Samsung Electronics Co., Ltd.

Chan-Ik Park

Won-Moon Cheon

Seon-Taek Kim

Sung-up Choi

Moon-Wook Oh

Do-Geun Kim

Jin-Hyuk Kim

Prakash Talawar

Jin-Soo Kim

Tae-Sung Jung

Yang-sup Lee

Sang-Jin Oh

Sang Lyul Min

In-Hwan Doh

Min-Soo Moon

Byoung-Kook Lee

Kyun-Ho Kook

Sung-Chul Kim

Jin-Yub Lee

Jin-wook Lee

Sang-Woo Kim

Young-Joon Choi

Young-Ho Park

Sun-Young Park

Bum-Soo Kim

Chul Ju Lee

Won-Seok Lee

Young-Jin Park

Sang-Won Hwang

Ji-Soo Kim

Byung-Gook Kim

Jin-kyu Kim

Nam-wook Kang

Hyun-Jin Choi

Dong-Hyun Song

Hye-Young Kim

Tae-sun Chung

Kwang-yoon Lee

Sung-Hwan Bae

Kyong-Ae Kim

Jeong-Uk Kang

Seong-Jun Ahn

Kwang-Yoon Lee

Young-gon Kim

Myoung-Soo Jung

Kui-Yon Moon

Hyun-Mo Chung

Sang-Ryul Min

Kwang-Hun Lee

Hyun-mo Chung

Sung-ju Myoung

In-Sung Song

Jae-wook Cheong

Jeong-uk Kang

Dong-Won Kang

Jae-Wook Cheong

Sung-Ju Myoung

In a method of operating the memory system, the method includes detecting whether data of a read-out unit read from a first cell region has an error correction code (ECC) failure, in response to an external read-out request for the read-out unit, recovering and outputting the data of the read-out unit by performing Redundant Array of Inexpensive Disk (RAID) recovery by using data and RAID parity read from other cell regions, recovering a plurality of pieces of data stored in the first cell region by performing the RAID recovery using the data and RAID parity read from the other cell regions, and migrating the recovered plurality of pieces of data to a second cell region in units of cell regions.

Memory system for performing RAID recovery and a method of operating the memory system

In an operating method of a memory controller, the memory controller includes a logical-to-logical (L2L) mapping table including mapping information between a first logical area and a second logical area and a logical-to-physical (L2P) mapping table including mapping information between the second logical area and a physical area of a memory device. The operating method includes receiving a first logical address of the first logical area and a first command for changing the L2L mapping table to access first data stored in the memory device through the first logical address, detecting a second logical address of the second logical area mapped to a physical address of the physical area in which the first data is stored, in response to the first command, and changing the L2L mapping table to map the first logical address to the second logical address.

Memory controller, nonvolatile memory system, and operating method thereof

A memory access control method that can prevent a cell hammer phenomenon includes setting at least a part of all the memory cells a safe memory region, and setting the remaining memory cells to a normal memory region. In the safe memory region, some cells set to an enabled state are accessible for data writing or reading, and the remaining cells set to a disabled state are inaccessible. Based on a safe address mapping algorithm, access to all memory cells in the safe memory region is controlled such that access to the enabled memory cells is allowed and access to the disabled memory cells is prevented. The enabled memory cells in the safe memory region are spaced apart from each other by at least one disabled memory cell in a horizontal and/or vertical direction.

Method of controlling memory cell access based on safe address mapping

In one aspect, a method of writing data in a flash memory system is provided. The flash memory system forms an address mapping pattern according to a log block mapping scheme. The method includes determining a writing pattern of data to be written in a log block, and allocating one of SLC and MLC blocks to the log block in accordance with the writing pattern of the data.

Flash memory device with multi-level cells and method of performing operations therein according to a detected writing patter

A method of processing input/output (I/O) in a storage device includes adjusting a read anticipation time based on a change of a resource management status related to operations of the storage device and performing an I/O processing operation at the storage device based on the adjusted read anticipation time. The I/O processing operation is performed to postpone an operation regarding a program command and perform a read command at higher priority than a write command at the storage device in a period from completion of a read operation at the storage device until the read anticipation time has elapsed.

Method of processing input/output in storage device and storage device and non-volatile memory device using the method

In one aspect, data is stored in a solid state memory which includes first and second memory layers. A first assessment is executed to determine whether received data is hot data or cold data. Received data which is assessed as hot data during the first assessment is stored in the first memory layer, and received data which is first assessed as cold data during the first assessment is stored in the second memory layer. Further, a second assessment is executed to determine whether the data stored in the first memory layer is hot data or cold data. Data which is then assessed as cold data during the second assessment is migrated from the first memory layer to the second memory layer.

Solid state memory (SSM), computer system including an SSM, and method of operating an SSM

Flash memory device with multi-level cells and method of writing data therein

A tree data structure is stored in a flash memory device by storing a leaf node and an index node comprising a pointer to the leaf node in a same page of the flash memory device, which may be read on a per-page basis. A modified version of the leaf node and a modified version of the index node may be stored in a new page of the flash memory device when, for example, a key value is added to or deleted from the leaf node.

Data tree storage methods, systems and computer program products using page structure of flash memory

A data processing system that includes a host system and an external data storage device with an erase before write memory device thereon can be operated by sending a file delete command from the host to the data storage device for one or more files stored thereon. The file delete command may specify a logical address and data to be invalidated associated with the deleted file. The data storage device may identify one or more units of memory allocation in the erase before write memory as containing invalid data based on the specified logical address and data to be invalidated. The data storage device may maintain a data structure that associates physical addresses for units of memory allocation in the erase before write memory with indications of whether the units of memory allocation contain invalid data. The data structure may be used to mark units of memory allocation associated with deleted files as containing invalid data.

Systems, methods and computer program products for operating a data processing system in which a file delete command is sent to an external storage device for invalidating data thereon

A cooperative memory card system includes a memory card device, and a host in signal communication with the memory card device, where the host assumes at least one memory management function for the memory card device; and a corresponding method of cooperative memory management between a host and a memory card device includes selecting at least one of several memory management functions to be performed by the host for the device.

Cooperative memory management

Provided are a portable storage device and a method of managing a resource of the portable storage device. The method includes converting a first DRM application into a ready status from an idle status if task processing of the first DRM application is required, and converting the first DRM application into a pending status and a second DRM application into the ready status from the idle status if task processing of the second DRM application is required.

Portable storage device and method of managing resource of the portable storage device

A device driver including a flash memory file system and method thereof and a flash memory device and method thereof are provided. The example device driver may include a flash memory file system configured to receive data scheduled to be written into the flash memory device, the flash memory file system selecting one of a first data storage area and a second data storage area within the flash memory device to write the received data to based upon an expected frequency of updating for the received data, the first data storage area configured to store data which is expected to be updated more often than the second data storage area. The example flash memory device may include a first data storage area configured to store first data, the first data having a first expected frequency for updating and a second data storage area configured to store second data, the second data having a second expected frequency of updating, the first expected frequency being higher than the second expected frequency.

Device driver including a flash memory file system and method thereof and a flash memory device and method thereof

A data storage device for processing a command includes a host interface and a controller. The host interface stores program information sent within the command from a host. The controller decodes the program information that indicates a memory type to be accessed for the command. In addition, the controller determines whether the specified memory type can be accessed according to the command. The controller performs the command by accessing the memory type when the memory type specified by the program information is available for access.

Method and data storage device for processing commands

Growing community of inventors

Seoul, South Korea

Chan-Ik Park