Error detection/correction and fault detection/recovery – Pulse or data error handling – Digital data error correction
Reexamination Certificate
2011-03-01
2011-03-01
Chase, Shelly A (Department: 2112)
Error detection/correction and fault detection/recovery
Pulse or data error handling
Digital data error correction
Reexamination Certificate
active
07900120
ABSTRACT:
A DRAM device includes an ECC generator/checker that generates ECC syndromes corresponding to items of data stored in the DRAM device. The DRAM device also includes an ECC controller that causes the ECC syndromes to be stored in the DRAM device. The ECC controller also causes a flag bit having a first value to be stored in the DRAM device when a corresponding ECC syndrome is stored. The ECC controller changes the flag bit to a second value whenever the corresponding data bits are modified, this indicating that the stored syndrome no longer corresponds to the stored data. In such case, the ECC controller causes a new ECC syndrome to be generated and stored, and the corresponding flag bit is reset to the first value. The flag bits may be checked in this manner during a reduced power refresh to ensure that the stored syndromes correspond to the stored data.
REFERENCES:
patent: 4334295 (1982-06-01), Nagami
patent: 4433211 (1984-02-01), McCalmont et al.
patent: 4598402 (1986-07-01), Matsumoto et al.
patent: 4706249 (1987-11-01), Nakagawa et al.
patent: 4710934 (1987-12-01), Traynor
patent: 4766573 (1988-08-01), Takemae
patent: 4780875 (1988-10-01), Sakai
patent: 4858236 (1989-08-01), Ogasawara
patent: 4862463 (1989-08-01), Chen
patent: 4918692 (1990-04-01), Hidaka et al.
patent: 4937830 (1990-06-01), Kawashima et al.
patent: 4958325 (1990-09-01), Nakagome et al.
patent: 5033026 (1991-07-01), Tsujimoto
patent: 5056089 (1991-10-01), Furuta et al.
patent: 5127014 (1992-06-01), Raynham
patent: 5172339 (1992-12-01), Noguchi et al.
patent: 5208782 (1993-05-01), Sakuta et al.
patent: 5278796 (1994-01-01), Tillinghast et al.
patent: 5291498 (1994-03-01), Jackson et al.
patent: 5307356 (1994-04-01), Fifield
patent: 5313425 (1994-05-01), Lee et al.
patent: 5313464 (1994-05-01), Reiff
patent: 5313475 (1994-05-01), Cromer et al.
patent: 5313624 (1994-05-01), Harriman et al.
patent: 5321661 (1994-06-01), Iwakiri et al.
patent: 5331601 (1994-07-01), Parris
patent: 5335201 (1994-08-01), Walther et al.
patent: 5369651 (1994-11-01), Marisetty
patent: 5418796 (1995-05-01), Price et al.
patent: 5428630 (1995-06-01), Weng et al.
patent: 5432802 (1995-07-01), Tsuboi
patent: 5446695 (1995-08-01), Douse et al.
patent: 5448578 (1995-09-01), Kim
patent: 5450424 (1995-09-01), Okugaki et al.
patent: 5455801 (1995-10-01), Blodgett et al.
patent: 5459742 (1995-10-01), Cassidy et al.
patent: 5481552 (1996-01-01), Aldereguia et al.
patent: 5509132 (1996-04-01), Matsuda et al.
patent: 5513135 (1996-04-01), Dell et al.
patent: 5515333 (1996-05-01), Fujita et al.
patent: 5588112 (1996-12-01), Dearth et al.
patent: 5600662 (1997-02-01), Zook
patent: 5604703 (1997-02-01), Nagashima
patent: 5623506 (1997-04-01), Dell et al.
patent: 5629898 (1997-05-01), Idei et al.
patent: 5631914 (1997-05-01), Kashida et al.
patent: 5644545 (1997-07-01), Fisch
patent: 5703823 (1997-12-01), Douse et al.
patent: 5706225 (1998-01-01), Buchenrieder et al.
patent: 5712861 (1998-01-01), Inoue et al.
patent: 5732092 (1998-03-01), Shinohara
patent: 5740188 (1998-04-01), Olarig
patent: 5742554 (1998-04-01), Fujioka
patent: 5754753 (1998-05-01), Smelser
patent: 5761222 (1998-06-01), Baldi
patent: 5765185 (1998-06-01), Lambrache et al.
patent: 5784328 (1998-07-01), Irrinki et al.
patent: 5784391 (1998-07-01), Konigsburg
patent: 5808952 (1998-09-01), Fung et al.
patent: 5841418 (1998-11-01), Bril et al.
patent: 5864569 (1999-01-01), Roohparvar
patent: 5878059 (1999-03-01), Maclellan
patent: 5896404 (1999-04-01), Kellogg et al.
patent: 5909404 (1999-06-01), Schwarz
patent: 5912906 (1999-06-01), Wu et al.
patent: 5953278 (1999-09-01), McAdams et al.
patent: 5961660 (1999-10-01), Capps, Jr. et al.
patent: 5963103 (1999-10-01), Blodgett
patent: 6009547 (1999-12-01), Jaquette et al.
patent: 6009548 (1999-12-01), Chen et al.
patent: 6018817 (2000-01-01), Chen et al.
patent: 6041001 (2000-03-01), Estakhri
patent: 6041430 (2000-03-01), Yamauchi
patent: 6052815 (2000-04-01), Zook
patent: 6078543 (2000-06-01), Kim
patent: 6085283 (2000-07-01), Toda
patent: 6085334 (2000-07-01), Giles et al.
patent: 6092231 (2000-07-01), Sze
patent: 6101614 (2000-08-01), Gonzales et al.
patent: 6125467 (2000-09-01), Dixon
patent: 6134167 (2000-10-01), Atkinson
patent: 6137739 (2000-10-01), Kim
patent: 6166980 (2000-12-01), Chun
patent: 6178537 (2001-01-01), Roohparvar
patent: 6199139 (2001-03-01), Katayama et al.
patent: 6212118 (2001-04-01), Fujita
patent: 6212631 (2001-04-01), Springer et al.
patent: 6216246 (2001-04-01), Shau
patent: 6216247 (2001-04-01), Creta et al.
patent: 6219807 (2001-04-01), Ebihara et al.
patent: 6223309 (2001-04-01), Dixon et al.
patent: 6233717 (2001-05-01), Choi
patent: 6262925 (2001-07-01), Yamasaki
patent: 6279072 (2001-08-01), Williams et al.
patent: 6310825 (2001-10-01), Furuyama
patent: 6324119 (2001-11-01), Kim
patent: 6349068 (2002-02-01), Takemae et al.
patent: 6349390 (2002-02-01), Dell et al.
patent: 6353910 (2002-03-01), Carnevale et al.
patent: 6397290 (2002-05-01), Williams et al.
patent: 6397357 (2002-05-01), Cooper
patent: 6397365 (2002-05-01), Brewer et al.
patent: 6404687 (2002-06-01), Yamasaki
patent: 6426908 (2002-07-01), Hidaka
patent: 6438066 (2002-08-01), Ooishi et al.
patent: 6442644 (2002-08-01), Gustavson et al.
patent: 6457153 (2002-09-01), Yamamoto et al.
patent: 6484246 (2002-11-01), Tsuchida et al.
patent: 6487136 (2002-11-01), Hidaka
patent: 6510537 (2003-01-01), Lee
patent: 6518595 (2003-02-01), Lee
patent: 6526537 (2003-02-01), Kishino
patent: 6549460 (2003-04-01), Nozoe et al.
patent: 6556497 (2003-04-01), Cowles et al.
patent: 6557072 (2003-04-01), Osborn
patent: 6560155 (2003-05-01), Hush
patent: 6570803 (2003-05-01), Kyung
patent: 6584543 (2003-06-01), Williams et al.
patent: 6591394 (2003-07-01), Lee et al.
patent: 6594796 (2003-07-01), Chiang
patent: 6601211 (2003-07-01), Norman
patent: 6603694 (2003-08-01), Frankowsky et al.
patent: 6603696 (2003-08-01), Janzen
patent: 6603697 (2003-08-01), Janzen
patent: 6603698 (2003-08-01), Janzen
patent: 6609236 (2003-08-01), Watanabe et al.
patent: 6614698 (2003-09-01), Ryan et al.
patent: 6618281 (2003-09-01), Gordon
patent: 6618314 (2003-09-01), Fiscus et al.
patent: 6618319 (2003-09-01), Ooishi et al.
patent: 6628558 (2003-09-01), Fiscus
patent: 6636444 (2003-10-01), Uchida et al.
patent: 6636446 (2003-10-01), Lee et al.
patent: 6646942 (2003-11-01), Janzen
patent: 6662333 (2003-12-01), Zhang et al.
patent: 6665231 (2003-12-01), Mizuno et al.
patent: 6678860 (2004-01-01), Lee
patent: 6697926 (2004-02-01), Johnson et al.
patent: 6697992 (2004-02-01), Ito et al.
patent: 6701480 (2004-03-01), Karpuszka et al.
patent: 6704230 (2004-03-01), DeBrosse et al.
patent: 6715104 (2004-03-01), Imbert de Tremiolles et al.
patent: 6715116 (2004-03-01), Lester et al.
patent: 6721223 (2004-04-01), Matsumoto et al.
patent: 6735726 (2004-05-01), Muranaka et al.
patent: 6751143 (2004-06-01), Morgan et al.
patent: 6754858 (2004-06-01), Borkenhagen et al.
patent: 6775190 (2004-08-01), Setogawa
patent: 6778457 (2004-08-01), Burgan
patent: 6781908 (2004-08-01), Pelley et al.
patent: 6788616 (2004-09-01), Takahashi
patent: 6789209 (2004-09-01), Suzuki et al.
patent: 6792567 (2004-09-01), Laurent
patent: 6795362 (2004-09-01), Nakai et al.
patent: 6807108 (2004-10-01), Maruyama et al.
patent: 6810449 (2004-10-01), Barth et al.
patent: 6819589 (2004-11-01), Aakjer
patent: 6819624 (2004-11-01), Acharya et al.
patent: 6834022 (2004-12-01), Derner et al.
patent: 6920523 (2005-07-01), Le et al.
patent: 6934199 (2005-08-01), Johnson et al.
patent: 6940773 (2005-09-01), Poechmueller
patent: 6940774 (2005-09-01), Perner
patent: 6944074 (2005-09-01), Chung et al.
patent: 6965537 (2005-11-01), Klein et al.
patent: 7002397 (2006-02-01), Kubo et al.
patent: 7027337 (2006-04-01), Johnson et al.
patent: 7051260 (2006-05-01), Ito et al.
patent: 7095669 (2006-08-01), Oh
patent: 7096407 (2006-08-01), Olarig
patent: 7099221 (2006-08-01), Klein
patent: 7116602 (2006-10-01), Klein
patent: 7117420 (2006-10-01), Yeung et al.
patent: 7149141 (2006-12-01), Johnson et al.
patent: 7167403 (2007-01-01), Riho et al.
Pawlowski J. Thomas
Schreck John
Chase Shelly A
Dorsey & Whitney LLP
Micro)n Technology, Inc.
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