A failsafe avionics interface unit serves as a protocol converter system for translating data for control purposes from a digital communication bus to an analog control channel as an upgrade or interface to an existing analog control system. The avionics interface unit includes digital interface bus...http://www.google.es/patents/US5377109?utm_source=gb-gplus-sharePatente US5377109 - Failsafe digital bus to analog protocol converter system
Failsafe digital bus to analog protocol converter system
