Device for suppressing multiple registrations in a data store

Details Device for suppressing multiple registrations in a data store Device for suppressing multiple registrations in a data store

1977-01-04

1978-05-30

Shaw, Gareth D.

Boots, shoes, and leggings

G06F 702

Patent

active

040927318

ABSTRACT:
A device for the suppression of multiple registrations of identical data in a data store, as a result of shuttle movements between inquiry and response devices of the data transmission system, which devices are movable relative to one another, particularly in a system for the automatic number-reporting of freight cars, and for point-to-point train control in railroading, in which data is alternately stored in one of two stores, prior to supply to the data store, with the data transmitted to the inquiry device from the most recently interrogated response device and from the previously interrogated response device being compared and, in the presence of differing data, in the two stores, supplies the most recently read-in data to the data store.

REFERENCES:
patent: 3493935 (1970-02-01), Questa
patent: 3571807 (1971-03-01), Candy et al.
patent: 3732547 (1973-05-01), Etra
patent: 3836768 (1974-09-01), Clarke et al.

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