US 2006/0242528 A1 · Error correction method for high density disc

Abstract

An error correction method for optical discs, and more particularly, an error correction method appropriate to high density discs is provided. The error correction method adds inner parity and outer parity to an error correction block of size n byte x m x o. The method comprises the steps of obtaining a plurality of inner parity blocks (PI blocks) by segmenting the error correction block in the inner parity (PI) direction into x segments; generating e-byte PI for each of the plurality of PI blocks generated by segmenting, and adding the e-bytes to the PI blocks PIs to the PI direction; and generating f-byte outer parity (PO) in the PO direction of the error correction block, and adding the POs to the PO direction. The error correction method enhances error correction capability while maintaining a redundancy of parity signal on a level similar to conventional DVDs.

Claims12

Dependent claims

A reproducing apparatus to reproduce data from a disk, the disk including an error correction block structure to correct an error in the disk, the reproducing apparatus comprising:

an optical pickup to transfer data from the disk;
and
a controller which controls the optical pickup to detect the error correction block structure from the disk, the error correction block structure comprising:
a plurality of correction blocks, each correction block segmented into a predetermined size;
a plurality of f-byte outer parities, each f-byte outer parity adjacent to a corresponding segmented correction block in an outer parity (PO) direction;
and
a plurality of e-byte inner parities, each e-byte inner parity adjacent to a corresponding segmented correction block and to a corresponding f-byte outer parity, in an inner parity (PI) direction, wherein the segmented correction block having the corresponding e-byte inner parity and the corresponding f-byte outer parity is recognized by the reproducing apparatus so as to correct the error.

4 more elements

Dependencies are inferred from the claim text.

Error correction method for high density disc

Life of this patent

Error correction method for high density disc

Life of this patent

Abstract

Claims12