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It is clearly perceived the exponential growth of on-board electronics on several technological segments. On aerospace segment that is not different. Besides those propulsion and navigation fundamentals systems, necessary on most part of the aircrafts, many complex electronic systems are required: for the treatment of information sent by either landed equipments or other aircrafts (often found on military applications), and for comfort and entertainment systems (most related to passenger transportation applications). In any case, the amount of available and exchangeable information between these systems is fairly huge. Such data exchange would be easier performed if were made through the application of a communication protocol. This paper lists and analyses the communication protocols used by most part of the current and future aircrafts. The intention of this document is to be a study guideline of avionics related protocols.

Real-time information, standardized and interacting with radio broadcasting listeners during the time they spend driving their cars, could be extremely interesting and useful whether it offers public concerned information and make feasible the complete application of the system (hardware and software) it is based on. The RDS (Radio Data System) standard, which modulation characteristic is based on the concept its data signals are carried on a subcarrier which is added to the stereo multiplex signal at the stereo encoder, make feasible this benefits with extremely low cost, for the listener and even for the broadcaster. Being applied in Europe for more than 15 years, the RDS offers features that improve the operation of the receiver and take advantage of the architecture available in some vehicles through remote actuation of many parts of the car.