Patent ID: 10359886

Abstract:
A common mode noise processing apparatus is provided. The common mode noise processing apparatus includes s subtraction processing units (210-1 to 210-s) and one spectrum analysis module (220); each of the subtraction processing units (210-1 to 210-s) includes two first input ports (211-1 to 211-s, 212-1 to 212-s) connected to the subtractor, one subtractor (213-1 to 213-s) and one first output port (214-1 to 214-s) connected to the subtractor; the spectrum analysis module (220) includes s second input ports (221-1 to 221-s) connected to the s first output ports in one-to-one correspondence and at least one spectrum analysis unit (222) connected to the s second input ports (221). The common mode noise processing apparatus may be capable of detecting a common mode noise in a signal for determining a location of a touch point, so as to reduce impact of the common mode noise on the signal.