Patent ID: 7840870
Filing Date: 2010-11-23
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 interleaved error correction modulation block, and a data arrangement order in each row of the interleaved error correction modulation block is related to a data arrangement order of the error correction block, the apparatus comprising: a first memory used to store the data the error correction block and supporting a page-mode function; a second memory used to store the data of the error correction block temporarily; an accessing device used to access the interleaved error correction modulation block from the optical storage medium and demodulate the interleaved error correction modulation block to recover an interleaved error correction block; a de-interleaver used to de-interleave the interleaved error correction block to recover the error correction block and store data of the error correction block into the second memory; a memory controller used to access the data of the error correction block from the second memory and store the data of the error correction block into the first memory; an error correction decoder used 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 used to access and output the corrected error correction block by column from the first memory.