Section 1 - General 1 Scope This International Standard specifies the mechanical, physical and optic Rewritable Disk (DVD-RAM), to enable interchange of such disks. It speci data and the recording method, thereby allowing for information interchange by means of such disks. The data can be written, read and ov Types are specified that differ only by their diameter of 120 mm and 80 This International Standard specifies - two related but different - the conditions for conformance, - the environments in which the disk is to be tested, operated and - the mechanical, physical and dimensional characteristics of the between data processing systems, - the format of the information on the disk, including the physica error correcting codes and the coding method, - the characteristics of the signals recorded on the disk, thus en from the disk. This International Standard provides for the interchange of disks betwee and file structure, it provides for full data interchange between data p International Standard may be enclosed in cases according to ISO/IEC 175 specified therein.