Patent ID: 8345525

Claim:
A method of recording data on a disk, comprising: receiving two 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 19 columns with 216 rows of data and 32 rows of parity information; receiving two units of user control data, each unit including 24 bytes; forming an access block from the user control data and address data, the access block having four columns and 30 rows; error-correction coding the access block using a burst indicator subcode (BIS) to form a BIS block having four columns with 30 rows of data and 32 rows of parity information, wherein the step of error-correction coding the received user data includes adding a 4-byte error detection code to each sector of the user data to form a data frame; scrambling the data frame to form a scrambled data frame; forming a data block having 19 columns and 216 rows from the scrambled data frame; and forming the LDC block by adding the 32 rows of the parity information to the data block; forming a BIS cluster form the BIS block, the BIS cluster having one column and 248 rows; forming a cluster having 20 columns and 248 rows by alternating a block of ten columns of the LDC block, one column of the BIS cluster, and nine columns of the LDC block; and recording the cluster in a reproduction-only zone on the disk.