Patent ID: 6169710
Filing Date: 2001-01-02
Classification: G11B

Abstract:
A data recording/reproducing method for recording/reproducing a data to/from an optical disc using an optical disc recording/reproducing apparatus comprising: an optical head block for recording and reading a data to/from the optical disc; a tracking block for positioning the optical head on a predetermined track of the optical disc; a control block for controlling operation of the optical head block and the tracking block according to an instruction from an upper-node apparatus; and a memory for temporarily recording a data required for control, the method comprising steps of: monitoring a read out error during a data read by the optical head block from an address X of the optical disc; executing a read out retry by the optical head from the address X and each time retry is performed, storing the retry count in the memory; when the read out from the address X is successful, reading out the retry count from the memory so as to be compared to a predetermined value; if the retry count exceeds the predetermined value, allocating an alternative address Y on the optical disc to replace the address X, and copying the data which has been read out from the address X, onto address Y, and rewriting a defect management area (DMA) of the optical disc so that a data is read out from the address Y when an instruction is received from an upper node apparatus for reading out from the address X.