METHOD FOR SENSING PROXIMITY OF OBJECT AND APPARATUS THEREOF

摘要

PURPOSE: A proximity-sensing method and a device for the same are provided to enable to apply to all fields where proximity-sensing an object is necessary and to enhance the accuracy of the proximity-sensing, thereby improving the reliability. CONSTITUTION: A proximity-sensing method is as follows. A light source is ON/OFF controlled during a preset first ON period and a preset first OFF period(S310). The intensity of lights received by a proximity sensor during first ON and OFF periods is detected(S320). A first value corresponding to a difference of the intensity of the lights, which are detected during the first ON and OFF periods, is calculated(S330). The light source is ON/OFF controlled during a preset second ON period and a preset second OFF period(S340). The intensity of lights received by a proximity sensor during second ON and OFF periods is detected(S350). A second value corresponding to a difference of the intensity of the lights, which are detected during the second ON and OFF periods, is calculated(S360). The existence of the proximity of an object is determined based on a ratio of the first and second values(S370). [Reference numerals] (AA) Start; (BB) End; (S310) Controlling on/off of a light source for a first on time and a first off time; (S320) Detecting the intensity of light received to a proximity sensor for the first on time and the first off time; (S330) Calculating a first value corresponding to the light intensity difference; (S340) Controlling on/off of the light source for a second on time and a second off time; (S350) Detecting the intensity of light received to the proximity sensor for the second on time and the second off time; (S360) Calculating a second value corresponding to the light intensity difference; (S370) Determining the proximity of an object based on the ratio between the first and second values and a preset reference value;