Data recording/reproducing method and device

A data recording and/or reproducing method in which tracks of respective discs of a disc drive having plural discs are divided into plural blocks, and wherein spare sectors each containing a predetermined number of track sectors are assigned in advance between the blocks to distribute data to the disc drive to carry out a recording and/or reproducing operation thereof, the method comprising:

• detecting a defect sector of the disc drive;
• registering an address of the detected defect sector into a defect list;
• re-registering a block including the defect sector into an alternative area by using the spare sector so that track sectors for storing data in the vicinity of the defect sector are arranged continuously on the disc, with the exception of the defect sector, on the basis of the defect list and a correspondence relationship set in advance;
• restoring data of the defect sector included in the re-registered block;
• re-recording the restored data into the block re-registered in the alternative area;
• wherein when data is recorded into an area including the defect sector, data are continuously written into all sectors including at least one spare sector and at least one defect sector within a write-designated range and dummy data is written into the at least one defect sector.

A data recording and/or reproducing apparatus in which tracks of respective discs of a disc drive having plural discs are divided into plural blocks, and spare sectors each containing a predetermined number of track sectors are assigned in advance at predetermined intervals between the blocks to distribute data to the disc drive to carry out a recording and/or reproducing operation thereof, the apparatus comprising:

• address mapping means for storing a correspondence relationship between logical sectors and physical sectors of the disc drive;
• defect sector detection and storage means for detecting a defect sector of the disc drive and storing an address of the defect sector;
• reassign means for re-registering a block including the defect sector into an alternative area by using the spare sector so that track sectors for storing data in the vicinity of the defect sector are arranged continuously on the disc with the exception of the defect sector, on the basis of the address mapping means and the stored defect sector address;
• and
• memory means for storing recording and/or reproduction data of the plural disc drives,
• whereby when restored data re-recorded in the alternative area is reproduced, data are continuously read out from all sectors including at least one spare sector and at least one defect sector within a read-designated range to store the continuously read data into the memory means, and when the stored data is read out, data of the at least one defect sector is deleted.

A data recording and/or reproducing apparatus in which tracks of respective discs of a disc drive having plural discs are divided into plural blocks, and spare sectors each containing a predetermined number of track sectors are assigned in advance at predetermined intervals between the blocks to distribute data to the disc drive to carry out a recording and/or reproducing operation thereof, the apparatus comprising:

• address mapping means for storing a correspondence relationship between logical sectors and physical sectors of the disc drive;
• defect sector detection and storage means for detecting a defect sector of the disc drive and storing an address of the defect sector;
• reassign means for re-registering a block including the defect sector into an alternative area by using the spare sector so that track sectors for storing data in the vicinity of the defect sector are arranged continuously on the disc, with the exception of the defect sector, on the basis of the address mapping means and the stored defect sector address;
• and
• wherein when data is recorded into an area including at least one said defect sector, data are continuously written into all sectors including at least one spare sector and the at least one defect sector within a write-designated range, and dummy data is written into the at least one defect sector.

A data recording method in which tracks of respective discs of a disc drive having plural discs are divided into plural tracks, with each track being divided into track sectors, the method comprising:

• defining blocks on said disc drive for data storage, each block containing a plurality of track sectors;
• defining spare sectors on said tracks, each spare sector containing at least one of said track sectors;
• detecting a defect sector of the disc drive, and registering an address of the detected defect sector in a defect list;
• re-assigning a block including the defect sector into an alternative area by using a spare sector, on the basis of at least the defect list;
• and
• recording dummy data into the defect sector, to enable data to be subsequently read continuously from track sectors of the re-assigned block situated before, within and after the defect sector, with the dummy data being read from the defect sector.

A data reproducing method for reproducing data from a disc drive having plural discs, each disc having tracks divided into track sectors, wherein blocks have been defined on the disc drive for data storage, each block containing a plurality of track sectors, and spare sectors have been defined on said tracks, each spare sector containing at least one of said track sectors, and blocks have been re-assigned to alternative areas in accordance with a defect list containing addresses of defect sectors, the method comprising:

• consulting said defect list to determine addresses of said defect sectors;
• continuously reading out data from track sectors of a re-assigned block within a read-designated range that includes a defect sector;
• storing the continuously read data in a memory;
• and
• deleting the data read out from the defect sector when the stored data is read out from the memory.