Information recording medium, recording/reproducing apparatus, and recording/reproducing method to distinguish between an original recording block and a replacement recording block

A recording/reproducing apparatus comprising:

• a write/read unit to write data on and/or read data from an information recording medium;
• and
• a controller to control the write/read unit to write, on the information storage medium:
• a second recording unit block replacing a first recording unit block recorded on the information recording medium;
• and
• a defect list entry,
• wherein the first recording unit block and the second recording unit block respectively comprise information identifying whether the corresponding recording unit block is a replacement block;
• and
• replacement data stored in the second recording unit block is reproduced using the defect list entry,
• wherein the second recording unit block is selected in a user data area of the information recording medium in response to a command to record second data in the first recording unit block in which first data already has been recorded,
• the second recording unit block has a logical address identical to a logical address of the first recording unit block, and
• the defect list entry comprises
• physical address information of the first recording unit block, and
• physical address information of the second recording unit block.

A reproducing apparatus for reproducing data from an information recording medium, the information storage medium comprising a first recording unit block comprising user data, and a second recording unit block replacing the first recording unit block, the reproducing apparatus comprising:

• a write/read unit to write data on and/or read data from the information recording medium;
• and
• a controller to control the write/read unit to:
• read, from the information storage medium, a defect list entry;
• and
• read replacement data stored in the second recording unit block using the defect list entry;
• wherein the first recording unit block and the second recording unit block respectively comprise information identifying whether the corresponding recording unit block is a replacement block, and
• wherein the second recording unit block is selected in a user data area of the information recording medium in response to a command to record second data in the first recording unit block in which first data already has been recorded;
• the second recording unit block has a logical address identical to a logical address of the first recording unit block, and
• the defect list entry comprises
• physical address information of the first recording unit block, and
• physical address information of the second recording unit block.

A recording method for recording data on an information recording medium, the recording method comprising:

• recording, on the information storage medium:
• a second recording unit block replacing a first recording unit block recorded on the information recording medium;
• and
• a defect list entry,
• wherein the first recording unit block and the second recording unit block respectively comprise information identifying whether the corresponding recording unit block is a replacement block;
• and
• replacement data stored in the second recording unit block is reproduced using the defect list entry,
• wherein the second recording unit block is selected in a user data area of the information recording medium in response to a command to record second data in the first recording unit block in which first data already has been recorded,
• the second recording unit block has a logical address identical to a logical address of the first recording unit block, and
• the defect list entry comprises
• physical address information of the first recording unit block, and
• physical address information of the second recording unit block.

A reproducing method for reproducing data from an information recording medium, the information storage medium comprising a first recording unit block comprising user data, and a second recording unit block replacing the first recording unit block, the method comprising:

• reading, from the information storage medium, a defect list entry,
• reproducing replacement data stored in the second recording unit block using the defect list entry;
• wherein the first recording unit block and the second recording unit block respectively comprise information identifying whether the corresponding recording unit block is a replacement block, and
• wherein the second recording unit block is selected in a user data area of the information recording medium in response to a command to record second data in the first recording unit block in which first data already has been recorded,
• the second recording unit block has a logical address identical to a logical address of the first recording unit block, and
• the defect list entry comprises
• physical address information of the first recording unit block, and
• physical address information of the second recording unit block.