Patent ID: 9710112
Date: 2017-07-18
CPC Classifications: G06F,H04B

Claim:
1. An apparatus for identifying coordinates of a touch area on a touch screen panel based on a capacitive scheme, the apparatus comprising: the touch screen panel comprising a first electrode layer having first electrode lines aligned in a first direction and a second electrode layer having second electrode lines aligned in a second direction, wherein the second direction is different from the first direction, and wherein an electric field exists between the first electrode layer and the second electrode layer; a signal generation unit for generating a spread spectrum signal and supplying the spread spectrum signal to the first electrode layer; a signal restoration unit for processing a band restoration for a signal input from the second electrode layer, and a touch area coordinate identification unit for identifying the coordinates of the touch area on the touch screen panel by using a signal input from the signal restoration unit, wherein the signal generation unit comprises: an input signal generator for generating an input signal required for identifying the coordinates of the touch area, a spread spectrum code generator for generating a spread spectrum code for generating the spread spectrum signal with a higher frequency spectrum than a frequency spectrum of the input signal, and a spread spectrum processor for combining the input signal and the spread spectrum code and generating the spread spectrum signal.