Method of recording/reproducing digital data and apparatus for same
View Patent ↗A digital data recording/reproducing method includes the steps of: interleaving data on a PI code for each PI code of a 208-row ECC block; and converting a short burst error into random errors by dispersing errors on the PI codes. Moreover, the digital data recording/reproducing method increases correction capability against several bytes to several tens bytes of errors generated at random without changing burst error correction length by performing this processing for respective PI codes by using interleave rules that are different as much as possible from one another.
1. A data recording method for recording data to a disc comprising the steps of:
recording data to a DVD and to a higher recording density disc having a recording density that is higher than the DVD;
when recording data to the DVD, then:
dividing a main data into a plurality of blocks including identification data;
performing a scramble processing on the each block according to a scramble rule based upon the identification data; and
forming a data block organized as data columns and data rows from the plural scrambled blocks; and
encoding the data block to an ECC block by adding parity data;
when recording data to the higher recording disc, then:
forming a data block organized as data columns and data rows, each data row comprising a plurality of bytes;
for each data column in the data block, adding bytes to include an error correcting code parity;
rearranging the order of bytes in each data rows according plural rearranging rules to produce a rearranged data block, including rearranging a first row of data according to a first rearranging rule and rearranging at least a second row of data according to a second rearranging rule different from the first rearranging rule;
modulating each of the data rows in the rearranged data block to data frames constructing a modulated data block; and
recording the modulated data block to the higher recording density disc, data recorded on the higher recording density disc in the modulated data block.
2. A data reproducing method of reproducing data from a disc, comprising the steps of:
reproducing data from a DVD and from a higher recording density disc having a recording density that is higher than the DVD;
when producing data from the DVD, then:
encoding an ECC block to a data block organized as data columns and data rows;
forming a plurality of scrambled blocks from the data block;
performing a descramble processing on each scrambled block; and
reproducing a main data by using the plural descrambled blocks;
when reproducing data from the higher recording density disc, then:
reproducing a modulated data block stored on the higher recording density disc,
wherein the higher recording density disc comprises a plurality of modulated data blocks modulated from rearranged data blocks, each rearranged data block organized as data columns and data rows, each data column including an error code correcting parity,
wherein for a first data row of each rearranged data block, bytes in the first data row are ordered in accordance with a first rearranging rule,
wherein for a second data row of said each rearranged data block, bytes in the second data row are ordered in accordance with a second rearranging rule different from the first rearranging rule,
wherein data recorded on the higher recording density disc is recorded in the rearranged data block;
demodulating each of the data rows in a modulated data block to the rearranged data block;
reorganizing each data row in the rearranged data block on the higher recording density disc; and
performing an error correction process on the reorganized data block.