Patent ID: 7380196

Claim:
A data recording medium manufactured by a recording apparatus, the data recording medium storing information by forming error correction code (ECC) blocks, the ECC blocks comprising: a plurality of sectors including said information; a first PO creation block relating to one of the ECC blocks, the first PO creation block being configured by rows in the plurality of sectors; a second PO creation block relating to an other one of the ECC blocks, the second PO creation block being configured by rows in the plurality of sectors; a first PO created into the first PO creation block, each row of the first PO being included in each even-numbered sector and PI being attached to each row of the first PO; and a second PO created into the second PO creation block, each row of the second PO being included in each odd-numbered sector and PI being attached to each row of the first PO, wherein the recording process of the recording apparatus comprises: creating the first PO creation block; creating the second PO creation block; creating the first PO into the first PO creation block, each row of the first PO being attached to said each even-numbered sector in the first PO creation block; creating the second PO into the second PO creation block, each row of the second PO being attached to said each odd-numbered sector in the second PO creation block; and creating the PI for each of the rows.