Touch system and touch sensitive processing apparatus and method thereof for detecting whether touch panel is partially submerged in conductive liquid

A touch sensitive processing method for detecting whether a touch panel is partially submerged in conductive liquid, wherein the touch panel comprises multiple parallel first electrodes and multiple second electrodes, the touch sensitive processing method comprising:

• driving one of the first electrodes and sensing the second electrodes, iteratively, for generating multiple one-dimensional sensing information;
• forming two-dimensional sensing information according to the multiple one-dimensional sensing information;
• determining whether a line piece group of liquid surface exists according to the two-dimensional sensing information, wherein the line piece group of liquid surface includes line pieces which are continuous parts of some of the one-dimensional sensing information, all values of sensing information belonging to the line piece group of liquid surface are larger than a first threshold;
• determining whether the line piece group of liquid surface contacts two edges of the touch panel if it is determined that the line piece group of liquid surface does exist;
• calculating two average values of values of sensing information corresponding to two sides of the two-dimensional sensing information which are separated by the line piece group of liquid surface if it is determined that the line piece group of liquid surface contacts two edges of the touch panel;
• determining one side with a larger one of the two average values is below a surface of the conductive liquid and another side is above the surface of the conductive liquid;
• and
• determining a liquid surface line according to an interface between the line piece group of liquid surface and the side above the surface of the conductive liquid.

A touch system for detecting whether a touch panel is partially submerged in conductive liquid, comprising:

• the touch panel, comprising multiple parallel first electrodes and multiple parallel second electrodes;
• and
• a touch sensitive processing apparatus, comprising:
• a driving circuit module;
• a sensing circuit module;
• an interconnection network module, configured to connect the driving circuit module and one of the multiple parallel first electrodes and the multiple parallel second electrodes of the touch panel and to connect the sensing circuit module and one of the multiple parallel first electrodes and the multiple parallel second electrodes of the touch panel;
• and
• a processor module, connected to the driving circuit module, the sensing circuit module and the interconnection network module, configured to execute instruction for implementing following steps:
• having the driving circuit module drive one of the first electrodes and having the sensing circuit module sense the second electrodes, iteratively, for generating multiple one-dimensional sensing information;
• forming two-dimensional sensing information according to the multiple one-dimensional sensing information;
• determining whether a line piece group of liquid surface exists according to the two-dimensional sensing information, wherein the line piece group of liquid surface includes line pieces which are continuous parts of some of the one-dimensional sensing information, all values of sensing information belonging to the line piece group of liquid surface are larger than a first threshold;
• determining whether the line piece group of liquid surface contacts two edges of the touch panel if it is determined that the line piece group of liquid surface does exist;
• calculating two average values of values of sensing information corresponding to two sides of the two-dimensional sensing information which are separated by the line piece group of liquid surface if it is determined that the line piece group of liquid surface contacts two edges of the touch panel;
• determining one side with a larger one of the two average values is below a surface of the conductive liquid and another side is above the surface of the conductive liquid;
• and
• determining a liquid surface line according to an interface between the line piece group of liquid surface and the side above the surface of the conductive liquid.