TOUCH APPARATUS, TOUCH CONTROLLER THEREOF AND NOISE DETECTION METHOD

摘要

A noise detection method including the following steps is provided. During different time periods, plural sets of driving signals are respectively transmitted to driving lines of the touch panel to drive sensing lines of the touch panel to generate plural sets of sensing signals. The plural sets of sensing signals are respectively received and calculated to obtain plural sets of summation signals. One set of summation signals includes first summation signals, and another set of summation signals includes second summation signals. A part or all of the first summation signals is replaced by the second summation signals. A signal value of a combination of the first and the second summation signals is calculated to obtain a summation thereof. The summation of the signal value of the combination is smaller than a summation of a signal values of the first summation signals before recombination.

主权项

1. A touch controller adapted for driving a touch panel, wherein the touch panel comprises a plurality of driving lines and a plurality of sensing lines electrically connected to the driving lines, the touch controller comprising:
a drive circuit, wherein in a first time period, the drive circuit transmits a plurality of first driving signals to the driving lines to drive the sensing lines to generate a plurality of first sensing signals, and in a second time period, the drive circuit transmits a plurality of second driving signals to the driving lines to drive the sensing lines to generate a plurality of second sensing signals; and a control circuit, wherein in the first time period, the control circuit receives and calculates the first sensing signals to obtain a plurality of first summation signals, and in the second time period, the control circuit receives and calculates the second sensing signals to obtain at least one second summation signal, wherein the control circuit replaces a part or all of the first summation signals with the at least one second summation signal, so that a summation of a signal value of a combination of the at least one second summation signal and the first summation signals which are not replaced is smaller than a summation of signal values of the first summation signals before recombination.