RECORDING DEVICE, READING DEVICE, RECORDING METHOD, RECORDING PROGRAM, READING METHOD, READING PROGRAM, AND MAGNETIC TAPE

• Main Authors: MIYAMOTO KENTARO, KONDO MICHITAKA, OZAWA EIKI, SANO NAOKI
• Format: Patent
• Language: Chinese; English
• Published: 12.10.2021
• Subjects: INFORMATION STORAGE; INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER; PHYSICS

The information processing device comprises a recording unit recording onto a magnetic recording medium a plurality of objects containing data and metadata related to the data, and after recording at least one object, executing processing whereby first grouped data, which is a grouping of the metadata contained in each of the objects, is recorded. The first grouped data is a grouping of the metadata contained in objects recorded after a completed recording of an immediately preceding first grouped data. The magnetic recording medium has a magnetic layer including a ferromagnetic powder and a binder on a nonmagnetic support. Measured by optical interferometry on the magnetic layer surface after washing with n-hexane and under pressure forces of 0.5 atm and 13.5 atm, the difference between the spacings S0.5 and S13.5 is 3.0 nm or less. 信息处理装置具备记录部，所述记录部执行如下处理，即，将包含数据及与数据有关的元数据的多个目标记录于磁记录介质，并且在记录了至少1个目标之后，记录目标中所包含的元数据的集合即第1集合数据。第1集合数据为在记录之前刚刚记录完成的第1集合数据之后所记录的目标中所包含的元数据的集合。磁记录介质在非磁性支撑体上具有包含强磁性粉末及粘结剂的磁性层，在磁性层的表面上进