Method of synchronizing a fixed frequency ratio for a multi-axis scanner

A scanning system, comprising:

• a first oscillator structure configured to oscillate about a first axis according to a first oscillation;
• a second oscillator structure configured to oscillate about a second axis according to a second oscillation;
• a reference signal circuit comprising:
• a digitally controlled oscillator (DCO) configured with a DCO period and configured to divide the DCO period into a plurality of equidistant slices and generate a subtiming signal that indicates the plurality of equidistant slices;
• a first reference signal generator configured to receive the subtiming signal and generate a first reference signal having a first frequency based on the subtiming signal;
• and
• a second reference signal generator configured to receive the subtiming signal and generate a second reference signal having a second frequency based on the subtiming signal;
• and
• a driver system configured to receive the first reference signal and the second reference signal, drive the first oscillation of the first oscillator structure at the first frequency based on the first reference signal, and drive the second oscillation of the second oscillator structure at the second frequency based on the second reference signal.

A method, comprising:

• generating, by a digitally controlled oscillator (DCO), a subtiming signal that indicates a plurality of equidistant slices of a DCO period of the DCO;
• generating, by a reference signal circuit, a first reference signal having a first frequency based on the subtiming signal;
• generating, by the reference signal circuit, a second reference signal having a second frequency based on the subtiming signal;
• driving, by a driver system, a first oscillation of a scanning system at the first frequency based on the first reference signal;
• and
• driving, by the driver system, a second oscillation of the scanning system at the second frequency based on the second reference signal,
• wherein the first frequency and the second frequency define a fixed frequency ratio.

A reference signal circuit, comprising:

• a digitally controlled oscillator (DCO) configured with a DCO period and configured to divide the DCO period into a plurality of slices and generate a subtiming signal that indicates the plurality of slices;
• a first reference signal generator configured to receive the subtiming signal and generate a first reference signal having a first frequency based on the subtiming signal;
• and
• a second reference signal generator configured to receive the subtiming signal and generate a second reference signal having a second frequency based on the subtiming signal,
• wherein the first reference signal generator and the second reference signal generator are configured to synchronize the first reference signal and the second reference signal to the subtiming signal, respectively, and are configured to set a first fixed frequency ratio between the first frequency and the second frequency.