信息技术.80 mm DVD.只读光盘

[中文适用范围]： 本国际标准规定了 80 毫米只读光盘的机械、物理和光学特性，以实现此类光盘的互换。 它规定了记录信号的质量、数据格式和记录方法，从而允许通过此类磁盘进行信息交换。 该磁盘被识别为 DVD - 只读磁盘。 本国际标准规定了 - 该磁盘的四种相关但不同的类型（参见第 7 条）; ——一致性条件; ——磁盘运行和存储的环境; ——磁盘的机械和物理特性，用于在数据处理系统之间提供机械交换; ——磁盘上信息的格式，包括磁道和扇区的物理配置、纠错码和所使用的编码方法; ——磁盘上记录的信号的特性，使数据处理系统能够从磁盘读取数据。 该国际标准规定了磁盘驱动器之间的磁盘交换。 它与卷和文件结构标准一起提供了数据处理系统之间的完整数据交换。 [外文原描述]： ISO/IEC 16449 specifies the mechanical, physical and optical characteristics of a 80 mm, read-only optical disk to enable the interchange of such disks. It specifies the quality of the recorded signals, the format of the data and the recording method, thereby allowing for information interchange by means of such disks. This disk is identified as DVD - Read-Only Disk. ISO/IEC 16449 specifies four related but different Types of this disk,the conditions for conformance,the environments in which the disk is to be operated and stored,the mechanical and physical characteristics of the disk, so as to provide mechanical interchange between data processing systems,the format of the information on the disk, including the physical disposition of the tracks and sectors, the error correcting codes and the coding method used,the characteristics of the signals recorded on the disk, enabling data processing systems to read the data from the disk. ISO/IEC 16449 provides for interchange of disks between disk drives. Together with a standard for volume and file structure, it provides for full data interchange between data processing systems.