Applications processor module for interfacing to a database system
US4982325A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 18, 1988 |
| Grant date | Jan 1, 1991 |
| Priority date | — |
| Expiry date | Mar 18, 2008 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M3/30
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The present invention relates to a technique for interfacing a plurality of remote terminals, as, for example, Craft Access Terminals (CATs), directly to a central database in a system, such as, for example, a Craft Access System, without interfacing with an intermediate center such as, for example, a centralized Repair Service Bureau and its personnel. An Applications Processor Microcomputer (APM) module includes a General Data Transport (GDT) to provide a powerful microprocessing environment and multiple data communication interfaces, and an Applications Interface Module (AIM) to provide the appropriate signal interface with the database system, the GDT, and the remote terminals. The APM is arranged for connection on one side to both (1) the database system via a trunk; and (2) one or more remote terminals via separate lines to process their calls and permit direct interaction with the database system; and on a second side a via the GDT to a standard IEEE 488 General Purpose Interface Bus (GPIB) for permitting high-speed communication between a plurality K of such APMs. The APM module is designed to provide both high-speed data and control message transmissions over the GPIB betw…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.