Optical disc apparatus and disc management information acquisition method

摘要

The present invention provides a method or an apparatus for recording data additionally by acquiring replacement data easily even when the latest disc management information cannot be read out of the disc. When updating TDMS (Temporary Disc Management Structure), an update reason of a corresponding TDMS and a TDDS (Temporary Disc Definition Structure) start address in a previously recorded TDMS are recorded in disc management information as additional information. If the latest TDMS cannot be read out of the disc but the additional information can be read out, the additional information are referred to determine the latest LRA for use in additional data recording on the disc.