A method for defect management of an optical disc. The optical disc includes a plurality of data blocks and a plurality of spare blocks, each data block is for recording data, each spare block is for replacing a defect data block to record a data. The method includes recording a status of the spare blocks...http://www.google.de/patents/US7020056?utm_source=gb-gplus-sharePatent US7020056 - Method for managing spare blocks of an optical disc