Invention Grant
- Patent Title: Multi-write coding of non-volatile memories
- Patent Title (中): 非易失性存储器的多写编码
-
Application No.: US12631470Application Date: 2009-12-04
-
Publication No.: US08176234B2Publication Date: 2012-05-08
- Inventor: Michele M. Franceschini , Ashish Jagmohan , Luis A. Lastras-Montano
- Applicant: Michele M. Franceschini , Ashish Jagmohan , Luis A. Lastras-Montano
- Applicant Address: US NY Armonk
- Assignee: International Business Machines Corporation
- Current Assignee: International Business Machines Corporation
- Current Assignee Address: US NY Armonk
- Agency: Cantor Colburn LLP
- Agent Daniel Morris
- Main IPC: G06F12/00
- IPC: G06F12/00

Abstract:
Multi-write coding of non-volatile memories including a method that receives write data, and a write address of a memory page. The memory page is in either an erased state or a previously written state. If the memory page is in the erased state: selecting a first codeword from a code such that the first codeword encodes the write data and is consistent with a target set of distributions of electrical charge levels in the memory page; and writing the first codeword to the memory page. If the memory page is in the previously written state: selecting a coset from a linear code such that the coset encodes the write data and includes one or more words that are consistent with previously written content of the memory page; selecting a subsequent codeword from the one or more words in the coset; and writing the subsequent codeword to the memory page.
Public/Granted literature
- US20110138104A1 MULTI-WRITE CODING OF NON-VOLATILE MEMORIES Public/Granted day:2011-06-09
Information query