Information recording medium, and method and apparatus for recording and reproducing information

摘要

An information recording medium includes a lead-in area and a data area for storing contents information. The lead-in area includes a first lead-in information area and a second lead-in information area. The first lead-in information area corresponds to a first playback mode. The second lead-in information area corresponds to a second playback mode different from the first playback mode.
The first lead-in information area is an area in which information relating to the data area is to be recorded,
wherein an error correction ability in the error correction block units corresponds to an information amout of n bytes:
The second lead-in information area includes a pre-pit area having information whose amount is greater than at least n bytes regarding the prescribed error correction block unit.