Device for suppressing multiple registrations in a data store
US4092731A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 4, 1977 |
| Grant date | May 30, 1978 |
| Priority date | — |
| Expiry date | Jan 4, 1997 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB61L25/04
- WIPO fieldTransport
- WIPO sectorMechanical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.