Patent ID: 8611194
Filing Date: 2013-12-17
Classification: G11B

Abstract:
1. A recording and reproducing apparatus having a defect management function that records and reproduces data in units of predetermined recording blocks, using a medium having a user data area, an spare area, and a management information storage area updated when the spare area is used wherein during defect management processing, a DFL (Defect List) is registered as RAD (Re-Allocated Defect) entry when an alternate source block is composed of one recording block and a DFL is registered as CRD (Contiguous Re-allocated Defect) entry when an alternate source block is composed of contiguous recording blocks, said recording and reproducing apparatus comprising: a verification unit which performs verification processing for reproducing recorded data and determining a reproduction result; a DFL registration determination unit which determines a DFL registration type based on the result of said verification unit; a management information storage unit which stores management information, which includes DFL information, in the management information storage area based on the result of said DFL registration determination unit; and an spare area recording data recording unit which records spare area recording data in the spare area based on the result of said DFL registration determination unit, wherein said DFL registration determination unit treats a recording block, preceded and followed by one or more RAD entry- or CRD entry-registered defective blocks in the user data area and not recorded in the spare area, as a defective block and registers the recording block, together with the preceding and following RAD entries or CRD entries, as a part of CRD entry.