Transmitter device including a modulator apparatus for the generation of a modulated digital signal in a remote control system. The modulated signal is defined by at least one characteristic quantity correlated to an information to transmit. The modulator apparatus is characterized by including a finite states machine for generating a modulating digital signal to combine with a carrier signal and obtain the modulated signal. The finite states machine generates the modulating signal on the basis of digital data corresponding to said at least one characteristic quantity.