Flexible and area efficient column redundancy for...

Details Flexible and area efficient column redundancy for... Flexible and area efficient column redundancy for...

2007-01-03

2008-07-29

Luu, Pho M. (Department: 2824)

Static information storage and retrieval

Read/write circuit

Bad bit

C365S185050, C365S185090, C365S185170

Reexamination Certificate

active

07405985

ABSTRACT:
A non-volatile memory wherein bad columns in the array of memory cells can be removed is described. Additionally, substitute redundant columns can replace the removed columns. Both of these processes are performed on the memory in a manner that is externally transparent and, consequently, need not be managed externally by the host or controller to which the memory is attached. An inventory of the bad columns can be maintained on the memory. At power up, the list of bad columns is used to fuse out the bad columns. The memory may also contain a number of redundant columns that can be used to replace the bad columns.

REFERENCES:
patent: 3710348 (1973-01-01), Craft
patent: 3895360 (1975-07-01), Cricchi et al.
patent: 4034356 (1977-07-01), Howley et al.
patent: 4720815 (1988-01-01), Ogawa
patent: 4757477 (1988-07-01), Nagayama et al.
patent: 5095344 (1992-03-01), Harari
patent: 5172338 (1992-12-01), Mehrotra et al.
patent: 5200959 (1993-04-01), Gross et al.
patent: 5270979 (1993-12-01), Harari et al.
patent: 5297029 (1994-03-01), Nakai et al.
patent: 5315541 (1994-05-01), Harari et al.
patent: 5380672 (1995-01-01), Yuan et al.
patent: 5386390 (1995-01-01), Okitaka
patent: 5428621 (1995-06-01), Mehrotra et al.
patent: 5430679 (1995-07-01), Hiltebeitel et al.
patent: 5430859 (1995-07-01), Norman et al.
patent: 5432741 (1995-07-01), Devore et al.
patent: 5442748 (1995-08-01), Chang et al.
patent: 5479370 (1995-12-01), Furuyama et al.
patent: 5485425 (1996-01-01), Iwai et al.
patent: 5602987 (1997-02-01), Harari et al.
patent: 5642312 (1997-06-01), Harari
patent: 5657332 (1997-08-01), Auclair et al.
patent: 5663901 (1997-09-01), Wallace et al.
patent: 5712180 (1998-01-01), Guterman et al.
patent: 5726947 (1998-03-01), Yamazaki et al.
patent: 5783958 (1998-07-01), Lysinger
patent: 5848009 (1998-12-01), Lee et al.
patent: 5862080 (1999-01-01), Harari et al.
patent: 5890192 (1999-03-01), Lee et al.
patent: 6038184 (2000-03-01), Naritake
patent: 6091666 (2000-07-01), Arase et al.
patent: 6151248 (2000-11-01), Harari et al.
patent: 6222762 (2001-04-01), Guterman et al.
patent: 6230233 (2001-05-01), Lofgren et al.
patent: 6252800 (2001-06-01), Chida
patent: 6256230 (2001-07-01), Miwa et al.
patent: 6426893 (2002-07-01), Conley et al.
patent: 6480423 (2002-11-01), Toda et al.
patent: 6512263 (2003-01-01), Yuan et al.
patent: 6522580 (2003-02-01), Chen et al.
patent: 6560146 (2003-05-01), Cernea
patent: 6594177 (2003-07-01), Matarrese et al.
patent: 6771536 (2004-08-01), Li et al.
patent: 6813184 (2004-11-01), Lee
patent: 6822911 (2004-11-01), Cernea
patent: 6853596 (2005-02-01), Cheung
patent: 6862217 (2005-03-01), Kawabata
patent: 6891753 (2005-05-01), Cernea
patent: 6983428 (2006-01-01), Cernea
patent: 6990018 (2006-01-01), Tanaka et al.
patent: 7023736 (2006-04-01), Cernea et al.
patent: 7027330 (2006-04-01), Park
patent: 7057939 (2006-06-01), Boroson et al.
patent: 7110294 (2006-09-01), Kawai
patent: 7170802 (2007-01-01), Cernea et al.
patent: 2003/0016182 (2003-01-01), Lohr
patent: 2003/0161182 (2003-08-01), Li et al.
patent: 2003/0223274 (2003-12-01), Cernea
patent: 2004/0057283 (2004-03-01), Cernea
patent: 2004/0057288 (2004-03-01), Kawabata
patent: 2004/0060031 (2004-03-01), Cernea
patent: 2004/0109357 (2004-06-01), Cernea et al.
patent: 61292747 (1986-12-01), None
patent: 01128297 (1989-05-01), None
patent: 06150666 (1994-05-01), None
patent: WO 03/025939 (2003-03-01), None
patent: WO 2005/066975 (2005-07-01), None
International Search Report and Written Opinion for PCT/US2004/042990, mailed May 3, 2005, 13 pages.
EPO, “Examiner's Report,” mailed in related European Patent Application No. 04 815 107.0 on Apr. 19, 2007.

Affiliated with

Also associated with

Rating

Flexible and area efficient column redundancy for... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Flexible and area efficient column redundancy for..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Flexible and area efficient column redundancy for... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3972069