Transmitter/receiver signal locking/unlocking cars having receiver detecting transmission intensity following relative position function and when comparison correct action commanded

摘要

The signal transmission and reception has a mobile unit locking and unlocking a car. The mobile transmitter and receiver (4) has a receiver which detects the transmission intensity as a function of relative position between the two. An analysis unit compares the received values with set values. The action is commanded if the comparison is correct.