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详细说明： MPEG-1标准的系统部分 CONTENTS CONTENTS................................................................................................................................................2 FOREWORD...............................................................................................................................................4 INTRODUCTION - PART 1: SYSTEMS ...................................................................................................5 I.1 Multiplex-wide Operations (Pack layer) ............................. .............................................6 I.2 Individual Stream Operations (Packet Layer) ..................................................................6 I.2.1 Demultiplexing ..................................................................................................6 I.2.2 Synchronization .................................................................................................6 I.2.3 Relation to Compression Layer..........................................................................7 I.3 System Reference Decoder ..............................................................................................7 1 GENERAL NORMATIVE ELEMENTS.......................................................................................8 1.1 Scope...............................................................................................................................8 1.2 References.......................................................................................................................8 2 TECHNICAL NORMATIVE ELEMENTS...................................................................................9 2.1 Definitions.......................................................................................................................9 2.2 Symbols and Abbreviations ...........................................................................................16 2.2.1 Arithmetic Operators .......................................................................................16 2.2.2 Logical Operators ............................................................................................16 2.2.3 Relational Operators ........................................................................................17 2.2.4 Bitwise Operators ............................................................................................17 2.2.5 Assignment ......................................................................................................17 2.2.6 Mnemonics ......................................................................................................17 2.2.7 Constants .........................................................................................................18 2.3 Method of Describing Bit Stream Syntax ......................................................................18 2.4 Requirements .................................................................................................................20 2.4.1 Coding Structure and Parameters.....................................................................20 2.4.2 System Target Decoder....................................................................................20 2.4.3 Specification of the System Stream Syntax......................................................24 2.4.4 Semantic Definition of Fields in Syntax ..........................................................27 2.4.5 Restrictions on the Multiplexed Stream Semantics..........................................32 2.4.6 Constrained System Parameter Stream............................................................33 1-ANNEX A (informative) ......................................................................................................................A-1 1-A.1 Overview......................................................................................................................A-1 1-A.2 Encoder Operations......................................................................................................A-1 1-A.2.1 Degrees of freedom........................................................................................A-1 1-A.2.2 Synchronization .............................................................................................A-2 1-A.2.3 Multiplexing ..................................................................................................A-3 1-A.2.4 Encoder Constraints caused by Decoder Buffering .......................................A-4 1-A.2.5 Stream Characterization.................................................................................A-5 1-A.2.6 Padding Stream..............................................................................................A-5 1-A.2.7 Insertion of Private Data................................................................................A-5 1-A.3 Decoder Operations ....................................................................................................A-5 1-A.3.1 Decoder synchronization ...............................................................................A-6 3 ...展开收缩
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