Patent ID: 9170095
Filing Date: 2015-10-27
Classification: G01B,G01S

Abstract:
1. A distance detection device comprising: a light emitter configured to transmit light in a series of frames, wherein each frame in the series of frames includes at least one light pulse; a light receiver configured to circuitry configured to the light receiver includes at least two light sensors that detect the at least one light pulse, the circuitry is configured to control the at least two light sensors by outputting a gate signal to each of the at least two light sensors, wherein the gate signal controls a time interval during which light may be detected by the at least two light sensors, the gate signals output by the circuitry are offset in phase with respect to each other, the light receiver output represents an amount of electrical charge generated by each of the at least two sensors as a result of each of the at least two light sensors detecting the at least one light pulse during the time interval defined by the gate signal, the circuitry is configured to determine whether one or more of the amounts of electrical charge generated by each of the at least two sensors exceeds a predetermined threshold level, and when neither of the amounts of electrical charge generated by each of the at least two sensors exceeds the predetermined threshold level, the circuitry is further configured to dynamically control the frame rate by extending the current frame so as to include a detection of at least one more light pulse by the light receiver.