Multifunction bus to user device interface circuit
US4737950A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 31, 1985 |
| Grant date | Apr 12, 1988 |
| Priority date | — |
| Expiry date | May 31, 2005 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M3/523
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A multifunction bus to user device interface circuit interfaces a user device having an adjunct processing unit and transmit and receive lines with a multi-function bus having predetermined channels and control time slots. The interface circuit has an internal processor for controlling data flow and is connected to the adjunct processing unit through an internal interface means for communicating control, address and data signals. A serial connection memory for channel selection is operatively connected to the internal processor as well as a parallel connection memory for channel selection. An I/O port interfaces the control time slots on the multi-function bus and is operatively connected to the internal processor. The multi-function bus interface means provides for communicating with the channel of the multi-function bus.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.