Touch sensitive processing apparatus and electronic system for detecting whether touch panel is mostly covered by conductive liquid or object and method thereof

A touch sensitive processing apparatus for detecting if a touch panel is mostly covered by a conductive liquid or object, comprising:

• a driving circuit for providing a driving signal to one of a plurality of electrodes arranged in parallel on the touch panel;
• a sensing circuit for detecting sensing values of the plurality of electrodes in response to the driving signal;
• and
• a processor for commanding the driving circuit to provide the driving signal and receiving the sensing values from the sensing circuit;
• calculating a difference between each of the sensing values and its corresponding base value;
• determining if the differences are able to construct a quadratic curve;
• and determining that an area having the plurality of electrodes on the touch panel is covered by a large-area conductive liquid or object if the differences are unable to construct a quadratic curve.

A touch sensitive electronic system for detecting if a touch panel is mostly covered by a conductive liquid or object, comprising:

• the touch panel;
• and
• a touch sensitive processing apparatus including:
• a driving circuit for providing a driving signal to one of a plurality of electrodes arranged in parallel on the touch panel;
• a sensing circuit for detecting sensing values of the plurality of electrodes in response to the driving signal;
• and
• a processor for commanding the driving circuit to provide the driving signal and receiving the sensing values from the sensing circuit, determining if the sensing values are able to construct a quadratic curve, and determining that an area having the plurality of electrodes on the touch panel is covered by a large-area conductive liquid or object if the sensing values are unable to construct a quadratic curve.

A touch sensitive processing apparatus for detecting if a touch panel is mostly covered by a conductive liquid or object, comprising:

• a driving circuit for providing a driving signal to one of a plurality of electrodes arranged in parallel on the touch panel;
• a sensing circuit for detecting sensing values of the plurality of electrodes in response to the driving signal;
• and
• a processor for commanding the driving circuit to provide the driving signal and receiving the sensing values from the sensing circuit, determining if the sensing values are able to construct a quadratic curve, and determining that an area having the plurality of electrodes on the touch panel is covered by a large-area conductive liquid or object if the sensing values are unable to construct a quadratic curve.

A touch sensitive processing method for detecting if a touch panel is mostly covered by a conductive liquid or object, comprising the following steps of:

• providing a driving signal to one of a plurality of electrodes arranged in parallel on the touch panel;
• detecting sensing values of the plurality of electrodes in response to the driving signal;
• determining if the sensing values are able to construct a quadratic curve;
• and
• determining that an area having the plurality of electrodes on the touch panel is covered by a large-area conductive liquid or object if the sensing values are unable to construct a quadratic curve.

A touch sensitive processing method for detecting if a touch panel is mostly covered by a conductive liquid or object, comprising the following steps of:

• providing a driving signal to one of a plurality of electrodes arranged in parallel on the touch panel;
• detecting sensing values of the plurality of electrodes in response to the driving signal;
• calculating a difference between each of the sensing values and its corresponding base value;
• determining if the differences are able to construct a quadratic curve;
• and
• determining that an area having the plurality of electrodes on the touch panel is covered by a large-area conductive liquid or object if the differences are unable to construct a quadratic curve.