公开(公告)号：US20180136865A1

公开(公告)日：2018-05-17

申请号：US15352037

申请日：2016-11-15

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： MICHAEL ERLIHSON ,  SHMUEL DASHEVSKY ,  ELONA EREZ ,  GUY INBAR ,  JUN JIN KONG ,  KEON SOO HA

IPC: G06F3/06 ,  G06F12/02

CPC classification number: G06F3/0626 ,  G06F3/0659 ,  G06F3/0665 ,  G06F3/0679 ,  G06F12/0246 ,  G06F12/0866 ,  G06F2212/1044 ,  G06F2212/1056 ,  G06F2212/152 ,  G06F2212/214 ,  G06F2212/466 ,  G06F2212/7201 ,  G06F2212/7203 ,  G06F2212/7208

Abstract: A memory system includes a table storing a plurality of entries, where each entry is associated with a different logical block address (LBA), a plurality of memory devices, channels, and ways, where each memory device is connected to one of the channels ways and to one of the ways, and a memory controller configured to receive an LBA and data from a host, execute a plurality of pseudo-random functions on the received LBA to generate a plurality of slot indexes, select one of the slot indexes, write the data to one of the memory devices identified by the selected one slot index, and update a corresponding one of the entries to include the selected one slot index.

公开(公告)号：US20180091174A1

公开(公告)日：2018-03-29

申请号：US15277708

申请日：2016-09-27

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： ERAN HOF ,  MOSHE TWITIO ,  GUY INBAR ,  JUN JIN KONG ,  YARON SHANY

IPC: H03M13/00 ,  G06F11/10 ,  G11C29/52 ,  H04L1/00 ,  H03M13/13

CPC classification number: H03M13/6337 ,  G06F11/1068 ,  G11C29/52 ,  H03M13/13 ,  H03M13/1515 ,  H03M13/353 ,  H04L1/0009 ,  H04L1/0041 ,  H04L1/0058 ,  H04L1/0065

Abstract: A method for storing data in a solid state device includes applying polar coding to generate channels including perfect channels, useless channels, and channels that are neither perfect nor useless. Some data is encoded using the perfect channels. A predetermined value is encoded using the useless channels. The other channels are divided into groups, depending upon a quality of each channel. Other data is encoded using the channels that are neither perfect nor useless using a different coding technique. This coding technique is applied to the same quality channels using several polar codewords, in parallel. Decoding is carried in a progressive parallel manner where the other coding technique assists the decoding of some polar codewords based on correct results from other polar codewords that were successfully decoded. The encoded data to be stored is written into the solid state device or transmitted.

公开(公告)号：US20170134048A1

公开(公告)日：2017-05-11

申请号：US14937379

申请日：2015-11-10

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： GUY INBAR ,  MOSHE TWITTO ,  ERAN HOF ,  JUN JIN KONG

IPC: H03M13/11 ,  H03M13/00

CPC classification number: H03M13/1125 ,  H03M13/1111 ,  H03M13/616 ,  H03M13/6588 ,  H03M13/6594

Abstract: A decoding method for an iterative message-passing based decoder, such as a low-density parity-check (LDPC) decoder, includes calculating syndrome information for a received word, and initializing variable nodes based on the received word. Each received bit of the received word may be represented by a Likelihood-Ratio (LR) or Log-Likelihood-Ratio (LLR) at a respective variable node. Further, the method includes iteratively updating check nodes, and updating the LRs of variable nodes using the syndrome information, determining an error vector from the LRs of the variable nodes, and determining a transmitted word, corresponding to the received word, by subtracting the error vector from the received word. The syndrome information is calculated based upon a parity check matrix.