Programmable communication controller line adapter and method for programming line adapter
US5235639A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 9, 1992 |
| Grant date | Aug 10, 1993 |
| Priority date | — |
| Expiry date | Jun 9, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F15/177
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A communication controller CCP includes line adapters (104-i) each having a storage which is loaded with a general application program during an initialization phase. The line adapters allow the attachment and the communication of different telecommunication entities, e.g. a LAN, a teleprocessing line etc. . . The CCP is connected by means of a control adapter to a local control terminal (100) which is associated with a storage for storing the different general application programs which are likely to be required by the different line adapters. A storage contains an access key comprising data relative to the types and the number of line adapters of any type which are authorized to be loaded with the general application program stored in the storage controlled by the control terminal. The CCP also has logic for checking whether a loading request received from one adapter complies with the contents of the stored access key in order to prevent the loading of an unauthorized line adapter. A method is disclosed for performing the loading of a line adapter card which is attached to a communication controller product CCP, the line adapter card being loadable with a general application pro…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.