Error detection/correction and fault detection/recovery – Pulse or data error handling – Digital data error correction
Reexamination Certificate
2011-03-08
2011-03-08
Baderman, Scott T (Department: 2112)
Error detection/correction and fault detection/recovery
Pulse or data error handling
Digital data error correction
Reexamination Certificate
active
07904788
ABSTRACT:
Data is read from a nonvolatile memory array using one or more read voltages that are adjusted during memory life. Programming target voltages and read voltages may be adjusted together over memory life to map memory states to an increasingly wide threshold window. Individual memory states are mapped to sub-ranges that are made wider, reducing errors.
REFERENCES:
patent: 5043940 (1991-08-01), Harari
patent: 5070032 (1991-12-01), Yuan et al.
patent: 5095344 (1992-03-01), Harari
patent: 5172338 (1992-12-01), Mehrotra et al.
patent: 5313421 (1994-05-01), Guterman et al.
patent: 5315541 (1994-05-01), Harari et al.
patent: 5343063 (1994-08-01), Yuan et al.
patent: 5532962 (1996-07-01), Auclair et al.
patent: 5570315 (1996-10-01), Tanaka et al.
patent: 5657332 (1997-08-01), Auclair et al.
patent: 5661053 (1997-08-01), Yuan
patent: 5774397 (1998-06-01), Endoh et al.
patent: 5909449 (1999-06-01), So et al.
patent: 5930167 (1999-07-01), Lee et al.
patent: 6046935 (2000-04-01), Takeuchi et al.
patent: 6222762 (2001-04-01), Guterman et al.
patent: 6266276 (2001-07-01), Odani
patent: 6339546 (2002-01-01), Katayama et al.
patent: 6397364 (2002-05-01), Barkan
patent: 6456528 (2002-09-01), Chen
patent: 6467062 (2002-10-01), Barkan
patent: 6469931 (2002-10-01), Ban et al.
patent: 6522580 (2003-02-01), Chen et al.
patent: 6674385 (2004-01-01), Micheloni et al.
patent: 6751766 (2004-06-01), Guterman et al.
patent: 6785164 (2004-08-01), Gonzalez et al.
patent: 6873549 (2005-03-01), Khalid et al.
patent: 6894926 (2005-05-01), Guterman et al.
patent: 6925007 (2005-08-01), Harari et al.
patent: 6941412 (2005-09-01), Gongwer et al.
patent: 6952365 (2005-10-01), Gonzalez et al.
patent: 6977844 (2005-12-01), Guterman et al.
patent: 6983428 (2006-01-01), Cernea
patent: 7012835 (2006-03-01), Gonzalez et al.
patent: 7035146 (2006-04-01), Hemink et al.
patent: 7088621 (2006-08-01), Guterman et al.
patent: 7092290 (2006-08-01), Hemink
patent: 7388781 (2008-06-01), Litsyn et al.
patent: 2005/0013171 (2005-01-01), Ban et al.
patent: 2005/0204212 (2005-09-01), Noguchi et al.
patent: 2005/0213393 (2005-09-01), Lasser
patent: 2006/0101193 (2006-05-01), Murin
patent: 2007/0076487 (2007-04-01), Takeuchi et al.
patent: 2007/0086239 (2007-04-01), Litsyn et al.
patent: 2007/0089034 (2007-04-01), Litsyn et al.
patent: 2007/0124652 (2007-05-01), Litsyn et al.
patent: 2007/0150790 (2007-06-01), Gross et al.
patent: 2007/0150791 (2007-06-01), Gross et al.
patent: 2007/0208905 (2007-09-01), Litsyn et al.
patent: 2007/0266295 (2007-11-01), Conley
patent: 2007/0266296 (2007-11-01), Conley
patent: 2007/0283227 (2007-12-01), Sharon et al.
patent: 2008/0010581 (2008-01-01), Alrod et al.
patent: 2008/0082897 (2008-04-01), Brandman et al.
patent: 2008/0092014 (2008-04-01), Brandman et al.
patent: 2008/0092015 (2008-04-01), Brandman et al.
patent: 2008/0092026 (2008-04-01), Brandman et al.
patent: 2008/0109702 (2008-05-01), Brandman
patent: 2008/0109703 (2008-05-01), Brandman
patent: 2008/0123420 (2008-05-01), Brandman
patent: 0 802 540 (1997-10-01), None
patent: 2008/057822 (2008-05-01), None
U.S. Appl. No. 11/383,401, filed May 15, 2006, Conley.
U.S. Appl. No. 11/383,405, filed May 15, 2006, Conley.
U.S. Appl. No. 11/536,286, filed Sep. 28, 2006, Brandman et al.
U.S. Appl. No. 11/536,327, filed Sep. 28, 2006, Brandman et al.
U.S. Appl. No. 11/536,347, filed Sep. 28, 2006, Brandman et al.
U.S. Appl. No. 11/536,372, filed Sep. 28, 2006, Brandman et al.
U.S. Appl. No. 11/556,626, filed Nov. 3, 2006, Brandman et al.
U.S. Appl. No. 11/556,632, filed Nov. 3, 2006, Brandman.
U.S. Appl. No. 11/556,636, filed Nov. 3, 2006, Brandman.
“Noisy Channel Coding Theorem”, Wikipedia, http://en.wikipedia.org/wiki/Shannon%27s—theorem, downloaded Mar. 23, 2006, 3 pages.
“Convolutional Code”, Wikipedia, http://en.wikipedia.org/wiki/Convolutional—code, downloaded Mar. 23, 2006, 2 pages.
“Turbo Code”, Wikipedia, http://en.wikipedia.org/wiki/Turbo—code, downloaded Mar. 23, 2006, 4 pages.
Chip Fleming, “A Tutorial on Convolutional Coding with Viterbi Decoding,” http://home.netcom.com/˜chip.f/viterbi/tutorial.html, dated Jan. 31, 2003, downloaded Mar. 23, 2006, 5 pages.
“Error Correcting Codes”, http://www.dcs.ed.ac.uk/home/stg/pub/E/ecc.html, downloaded Mar. 18, 2005, 2 pages.
Bernard Sklar, “Fundamentals of Turbo Codes,” Prentice Hall, Mar. 15, 2002, 30 pages.
R.Y.S. Tee et al., “Generalized Low-Density Parity-Check Coding Aided Multilevel Codes,” IEEE, 2006, 5 pages.
PCT Invitation to Pay Additional Fees mailed Sep. 4, 2008 in International Application No. PCT/US2007/082831.
PCT International Search Report and Written Opinion mailed Nov. 13, 2008 in International Application No. PCT/US2007/082831.
USPTO Office Action mailed Jun. 4, 2008 in U.S. Appl. No. 11/556,626.
USPTO Office Action mailed Oct. 9, 2008 in U.S. Appl. No. 11/556,626.
USPTO Notice of Allowance mailed Mar. 9, 2009 in U.S. Appl. No. 11/556,626.
Brandman Yigal
Conley Kevin M.
Ahmed Enam
Baderman Scott T
SanDisk Corporation
Weaver Austin Villeneuve & Sampson LLP
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