Skhynix Inc.

Jin Woong Suh

Jung Hyun Kwon

Won Gyu Shin

Do Sun Hong

Seung Gyu Jeong

An error correction method includes performing a first error correction code (ECC) decoding operation of read data outputted from a memory medium and storing the read data outputted from the memory medium into a loop-buffer, in a first operation mode, and performing a second ECC decoding operation of the read data stored in the loop-buffer in a second operation mode.

Error correction method of a memory system

A memory system includes a host controller and a cache system. The host controller includes a host queue in which host data including a command outputted from a host are stored. The cache system includes a cache memory having a plurality of sets and a cache controller controlling an operation of the cache memory. The cache controller transmits status information on a certain set to which the host data are to be transmitted among the plurality of sets to the host controller. The host controller receives the status information from the cache controller to determine transmission or non-transmission of the host data stored in the host queue to the cache system.

Memory systems having a cache system and a host controller having a host queue

A memory system includes a Reed-Solomon (RS) decoder, a reliability tracking circuit, and an erasure control circuit. The RS decoder performs an error correction decoding operation of 'K'-number of symbols outputted from a memory medium. The reliability tracking circuit generates and stores information on a reliability of the symbols, error occurrence possibilities of which are distinguished into a plurality of different levels according to the error correction decoding operation performed by the RS decoder. The erasure control circuit controls the RS decoder such that the symbols are erased in order of the reliability of the symbols from a low reliable symbol to a high reliable symbol and the error correction decoding operation is performed according to the information on the reliability of the symbols stored in the reliability tracking circuit.

Memory systems and methods of correcting errors in the memory systems

A memory system includes a memory medium, a loop-buffer configured to store read data outputted from the memory medium in a first operation mode, a fake-command generator configured to generate a fake-command in a second operation mode, and an error correction code (ECC) decoder configured to perform an ECC decoding operation of the read data stored in the loop-buffer in response to the fake-command.

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Icheon-si, South Korea

Jin Woong Suh