Process for the transmission of analog and digital information. The object of the invention is the transmission of both analog-coded and digital-coded information only with an alternating current of one frequency and one phase position. This is accomplished in accordance with the invention in such a way that the carrier of the analog and digital information to synchronize the periods or half-periods of an uninterrupted sequence, so that, as needed, the periods or half-periods can be employed in sequence. In a real-time transmission, the analog periods or half-periods have to be the same number as the code words of the digital information. Such a transmission affords a substantial simplification. Thus, in color television, for example, the luminance signal can be transmitted in an analog manner and the color signal can be transmitted in series in a digital manner. Thus, no phase problems arise. The receiver can be designed as a superheterodyne radio receiver up to the decoder.