METHOD FOR DISTANCE CALCULATION USING DEPTH SENSOR, AND APPARATUSES PERFORMING THE SAME

摘要

A method of calculating a distance, using a depth sensor, comprises steps of: receiving the modulated light signal reflected by an object, outputting a modulated light signal output from a light source to an object; and calculating a distance between the light source and the object using the reflected modulated light signal input to photo gates in conjunction with demodulation signals supplied to the photo gates. The calculating step calculates, using the modulated light signal, at least one distance farther than a maximum measurable distance, and setting the at least one distance to be equal to the maximum measurable distance. A range of the distance farther than the maximum measurable distance can be determined according to a duty ratio of the modulated light signal. Each duty ratio of the modulated light signal and the demodulation signals is determined at 1/(2n), where n is a natural number.