Static information storage and retrieval – Read/write circuit – Bad bit
Reexamination Certificate
2006-05-30
2006-05-30
Le, Vu A. (Department: 2824)
Static information storage and retrieval
Read/write circuit
Bad bit
C365S189050
Reexamination Certificate
active
07054207
ABSTRACT:
A system and method for selecting redundant rows and columns of memory devices includes a column select steering circuit to couple column select signals from a column address decoder to an array of memory cells. The system and method also includes a fuse banks for programming respective addresses of up to two defective columns that are to be repaired. The programmed addresses are applied to a defective column decoder that determines which column select signal(s) should be shifted downwardly and which column select signal(s) should be shifted upwardly. The column select steering circuit responds to signals from the defective column decoder to shift the column select signals downwardly or upwardly. The column select signal for the lowest column is shifted downwardly to a redundant column, and the column select signal for the highest column is shifted upwardly to a redundant column.
REFERENCES:
patent: 5495447 (1996-02-01), Butler et al.
patent: 5577050 (1996-11-01), Bair et al.
patent: 5845315 (1998-12-01), Cutter
patent: 5848009 (1998-12-01), Lee et al.
patent: 5953269 (1999-09-01), Manning
patent: 5959903 (1999-09-01), Chen et al.
patent: 6055204 (2000-04-01), Bosshart
patent: 6097644 (2000-08-01), Shirley
patent: 6108251 (2000-08-01), Manning
patent: 6172916 (2001-01-01), Ooishi
patent: 6181614 (2001-01-01), Aipperspach et al.
patent: 6195762 (2001-02-01), Shore
patent: 6199177 (2001-03-01), Blodgett
patent: 6205063 (2001-03-01), Aipperspach et al.
patent: 6223248 (2001-04-01), Bosshart
patent: 6243320 (2001-06-01), Hamamoto et al.
patent: 6272056 (2001-08-01), Ooishi
patent: 6307795 (2001-10-01), Blodgett
patent: 6310804 (2001-10-01), Waller et al.
patent: 6314030 (2001-11-01), Keeth
patent: 6320804 (2001-11-01), Dähn
patent: 6331956 (2001-12-01), Ooishi et al.
patent: 6333892 (2001-12-01), Hamamoto et al.
patent: 6366508 (2002-04-01), Agrawal et al.
patent: 6366509 (2002-04-01), Shirley
patent: 6381174 (2002-04-01), Roohparvar et al.
patent: 6385100 (2002-05-01), Noda et al.
patent: 6393504 (2002-05-01), Leung et al.
patent: 6438064 (2002-08-01), Ooishi
patent: 6442084 (2002-08-01), Keeth
patent: 6459630 (2002-10-01), Nakayama et al.
patent: 6477662 (2002-11-01), Beffa et al.
patent: 6507524 (2003-01-01), Agrawal et al.
patent: 6519192 (2003-02-01), Ooishi
patent: 6521958 (2003-02-01), Forbes et al.
patent: 6531339 (2003-03-01), King et al.
patent: 6535436 (2003-03-01), Brady
patent: 6538938 (2003-03-01), Fister
patent: 6552937 (2003-04-01), Ladner et al.
patent: 6567323 (2003-05-01), Pitts et al.
patent: 6587386 (2003-07-01), Blodgett
patent: 6621751 (2003-09-01), Abedifard et al.
patent: 6668345 (2003-12-01), Ooishi et al.
patent: 6671834 (2003-12-01), Zhu et al.
patent: 6700821 (2004-03-01), Forbes et al.
patent: 6711056 (2004-03-01), Abedifard et al.
patent: 6724670 (2004-04-01), Jones et al.
patent: 6725403 (2004-04-01), Schmoelz
Hargan Ebrahim H.
Keeth Brent
Manning Troy A.
Martin Chris G.
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