Abstract: An optical device that provides a broadened circular scanning pattern. The device includes a reflector system dimensioned to form a coupled oscillator with two modes of oscillation for circular tilt motion, a first mode oscillation in a first resonance frequency and a second mode of oscillation in a second resonance frequency that is different from the first resonance frequency. A signal processing element is configured to control the actuation signals to maintain a first amplitude in the first mode of oscillation, and a second amplitude in the second mode of oscillation.

Abstract: An optical device that provides a broadened circular scanning pattern. The device includes a reflector system dimensioned to form a coupled oscillator with two modes of oscillation for circular tilt motion, a first mode oscillation in a first resonance frequency and a second mode of oscillation in a second resonance frequency that is different from the first resonance frequency. A signal processing element is configured to control the actuation signals to maintain a first amplitude in the first mode of oscillation, and a second amplitude in the second mode of oscillation.

Abstract: The claims define a processing circuit for processing input signals from a capacitive transducer structure. A current-to-voltage converter receives two input signals from the capacitive transducer structure, and outputs two output signals to gain stage circuits, and to a reference voltage generator. The gain stages generate from the output voltage signals a differential output signal. The reference voltage generates from the output signals a common mode output signal. The processing circuit generates a digital signal that corresponds to a quotient of the differential output signal and the common mode output signal.

Abstract: A delta-sigma analog-to-digital converter for use with multiplexed input channels. The delta-sigma analog-to-digital converter comprising at least one integrator that includes an operational amplifier, a memory element with a leakage preventing switch structure for each input channel and a reset switch element adapted to reset the operational amplifier between the input channels. The specific switch design prevents effectively channel to channel cross talk between multiplexed channels.

Abstract: A delta-sigma analog-to-digital converter for use with multiplexed input channels. The delta-sigma analog-to-digital converter comprising at least one integrator that includes an operational amplifier, a memory element with a leakage preventing switch structure for each input channel and a reset switch element adapted to reset the operational amplifier between the input channels. The specific switch design prevents effectively channel to channel cross talk between multiplexed channels.

Abstract: The claims define a processing circuit for processing input signals from a capacitive transducer structure. A current-to-voltage converter receives two input signals from the capacitive transducer structure, and outputs two output signals to gain stage circuits, and to a reference voltage generator. The gain stages generate from the output voltage signals a differential output signal. The reference voltage generates from the output signals a common mode output signal. The processing circuit generates a digital signal that corresponds to a quotient of the differential output signal and the common mode output signal.