Patent ID: 6314235
Filing Date: 2001-11-06
Classification: G11B,H04N

Abstract:
A reproduction method for an information recording disk having a volume space in which a file and a file management information for managing the file are recorded, wherein:the file recorded in the volume space is either an audio/video (AV) file or a non-AV file;defect management for the non-AV file is based on a first defect management method in which, when a defective sector is detected, an Error Correcting Code (ECC) block including the defective sector is replaced with another ECC block;defect management for the AV file is based on a second defective management method which is different from the first defective management method;the AV file is allocated to at least one recording area in the volume space such that the at least one recording area is an area of continuous sectors of at least one ECC block;the second defective management method is performed by using an AV extent, which is an area of continuous sectors of AV data in the at least one recording area, and a padding extent, which is an area of continuous sectors in the at least one recording area from an end of the AV extent to a boundary of an ECC block;the file management information includes attribute information indicating whether the file recorded in the volume space is the AV file or the non-AV file;when the attribute information indicates that the file is the AV file, the file management information further includes at least one first location information, second location information, at least one first identification information and second identification information;the at least one first location information specifying the location of an AV extent;the second location information specifying the location of a padding extent;the at least one first identification information indicating an AV extent; andthe second identification information indicating a padding extent;the reproduction method comprises the steps of:determining whether the file recorded in the volume space is the AV file in accordance with the attribute information of the file management information recorded in the volume space;when it is determined that the file is the AV file, referring to the at least one first location information in the file management information, reading AV data from the AV extent specified by the at least one first location information based on the second defective management method, thereby continuously reproducing the AV data; andwhen it is determined that the file is the non-AV file, reading data other than the AV data from the volume space based on the first defective management method.