信息技术 信息交换用3.81mm宽盒式磁带 螺旋扫描记录 DDS-4格式

[中文适用范围]： 该国际标准规定了 3.81 毫米宽盒式磁带的物理和磁性特性，以实现此类盒式磁带在驱动器之间的物理互换性。 它还指定了记录信号的质量、记录方法和记录格式 - 称为数字数据存储 4 (DDS-4) - 从而允许通过此类磁带盒在驱动器之间进行数据交换。 系统之间的信息交换还至少需要交换双方就交换代码以及交换盒上的信息的结构和标签的规格达成一致。 在信息交换情况下，在将处理算法（例如 ISO/IEC 11558 中指定的无损数据压缩）在记录到磁带上之前应用于主机数据，并在从磁带读取数据后应用补充的重新处理算法，还需要交换双方就这些内容达成一致。 [外文原描述]： This International Standard specifies the physical and magnetic characteristics of a 3,81 mm wide magnetic tape cartridge to enable physical interchangeability of such cartridges between drives. It also specifies the quality of the recorded signals, the recording method and the recorded format - called Digital Data Storage 4 (DDS-4) - thereby allowing data interchange between drives by means of such magnetic tape cartridges. Information interchange between systems also requires, at a minimum, agreement between the interchange parties upon the interchange code(s) and the specifications of the structure and labelling of the information on the interchanged cartridge. Under information interchange circumstances in which a processing algorithm, e.g. for lossless data compression as specified in ISO/IEC 11558, is applied to the host data prior to recording on the tape and a complementary reprocessing algorithm is applied after the data is read from the tape, agreement upon these by the interchange parties is also required.