Touch sensitive method, apparatus and electronic system for reducing interference from pixel refreshing

A touch sensitive apparatus for reducing interference from pixel refreshing, comprising:

• a sensing circuit, configured for:
• performing a first detection via multiple sensing electrodes of a touch screen to generate multiple first detection values;
• after a time interval, performing a second detection via the multiple sensing electrodes to generate multiple second detection values;
• and after the time interval;
• and
• performing a third detection via the multiple sensing electrodes to generate multiple third detection values;
• and
• a processor, connecting to the sensing circuit, configured for:
• adding the first detection values, the second detection values and the third detection values with respect to the multiple sensing electrodes up as multiple sums of detection values;
• determining that an external conductive object is approximating or touching the touch screen nearby a N-th sensing electrode among the multiple sensing electrodes according to the multiple sums;
• and
• determining a position of the external conductive object locates with respect to the multiple sensing electrodes according to one of the first detection values, the second detection values and the third detection values,
• wherein the multiple sensing electrodes are parallel to pixel horizontal axes of the touch screen.

An electronic system for reducing interference from pixel refreshing, comprising:

• a touch screen;
• and
• a touch sensitive apparatus, connecting to the touch screen, comprises:
• a sensing circuit, configured for:
• performing a first detection via multiple sensing electrodes of the touch screen to generate multiple first detection values;
• after a time interval, performing a second detection via the multiple sensing electrodes to generate multiple second detection values;
• and after the time interval;
• and
• performing a third detection via the multiple sensing electrodes to generate multiple third detection values;
• and
• a processor, connecting to the sensing circuit, configured for:
• adding the first detection values, the second detection values and the third detection values with respect to the multiple sensing electrodes up as multiple sums of detection values;
• determining that an external conductive object is approximating or touching the touch screen nearby a N-th sensing electrode among the multiple sensing electrodes according to the multiple sums;
• and
• determining a position of the external conductive object locates with respect to the multiple sensing electrodes according to one of the first detection values, the second detection values and the third detection values,
• wherein the multiple sensing electrodes are parallel to pixel horizontal axes of the touch screen.

A touch sensitive method for reducing interference from pixel refreshing, comprising:

• performing a first detection via multiple sensing electrodes of a touch screen to generate multiple first detection values;
• after a time interval, performing a second detection via the multiple sensing electrodes to generate multiple second detection values;
• after the time interval, performing a third detection via the multiple sensing electrodes to generate multiple third detection values;
• adding the first detection values, the second detection values and the third detection values with respect to the multiple sensing electrodes up as multiple sums of detection values;
• determining that an external conductive object is approximating or touching the touch screen nearby at least two adjacent sensing electrodes according to the sums of detection values;
• and
• determining a position of the external conductive object locates with respect to the multiple sensing electrodes according to one of the first detection values, the second detection values and the third detection values,
• wherein the multiple sensing electrodes are parallel to pixel horizontal axes of the touch screen.

A touch sensitive apparatus for reducing interference from pixel refreshing, comprising:

• a sensing circuit, configured for:
• performing a first detection via multiple sensing electrodes of a touch screen to generate multiple first detection values;
• after a time interval, performing a second detection via the multiple sensing electrodes to generate multiple second detection values;
• and
• after the time interval, performing a third detection via the multiple sensing electrodes to generate multiple third detection values;
• and
• a processor connected to the sensing circuit, configured for:
• adding the first detection values, the second detection values and the third detection values with respect to the multiple sensing electrodes up as multiple sums of detection values;
• determining that an external conductive object is approximating or touching the touch screen nearby at least two adjacent sensing electrodes according to the sums of detection values;
• and
• determining a position of the external conductive object locates with respect to the multiple sensing electrodes according to one of the first detection values, the second detection values and the third detection values,
• wherein the multiple sensing electrodes are parallel to pixel horizontal axes of the touch screen.

An electronic system for reducing interference from pixel refreshing, comprising:

• a touch screen;
• and
• a touch sensitive apparatus connecting to the touch screen, comprises:
• a sensing circuit, configured for:
• performing a first detection via multiple sensing electrodes of the touch screen to generate multiple first detection values;
• after a time interval, performing a second detection via the multiple sensing electrodes to generate multiple second detection values;
• and
• after the time interval, performing a third detection via the multiple sensing electrodes to generate multiple third detection values;
• and
• a processor connected to the sensing circuit, configured for:
• adding the first detection values, the second detection values and the third detection values with respect to the multiple sensing electrodes up as multiple sums of detection values;
• determining that an external conductive object is approximating or touching the touch screen nearby at least two adjacent sensing electrodes according to the sums of detection values;
• and
• determining a position of the external conductive object locates with respect to the multiple sensing electrodes according to one of the first detection values, the second detection values and the third detection values,
• wherein the multiple sensing electrodes are parallel to pixel horizontal axes of the touch screen.

A touch sensitive method for obtaining a time interval, which can be used in another touch sensitive method for reducing interference from pixel refreshing, comprising:

• setting a time interval;
• determining that there is no external conductive object approximating or touching a touch screen;
• performing a first detection via multiple sensing electrodes of the touch screen to generate multiple first detection values;
• after a time interval, performing a second detection via the multiple sensing electrodes to generate multiple second detection values;
• after the time interval, performing a third detection via the multiple sensing electrodes to generate multiple third detection values;
• determining whether only one single maximum exists among each of the first detection, the second detection and the third detection;
• determining whether the three maximums are corresponding to three adjacent sensing electrodes if only one single maximum exists among each of the first detection, the second detection and the third detection;
• and
• storing the time interval if the three maximums are corresponding to three adjacent sensing electrodes,
• wherein the multiple sensing electrodes are parallel to pixel horizontal axes of the touch screen.

A touch sensitive apparatus for obtaining a time interval, which can be used in a touch sensitive method for reducing interference from pixel refreshing, comprising:

• a sensing circuit, configured for:
• performing a first detection via multiple sensing electrodes of a touch screen to generate multiple first detection values;
• after a time interval, performing a second detection via the multiple sensing electrodes to generate multiple second detection values;
• and
• after the time interval, performing a third detection via the multiple sensing electrodes to generate multiple third detection values;
• and
• a processor connecting to the sensing circuit, configured for:
• determining whether only one single maximum exists among each of the first detection, the second detection and the third detection;
• determining whether the three maximums are corresponding to three adjacent sensing electrodes if only one single maximum exists among each of the first detection, the second detection and the third detection;
• and
• storing the time interval if the three maximums are corresponding to three adjacent sensing electrodes,
• wherein the multiple sensing electrodes are parallel to pixel horizontal axes of the touch screen.

An electronic system for obtaining a time interval, which can be used in a touch sensitive method for reducing interference from pixel refreshing, comprising:

• a touch screen;
• a sensing circuit, configured for:
• performing a first detection via multiple sensing electrodes of the touch screen to generate multiple first detection values;
• after a time interval, performing a second detection via the multiple sensing electrodes to generate multiple second detection values;
• and
• after the time interval, performing a third detection via the multiple sensing electrodes to generate multiple third detection values;
• and
• a processor connected to the sensing circuit, configured for:
• determining whether only one single maximum exists among each of the first detection, the second detection and the third detection;
• determining whether the three maximums are corresponding to three adjacent sensing electrodes if only one single maximum exists among each of the first detection, the second detection and the third detection;
• and
• storing the time interval if the three maximums are corresponding to three adjacent sensing electrodes,
• wherein the multiple sensing electrodes are parallel to pixel horizontal axes of the touch screen.