Synchronized network of electronic devices including back-up mas

Details Synchronized network of electronic devices including back-up mas Synchronized network of electronic devices including back-up mas

1995-07-14

1998-05-12

Horabik, Michael

Communications: electrical

Continuously variable indicating

With meter reading

34082551, 34082514, 34082507, 375357, 370507, H04L 700

Patent

active

057512205

ABSTRACT:
Operation of a plurality of electronic devices is synchronized. The plurality of devices include a master unit and a plurality of other units, and the master unit transmits a synchronizing signal to at least one of the other units at predetermined intervals. Each of at least two of the other units detects whether a synchronizing signal is received at the respective unit within a predetermined period of time. If not, the respective unit changes from a slave mode of operation to a master mode of operation. Contention between the two or more potential back-up master units is resolved based on priority in a daisy-chain arrangement or by providing different time-out watch-dog periods for the potential back-up devices.

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Tobagi, Fouad A.; "Multiaccess protocols in Packet Communication Systems"; IEEE Transactions on Communications, vol. Com-28, No. 4, Apr. 1980, pp. 468-488.

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