Patent ID: 7847715
Filing Date: 2010-12-07
Classification: G01C,H03M

Abstract:
1. An optical sensor system comprising: an optics circuit configured to generate analog measurement data; a detector circuit configured to detect the analog measurement data and to convert the analog measurement data to a digital measurement data; a signal processing circuit configured to demodulate the digital measurement data and to generate a digital signal based on the demodulated digital measurement data; and an optics drive circuit configured to generate an analog drive signal based on the digital signal, wherein the analog drive signal is used to drive the optical circuit; wherein the optics drive circuit comprises a first converter configured to convert a first digital data segment of the digital signal to a first analog data segment and a second converter configured to convert a second digital data segment of the digital signal to a second analog data segment; wherein the optics drive circuit is further configured to amplify the first and second analog data segments, combine the amplified analog data segments into a single analog drive signal, and feeds said single analog drive signal into the optics circuit to control modulation of light in said optical circuit.