Methods and systems for preserving dynamic random access...

Details Methods and systems for preserving dynamic random access... Methods and systems for preserving dynamic random access...

2007-05-15

2007-05-15

Beausoliel, Robert W (Department: 2113)

Error detection/correction and fault detection/recovery

Data processing system error or fault handling

Reliability and availability

C714S010000, C714S055000, C714S051000, C711S106000

Reexamination Certificate

active

10435077

ABSTRACT:
Methods and systems for preserving dynamic random access memory content in response to a hung processor condition are disclosed. In order to preserve dynamic random access memory content, a first watchdog timer is initiated and strobed at a predetermined time interval less than its timeout value. If a hung processor condition occurs and the strobing of the first watchdog timer fails, the first watchdog timer generates a non-maskable interrupt to the processor. The non-maskable interrupt triggers the processor to execute an interrupt service routine. If the processor is able to execute the interrupt service routine, the interrupt service routine controls the processor to perform a selective system reset and preserve dynamic random access memory contents. If the processor is not capable of executing the interrupt service routine, a board reset occurs and dynamic random access memory contents are cleared.

REFERENCES:
patent: 5204840 (1993-04-01), Mazur
patent: 5513319 (1996-04-01), Finch et al.
patent: 6012154 (2000-01-01), Poisner
patent: 6336174 (2002-01-01), Li et al.
patent: 6438709 (2002-08-01), Poisner
patent: 6467007 (2002-10-01), Armstrong et al.
patent: 6697973 (2004-02-01), Baumeister et al.
patent: 6829677 (2004-12-01), Attaway et al.
patent: 2006/0053350 (2006-03-01), Tsuyuno et al.
Newton, Harry, Newton's Telecom Dictionary, Feb. 2002, 18th Ed., pp. 668-669.

Affiliated with

Also associated with

Rating

Methods and systems for preserving dynamic random access... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Methods and systems for preserving dynamic random access..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Methods and systems for preserving dynamic random access... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3789390