| 摘要 |
PURPOSE:To detect the defective state of storage media for disc data easily and to improve preliminary maintenance capacity by providing means for storing pseudo times of read errors and pseudo times of data access in track units. CONSTITUTION:An adapter 1 of a storage device for disc data is connected to a data control device by means of a data path 3 and a command path 4. A logic part 14 for receiving commands receives the command code for setting storage addresses and a command decoder 12 supplies the data that the data control device puts on the path 3 as data storage address into a memory 11. Also, the decoder receives the command code for setting the stored data and stores the contents of the data stored in a data register 18 in the memory 11. The decoder receives the command code for taking in of the stored data, reads out the stored data of the memory 11 and stores the same in the register 18. In succession, the decoder 12 acts so as to transfer the contents of the data in the register 18 into a buffer logic part 13 for transmission and reception of data by taking a timing, and to put the same on the path 3. Thus, the data control device stores and reads out optional data. |
