Samsung Electronics Co., Ltd.

Sangjin Yoo

Kwangwoo Lee

Heewon Lee

Yunjung Lee

Yeonji Kim

Hyojin Ahn

Byungchan Park

Jeongkeun Park

Jeongwoo Lee

Dongcheul Jang

There is provided a storage device, which includes: a memory device that includes a plurality of memory blocks, and stores first meta data including first status data and a first parameter in a first memory block among the plurality of memory blocks; and a memory controller that stores second meta data including second status data and second parameters, determines final meta data among a plurality of pieces of meta data including the first meta data and the second status data by comparing a plurality of pieces of status data with the first status data and the second status data, performs parameter confirmation for storing the final meta data in the meta block, and controls the memory device based on a parameter stored in the meta block.

Storage device and method for storing meta data in a distributed manner

Disclosed is an operation method of a controller which is configured to control a nonvolatile memory device. The method includes receiving cell counting data associated with selected memory cells included in the nonvolatile memory device from the nonvolatile memory device, adjusting operation parameters of the nonvolatile memory device based on the cell counting data, performing a valley search operation for the selected memory cells based on the adjusted operation parameters, and performing a read operation for the selected memory cells based on a result of the valley search operation.

Operation method of controller configured to control nonvolatile memory device and operation method of storage device

A storage device includes a non-volatile memory including memory blocks, and a storage controller including a history buffer including plural history read level storage areas corresponding to the memory blocks. The storage controller dynamically adjusts a number of the history read level storage areas allocated to one or more of the plurality of memory blocks based on reliabilities of the memory blocks during runtime of the storage device. The storage controller increases a number of history read level storage areas allocated to a first memory block among the memory blocks that has a relatively low reliability with respect to the reliabilities of remaining ones of the memory blocks.

Storage device adjusting history read level storage areas based on reliabilities of memory blocks, storage controller, and operating method of storage controller

Growing community of inventors

Bucheon-si, South Korea

Sangjin Yoo