Symmetrization for redundant channels

Details Symmetrization for redundant channels Symmetrization for redundant channels

1986-10-02

1988-09-27

Smith, Jerry

Excavating

371 68, G06F 1118

Patent

active

047747099

ABSTRACT:
A plurality of redundant channels in a system each contain a global image of all the configuration data bases in each of the channels in the system. Each global image is updated periodically from each of the other channels via cross channel data links. The global images of the local configuration data bases in each channel are separately symmetrized using a voting process to generate a system signal configuration data base which is not written into by any other routine and is available for indicating the status of the system within each channel. Equalization may be imposed on a suspect signal and a number of "chances" for that signal to "heal" itself are provided before excluding it from future votes. Reconfiguration is accomplished upon detecting a channel which is deemed invalid. A reset function is provided which permits an externally generated reset signal to permit a previously excluded channel to be reincluded within the system. The updating of global images and/or the symmetrization process may be accomplished at substantially the same time within a synchronized time frame common to all channels.

REFERENCES:
patent: 3805235 (1974-04-01), Foster
patent: 3882456 (1975-05-01), Takada
patent: 4347563 (1982-08-01), Paredes
patent: 4497059 (1985-01-01), Smith
patent: 4627055 (1986-12-01), Mori
patent: 4658359 (1987-04-01), Palatucci
patent: 4661310 (1987-04-01), Cook

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