A METHOD FOR CONVERTING AN ANALOG INPUT SIGNAL INTO A DIGITAL OUTPUT SIGNAL, AN ARRANGEMENT FOR PERFORMING SUCH METHOD AND AN IMAGE SENSOR COMPRISING SUCH ARRANGEMENTS

摘要

A method and arrangement for converting an analog input signal into a digital output signal. The analog input signal is converted into a duty cycle modulated square wave. For reducing the communication rate of the digital output signal a time frame of subsampling periods is created and, within each subsampling period, the position of samples, which approximately coincide with the transients of the square wave, is determined. The invention further provides an image sensor comprising a plurality of such arrangements.