Communication port control system
US5757276A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 19, 1996 |
| Grant date | May 26, 1998 |
| Priority date | — |
| Expiry date | Nov 19, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F13/4269
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A communication port control system which controls the use of communication ports for making a communication between a main station and a plurality of sub stations, and includes a processing unit for processing data received from the sub stations, and a logical sum unit for obtaining a logical sum of the data received from the sub stations and for supplying the logical sum to the processing unit via the communication ports. A judging unit is provided in the control system for judging a sub station number of the sub station from which the data received by the logical sum unit originates and for supplying the sub station number to the processing unit. The logical sum unit receives the data from only one of the sub stations at one time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.