Patent ID: 8289069
Filing Date: 2012-10-16
Classification: H03K

Abstract:
1. A touch apparatus, comprising a touch capacitor, and the touch apparatus comprising: a touch control unit, comprising: a signal sampling and saving unit, coupled to the touch capacitor, and used for sampling and saving a voltage on the touch capacitor during an enable period of a sample signal to generate a touch voltage, and sampling and saving a voltage on the touch capacitor during an enable period of a charge reset signal to generate a reset voltage, wherein the signal sampling and saving unit further generates an average voltage of the touch voltage and the reset voltage according to an equalization signal; a switch unit, coupled to the signal sampling and saving unit, and used for receiving and transmitting the touch voltage, the reset voltage, and the average voltage according to a first control signal; and a signal processing unit, coupled to the switch unit, and used for receiving the touch voltage, the reset voltage, the average voltage, and a common voltage, and coupling the touch voltage, the reset voltage, the average voltage, and the common voltage according to a second control signal, so as to generate a first coupling voltage and a second coupling voltage.