| 摘要 |
PURPOSE:To detect previously a reading error of concatenation information and to correct this error, by storing the concatenation information for each track in a reproduction time to define the data corresponding to the stored concentration information as a real data and selecting a reproduction track based on the real data. CONSTITUTION:In a reproduction time, the signal read out of a disk recording/ reproducing part 7 is supplied alternately to RAMs 11 and 12 via a changeover switch 10. The concatenation data among the data written in the RAMs 11 and 12 are supplied to registers 15-17 via a disk controller 8. Then the concatenation data of the present reproduction track is written to those registers together with the concatenation data of the preceding reproduction track and that two times ahead, respectively. The outputs of the registers 15-17 are sent to a coincidence detecting circuit 19, and coincidence is detected among three corresponding joint data. The concatenation data stored in a register 18 is fed to the controller 8. Based on this data, a correct selection (access) is secured for the track to be reproduced next. |
