Recording/reproducing apparatus for performing RMW for low, recording/reproducing method therefor, and information storage medium therefor

A recording/reproducing apparatus comprising:

• a pickup which emits or receives a light to transfer data with respect to an information storage medium;
• and
• a controller arranged to control the pickup to:
• record replacement data for updating data recorded on the medium in an area for replacement by logical overwrite (LOW),
• record replacement data for replacing a defect occurring on the medium in an area for replacement by defect, and
• if a defect occurs in an original block recorded in a predetermined area of the medium during a read-modify-write (RMW) process for a replacement by LOW for at least partial data of the original block, record a replacement block replacing the original block in the area for replacement by LOW,
• wherein the controller is further configured to generate a defect list (DFL) entry comprising location information of the original block and location information of the replacement block in order to indicate a replacement state,
• wherein the replacement block comprises a data portion containing user data and an additional information portion containing the location information of the original block.

A recording/reproducing apparatus comprising:

• a pickup which emits or receives a light to transfer data with respect to an information storage medium;
• and
• a controller arranged to control the pickup to:
• read a defect list (DFL) entry indicating a replacement state comprising location information of an original block and location information of a replacement block, from the information storage medium, and
• read the replacement block using the defect list entry, from the information storage medium,
• wherein the replacement block is a block which is recorded for replacing the original block using replacement by LOW, due to a defect occurring in the original block recorded in a predetermined area of the medium during a read-modify-write (RMW) process for a replacement by LOW for at least partial data of the original block, and
• wherein the replacement block is a recording or reproducing unit block, which comprises a data portion containing user data and an additional information portion containing the location information of the original block.