| 摘要 |
PURPOSE:To ensure a highly efficient use of a buffer, by deciding no skew error although the tracks equivalent to the correctable ones do not exist within the buffer and when a deskew buffer of a quick track is filled with data. CONSTITUTION:If the track data is filled in a deskew buffer, a deskew buffer data reading logical circuit 9 knows this state by an output 20 of an OR circuit 7 of a data full signal 17. In case when the tracks equivalent to those that can be corrected by an error correcting circuit do not exist within a buffer 11, the tracks are decided as the dead ones by a data full track dead signal 13 and a dead track circuit 12. The corresponding data full signal 171 and a data-in signal 181 are prevented by gates 21 and 41, and the information on the dead track is excluded from the circuit 9. |
