ISO/IEC INTERNATIONAL STANDARD 16824 First edition 1999-05-15 Information technology 120 mm DVD rewritable disk (DVD-RAM) Technologies de I'information - Disque a reécriture DvD de diametre 120 mm (DVD-RAM) IEC Reference number ISO/IEC 16824:1999(E) ISO/IEC 16824:1999 (E) Contents Page Section 1 - General 1 1 Scope 1 2 Conformance 1 2.1 Optical Disk 1 2.2 Generating system 1 2.3 Receiving system 1 3 Normative references 1 4 Definitions 1 4.1 Case 1 4.2 Channel bit 2 4.3 Digital Sum Value (DSV) 2 4.4 Disk Reference Plane 2 4.5 Dummy substrate 2 4.6 Embossed mark 2 4.7 Entrance surface 2 4.8 Land and Groove 2 4.9 Mark 2 4.10 Phase change 2 4.11 Polarization 2 4.12 Recording layer 2 4.13 Sector 2 4.14 Space 2 4.15 Substrate 2 4.16 Track 2 4.17 Track pitch 2 4.18 ZCLV 2 4.19 Zone 2 5 Conventions and notations 2 5.1 Representation of numbers 2 5.2 Names 3 6 List of acronyms 3 7 General description of the optical disk 3 8 General requirements 4 8.1 Environments 4 8.1.1 Test environment 4 @ISO/IEC1999 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from the publisher. ISO/IEC Copyright Office · Case postale 56 . CH-1211 Geneve 20 · Switzerland Printed in Switzerland @ ISO/IEC ISO/IEC 16824:1999 (E) 8.1.2 Operating environment 4 8.1.3 Storage environment 5 8.1.4 Transportation 5 8.2 Safety requirement 5 8.3 Flammability 5 9 Reference Drive 5 9.1 Optical Head 5 9.2 Read channels 6 9.3 Rotation speed 6 9.4 Disk clamping 7 9.5 Normalized servo transfer function 7 9.6 Reference Servo for axial tracking 7 9.7 Reference Servo for radial tracking 8 Section 2 - Dimensional, mechanical and physical characteristics of the disk 9 10 Dimensional characteristics 9 10.1 Overall dimensions 10 10.2 First transition area 11 10.3 Second transition area 11 10.4 Clamping Zone 11 10.5 Third transition area 11 10.6 Rim area 12 10.7 Remark on tolerances 12 10.8 Label 12 11 Mechanical characteristics 12 11.1 Mass 12 11.2 Moment of inertia 12 11.3 Dynamic imbalance 12 11.4 Sense of rotation 12 11.5 Runout 12 11.5.1 Axial runout 12 11.5.2 Radial runout 12 12 Optical characteristics 13 12.1 Index of refraction 13 12.2 Thickness of the transparent substrate 13 12.3 Angular deviation 13 12.4 Birefringence of the transparent substrate 13 12.5 Reflectivity 13 Section 3 - Format of information 14 13 Data format 14 13.1 Data Frames 14 13.1.1 Data ID 15 13.1.2 Data ID Error Detection code (IED) 16 13.1.3 Reserved bytes 16 13.1.4 Error Detection Code (EDC) 16 13.2 Scrambled Frames 17 13.3 ECC Blocks 17 13.4 Recording Frames 19 13.5 Recording code and NRZI conversion 20 ii @ ISO/IEC ISO/IEC 16824:1999 (E) 13.6 Recorded Data Field 21 13.7 DC component suppress Control (DCC) 22 13.7.1 DCC for the data in the Rewritable Area 22 13.7.2 DCC for the data in the Embossed Area 22 13.7.3 PID and PED recording 23 14 Track format 23 14.1 Track shape 23 14.2 Track path 24 14.3 Track pitch 24 14.4 Track layout 24 14.5 Rotation speed 24 14.6 Radial alignment 25 14.7 Sector number 25 15 Sector format 26 15.1 Sector layout 26 15.1.1 Sector layout in the Rewritable Area 26 15.1.2 Sector layout in the Embossed Area 26 15.2 VFO fields 27 15.3 Address Mark (AM) 28 15.4 Physical ID (PID) fields 28 15.5PIDErrorDetection code(PED)fields 29 15.6Postamble1andPostamble2(PA1,PA2)fields 29 15.7 Mirror field 31 15.8 Gap field 31 15.9 Guard 1 field 31 15.10 Pre-Synchronous code (PS) field 31 15.11 Data field 31 15.12 Postamble 3 (PA 3) field 31 15.13 Guard 2 field 31 15.14 Recording polarity randomization 31 15.15 Buffer field 32 16 Format of the Information Zone 32 16.1 Division of the Information Zone 32 16.2Lead-in Zone 34 16.2.1 Structure of Lead-in Zone 34 16.2.2 Initial Zone 34 16.2.3 Reference Code Zone 34 16.2.4 Buffer Zone 1 34 16.2.5 Buffer Zone 2 35 16.2.6 Control Data Zone 35 16.2.7 Connection