Method and circuit for conforming an analog actual signal to a digital desired signal

A method of converting an analog actual signal to a digital desired signal using a circuit that includes a comparator having first and second input ports and one output port and a digital-to-analog converter, said method comprising:

• feeding the analog actual signal to said second input port of the comparator;
• feeding an analog output signal of the digital-to-analog converter to said first input port of the comparator;
• feeding the digital desired signal as a digital input signal to the digital-to-analog converter;
• and
• adapting the digital input signal fed to the digital-to-analog converter as a function of an output signal of the comparator, in a definable number of iterative steps, between definable lower and upper thresholds according to a balancing process, the digital input signal in each case fed to the digital-to-analog converter corresponding to the digital desired signal to which the analog actual signal is converted;
• wherein the digital desired signal is verified by a procedure in which,
• for a first additional iterative step, a definable signal value is subtracted from the analog actual signal forming a diminished actual signal;
• the diminished actual signal is then fed to said second input port of the comparator;
• the output signal of the comparator is checked to determine whether it falls below the analog output signal of the digital-to-analog converter, which is present at the first input port of the comparator and is generated from the digital desired signal to be verified;
• and
• for a second additional iterative step, a corresponding definable signal value is added to the analog actual signal forming an augmented actual signal;
• the augmented actual signal is then fed to said second input port of the comparator;
• the output signal of the comparator is checked to determine whether it exceeds the analog output signal of the digital-to-analog converter, which is present at the first input port of the comparator and is generated from the digital desired signal to be verified;
• and
• the digital desired signal is assumed to be correct when a result of the testing steps in the first and second additional iterative steps is affirmative.

A circuit for converting an analog actual signal to a desired digital signal, said circuit comprising:

• a comparator having first and second analog input ports and one analog output port;
• and
• a digital-to-analog converter having one digital input port and one analog output port;
• wherein,
• the analog output port of the digital-to-analog converter is connected with the first input port of the comparator;
• the analog actual signal is fed to the second input port of the comparator;
• and
• the analog output port of the comparator is connected with an electronic component for generating the desired digital signal which is fed to the digital input port of the digital-to-analog converter;
• wherein,
• the analog actual signal comprises a burst that includes a definable number of pulses;
• said step of feeding said analog actual signal comprises feeding a preselected pulse, from a preselected position within the burst to the second input port of the comparator;
• and
• based on the preselected pulse, in the comparator, a signal value is processed which corresponds to a pulse center thereof.