Universal real time transparent asynchronous serial/echoplex converter
US4535421A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 5, 1983 |
| Grant date | Aug 13, 1985 |
| Priority date | — |
| Expiry date | Jul 5, 2003 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07B2017/00338
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
Interface apparatus allows a serial communicating device to communicate with an echoplex communicating device. A first microprocessor coupled to the serial device converts serial data to a parallel format. The parallel formatted data is transferred to a second microprocessor which is coupled to the echoplex device. The second microprocessor converts the parallel data from the first microprocessor into echoplex data for transmission to the echoplex device. When data is to be transferred from the echoplex device to the first device, the second microprocessor converts the echoplex data to a parallel format. The parallel formatted data is transferred to the first microprocessor, for conversion into a serial form and transmission to the serial device. If both the serial and echoplex devices wish to transmit at the same time, priority is awarded to the echoplex device. The interface operates asynchronously on real time basis, and is transparent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.