Search technique for identifying slave devices connected to a se

Details Search technique for identifying slave devices connected to a se Search technique for identifying slave devices connected to a se

1986-03-05

1992-07-07

Yusko, Donald J.

Communications: electrical

Continuously variable indicating

With meter reading

34082508, 34082552, H04Q 900

Patent

active

051286645

ABSTRACT:
A slave device detecting system utilizes the past history of devices connected to a data bus to optimize the time required to re-establish communications. Whenever a master controller senses a condition that requires an assessment of devices on the bus, it examines the addresses of previously connected devices at more frequent time intervals than it does for addresses that were not previously associated with connected devices. In a preferred approach, all valid addresses can be examined in a sequential fashion, and the address of the previously connected device can be examined at every fifth or tenth position in the sequence. With such a technique, a device will be detected much faster once it has returned to the bus.

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Smith, IBM Tech. Discl. Bull., vol. 7, No. 12, p. 1127, "Terminal Polling From a Delay Line Buffer".

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