Programmable controller with CPU units and special-function...

Details Programmable controller with CPU units and special-function... Programmable controller with CPU units and special-function...

2003-06-04

2008-09-23

Chu, Gabriel L (Department: 2114)

Error detection/correction and fault detection/recovery

Data processing system error or fault handling

Reliability and availability

C714S013000

Reexamination Certificate

active

07428659

ABSTRACT:
A programmable controller includes two CPU units each having a detachably attached special-function module for carrying out a calculation process, each of the two CPU units recognizing conditions of the other CPU unit, one of them becoming an active unit and the other becoming a standby unit such that when the active unit fails and goes down the standby unit is switched to become active and resumes operations. The special-function module attached to the active CPU unit becomes an active module and carries out control processes with the active CPU unit and the other special-function module attached to the standby CPU unit becomes a standby module.

REFERENCES:
patent: 4428044 (1984-01-01), Liron
patent: 4965717 (1990-10-01), Cutts, Jr. et al.
patent: 5204952 (1993-04-01), Ayers et al.
patent: 5226152 (1993-07-01), Klug et al.
patent: 5255367 (1993-10-01), Bruckert et al.
patent: 5317726 (1994-05-01), Horst
patent: 6223304 (2001-04-01), Kling et al.
patent: 6393582 (2002-05-01), Klecka et al.
patent: 6473869 (2002-10-01), Bissett et al.
patent: 6604177 (2003-08-01), Kondo et al.
patent: 7191359 (2007-03-01), Shimamura et al.
patent: 7370232 (2008-05-01), Safford
patent: 2002/0152418 (2002-10-01), Griffin et al.
patent: 05-173986 (1993-07-01), None
patent: 06-324722 (1994-11-01), None
patent: 09-073304 (1997-03-01), None
patent: 2000-353105 (2000-12-01), None
patent: 2001-022414 (2001-01-01), None

Affiliated with

Also associated with

Rating

Programmable controller with CPU units and special-function... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Programmable controller with CPU units and special-function..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Programmable controller with CPU units and special-function... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3976214