| 摘要 |
PURPOSE:To execute more exactly a data transfer by reading a serial data at every block from a data of the first half part, storing a block number whose read has been impossible, and reading this data from a data group of the latter half part. CONSTITUTION:The same data is written and stored in two parts in a storage medium, therefore, even in case a part of the storage medium is damaged or the like and reading of a data becomes impossible, reading of a serial data can be executed almost exactly. Also, it scarcely occurs that a part in which reading of the serial data is impossible becomes the same place in both the first half part data and the latter half part data, therefore, the possibility that the serial data can be read exactly is good. In this way, a data transfer by an off-line system can be executed more exactly. |
