Patent application number | Description | Published |
20120216096 | Memory Device and Memory System - A memory device and a memory system, the memory system including a data compressor for generating compressed data by compressing program data in a first unit, and an error correction block generator for dividing the compressed data in a second unit to obtain a plurality of pieces of normal data, and generating error correction blocks for correcting errors of the plurality of pieces of normal data, wherein each of the error correction blocks comprises the normal data, invalid data having a size corresponding to the size of the normal data, and parities for the normal data and the invalid data. | 08-23-2012 |
20120242517 | METHODS OF COMPRESSING DATA IN STORAGE DEVICE - At least one example embodiment discloses a method of compressing data in a storage device. The method includes determining a codeword length of a symbol using a first table indicating a relationship between a number of occurrences of the symbol in received data and the codeword length, determining a codeword having the codeword length for the symbol, and generating compressed data of the received data, the generating including converting the symbol into the codeword. | 09-27-2012 |
20130268724 | SSD WITH RAID CONTROLLER AND PROGRAMMING METHOD - A solid state drive (SSD) includes non-volatile memory devices and a RAID controller. Each of the non-volatile memory devices includes a memory cell array having a plurality of physical pages. The RAID controller performs a parity operation on 1st through (N−1)th physical page data to generate Nth physical page data, determines a physical page group including 1st through Nth physical pages that are selected from the 1st through Nth non-volatile memory devices, respectively, such that at least two of the 1st through Nth physical pages have different bit error rates from each other, and stores the 1st through Nth physical page data in the 1st through Nth physical pages, respectively. | 10-10-2013 |
20140108362 | DATA COMPRESSION APPARATUS, DATA COMPRESSION METHOD, AND MEMORY SYSTEM INCLUDING THE DATA COMPRESSION APPARATUS - Provided are data compression method, data compression apparatus, and memory system. The data compression method includes receiving input data and generating a hash key for the input data, searching a hash table with the generated hash key, and if it is determined that the input data is a hash hit, compressing the input data using the hash table; and searching a cache memory with the input data, and if it is determined that the input data is a cache hit, compressing the input data using the cache memory. | 04-17-2014 |
20140189279 | METHOD OF COMPRESSING DATA AND DEVICE FOR PERFORMING THE SAME - A data compression method includes receiving an input data stream including a previous data block and a current data block, and executing a first comparison of a part of the previous data block with part of a previous reference data block, and a second comparison of the current data block with a current reference data block, where the first and second comparisons are executed in parallel. The method further includes selectively, based on results of the first and second comparisons, outputting the current data block or compressing an extended data block, where the extended data block includes the part of the previous data block and the current data block. | 07-03-2014 |
20140195702 | METHOD OF OPERATING DATA COMPRESSION CIRCUIT AND DEVICES TO PERFORM THE SAME - A method of operating a data compression circuit includes receiving and storing a plurality of data blocks until a cache is full and writing the data blocks that have been stored in the cache to a buffer memory when the cache is full. The method also includes performing forced literal/literal encoding on each of the data blocks regardless of repetitiveness of each data block when the cache is full. | 07-10-2014 |
20150149490 | DATA STORAGE DEVICE HAVING INTERNAL HARDWARE FILTER, DATA STORAGE METHOD AND DATA STORAGE SYSTEM - An all-in-one data storage device includes a secondary memory providing read data in response to a read command, an internal hardware filter that filters the first read data according to filtering condition data in order to output filtered data, a primary memory, a host controller, and a memory controller that stores the filtered data in the primary memory and thereafter communicates the filtered data to the host controller. | 05-28-2015 |
20150149789 | MEMORY SYSTEM, HOST SYSTEM, AND METHOD OF PERFORMING WRITE OPERATION IN MEMORY SYSTEM - A write operation is performed in a memory system by encoding, in the memory system, original data transmitted from a host system, according to a first type of host command, to produce an encoding result, transmitting information about the encoding result to the host system after the encoding, and writing the encoding result or the original data into a nonvolatile memory device, according to a second host command, wherein the second host command is transmitted from the host system based on the information about the encoding result. | 05-28-2015 |
20150149852 | MEMORY DEVICE AND MEMORY SYSTEM - A memory device and a memory system, the memory system including a data compressor for generating compressed data by compressing program data in a first unit, and an error correction block generator for dividing the compressed data in a second unit to obtain a plurality of pieces of normal data, and generating error correction blocks for correcting errors of the plurality of pieces of normal data, wherein each of the error correction blocks comprises the normal data, invalid data having a size corresponding to the size of the normal data, and parities for the normal data and the invalid data. | 05-28-2015 |