Static information storage and retrieval – Floating gate – Disturbance control
Reexamination Certificate
2011-03-29
2011-03-29
Phung, Anh (Department: 2824)
Static information storage and retrieval
Floating gate
Disturbance control
C365S185240
Reexamination Certificate
active
07916533
ABSTRACT:
Program disturb is reduced in a non-volatile storage system during a programming operation by determining a susceptibility of a set of storage elements to program disturb and taking a corresponding precautionary measure, if needed, to reduce the likelihood of program disturb occurring. During programming of a lower page of data, a natural threshold voltage distribution of the set of storage elements is determined by tracking storage elements which are programmed to a particular state, and determining how many program pulses are need for a number N1and a number N2>N1of the storage elements to reach the particular state. Temperature and word line position can also be used to determine the susceptibility to program disturb. A precautionary measure can involve using a higher pass voltage, or abandoning programming of an upper page of data or an entire block. In some cases, programming continues with no precautionary measure.
REFERENCES:
patent: 5859795 (1999-01-01), Rolandi
patent: 6456528 (2002-09-01), Chen
patent: 6560152 (2003-05-01), Cernea
patent: 6634004 (2003-10-01), Yamada
patent: 6717847 (2004-04-01), Chen
patent: 6801454 (2004-10-01), Wang
patent: 7170788 (2007-01-01), Wan et al.
patent: 7177199 (2007-02-01), Chen
patent: 7180775 (2007-02-01), Meir
patent: 7193901 (2007-03-01), Ruby
patent: 7366022 (2008-04-01), Li
patent: 7447086 (2008-11-01), Wan et al.
patent: 7468911 (2008-12-01), Lutze et al.
patent: 2005/0083735 (2005-04-01), Chen et al.
patent: 2007/0242524 (2007-10-01), Hemink
patent: 2008/0175064 (2008-07-01), Wang
patent: 2008/0198651 (2008-08-01), Kim
patent: 2008/0198665 (2008-08-01), Mokhlesi
patent: 2008/0279008 (2008-11-01), Dong et al.
patent: 2009/0067240 (2009-03-01), Roohparvar
patent: 2009/0129146 (2009-05-01), Sarin et al.
patent: 2009/0141557 (2009-06-01), Fujiu
patent: 1964127 (2008-09-01), None
patent: 2007078793 (2007-07-01), None
International Search Report and the Written Opinion dated Oct. 4, 2010, International Appln. No. PCT/US2010/037842 filed Jun. 8, 2010.
Dong Yingda
Hsu Cynthia
Phung Anh
SanDisk Corporation
Vierra Magen Marcus & DeNiro LLP
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