Patent ID: 7434140
Filing Date: 2008-10-07
Classification: G11B

Abstract:
1. An apparatus for accessing and transferring optical data, the apparatus performing an error correction process on an error correction block, and the error correction block comprising a data matrix with a plurality of columns and a plurality of rows, wherein each column of the data matrix is a decoding set, the data matrix is recorded on an optical storage medium in a row direction to form an error correction modulation block, and a data arrangement order in each row of the error correction modulation block has a relation to a data arrangement order in each row of the error correction block, the apparatus comprising: a first memory configured to store the data of the error correction block and supporting a page-mode function; an accessing device configured to access the error correction modulation block from the optical storage medium, demodulate the error correction modulation block to recover the error correction block and store data of the error correction block in the first memory so that the data of the error correction block in the same columns are more concentrated at predetermined localities of the first memory than the data in the same rows; an error correction decoder configured to access the data of the error correction block by column from the first memory to perform the error correction process; and a transmission interface configured to access and output the corrected error correction block by column from the first memory.