Patent ID: 7815119

Claim:
A system in a light scanning arrangement having a drive coil driven by a drive signal to oscillate a scan mirror and a light beam reflected from the scan mirror, and a feedback coil for generating a feedback signal during oscillation of the scan mirror, the feedback coil being in proximity with the drive coil and being subject to corruption by cross-coupling between the coils, the system comprising: a drive for driving the drive coil with a drive signal formed as a periodic train of drive pulses, and for not driving the drive coil with at least one drive pulse during a quiet time period; circuitry for minimizing the cross-coupling by generating the feedback signal only during the quiet time period; a controller for monitoring a position of the scan mirror by processing the feedback signal which was generated only during the quiet time period; and circuitry for compensating for the absence of the at least one drive pulse in the quiet time period by generating at least one compensating pulse during a compensation time period following the quiet time period.