OPTICAL INFORMATION STORAGE MEDIUM

摘要

An optical information storage medium includes a lead-in area, a lead-out area, and a user data area between the lead-in and lead-out areas and in which use r data is recorded. Pits are formed in the lead-in area, the user data area, a nd the lead-out area, and a track pitch in all or a portion of the lead-in area is different from a track pitch in the remaining area of the optical informatio n storage medium