Patent ID: 8149664
Filing Date: 2012-04-03
Classification: G11B

Abstract:
1. A method for managing a defect area detected while recording data on a write-once recording medium, the recording medium having a data zone and a non-data zone, the data zone having inner and outer spare areas and a user data area, the method comprising: when data is recorded in non real-time, performing one of a first skip replacement and a linear replacement, the first skip replacement skips the defect area and continuously records data starting from a cluster subsequent to the defect area and the linear replacement replaces the defect area with a replacement area of the spare area, and recording defect management information including position information of the defect area and position information of the replacement area onto temporary management areas allocated to the non-data zone and the inner and outer spare areas, two of the temporary management areas being located on an inner side of the inner spare area and an outer side of the outer spare area, respectively, wherein the defect management information of the linear replacement is recorded as a re-allocatable defect (RAD) type if the defect area is a single cluster, and recorded as a consecutive re-allocatable defect (CRD) type if the defect area is a plurality of consecutive clusters, and the defect management information of the first skip replacement is recorded as a non-reallocatable defect (NRD) type if the defect area is a single cluster, and recorded as a consecutive non-reallocatable defect (CND) type if the defect area is a plurality of consecutive clusters; and when data is recorded in real-time, performing one of a second skip replacement and a stream recording, the second skip replacement skips multiple consecutive clusters and records data starting from a cluster subsequent to the multiple consecutive clusters, and the stream recording ignores the defect area and records data continuously on the defect area without an allocation of a replacement area, wherein the second skip replacement further includes recording defect management information including position information of the defect area onto the temporary management area, wherein the defect management information of the second skip replacement is recorded as a consecutive non-reallocatable defect (CND) type.