A CMOS image sensor is disclosed. The integrated circuit includes a semiconductor substrate including at least one environmental sensor. A light source directs a beam of light downwardly through the bottle and an iris for limits the beam to light which pass through the opening of the supported bottle and will illuminate the bottom of the supported bottle outwardly to the heal code of the bottle. When transmitting a data signal from DTE to DTE, octetbit insertion is performed DTE to a data, and transmission is made. The first value is in the absence of the attribute and the second value is in the presence of the attribute. The method includes detecting a reference value, comparing, instant by instant, the reference value with an output voltage value of the converter, and carrying out a switching from a transfer phase to an energy recirculation phase in correspondence with instants when the output voltage value reaches the reference value.