1、 IEC 62842 Edition 1.0 2015-09 INTERNA TIONAL STA NDA RD Multimedia home serv er systems File allocation system with minimized reallocation IEC 62842:2015-09(en)Copyright International Electrotechnical Commission THIS PUBLICA TION IS COPYRIGHT PROTECTED Copyright 2015 IEC,Geneva,Switzerland All righ
2、ts reserved.Unless otherwise specified,no par t of this publication may be reproduced or utilized in any for m or by any means,electronic or mechanical,including photocopying and microfilm,without per mission in writing fr om either IEC or IECs member National Committee in the country of the request
3、er.If you have any questions about IEC copyright or have an enquiry about obtaining additional r ights to this publication,please contact the address below or your local IEC member National Committee for further infor mation.IEC Centr al Office Tel.:+41 22 919 02 11 3,rue de Varemb Fax:+41 22 919 03
4、 00 CH-1211 Geneva 20 infoiec.ch Switzerland www.iec.ch About t he IEC The International Electr otechnical Commission(IEC)is the leading global organization that prepar es and publishes Inter national Standards for all electr ical,electronic and related technologies.A bout IEC publications The techn
5、ical content of IEC publications is kept under constant review by the IEC.Please make sur e that you have the latest edition,a cor rigenda or an amendment might have been published.IEC Cat alogue-webstore.iec.ch/cat alogue The stand-alone application for consulting the entire bibliographical informa
6、tion on IEC International Standards,Technical Specifications,Technical R eports and other documents.A v ailable for PC,Mac OS,A ndroid Tablets and iPad.IEC publications search-w w w.iec.ch/searchpub The adv anced search enables to find IEC publications by a variety of criteria(reference number,text,
7、technical committee,).It also gives information on projec ts,replaced and withdrawn publications.IEC Just Published-webstore.iec.ch/justpublished Stay up to date on all new IEC publications.Just Published details all new publications released.A v ailable online and also once a month by email.Elect r
8、opedia-w w w.elect ropedia.org The worlds leading online dic tionary of elec tronic and electrical terms containing more than 30 000 terms and definitions in English and French,with equiv alent terms in 15 additional languages.Also known as the International Elec trotechnical Vocabulary (IEV)online.
9、IEC Glossar y-st d.iec.ch/glossary More than 60 000 electrotechnical terminology entries in English and French extracted from the Terms and Definitions clause of IEC publications issued since 2002.Some entries hav e been collected from earlier publications of IEC TC 37,77,86 and CISPR.IEC Customer S
10、ervice Cent re-webstore.iec.ch/csc If y ou wish to giv e us y our feedback on this publication or need further assistance,please contact the Customer Serv ice Centre:csciec.ch.Copyright International Electrotechnical Commission IEC 62842 Edit ion 1.0 2015-09 INTER NA TIONAL STA NDA R D Multimedia ho
11、me serv er systems File allocation sy stem with minimized reallocation INTERNATIONAL ELECTROTECHNICAL COMMISSION ICS 33.160.60 ISBN 978-2-8322-2843-2 R egist er ed tr ademar k of t he Int er national Electr ot echnical Commission Warning!Make sure that you obtained this publication from an authorize
12、d distributor.Copyright International Electrotechnical Commission 2 IEC 62842:2015 IEC 2015 CONTENTS FOREWORD.4 INTRODUCTION.6 1 Scope.7 2 Normative references.7 3 Terms,definitions,abbreviations and notation.7 3.1 Terms and definitions.7 3.2 Abbreviations.11 3.3 Notation.11 4 Precondition and the p
13、olicy.11 4.1 Preconditions.11 4.2 Policy.12 5 Method to be applied-CoPo2.12 6 Explanation of basic method CoPo2.14 6.1 Basics.14 6.2 Two choices to apply CoPo2 to an existing partition scheme.14 6.2.1 General.14 6.2.2 Applying to an existing partition.14 6.2.3 Applying to a virtual container partiti
14、on.15 6.2.4 Choice conclusion.16 6.3 Management tables for CoPo2.16 6.3.1 General.16 6.3.2 Region configuration master partition table.18 6.3.3 Multilevel-divided-partition management tables.18 6.4 Functions required to implement CoPo2.18 6.4.1 General.18 6.4.2 Initialize.18 6.4.3 Manage-multilevel-
15、divided-partitions.18 7 Considerations on the size of management tables.19 7.1 General.19 7.2 Multilevel-divided-partition allocation table size.19 7.2.1 Blu-ray.19 7.2.2 HDD.19 8 Applying CoPo2 to UDF.19 8.1 Storage media to be applied.19 8.2 Basics when UDF volume format is applied to HDD.20 8.3 B
16、asics to apply management tables to UDF.20 8.3.1 Master divided-partition table.20 8.3.2 Using the implementation use field of the partition descriptor.20 8.3.3 Multilevel-divided-partition allocation table.21 9 Data structures applied to UDF.21 9.1 General.21 9.1.1 Entity identifier.21 9.1.2 IdentifierSuffix.21 9.2 Volume structure.21 9.2.1 Logical volume descriptor.21 Copyright International Electrotechnical Commission IEC 62842:2015 IEC 2015 3 9.2.2 Logical volume integrity descriptor.22 9.2.
