Techniques for accessing devices through a set of serial buses

Details Techniques for accessing devices through a set of serial buses Techniques for accessing devices through a set of serial buses

2007-03-06

2007-03-06

Rinehart, Mark H. (Department: 2111)

Electrical computers and digital data processing systems: input/

Access polling

C710S316000, C710S038000, C710S031000, C710S015000, C710S313000

Reexamination Certificate

active

10673305

ABSTRACT:
In a highly available environmental monitoring system, several slave devices are associated with either a fast polling list or a slow polling list. The fast polling list is polled by a master device more frequently than the slow polling list. A slave device is associated with the fast polling list if the slave device responds to a poll from the master device within a time period, and is associated with the slow polling list if the slave device does not respond to the poll from the master device within the time period. Furthermore, several control devices arbitrate to determine which shall be the master device for controlling several serial buses. The master device periodically switches between the plurality of serial buses to communicate with slave devices.

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