Error detection/correction and fault detection/recovery – Data processing system error or fault handling – Reliability and availability
Reexamination Certificate
2005-01-18
2005-01-18
Le, Dieu-Minh (Department: 2114)
Error detection/correction and fault detection/recovery
Data processing system error or fault handling
Reliability and availability
C714S054000
Reexamination Certificate
active
06845472
ABSTRACT:
A system and technique for detecting data errors in a memory device. More specifically, data errors in a memory device are detected by initiating an internal READ command or cleansing operation from a set of logic which is internal to the memory system in which the memory devices reside. Rather than relying on a READ command to be issued from an external device, via a host controller, the cleansing logic initiates a cleansing routine in response to an event such as an operator instruction or a periodic schedule. By implementing the cleansing operation, the system does not rely on external READ commands to verify data integrity. Further, a monitoring device is coupled between the cleansing logic and a memory scheduler. The monitoring device provides a feed back mechanism from which to vary the frequency of certain memory requests such as the cleansing and scrubbing operations. The cleansing routine may rely on typical ECC error logging mechanisms and may be used in a RAID memory architecture. Further, the cleansing routine may be used in conjunction with other error logging and correction logic, as well as scrubbing logic.
REFERENCES:
patent: 5267242 (1993-11-01), Lavallee et al.
patent: 5313626 (1994-05-01), Jones et al.
patent: 5331646 (1994-07-01), Krueger et al.
patent: 5367669 (1994-11-01), Holland et al.
patent: 5511078 (1996-04-01), Barucchi et al.
patent: 5768560 (1998-06-01), Lieberman et al.
patent: 6076183 (2000-06-01), Espie et al.
patent: 6098132 (2000-08-01), Olarig et al.
patent: 6101614 (2000-08-01), Gonzales et al.
patent: 6223301 (2001-04-01), Santeler et al.
patent: 6279128 (2001-08-01), Arnold et al.
MacLaren John M.
Walker William J.
Hewlett--Packard Development Company, L.P.
Le Dieu-Minh
LandOfFree
Memory sub-system error cleansing does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Memory sub-system error cleansing, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Memory sub-system error cleansing will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3370637