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Abstract

A memory controller including a buffer configured to perform decoding frame-unit data decoded by an LDPC decoder through partial parallel processing based on a check matrix made up of a block of a unit matrix and a plurality of blocks in which each row of the unit matrix is sequentially shifted and store threshold decision information of the data read from a memory section, an LLR conversion section configured to convert the threshold decision information to an LLR, an LMEM configured to store probability information β calculated during iteration processing that repeatedly performs column processing and row processing based on the LLR in an iteration unit equal to or smaller than a size of the block, and a CPU core configured to transfer the probability information β stored in the LMEM to the buffer every time the iteration processing in the iteration unit is completed.

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First Claim