Samsung Electronics Co., Ltd.

Electronics and Telecommunications Research Institute

Namshik Kim

Junjin Kong

Biwoong Chung

Tae-Hwan Kim

Ho-Jin Lee

Dae-Ig Chang

Pansoo Kim

In-Ki Lee

Daewook Kim

Hanho Lee

Bongseop Song

Hyuncheol Park

Seong In Hwang

A storage device is provided which includes an ECC circuit. At a write operation, the ECC circuit generates a CRC (cyclic redundancy check) parity corresponding to data and generates an ECC (error correction code) parity corresponding to the data using an error correction code. At a read operation about the data stored in the at least one nonvolatile memory device, the ECC circuit corrects an error of the data using the CRC parity and the ECC parity.

Memory controller, storage device including the same and data encoding and decoding methods thereof

A semiconductor memory system may include a read data manager configured to store data read from a memory device, a likelihood value mapper configured to map likelihood values to the data output from the data manager and output mapping data, and a decoder configured to perform low density parity check decoding on the mapping data by using a parity check matrix. The parity check matrix may be a k*N&#xd7;M matrix including k*N&#xd7;M submatrices, where k, N and M are independently an integer equal to or greater than 2.

Semiconductor memory system including Reed-Solomon low density parity check decoder and read method thereof

Methods of reading data from storage devices may include reading data stored in the storage device using normal read voltages; performing a first low density parity check (LDPC) decoding based on the read data; generating reliability bits of each of read bits according to the decoding result, the read bits being bits of the read data; and performing a second low density parity check (LDPC) decoding based on the read data and the reliability bits to perform a first error correction on the read data.

Method of reading data from storage device, error correction device and storage system including error correction code decoder

Provided are repetition apparatus and method for repeatedly transmitting and receiving a data packet using different puncturing patterns to overcome signal attenuation and fading in a high speed mobile environment by repeatedly transmitting the duplicated information bit sequences with parity bits having a different puncturing pattern after channel-encoding the duplicated information bit. The repetition apparatus for repeatedly transmitting a data packet, includes a dual data generator for generating duplicated information bit sequences identical to each of information bit sequences to transmit, a channel encoder for dividing each of the duplicated information bit sequences into a plurality of information bits, and generating coded data packets alternately having a plurality of parity bits according to different puncturing patterns for each of the divided information bits, and a transmitter for transmitting the generated coded data packets sequentially.

Repetition apparatus and method for repeatedly transmitting and receiving data packet using different puncturing patterns

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Seoul, South Korea

Namshik Kim