ELECTRO MAGNETIC INDUCTION SENSING APPARATUS AND METHOD FOR CONTROLLING THEREOF

摘要

PURPOSE: Electromagnetic induction input type sensing device and control method thereof are provided to clearly grasp an input point of a touch object by having the same shape of signal outputted from a sub loop with a case that resistance of all the sub loops is the same. CONSTITUTION: A loop unit (100) receives an input signal from a touch object and includes sub loops (110-1-110-n). A resistance information measurement unit (120) measures resistance of the sub loop and generates a resistance information lookup table for the sub loop and resistance corresponding to the each sub loop. A control unit (130) corrects the sensing signal based on the resistance information lookup table and determines an input location of the touch object based on the corrected sensing signal. The resistance information measurement unit includes a sensing resistor unit connected to an end of the sub loop and a sensor unit sensing voltage applied to the sensing resistor unit and sensing current conducting through the sensing resistor unit. [Reference numerals] (110-1) First sub loop; (110-2) Second sub loop; (110-n) Third sub loop; (120) Resistance information measuring unit; (130) Control unit