Samsung Electronics Co., Ltd.

Chang-Eun Choi

Yang Yu

Kyung Ho Kim

Walter Jun

Hingkwan Huen

Robert Brennan

Hyun-Ju Kim

Karnik Shah

Wonchuri Zoo

Bin Lu

Taekeun Jeon

Moon-Sang Kwon

Jung-hoon Kim

Sung-Joo Kim

Jung Wook Kim

Jin-Hyuk Kim

Yong-Hyeon Kim

Jong-hwan Lee

Young-gon Kim

Kyoung-Ryun Bae

Hee-Tak Shin

Kyoung Ryun Bae

Kyoungryun Bae

Embodiments of the inventive concept include computer-implemented method for shadowing one or more boot images of a mobile device. The technique can include duplicating boot images to shadow partitions in a user area of a non-volatile memory device such as a flash memory. The technique can include detecting boot image corruption, and causing a mobile device to boot from the shadow partitions. The technique can include dynamically shadowing and releasing blocks used by the shadow partitions. The technique can include boot failure recovery and bad image preservation through firmware flash translation layer (FTL) logical to physical mapping updates. Boot image corruption failures can be recovered from and/or debugged using the shadow partitions.

Mobile flash storage boot partition and/or logical unit shadowing

An embodiment includes a system, comprising: a device configured to present a logical device and enable a virtual device in response to a control signal; and a processor coupled to the device and configured to: present the logical device through a first device interface; transmit the control signal to the device to enable the virtual device; and after the virtual device is enabled, present the virtual device through a second device interface.

Devices and systems with virtual devices that may be selectively enabled

Virtual device based systems with access to parts other than data storage elements through the virtual device

A memory system includes a nonvolatile memory device, a memory controller for controlling the nonvolatile memory device and a virtual data interface layer that manages reading and/or writing of patterned data from/to the nonvolatile memory device. In a read operation, the virtual data interface layer generates patterned data that is requested to be read. Accordingly, a read speed of the memory system may be improved.

Memory systems and methods of operating the same

A memory card system and related write method are disclosed. The method includes receiving a write request for a predetermined page; performing a write operation on a first log block that corresponds to a first data block including the page; receiving an update request for the page; and performing a write operation on a second log block that corresponds to the first data block. The memory card system includes: at least one non-volatile memory including a data block and a log block for updating the data block; and a memory controller controlling an operation of the non-volatile memory. During a write operation for a predetermined page, the controller controls writing of a first log block corresponding to a first data block including the predetermined page, and controls writing of a second log block during an update operation of the predetermined page.

Write and merge methods in memory card systems for reducing the number of page copies

A method of writing partial page data in a non-volatile memory device includes, reading data from a second block when the size of a last page of data to be written in a page of a first block is smaller than a size of the page of the first block, wherein a size of the read data is given by the size of the page of the first block minus the size of the last page of data; storing together data of the last page and the data read from the second block in a buffer; and writing the data stored in the buffer in the first block.

Methods of writing partial page data in a non-volatile memory device

A memory system comprises a plurality of nonvolatile memory devices configured for interleaved access. Programming times are measured and recorded for various memory cell regions of the nonvolatile memory devices, and interleaving units are formed by memory cell regions having different programming times.

Nonvolatile memory system using data interleaving scheme

A system provided for authenticating a storage device includes a computer system, an intermediate converter and a storage device. The computer system stores an application program to execute functions of a storage device. The intermediate converter connects the computer system and the storage device. The storage device store multiple predetermined sector addresses and an order of the predetermined sector addresses. The computer system authenticates the storage device using the application program and sector data stored at the predetermined sector addresses. The predetermined sector addresses may be predetermined by both the storage device and the application program.

Method and system for authenticating storage device connected through intermediate converter

Growing community of inventors

Seoul, South Korea

Chang-Eun Choi