标准摘要
[中文适用范围]： 本文件规定了容量为25,0 Gbytes或50,0 Gbytes的120 mm可重写光学盘的机械、物理和光学特性。它规定了记录信号和未记录信号的质量、数据格式以及记录方法，从而允许通过此类光盘进行信息交换。使用可逆方法可以多次对用户数据进行写入、读取和覆盖。这种光盘被标识为BD可重写光盘。本文件规定了以下内容：——两种相关但不同的光盘类型；——符合性的条件；——光盘的运行和存储环境；——光盘的机械和物理特性，允许数据处理系统之间的机械互换；——磁盘上信息的格式，包括轨道和扇区的物理分布；——使用的纠错码和编码方法；——记录在磁盘上的信号特性，使数据处理系统能够从磁盘读取数据。本文件规定了驱动器之间光盘的互换性。结合卷和文件结构的标准，它为数据处理系统之间的完整数据交换提供了保障。 [外文原描述]： This document specifies the mechanical, physical and optical characteristics of a 120 mm rewritable optical disk with a capacity of 25,0 Gbytes or 50,0 Gbytes. It specifies the quality of the recorded and unrecorded signals, the format of the data and the recording method, thereby allowing for information interchange by means of such disks. User data can be written, read and overwritten many times using a reversible method. This disk is identified as a BD rewritable disk. This document specifies the following: — two related but different types of this disk; — conditions for conformance; — environments in which the disk is to be operated and stored; — mechanical and physical characteristics of the disk, which allow mechanical interchange between data processing systems; — format of the information on the disk, including the physical disposition of the tracks and sectors; — error-correcting codes and coding method used; — characteristics of the signals recorded on the disk, which enable data processing systems to read data from the disk. This document provides for interchange of disks between drives. Together with a standard for volume and file structure, it provides for full data interchange between data processing systems.
英文名称Information technology - Digitally recorded media for information interchange and storage - 120 mm Single Layer (25,0 Gbytes per disk) and Dual Layer (50,0 Gbytes per disk) BD Rewritable disk