Universal realtime transparent asynchronous serial/echoplex...

Details Universal realtime transparent asynchronous serial/echoplex... Universal realtime transparent asynchronous serial/echoplex...

G - Physics

07

B

354/105, 354/34

G07B 17/02 (2006.01) G06F 13/42 (2006.01) G07B 17/00 (2006.01) H03M 9/00 (2006.01)

Patent

CA 1227575

ABSTRACT OF THE DISCLOSURE 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 serial 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.

458047

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