Patent ID: 8379499
Filing Date: 2013-02-19
Classification: G11B

Abstract:
1. A method of recording data on a disk, comprising: receiving 32 sectors of user data, each sector including 2048 bytes; error-correction coding the received user data using a long distance code (LDC) to form an LDC block having 304 columns with 216 rows of data and 32 rows of parity information, wherein the step of error-correction coding the received user data includes forming an LDC cluster from the LDC block, the LDC cluster having 152 columns and 496 rows; receiving 32 units of user control data, each unit including 18 bytes; forming an access block from the user control data and address data, the access block having 24 columns and 30 rows; error-correction coding the access block using a burst indicator subcode (BIS) to form a BIS block having 24 columns with 30 rows of data and 32 rows of parity information; forming a BIS cluster form the BIS block, the BIS cluster having 3 columns and 496 rows; forming an error-correction code (ECC) cluster having 155 columns and 496 rows by repeatedly alternating a block of 38 columns of the LDC cluster and one column of the BIS cluster; forming a physical cluster from the ECC cluster; and recording the physical cluster in a read-write zone on the disk.