency 10 Table 9 Val
23、ue of uselessness of error correction 11 Table 10 Value of decodability . 11 BS EN 62875:2015IEC 62875:2015 IEC 2015 3 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ MULTIMEDIA SYSTEMS AND EQUIPMENT MULTIMEDIA E-PUBLISHING AND E-BOOK TECHNOLOGIES PRINTING SPECIFICATION OF TEXTURE MAP FOR AUDITORY PRESE
24、NTATION 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 IEC is to promote international co-operation on all questions concerni
25、ng 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 (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their p
26、reparation 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 with the IEC also participate in this preparation. IEC collaborates close
27、ly 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 nearly as possible, an international consensus of opinion on the relevan
28、t 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 that sense. While all reasonable efforts are made to ensure that the tec
29、hnical content of IEC Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any misinterpretation by any end user. 4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications transparently to the maximum ex
30、tent possible in their national and regional publications. Any divergence between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter. 5) IEC itself does not provide any attestation of conformity. Independent certification bodies provid
31、e 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 edition of this publication. 7) No liability shall attach to IEC or it
32、s 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, whether direct or indirect, or for costs (including legal fees) and expenses
33、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 indispensable for the correct application of this publication. 9) Attention
34、 is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent rights. IEC shall not be held responsible for identifying any or all such patent rights. International Standard IEC 62875 has been prepared by technical area 10: Multimedia e-publishing and e-
35、book technologies, of IEC technical committee 100: Audio, video and multimedia systems and equipment. The text of this standard is based on the following documents: CDV Report on voting 100/2292/CDV 100/2400/RVC Full information on the voting for the approval of this standard can be found in the rep
36、ort on voting indicated in the above table. This publication has been drafted in accordance with the ISO/IEC Directives, Part 2. BS EN 62875:2015 4 IEC 62875:2015 IEC 2015 The committee has decided that the contents of this publication will remain unchanged until the stability date indicated on the
37、IEC website 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 bilingual version of this publication may be issued at a later date. IMPORTANT The colour inside logo
38、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 using a colour printer. BS EN 62875:2015IEC 62875:2015 IEC 2015 5 MULTIMEDIA SYSTEMS AND EQUIPMENT MULT
39、IMEDIA E-PUBLISHING AND E-BOOK TECHNOLOGIES PRINTING SPECIFICATION OF TEXTURE MAP FOR AUDITORY PRESENTATION OF PRINTED TEXTS 1 Scope The texture map for auditory presentation of printed texts is printed on paper or shown on display devices. This International Standard specifies the printing quality
40、of this texture map on paper. In order to ensure an interoperability of the texture map specified in IEC 62665, a printing specification based on the quality of this International Standard should be employed. 2 Normative reference The following documents, in whole or in part, are normatively referen
41、ced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. IEC 62665, Multimedia systems and equipment Multimedia e-publishing and e-bo
42、oks technologies Texture map for auditory presentation of printed texts 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 texture map two dimensional cell patterns which include alignment lines and a data matrix SOURCE: IEC 62665, 2.1, modified
43、 Definition has been clarified. 3.2 data matrix two dimensional cell patterns generated from text data compression and error correction encoding 3.3 cell minimum square dot which constitutes a data matrix 3.4 alignment line border line which encloses a texture map Note 1 to entry: An alignment line
44、consists of solid lines and tick marks. The solid lines have a cells width and may partially be interrupted. Note 2 to entry: For additional information on alignment lines, see IEC 62665. BS EN 62875:2015 6 IEC 62875:2015 IEC 2015 3.5 tick mark positioning mark which intersects perpendicularly with
45、the solid lines and is given at equal intervals on the solid lines of an alignment line Note 1 to entry: A tick mark indicates the unit boundary and has a cells width. 3.6 quiet zone non-printing area outside of a texture map 3.7 unit square area which consists of 11 11 cells in a texture map 4 Prin
46、ting specification 4.1 General Texture maps generated by a system are specified by IEC 62665 and a printing quality of the texture maps has to be standardized to ensure interoperability of the printed texture maps. Texture maps should be printed on paper with a resolution of 600 dpi (dots per inch,
47、23,622 dot/mm). In order to minimize specular reflection, a mat coated paper or a low reflection paper should be used. 4.2 Size of a texture map Four sizes of a texture map are specified by IEC 62665 and they have their dimensions shown in Table 1. Table 1 Sizes of a texture map Size Number of cells
48、 Number of units Dimensions at printing mm XS 40 40 3 3 6,8 6,8 S 73 73 6 6 12,4 12,4 M 106 106 9 9 17,9 17,9 L 117 117 10 10 19,8 19,8 4.3 Printing quality of a texture map 4.3.1 Printing quality Printing quality of a texture map is defined by the average Q of values of the following quality measur
49、es and indicated with the symbol A, B, C, D or F, as shown in Table 2. The following aspects define the printing quality: a) print contrast; b) symmetry of cell pattern; c) squareness; d) size accuracy, e) tick mark identification; f) quiet zone sufficiency; BS EN 62875:2015IEC 62875:2015 IEC 2015 7 g) uselessness of error correction, and h) decodability. Table 2 Printing quality of a texture map Q (av
