Samsung Electronics Co., Ltd.

Ji-Hyun In

Tae-sun Chung

Kwang-yoon Lee

Dong-hee Lee

Sam-hyuk Noh

Yoo-kun Cho

Hyo-jun Kim

Jong-Min Kim

Bum-soo Kim

Jong-moo Choi

Sang-Lyul Min

Jae-yong Jeong

Je-Sung Kim

Gui-Young Lee

Jae-Yong Jeong

Jong-min Kim

Bum-Soo Kim

Jin-kyu Kim

Song-ho Yoon

Myung-jin Jung

Nam-Yoon Woo

Hyo-Jun Kim

Gui-young Lee

Gui-Yong Lee

Sang-Iyul Min

Je-sung Kim

Jong-Moo Choi

A flash memory management method is provided. According to the method, when a request to write the predetermined data to a page to which data has been written is made, the predetermined data is written to a log block corresponding to a data block containing the page. When a request to write the predetermined data to the page again is received, the predetermined data is written to an empty free page in the log block. Even if the same page is requested to be continuously written to, the management method allows this to be processed in one log block, thereby improving the effectiveness in the use of flash memory resources.

Flash memory management method

Method of writing to a flash memory including data blocks and log blocks

Method of writing of writing to a flash memory including data blocks and log blocks, using a logical address having a block address portion and page identifying portion, a block address table and a page table

An apparatus for processing data of a non-volatile memory includes a non-volatile memory having a plurality of blocks, an operation processing unit which, when a write operation is requested from a user, writes data in the plurality of blocks, and a block managing unit which collectively converts the plurality of blocks, where the data is written, to a plurality of data blocks and manages statuses of the plurality of blocks to correspond to an operation process performed by the operation processing unit.

Apparatus and method of processing data of non-volatile memory using transaction block

A method for minimizing the degradation of performance upon accessing a flash memory using a logical-physical mapping scheme, and a method for efficiently storing and managing information on logical-physical mapping in a flash memory. A method for writing data in a flash memory includes determining whether a sector is empty in a physical page having a most recently written logical page number of data to be written, the offset of the sector matching that of the data to be written; if the sector is empty, writing the data in the sector to the physical page; and if the sector is not empty, selecting an empty physical page to write the data to a sector in the selected empty physical page of which the offset matches that of the data to be written and writing a logical page number for the data to the selected empty physical page.

Address mapping method and mapping information managing method for flash memory, and flash memory using the same

A data management device and a data management method for a flash memory, in which physical addresses are classified according to pages, each of which is a physical data operation unit, and a predetermined data operation is performed with respect to the classified physical addresses. The data management device and method reduce time required for the data operation in a large-block flash memory, in which a physical data operation unit is larger than a logical data operation unit. As a result, an optimal data operation can be achieved in a large-block flash memory.

Data management device and method for flash memory

A data processing apparatus and method are provided for a flash memory, wherein the data processing apparatus and method can easily determine whether data stored in the flash memory is valid. The data processing apparatus for a flash memory includes a user request unit which issues a request for performing a data operation on a predetermined logical address, a conversion unit which converts the predetermined logical address into a physical address, and a control unit which performs the data operation on the physical address and records inverted data of data written to the predetermined logical address in an index area to indicate whether the data written to the predetermined logical address is valid.

Apparatus and method for detecting data validity in flash memory

A method of re-mapping a flash memory, which minimizes the number of times the flash memory, is accessed and helps to evenly use the entire area of the flash memory, is provided. The method includes arranging a plurality of physical units yet to be mapped according to their erase count values, and sequentially mapping the physical units to a logic unit in such a manner that a physical unit having a smaller erase count value is mapped to the logic unit ahead of a physical unit having a larger erase count value.

Method of remapping flash memory

Provided are a data management apparatus and method used for a flash memory, which can guarantee predetermined response time by expecting when a user will receive a response to his or her request for performing a data operation on the flash memory. The data management apparatus includes an operation determination unit which determines operations required for performing a data operation on a flash memory, the data operation being requested by a user using a user program, an operation registration unit with which an operation list including the operations determined to be required for performing the requested data operation on the flash memory is registered, and an operation processing unit which selects one of the operations included in the operation list registered with the operation registration unit and performs the selected operation.

Data management apparatus and method for determining a response time in flash memory devices

A data recovery apparatus and method used for a flash memory, which can recover data damaged or lost when power supplied to the flash memory is cut off while data operations are being consecutively performed on at least one data stored in the flash memory. The data recovery apparatus performs a data operation at each of a plurality of consecutive logical addresses, and if the data operations performed at the logical addresses are successful, records a mark value in a last index area of a plurality of consecutive index areas respectively corresponding to the consecutive logical addresses.

Data recovery apparatus and method used for flash memory

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Seongnam-si, South Korea

Ji-Hyun In