Static information storage and retrieval – Systems using particular element – Capacitors
Reexamination Certificate
2010-03-02
2011-10-25
Le, Vu (Department: 2824)
Static information storage and retrieval
Systems using particular element
Capacitors
C365S222000, C365S230010
Reexamination Certificate
active
08045365
ABSTRACT:
A dynamic random access memory (DRAM) having DRAM cells coupled to wordlines and bitlines. In a self-refresh mode, the cells coupled with the even numbered rows retain main data previously stored therein and the assistant data, which is logically opposite to the main data, is overwritten into the cells coupled with the wordlines of the odd numbered rows. When the DRAM enters the self-refresh mode, a starting refresh address for the self-refresh mode is detected. If the detected starting refresh address does not match with a predetermined correct address set for the self-refresh operation mode, a dummy refresh cycle will be established in an entry-burst self-refresh period. During the dummy refresh cycle, a dummy refresh command is added to increment an internal row address counter that provides row addresses for self-refreshing the cells of the selected wordlines within the cell array.
REFERENCES:
patent: 5315557 (1994-05-01), Kim et al.
patent: 5583818 (1996-12-01), You et al.
patent: 5903511 (1999-05-01), Gillingham
patent: 6449182 (2002-09-01), Ooishi
patent: 6449203 (2002-09-01), Cowles et al.
patent: 6449204 (2002-09-01), Arimoto et al.
patent: 6463002 (2002-10-01), Kim et al.
patent: 6525979 (2003-02-01), Kato
patent: 6711081 (2004-03-01), Jain
patent: 6751144 (2004-06-01), Takahashi et al.
patent: 6868029 (2005-03-01), Ooishi et al.
patent: 6894941 (2005-05-01), Kurjanowicz et al.
patent: 7054224 (2006-05-01), Takahashi et al.
patent: 7158433 (2007-01-01), Riho et al.
patent: 2002/0118588 (2002-08-01), Kato
patent: 2004/0027902 (2004-02-01), Ooishi et al.
patent: 2004/0076054 (2004-04-01), Takahashi
patent: 2005/0052919 (2005-03-01), Chou
patent: 2005/0219890 (2005-10-01), Riho et al.
patent: 2005/0289294 (2005-12-01), Janzen
U.S. Appl. No. 12/341,316, Notice of Allowance dated Dec. 9, 2009.
Borden Ladner Gervais LLP
Hung Shin
Le Vu
MOSAID Technologies Incorporated
Yang Han
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