Abstract: A method of operating a storage controller includes receiving raw data indicating a series of bits each corresponding to one of threshold voltage states, performing a first state shaping for reducing a number of first target bits of the series of bits, logical values of the first target bits being equal to a logical value of a target threshold voltage state of the threshold voltage states in a first page of plural pages, generating first indicator data that indicates the first target bits based on the first state shaping, compressing the first indicator data, and storing the compressed first indicator data.

Abstract: Example embodiments relate to a bad area managing method of a nonvolatile memory device. The nonvolatile memory device may include a plurality of memory blocks and each block may contain memory layers stacked on a substrate. According to example embodiments, a method includes accessing one of the memory blocks, judging whether the accessed memory block includes at least one memory layer containing a bad memory cell. If a bad memory cell is detected, the method may further include configuring the memory device to treat the at least one memory layer of the accessed memory block as a bad area.

Abstract: A memory controller comprises a host interface block comprising a compression ratio calculator configured to determine whether a compression ratio of input data exceeds a predetermined compression ratio, and a compression block configured to compress the input data as a consequence of the host compression ratio calculator determining that the compression ratio exceeds the predetermined compression ratio.

Abstract: A memory controller comprises a host interface block comprising a compression ratio calculator configured to determine whether a compression ratio of input data exceeds a predetermined compression ratio, and a compression block configured to compress the input data as a consequence of the host compression ratio calculator determining that the compression ratio exceeds the predetermined compression ratio.

Abstract: A method of storing data in a storage medium and a data storage device including the storage medium are provided. The method of storing data in accordance with exemplary embodiments of the inventive concept may include receiving data to be stored in the storage medium; determining whether the received data is user data or metadata used to manage the user data; and selectively compressing the received data according to a type of the determined data. Selectively compressed data is stored in the storage medium.

Abstract: Example embodiments relate to a bad area managing method of a nonvolatile memory device. The nonvolatile memory device may include a plurality of memory blocks and each block may contain memory layers stacked on a substrate. According to example embodiments, a method includes accessing one of the memory blocks, judging whether the accessed memory block includes at least one memory layer containing a bad memory cell. If a bad memory cell is detected, the method may further include configuring the memory device to treat the at least one memory layer of the accessed memory block as a bad area.

Abstract: A write method of a data storage device including a storage media includes receiving data to be stored in the storage media; judging whether the received data is compressed data, without externally provided additional information; and selectively compressing the received data according to the judgment result, wherein the judging whether the received data is compressed data is made based on a distribution of actual symbols included in at least part of the received data.