Excavating
Patent
1989-02-03
1991-02-19
Atkinson, Charles E.
Excavating
371 681, G06F 1118
Patent
active
049950401
ABSTRACT:
A fault tolerant, fail-active computer system comprises a Redundancy Management Unit (RMU) and a plurality of Dual-Port Message Buffers (DPBs) connecting each of a corresponding plurality of communication channels to the RMU. Each DPB includes a message channel interface, a dual-port RAM, a word counter, a page FIFO, a message header FIFO, and a message buffer control circuit. The RMU includes word comparators, 3-state gates, a message comparison control circuit, and a voted message FIFO. Under software control, the RMU and DPBs perform the functions of management of asynchronous redundant digital messages, sorting of redundant messages received in arbitrary order, synchronization of distributed computing elements, comparison of data words of arbitrary bit length, and configuration control of active channels and communication path redundancy.
REFERENCES:
patent: 3681578 (1972-08-01), Stevens
patent: 3848116 (1974-11-01), Moder et al.
patent: 4143353 (1979-03-01), Schaible
patent: 4225961 (1980-09-01), Raggenbass et al.
patent: 4665522 (1987-05-01), Lala et al.
patent: 4771427 (1988-09-01), Tulpule et al.
patent: 4868826 (1989-09-01), Smith et al.
Best David W.
McGahee Kevin L.
Atkinson Charles E.
Hamann H. Fredrick
Murrah M. Lee
Rockwell International Corporation
Sewell V. Lawrence
LandOfFree
Apparatus for management, comparison, and correction of redundan does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus for management, comparison, and correction of redundan, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for management, comparison, and correction of redundan will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1150015