Touch detection method, touch chip and electronic device

A touch chip, comprising:

• a driving unit, configured to apply a driving signal to a driving channel of a touch screen, wherein the driving signal is encoded based on a preset encoding mode and includes a plurality of signal waveforms divided into waveforms in at least one correlated double sampling cycle, the same correlated double sampling cycle including two sampling cycles with a phase difference of 180° between a waveform in one sampling cycle and that in the other sampling cycle;
• a receiving unit, configured to receive a sensing signal that corresponds to the driving signal and that is from a sensing channel of the touch screen;
• and
• a processing unit, configured to determine a touch position information according to the sensing signal and according to an encoding information corresponding to the encoding mode.

An electronic device, comprising:

• a touch screen and a touch chip, wherein the touch chip comprising:
• a driving unit, configured to apply a driving signal to a driving channel of a touch screen, wherein the driving signal is encoded based on a preset encoding mode and includes a plurality of signal waveforms divided into waveforms in at least one correlated double sampling cycle, the same correlated double sampling cycle including two sampling cycles with phase difference of 180° between a waveform in one sampling cycle and that in the other sampling cycle;
• a receiving unit, configured to receive a sensing signal that corresponds to the driving signal and that is from a sensing channel of the touch screen;
• and
• a processing unit, configured to determine a touch position information according to the sensing signal and according to an encoding information corresponding to the encoding mode.