Recording medium including first and second areas, the second area including a written multiply block, and recording and reproducing methods and apparatus thereof

摘要

A recording medium for recording information, a recording apparatus and a recording method, and a reproduction apparatus and a reproduction method. The recording medium includes: a first area for recording contents data of the recording medium by a predetermined code; a second area other than the first area; wherein the second area includes a block with added 16-byte parity into medium ID information, wherein the block is written multiply.