A defect list (FIG. 12B) on an information recording medium only includes pairings (A1 and A2, B1 and B3 in FIG. 12B) of addresses of defective sectors belonging to the data sector area and addresses of non-defective sectors which belong to the spare sector area and which are to be used to replace...http://www.google.de/patents/US5715221?utm_source=gb-gplus-sharePatent US5715221 - Method for managing defects in an information recording medium, and a device and information recording medium using said method 
