Patent ID: 6373800
Filing Date: 2002-04-16
Classification: G11B

Abstract:
A data recording method including a replacement process, comprising:the step of assigning k2 blocks larger than k1 blocks substantially required for recording k1 ECC block data as a recording area of the k1 ECC block data upon recording the k1 ECC block data on an optical disk, the optical disk having a plurality of zones, a plurality of sector fields being successively assured on each of the plurality of zones, the successive sector fields forming a track wobbled at a predetermined period, each sector field having a recording field and a plurality of header fields, identical address data being recorded on the header fields assured in a single sector field, one block including a predetermined number of sector fields, a predetermined number of sector data generated based on the ECC block data being recorded in a predetermined number of recording fields included in a block to have one-to-one correspondence with each other upon recording the ECC block data in the block, the ECC block data including block data, a first error correction code, and a second error correction code, the block data including predetermined data added along a first direction and a second direction perpendicular to the first direction, the first error correction code correcting the predetermined data along the first direction, the second error correction code correcting the predetermined data along the second direction, and the sector data including a segment of the block data segmented into a predetermined number of segments, a segment of the first error correction code corresponding to the segment of the block data, and a segment of the second error correction code segmented into a predetermined number of segments.