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US 8,345,525 B2Granted
Disc recording medium, disk drive apparatus, reproduction method, and disk manufacturing method
AssigneeSony Corporation
InventorShoei Kobayashi
Life of this patent
Estimating the term…
Abstract
A recording and reproducing area and a reproduction-only area are formed by wobbling a groove formed in a spiral fashion to form a track to be tracked on a disk. The recording and reproducing area has address information recorded by wobbling of the groove and information recorded and reproduced by phase change marks on the track formed by the groove where the address information is recorded. The reproduction-only area has prerecorded information recorded by wobbling of the groove.
Claims5
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.
11 more elements
A recording apparatus for recording data on a disk, comprising:
- an Error-Correction Code (ECC) encoder configured to
- receive two sectors of user data, each sector including 2048 bytes;
- error-correction code 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;
- receive two units of user control data, each unit including 24 bytes;
- form an access block from the user control data and address data, the access block having four columns and 30 rows;
- error-correction code 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 in the error-correction coding, the encoder is configured to:
- add a 4-byte error detection code to each sector of the user data to form a data frame;
- scramble the data frame to form a scrambled data frame;
- form a data block having 19 columns and 216 rows from the scrambled data frame;
- and
- form the LDC block by adding the 32 rows of the parity information to the data block;
- form a BIS cluster form the BIS block, the BIS cluster having one column and 248 rows;
- and
- form 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
- means for recording the cluster in a reproduction-only zone on the disk.
13 more elements
A non-transitory disk recording medium, comprising:
- a groove formed in a spiral fashion to form a track on the disk recording medium;
- a recording and reproducing area in which address information is recorded by wobbling of said groove and the track formed by said groove is used for recording and reproducing mark information;
- and
- a reproduction-only area in which prerecorded information is recorded by wobbling of said groove,
- wherein a plurality of recording frames are recorded in the reproduction-only area, each recording frame consisting of a frame synchronization byte and 20 bytes of data consisting of ten bytes of long distance code (LDC) data, one byte of BIS data, followed by nine bytes of the LDC data.
2 more elements
Dependencies are inferred from the claim text.