信息技术.90 mm盒式光盘上的数据交换.容量:每盒1.3 Gbytes

[中文适用范围]： 该国际标准定义了 90 毫米光盘盒 (ODC) 的特性，每个盒容量为 1.3 GB。 它仅指定此类磁带的 2 048 字节扇区的 R/W 类型。 R/W 型利用热磁和磁光效应在磁盘的整个记录表面上多次写入、读取和擦除数据。 它也被称为“完全可重写”。 该国际标准仅规定 2 048 字节扇区。 磁盘上的所有扇区的大小相同。 本国际标准规定： − 一致性测试和参考驱动器的条件； − 墨盒的运行和储存环境； − 卡盒的机械和物理特性，以便提供数据处理系统之间的机械互换能力； − 磁盘上信息的格式，包括压印的和用户写入的；包括磁道和扇区的物理配置、纠错码以及所使用的调制方法； − 盘上压印信息的特征； − 磁盘的磁光特性，使处理系统能够将数据写入磁盘； − 用户在磁盘上写入数据的最低质量，使数据处理系统能够从磁盘读取数据。 该国际标准规定了光盘驱动器之间的互换。 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 17346:2005 defines the characteristics of 90 mm Optical Disk Cartridges (ODC) with a capacity of 1,3 GB per cartridge. It specifies only Type R/W for 2 048-byte sectors of such cartridges. Type R/W provides for data to be written, read and erased many times over the entire recording surface of the disk using the thermo-magnetic and magneto-optical effects. It is also referred to as "fully rewritable". ISO/IEC 17346:2004 provides for 2 048-byte sectors only. All sectors on a disk are of the same size. ISO/IEC 17346:2005 specifies: the conditions for conformance testing and the Reference Drive;the environments in which the cartridges are to be operated and stored;the mechanical and physical characteristics of the cartridge, so as to provide mechanical interchange ability between data processing systems;the format of the information on the disk, both embossed and user-written; including the physical disposition of the tracks and sectors, the error correction codes, and the modulation method used;the characteristics of the embossed information on the disk;the magneto-optical characteristics of the disk, enabling processing systems to write data onto the disk;the minimum quality of user-written data on the disk, enabling data processing systems to read data from the disk. ISO/IEC 17346:2005 provides for interchange between optical disk drives. Together with a standard for volume and file structure, it provides for full data interchange between data processing systems.