信息技术.80mm(每面1.46Gbytes)和120mm(每面4.70Gbytes)DVD可刻录光盘(DVD-R

[中文适用范围]： 本国际标准规定了 80 毫米和 120 毫米 DVD 可刻录光盘的机械、物理和光学特性，以实现此类光盘的互换。 它规定了预记录、未记录和已记录信号的质量、数据格式、信息区格式、未记录区格式以及记录方法，从而允许通过此类盘进行信息交换。 该磁盘被识别为 DVD 可刻录 (DVD-R) 磁盘。 本国际标准规定了 - 80 毫米和 120 毫米公称直径的磁盘，可以是单面或双面的; ——符合条件; ——磁盘运行和存储的环境; ——磁盘的机械和物理特性。 磁盘，以便在数据处理系统之间提供机械交换， − 未记录磁盘上预记录信息的格式，包括磁道和扇区的物理配置、纠错码和所使用的编码方法， − 格式磁盘上数据和记录信息的特性，包括磁道和扇区的物理配置、纠错码和所使用的编码方法， − 来自磁盘上预记录和未记录区域的信号特征，使数据能够处理系统读取预先记录的信息并写入磁盘， − 磁盘上记录的信号特征，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 23912:2005 specifies the mechanical, physical and optical characteristics of an 80 mm and a 120 mm DVD Recordable disk to enable the interchange of such disks. It specifies the quality of the pre-recorded, unrecorded and the recorded signals, the format of the data, the format of the information zone, the format of the unrecorded zone, and the recording method, thereby allowing for information interchange by means of such disks. This disk is identified as a DVD Recordable (DVD-R) disk. ISO/IEC 23912:2005 specifies: - 80 mm and 120 mm nominal diameter disks that may be either single or double sided; - 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 pre-recorded information on an unrecorded disk, including the physical disposition of the tracks and sectors, the error correcting codes and the coding method used; - the format of the data and the recorded 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 from pre-recorded and unrecorded areas on the disk, enabling data processing systems to read the pre-recorded information and to write to the disks; and - the characteristics of the signals recorded on the disk, enabling data processing systems to read the data from the disk. ISO/IEC 23912:2005 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.