| Patent application number | Description | Published |
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| 20100253555 | ENCODING METHOD AND SYSTEM, DECODING METHOD AND SYSTEM - A decoder, an encoder, a decoding method and an encoding method are provided. The encoding method includes receiving data; generating a set of first codewords by applying a first encoding process on the received data; and performing a second encoding process on a folded version of each first codeword to provide a set of second codewords, wherein a folded version of a first codeword is representative of a storage of the first codeword in a two dimensional memory space, wherein the second codeword comprises redundancy bits. | 10-07-2010 |
| 20110051521 | FLASH MEMORY MODULE AND METHOD FOR PROGRAMMING A PAGE OF FLASH MEMORY CELLS - A flash memory module and a method for programming a page of flash memory cells, the method includes: receiving a cycle count indication indicative of a number of program cycles of the page of memory cells; setting a value of a programming parameter of a programming operation based on the cycle count indication; and programming at least one flash memory cell of the page of flash memory cells by performing the programming operation. | 03-03-2011 |
| 20110055461 | SYSTEMS AND METHODS FOR PRE-EQUALIZATION AND CODE DESIGN FOR A FLASH MEMORY - A system, computer readable program, and method for programming flash memory, the method includes: providing multiple pairs of most significant bit (MSB) page uncoded bit error rates (UBERs) and least significant bit (LSB) page UBERs; selecting a selected MSB page code rate and a selected LSB page code rate so that a selected MSB page UBER associated with the selected MSB page code rate and a selected LSB page UBER associated with the selected LSB page code rate support a highest average UBER out of the multiple pairs of MSB page UBERs and LSB page UBERs, wherein the selected MSB page code rate and the selected LSB page code rate are obtainable under a desired code rate constraint; and determining an encoding and programming scheme that may be based on the selected MSB page UBER, the selected MSB code rate, the selected LSB page UBER and the selected LSB code rate. | 03-03-2011 |
| 20110096612 | METHOD, SYSTEM, AND COMPUTER READABLE MEDIUM FOR READING AND PROGRAMMING FLASH MEMORY CELLS - A system, method and computer readable medium for programming and reading flash memory cells. Respective first and second read operations may be performed while supplying respective first and second bias voltage to multiple flash memory cells, to provide respective first and second read results, where the first bias voltage may be higher then the second bias voltage, and providing a read outcome that may be responsive to the first read results and to the second read results. A programming method may include performing first and second programming operations while supplying respective first and second bias voltages to multiple flash memory cells. The programming method may further include performing the first programming operation while programming information mapped to a highest least significant bit positive lobe, and performing the second programming operation while programming information mapped to at least one other least significant bit positive lobe. | 04-28-2011 |
| 20110119562 | SYSTEM AND METHOD FOR UNCODED BIT ERROR RATE EQUALIZATION VIA INTERLEAVING - A device, method, and computer readable medium for programming a codeword are presented. The method includes writing a first codeword portion to portions of nonvolatile memory rows, and writing a second codeword portion to portions of nonvolatile memory rows, wherein the first group of memory rows and the second group belong to non-overlapping groups. The device includes multiple nonvolatile memory rows, and a controller receiving a codeword comprising a first codeword portion and a second codeword portion. The controller writing the first codeword portion to portions of nonvolatile memory rows, and writing the second codeword portion to portions of nonvolatile memory rows, wherein the first group of nonvolatile memory rows differs and the second group of nonvolatile memory rows belong to non-overlapping groups, and the first and second groups of memory rows belong to multiple rows. A computer readable medium having stored thereon instructions performing methods described herein. | 05-19-2011 |
| 20110214029 | SYSTEM AND METHOD FOR MULTI-DIMENSIONAL DECODING - A system and method for soft decoding data. A plurality of candidate error corrections may be generated to correct one or more data bits having soft bit information. Each candidate error correction may define suggested changes to the data bits and is associated with a soft bit value. The soft bit values associated the plurality of candidate error corrections may be mapped to a uniform scale, for example, a uniform finite or integer grid. The plurality of candidate error corrections may be ordered to have combined associated mapped values in a monotonically non-decreasing order. One or more of the plurality of candidate error corrections may be soft decoded in the order of the associated mapped values by a decoding operation for each candidate error correction therein with the associated non-mapped soft bit values. | 09-01-2011 |
| 20110214039 | SYSTEM AND METHOD FOR MULTI-DIMENSIONAL DECODING - A system and method for decoding data. Multi-dimensional encoded data may be received that potentially has errors. The multi-dimensional encoded data may encode each input bit in a set of input bits multiple times in multiple different dimensions to generate encoded bits. The encoded bits may be decoded in at least one of the multiple dimensions. If one or more errors are detected in a plurality of encoded bits in the at least one of the multiple dimensions, an intersection sub-set of the encoded data may be decoded that includes data encoding the same input bits encoded by the plurality of encoded bits in at least a second dimension of the multiple dimensions. The values of the input bits by decoding the intersection sub-set may be changed. | 09-01-2011 |
| 20120001778 | SYSTEM AND METHOD FOR MULTI-DIMENSIONAL ENCODING AND DECODING - A system and method for decoding multi-dimensional encoded data. A set of multi-dimensional encoded data may be received encoding each input bit in a set of input bits by multiple different component codes in multiple different encoding dimensions. The multi-dimensional data may potentially have errors. A map may be used to locate each set of intersection bits that encode the same input bit by multiple unsolved component codes. The unsolved component codes may be decoded using one or a plurality of tested error correction hypotheses that yields a decoding success, where each hypothesis correcting a different set of intersection bits for a different input bit. The successful hypothesis may be applied for correcting the multi-dimensional encoded data. | 01-05-2012 |
| 20120005554 | SYSTEM AND METHOD FOR MULTI-DIMENSIONAL ENCODING AND DECODING - A system and method for using a cyclic redundancy check (CRC) to evaluate error corrections. A set of data and initial CRC values associated therewith may be received. The set of data by changing a sub-set of the data may be corrected. Intermediate CRC values may be computed for the entire uncorrected set of data in parallel with said correcting. Supplemental CRC values may be computed for only the sub-set of changed data after said correcting. The intermediate and supplemental CRC values may be combined to generate CRC values for the entire corrected set of data. The validity of the corrected set of data may be evaluated by comparing the combined CRC values with the initial CRC values. | 01-05-2012 |
| 20120005558 | SYSTEM AND METHOD FOR DATA RECOVERY IN MULTI-LEVEL CELL MEMORIES - A system and method are provided for data recovery in a multi-level cell memory device. One or more bits may be programmed sequentially in one or more respective levels of multi-level cells in the memory device. An interruption of programming a subsequent bit in a subsequent second or greater level of the multi-level cells may be detected. Data may be recovered from the multi-level cells defining the one or more bits programmed preceding the programming interruption of the second or greater level. | 01-05-2012 |
| 20120005560 | SYSTEM AND METHOD FOR MULTI-DIMENSIONAL ENCODING AND DECODING - A system and method is provided for decoding a set of bits using a plurality of hypotheses, for example, each independently tested on-the-fly. Initial bit states and associated reliability metrics may be received for the set of bits. A current hypothesis may be decoded for correcting the set of bits, wherein the current hypothesis defines different bit states and associated reliability metrics for the set of bits. If decoding the current hypothesis is not successful, a subsequently ordered hypothesis may be decoded, wherein the hypotheses are ordered such that their associated reliability metric is a monotonically non-decreasing sequence. Decoding may proceed iteratively until the current hypothesis is successful. | 01-05-2012 |
