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
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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.