Secure infrared remote control system for automotive applications

A secure infrared remote control system is presented. Offering flexible programmability, the presented system matches several data encoding methods and carrier modulation techniques. Arbitrary long data codes can be transmitted within the capacity of the system memory. The low cost of the implementation is due to commercial components and a minimum number of circuits on the small sized printed circuit board. Powered by a battery energy source, the presented system is suitable for electronic door locking purposes for domestic and automotive applications. An example application for a car security access control is presented. The system has been tested under variable environment conditions and found to be very reliable and robust