Universal device for coupling a computer bus to a controller of a group of peripherals
US5367646A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 15, 1992 |
| Grant date | Nov 22, 1994 |
| Priority date | — |
| Expiry date | Jul 15, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F13/128
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An universal device (GPUI) for coupling a computer bus (PSB) to a controller (DEA) of a group of peripherals connected to one another by a specific link (FDDI) to which the controller is physically connected, includes a microprocessor (CPU) associated with a set of memories and an interface (IHAC, IHAD) for linkage with the controller (DEA) assuring the transfer of the data of the frames and of control blocks. The universal coupling device comprises a double-port random-access buffer memory (VRAM) connected by way of a first bus (B.sub.1) to the interface (IHAD) and by way of a second bus (B.sub.2) to the computer bus via a specific interface of the computer (MPC). Transfer of the data between the linking interface (IHAC, IHAD) and the double-port memory, on the one hand, and between the latter (VRAM) and the computer bus (PSB) on the other, is organized by a microprocessor (CPU), as is the conversion of control blocks used on the computer bus into those used in the link.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.